Compile-time stack metadata validation

This is v19 of the compile-time stack metadata validation patch set.

It's based on tip:core/objtool.

v18 can be found here:

https://lkml.kernel.org/r/[email protected]

For more information about the motivation behind this patch set, and more details about what it does, see the patch 8 changelog and tools/objtool/Documentation/stack-validation.txt.

Patches 1-7 mark various directories, files, and functions as "non-standard" in preparation for objtool.

Patches 8-10 add objtool and integrate it into the kernel build.

v19:
- add support for CONFIG_GCOV_KERNEL, CONFIG_KASAN, CONFIG_UBSAN
- always inline context_switch() to prevent gcov inline changes
- add main() return value in objtool.c
- change warning output format to mimic gcc warnings

v18:
- include/linux/objtool.h -> include/linux/frame.h
- __objtool_ignore_func -> __func_stack_frame_non_standard
- reword commit messages and comments a bit
- reorder patches

v17:
- __ex_table fix
- rename stacktool -> objtool
- STACKTOOL_IGNORE_FUNCTION -> STACK_FRAME_NON_STANDARD
- 'STACKTOOL := n' -> 'OBJECT_FILES_NON_STANDARD := y'
- updated global_noreturns list

v16:
- fix all allyesconfig warnings, except for staging
- get rid of STACKTOOL_IGNORE_INSN which is no longer needed
- remove several whitelists in favor of automatically whitelisting any function with a special instruction like ljmp, lret, or vmrun
- split up stacktool patch into 3 parts as suggested by Ingo
- update the global noreturn function list
- detect noreturn function fallthroughs
- skip weak functions in noreturn call detection logic
- add empty function check to noreturn logic
- allow non-section rela symbols for __ex_table sections
- support rare switch table case with jmpq *[addr](%rip)
- don't warn on frame pointer restore without save
- rearrange patch order a bit

v15:
- restructure code for a new cmdline interface "stacktool check" using the new subcommand framework in tools/lib/subcmd
- fix 32 bit build fail (put __sp at end) in paravirt_types.h patch 10 which was reported by 0day

v14:
- make tools/include/linux/list.h self-sufficient
- create FRAME_OFFSET to allow 32-bit code to be able to access function arguments on the stack
- add FRAME_OFFSET usage in crypto patch 14/24: "Create stack frames in aesni-intel_asm.S"
- rename "index" -> "idx" to fix build with some compilers

v13:
- LDFLAGS order fix from Chris J Arges
- new warning fix patches from Chris J Arges
- "--frame-pointer" -> "--check-frame-pointer"

v12:
- rename "stackvalidate" -> "stacktool"
- move from scripts/ to tools/:
- makefile rework
- make a copy of the x86 insn code (and warn if the code diverges)
- use tools/include/linux/list.h
- move warning macros to a new warn.h file
- change wording: "stack validation" -> "stack metadata validation"

v11:
- attempt to answer the "why" question better in the documentation and commit message
- s/FP_SAVE/FRAME_BEGIN/ in documentation

v10:
- add scripts/mod to directory ignores
- remove circular dependencies for ignored objects which are built before stackvalidate
- fix CONFIG_MODVERSIONS incompatibility

v9:
- rename FRAME/ENDFRAME -> FRAME_BEGIN/FRAME_END
- fix jump table issue for when the original instruction is a jump
- drop paravirt thunk alignment patch
- add maintainers to CC for proposed warning fixes

v8:
- add proposed fixes for warnings
- fix all memory leaks
- process ignores earlier and add more ignore checks
- always assume POPCNT alternative is enabled
- drop hweight inline asm fix
- drop __schedule() ignore patch
- change .Ltemp_\@ to .Lstackvalidate_ignore_\@ in asm macro
- fix CONFIG_* checks in asm macros
- add C versions of ignore macros and frame macros
- change ";" to "\n" in C macros
- add ifdef CONFIG_STACK_VALIDATION checks in C ignore macros
- use numbered label in C ignore macro
- add missing break in switch case statement in arch-x86.c

v7:
- sibling call support
- document proposed solution for inline asm() frame pointer issues
- say "kernel entry/exit" instead of "context switch"
- clarify the checking of switch statement jump tables
- discard __stackvalidate_ignore_* sections in linker script
- use .Ltemp_\@ to get a unique label instead of static 3-digit number
- change STACKVALIDATE_IGNORE_FUNC variable to a static
- move STACKVALIDATE_IGNORE_INSN to arch-specific .h file

v6:
- rename asmvalidate -> stackvalidate (again)
- gcc-generated object file support
- recursive branch state analysis
- external jump support
- fixup/exception table support
- jump label support
- switch statement jump table support
- added documentation
- detection of "noreturn" dead end functions
- added a Kbuild mechanism for skipping files and dirs
- moved frame pointer macros to arch/x86/include/asm/frame.h
- moved ignore macros to include/linux/stackvalidate.h

v5:
- stackvalidate -> asmvalidate
- frame pointers only required for non-leaf functions
- check for the use of the FP_SAVE/RESTORE macros instead of manually analyzing code to detect frame pointer usage
- additional checks to ensure each function doesn't leave its boundaries
- make the macros simpler and more flexible
- support for analyzing ALTERNATIVE macros
- simplified the arch interfaces in scripts/asmvalidate/arch.h
- fixed some asmvalidate warnings
- rebased onto latest tip asm cleanups
- many more small changes

v4:
- Changed the default to CONFIG_STACK_VALIDATION=n, until all the asm code can get cleaned up.
- Fixed a stackvalidate error path exit code issue found by Michal Marek.

v3:
- Added a patch to make the push/pop CFI macros arch-independent, as suggested by H. Peter Anvin

v2:
- Fixed memory leaks reported by Petr Mladek

Josh Poimboeuf (10):
objtool: Mark non-standard files and directories
objtool: Add STACK_FRAME_NON_STANDARD macro
x86/xen: Mark xen_cpuid() stack frame as non-standard
bpf: Mark __bpf_prog_run() stack frame as non-standard
sched: Mark __schedule() stack frame as non-standard
sched: always inline context_switch()
x86/kprobes: Mark kretprobe_trampoline() stack frame as non-standard
objtool: Compile-time stack metadata validation
objtool: Add CONFIG_STACK_VALIDATION option
objtool: Enable stack metadata validation on x86_64

 MAINTAINERS                                       |    5 +
 Makefile                                          |    5 +-
 arch/Kconfig                                      |    6 +
 arch/x86/Kconfig                                  |    1 +
 arch/x86/boot/Makefile                            |    3 +-
 arch/x86/boot/compressed/Makefile                 |    3 +-
 arch/x86/entry/Makefile                           |    4 +
 arch/x86/entry/vdso/Makefile                      |    6 +-
 arch/x86/kernel/Makefile                          |   11 +-
 arch/x86/kernel/kprobes/core.c                    |    2 +
 arch/x86/kernel/vmlinux.lds.S                     |    5 +-
 arch/x86/platform/efi/Makefile                    |    2 +
 arch/x86/purgatory/Makefile                       |    2 +
 arch/x86/realmode/Makefile                        |    4 +-
 arch/x86/realmode/rm/Makefile                     |    3 +-
 arch/x86/xen/enlighten.c                          |    3 +-
 drivers/firmware/efi/libstub/Makefile             |    1 +
 include/linux/frame.h                             |   23 +
 kernel/bpf/core.c                                 |    2 +
 kernel/sched/core.c                               |    4 +-
 lib/Kconfig.debug                                 |   12 +
 scripts/Makefile.build                            |   39 +-
 scripts/mod/Makefile                              |    2 +
 tools/Makefile                                    |   14 +-
 tools/objtool/.gitignore                          |    2 +
 tools/objtool/Build                               |   13 +
 tools/objtool/Documentation/stack-validation.txt  |  342 +++++++
 tools/objtool/Makefile                            |   60 ++
 tools/objtool/arch.h                              |   44 +
 tools/objtool/arch/x86/Build                      |   12 +
 tools/objtool/arch/x86/decode.c                   |  172 ++++
 tools/objtool/arch/x86/insn/gen-insn-attr-x86.awk |  387 ++++++++
 tools/objtool/arch/x86/insn/inat.c                |   97 ++
 tools/objtool/arch/x86/insn/inat.h                |  221 +++++
 tools/objtool/arch/x86/insn/inat_types.h          |   29 +
 tools/objtool/arch/x86/insn/insn.c                |  594 ++++++++++++
 tools/objtool/arch/x86/insn/insn.h                |  201 ++++
 tools/objtool/arch/x86/insn/x86-opcode-map.txt    |  984 +++++++++++++++++++
 tools/objtool/builtin-check.c                     | 1072 +++++++++++++++++++++
 tools/objtool/builtin.h                           |   22 +
 tools/objtool/elf.c                               |  403 ++++++++
 tools/objtool/elf.h                               |   79 ++
 tools/objtool/objtool.c                           |  136 +++
 tools/objtool/special.c                           |  193 ++++
 tools/objtool/special.h                           |   42 +
 tools/objtool/warn.h                              |   60 ++
 46 files changed, 5304 insertions(+), 23 deletions(-)
 create mode 100644 include/linux/frame.h
 create mode 100644 tools/objtool/.gitignore
 create mode 100644 tools/objtool/Build
 create mode 100644 tools/objtool/Documentation/stack-validation.txt
 create mode 100644 tools/objtool/Makefile
 create mode 100644 tools/objtool/arch.h
 create mode 100644 tools/objtool/arch/x86/Build
 create mode 100644 tools/objtool/arch/x86/decode.c
 create mode 100644 tools/objtool/arch/x86/insn/gen-insn-attr-x86.awk
 create mode 100644 tools/objtool/arch/x86/insn/inat.c
 create mode 100644 tools/objtool/arch/x86/insn/inat.h
 create mode 100644 tools/objtool/arch/x86/insn/inat_types.h
 create mode 100644 tools/objtool/arch/x86/insn/insn.c
 create mode 100644 tools/objtool/arch/x86/insn/insn.h
 create mode 100644 tools/objtool/arch/x86/insn/x86-opcode-map.txt
 create mode 100644 tools/objtool/builtin-check.c
 create mode 100644 tools/objtool/builtin.h
 create mode 100644 tools/objtool/elf.c
 create mode 100644 tools/objtool/elf.h
 create mode 100644 tools/objtool/objtool.c
 create mode 100644 tools/objtool/special.c
 create mode 100644 tools/objtool/special.h
 create mode 100644 tools/objtool/warn.h

2.4.3

Code which runs outside the kernel's normal mode of operation often does unusual things which can cause a static analysis tool like objtool to emit false positive warnings:

- boot image
- vdso image
- relocation
- realmode
- efi
- head
- purgatory
- modpost

Set OBJECT_FILES_NON_STANDARD for their related files and directories, which will tell objtool to skip checking them. It's ok to skip them because they don't affect runtime stack traces.

Also skip the following code which does the right thing with respect to frame pointers, but is too "special" to be validated by a tool:

- entry
- mcount

Also skip the test_nx module because it modifies its exception handling table at runtime, which objtool can't understand. Fortunately it's just a test module so it doesn't matter much.

Currently objtool is the only user of OBJECT_FILES_NON_STANDARD, but it might eventually be useful for other tools.

---
 arch/x86/boot/Makefile                |  3 ++-
 arch/x86/boot/compressed/Makefile     |  3 ++-
 arch/x86/entry/Makefile               |  4 ++++
 arch/x86/entry/vdso/Makefile          |  6 ++++--
 arch/x86/kernel/Makefile              | 11 ++++++++---
 arch/x86/platform/efi/Makefile        |  2 ++
 arch/x86/purgatory/Makefile           |  2 ++
 arch/x86/realmode/Makefile            |  4 +++-
 arch/x86/realmode/rm/Makefile         |  3 ++-
 drivers/firmware/efi/libstub/Makefile |  1 +
 scripts/mod/Makefile                  |  2 ++
 11 files changed, 32 insertions(+), 9 deletions(-)

index bbe1a62..0bf6749 100644
@@ -9,7 +9,8 @@
 # Changed by many, many contributors over the years.
 #
 
-KASAN_SANITIZE := n
+KASAN_SANITIZE			:= n
+OBJECT_FILES_NON_STANDARD	:= y
 
 # If you want to preset the SVGA mode, uncomment the next line and
 # set SVGA_MODE to whatever number you want.

index f9ce75d..5e1d26e 100644
@@ -16,7 +16,8 @@
 #	(see scripts/Makefile.lib size_append)
 #	compressed vmlinux.bin.all + u32 size of vmlinux.bin.all
 
-KASAN_SANITIZE := n
+KASAN_SANITIZE			:= n
+OBJECT_FILES_NON_STANDARD	:= y
 
 targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma \
 	vmlinux.bin.xz vmlinux.bin.lzo vmlinux.bin.lz4

index bd55ded..fe91c25 100644
@@ -1,6 +1,10 @@
 #
 # Makefile for the x86 low level entry code
 #
+
+OBJECT_FILES_NON_STANDARD_entry_$(BITS).o   := y
+OBJECT_FILES_NON_STANDARD_entry_64_compat.o := y
+
 obj-y				:= entry_$(BITS).o thunk_$(BITS).o syscall_$(BITS).o
 obj-y				+= common.o
 

index c854541..f9fb859 100644
@@ -3,8 +3,9 @@
 #
 
 KBUILD_CFLAGS += $(DISABLE_LTO)
-KASAN_SANITIZE := n
-UBSAN_SANITIZE := n
+KASAN_SANITIZE			:= n
+UBSAN_SANITIZE			:= n
+OBJECT_FILES_NON_STANDARD	:= y
 
 VDSO64-$(CONFIG_X86_64)		:= y
 VDSOX32-$(CONFIG_X86_X32_ABI)	:= y

@@ -16,6 +17,7 @@ vobjs-y := vdso-note.o vclock_gettime.o vgetcpu.o
 
 # files to link into kernel
 obj-y				+= vma.o
+OBJECT_FILES_NON_STANDARD_vma.o	:= n
 
 # vDSO images to build
 vdso_img-$(VDSO64-y)		+= 64

index b1b78ff..d5fb087 100644
@@ -16,9 +16,14 @@ CFLAGS_REMOVE_ftrace.o = -pg
 CFLAGS_REMOVE_early_printk.o = -pg
 endif
 
-KASAN_SANITIZE_head$(BITS).o := n
-KASAN_SANITIZE_dumpstack.o := n
-KASAN_SANITIZE_dumpstack_$(BITS).o := n
+KASAN_SANITIZE_head$(BITS).o				:= n
+KASAN_SANITIZE_dumpstack.o				:= n
+KASAN_SANITIZE_dumpstack_$(BITS).o			:= n
+
+OBJECT_FILES_NON_STANDARD_head_$(BITS).o		:= y
+OBJECT_FILES_NON_STANDARD_relocate_kernel_$(BITS).o	:= y
+OBJECT_FILES_NON_STANDARD_mcount_$(BITS).o		:= y
+OBJECT_FILES_NON_STANDARD_test_nx.o			:= y
 
 CFLAGS_irq.o := -I$(src)/../include/asm/trace
 

index 2846aaa..066619b 100644
@@ -1,3 +1,5 @@
+OBJECT_FILES_NON_STANDARD_efi_thunk_$(BITS).o := y
+
 obj-$(CONFIG_EFI) 		+= quirks.o efi.o efi_$(BITS).o efi_stub_$(BITS).o
 obj-$(CONFIG_ACPI_BGRT) += efi-bgrt.o
 obj-$(CONFIG_EARLY_PRINTK_EFI)	+= early_printk.o

index 2c835e3..92e3e1d 100644
@@ -1,3 +1,5 @@
+OBJECT_FILES_NON_STANDARD := y
+
 purgatory-y := purgatory.o stack.o setup-x86_$(BITS).o sha256.o entry64.o string.o
 
 targets += $(purgatory-y)

index e02c2c6..682c895 100644
@@ -6,7 +6,9 @@
 # for more details.
 #
 #
-KASAN_SANITIZE := n
+KASAN_SANITIZE			:= n
+OBJECT_FILES_NON_STANDARD	:= y
+
 subdir- := rm
 
 obj-y += init.o

index 3e75fcf..053abe7b0 100644
@@ -6,7 +6,8 @@
 # for more details.
 #
 #
-KASAN_SANITIZE := n
+KASAN_SANITIZE			:= n
+OBJECT_FILES_NON_STANDARD	:= y
 
 always := realmode.bin realmode.relocs
 

index aaf9c0b..68fa977 100644
@@ -23,6 +23,7 @@ KBUILD_CFLAGS			:= $(cflags-y) -DDISABLE_BRANCH_PROFILING \
 GCOV_PROFILE			:= n
 KASAN_SANITIZE			:= n
 UBSAN_SANITIZE			:= n
+OBJECT_FILES_NON_STANDARD	:= y
 
 lib-y				:= efi-stub-helper.o
 

index c11212f..19d9bca 100644
@@ -1,3 +1,5 @@
+OBJECT_FILES_NON_STANDARD := y
+
 hostprogs-y	:= modpost mk_elfconfig
 always		:= $(hostprogs-y) empty.o
 

2.4.3

Add a new macro, STACK_FRAME_NON_STANDARD, which is used to denote a function which does something unusual related to its stack frame. Use of the macro prevents objtool from emitting a false positive warning.

---
 arch/x86/kernel/vmlinux.lds.S |  5 ++++-
 include/linux/frame.h         | 23 +++++++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)
 create mode 100644 include/linux/frame.h

index 92dc211..13fa0ad 100644
@@ -343,7 +343,10 @@ SECTIONS
 
 	/* Sections to be discarded */
 	DISCARDS
-	/DISCARD/ : { *(.eh_frame) }
+	/DISCARD/ : {
+		*(.eh_frame)
+		*(__func_stack_frame_non_standard)
+	}
 }
 
 

new file mode 100644
index 0000000..e6baaba
@@ -0,0 +1,23 @@
+#ifndef _LINUX_FRAME_H
+#define _LINUX_FRAME_H
+
+#ifdef CONFIG_STACK_VALIDATION
+/*
+ * This macro marks the given function's stack frame as "non-standard", which
+ * tells objtool to ignore the function when doing stack metadata validation.
+ * It should only be used in special cases where you're 100% sure it won't
+ * affect the reliability of frame pointers and kernel stack traces.
+ *
+ * For more information, see tools/objtool/Documentation/stack-validation.txt.
+ */
+#define STACK_FRAME_NON_STANDARD(func) \
+	static void __used __section(__func_stack_frame_non_standard) \
+		*__func_stack_frame_non_standard_##func = func
+
+#else /* !CONFIG_STACK_VALIDATION */
+
+#define STACK_FRAME_NON_STANDARD(func)
+
+#endif /* CONFIG_STACK_VALIDATION */
+
+#endif /* _LINUX_FRAME_H */

2.4.3

objtool reports the following false positive warning:

arch/x86/xen/enlighten.o: warning: objtool: xen_cpuid()+0x41: can't find jump dest instruction at .text+0x108

The warning is due to xen_cpuid()'s use of XEN_EMULATE_PREFIX to insert some fake instructions which objtool doesn't know how to decode.

---
 arch/x86/xen/enlighten.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

index d09e4c9..5c45a69 100644
@@ -32,6 +32,7 @@
 #include <linux/gfp.h>
 #include <linux/memblock.h>
 #include <linux/edd.h>
+#include <linux/frame.h>
 
 #ifdef CONFIG_KEXEC_CORE
 #include <linux/kexec.h>

@@ -351,8 +352,8 @@ static void xen_cpuid(unsigned int *ax, unsigned int *bx,
 	*cx &= maskecx;
 	*cx |= setecx;
 	*dx &= maskedx;
-
 }
+STACK_FRAME_NON_STANDARD(xen_cpuid); /* XEN_EMULATE_PREFIX */
 
 static bool __init xen_check_mwait(void)
 {

2.4.3

objtool reports the following false positive warnings:

kernel/bpf/core.o: warning: objtool: __bpf_prog_run()+0x5c: sibling call from callable instruction with changed frame pointer kernel/bpf/core.o: warning: objtool: __bpf_prog_run()+0x60: function has unreachable instruction kernel/bpf/core.o: warning: objtool: __bpf_prog_run()+0x64: function has unreachable instruction
[...]

It's confused by the following dynamic jump instruction in __bpf_prog_run()::

jmp *(%r12,%rax,8)

which corresponds to the following line in the C code:

  goto *jumptable[insn->code];

There's no way for objtool to deterministically find all possible branch targets for a dynamic jump, so it can't verify this code.

In this case the jumps all stay within the function, and there's nothing unusual going on related to the stack, so we can whitelist the function.

---
 kernel/bpf/core.c | 2 ++
 1 file changed, 2 insertions(+)

index 972d9a8..be0abf6 100644
@@ -27,6 +27,7 @@
 #include <linux/random.h>
 #include <linux/moduleloader.h>
 #include <linux/bpf.h>
+#include <linux/frame.h>
 
 #include <asm/unaligned.h>
 

@@ -649,6 +650,7 @@ load_byte:
 		WARN_RATELIMIT(1, "unknown opcode %02x\n", insn->code);
 		return 0;
 }
+STACK_FRAME_NON_STANDARD(__bpf_prog_run); /* jump table */
 
 bool bpf_prog_array_compatible(struct bpf_array *array,
 			       const struct bpf_prog *fp)

2.4.3

objtool reports the following warnings for __schedule():

kernel/sched/core.o: warning: objtool:__schedule()+0x3c0: duplicate frame pointer save kernel/sched/core.o: warning: objtool:__schedule()+0x3fd: sibling call from callable instruction with changed frame pointer kernel/sched/core.o: warning: objtool:__schedule()+0x40a: call without frame pointer save/setup kernel/sched/core.o: warning: objtool:__schedule()+0x7fd: frame pointer state mismatch kernel/sched/core.o: warning: objtool:__schedule()+0x421: frame pointer state mismatch

Basically it's confused by two unusual attributes of the switch_to() macro:

1. It saves prev's frame pointer to the old stack and restores next's frame pointer from the new stack.

2. For new tasks it jumps directly to ret_from_fork.

Eventually it would probably be a good idea to clean up the ret_from_fork hack so that new tasks are created with a valid initial stack, as suggested by Andy:

https://lkml.kernel.org/r/CALCETrWsqCw4L1qKO9j9L5F+4ED4viuLQTFc=n1pKBZfFPQUFg@mail.gmail.com

Then __schedule() could return normally into the new code and objtool hopefully wouldn't have a problem anymore.

In the meantime, mark its stack frame as non-standard so we can have a baseline with no objtool warnings. The marker also serves as a reminder that this code could be improved a bit.

---
 kernel/sched/core.c | 2 ++
 1 file changed, 2 insertions(+)

index 9503d59..641043d 100644
@@ -74,6 +74,7 @@
 #include <linux/binfmts.h>
 #include <linux/context_tracking.h>
 #include <linux/compiler.h>
+#include <linux/frame.h>
 
 #include <asm/switch_to.h>
 #include <asm/tlb.h>

@@ -3288,6 +3289,7 @@ static void __sched notrace __schedule(bool preempt)
 
 	balance_callback(rq);
 }
+STACK_FRAME_NON_STANDARD(__schedule); /* switch_to() */
 
 static inline void sched_submit_work(struct task_struct *tsk)
 {

2.4.3

When CONFIG_GCOV is enabled, gcc decides to put context_switch() out-of-line, which is inconsistent with its normal behavior.

It also causes an objtool warning because __schedule() no longer inlines context_switch(), so the "STACK_FRAME_NON_STANDARD(__schedule)" statement loses its effect.

---
 kernel/sched/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 641043d..bb0daab 100644
@@ -2763,7 +2763,7 @@ asmlinkage __visible void schedule_tail(struct task_struct *prev)
 /*
  * context_switch - switch to the new MM and the new thread's register state.
  */
-static inline struct rq *
+static __always_inline struct rq *
 context_switch(struct rq *rq, struct task_struct *prev,
 	       struct task_struct *next)
 {

2.4.3

objtool reports the following warning for kretprobe_trampoline():

arch/x86/kernel/kprobes/core.o: warning: objtool: kretprobe_trampoline()+0x20: call without frame pointer save/setup

kretprobes are a special case where the stack is intentionally wrong. The return address isn't known at the beginning of the trampoline, so the stack frame can't be set up properly before it calls trampoline_handler().

Because kretprobe handlers don't sleep, the frame pointer doesn't *have* to be accurate in the trampoline. So it's ok to tell objtool to ignore it. This results in no actual changes to the generated code.

---
 arch/x86/kernel/kprobes/core.c | 2 ++
 1 file changed, 2 insertions(+)

index 48acaac..ae703ac 100644
@@ -49,6 +49,7 @@
 #include <linux/kdebug.h>
 #include <linux/kallsyms.h>
 #include <linux/ftrace.h>
+#include <linux/frame.h>
 
 #include <asm/cacheflush.h>
 #include <asm/desc.h>

@@ -703,6 +704,7 @@ asm(
 	".size kretprobe_trampoline, .-kretprobe_trampoline\n"
 );
 NOKPROBE_SYMBOL(kretprobe_trampoline);
+STACK_FRAME_NON_STANDARD(kretprobe_trampoline);
 
 /*
  * Called from kretprobe_trampoline

2.4.3

This adds a host tool named objtool which has a "check" subcommand which analyzes .o files to ensure the validity of stack metadata. It enforces a set of rules on asm code and C inline assembly code so that stack traces can be reliable.

For each function, it recursively follows all possible code paths and validates the correct frame pointer state at each instruction.

It also follows code paths involving kernel special sections, like .altinstructions, __jump_table, and __ex_table, which can add alternative execution paths to a given instruction (or set of instructions). Similarly, it knows how to follow switch statements, for which gcc sometimes uses jump tables.

Here are some of the benefits of validating stack metadata:

a) More reliable stack traces for frame pointer enabled kernels

Frame pointers are used for debugging purposes. They allow runtime code and debug tools to be able to walk the stack to determine the chain of function call sites that led to the currently executing code.

For some architectures, frame pointers are enabled by CONFIG_FRAME_POINTER. For some other architectures they may be required by the ABI (sometimes referred to as "backchain pointers").

For C code, gcc automatically generates instructions for setting up frame pointers when the -fno-omit-frame-pointer option is used.

But for asm code, the frame setup instructions have to be written by hand, which most people don't do. So the end result is that CONFIG_FRAME_POINTER is honored for C code but not for most asm code.

For stack traces based on frame pointers to be reliable, all functions which call other functions must first create a stack frame and update the frame pointer. If a first function doesn't properly create a stack frame before calling a second function, the *caller* of the first function will be skipped on the stack trace.

For example, consider the following example backtrace with frame pointers enabled:

     [<ffffffff81812584>] dump_stack+0x4b/0x63
     [<ffffffff812d6dc2>] cmdline_proc_show+0x12/0x30
     [<ffffffff8127f568>] seq_read+0x108/0x3e0
     [<ffffffff812cce62>] proc_reg_read+0x42/0x70
     [<ffffffff81256197>] __vfs_read+0x37/0x100
     [<ffffffff81256b16>] vfs_read+0x86/0x130
     [<ffffffff81257898>] SyS_read+0x58/0xd0
     [<ffffffff8181c1f2>] entry_SYSCALL_64_fastpath+0x12/0x76

It correctly shows that the caller of cmdline_proc_show() is seq_read().

If we remove the frame pointer logic from cmdline_proc_show() by replacing the frame pointer related instructions with nops, here's what it looks like instead:

     [<ffffffff81812584>] dump_stack+0x4b/0x63
     [<ffffffff812d6dc2>] cmdline_proc_show+0x12/0x30
     [<ffffffff812cce62>] proc_reg_read+0x42/0x70
     [<ffffffff81256197>] __vfs_read+0x37/0x100
     [<ffffffff81256b16>] vfs_read+0x86/0x130
     [<ffffffff81257898>] SyS_read+0x58/0xd0
     [<ffffffff8181c1f2>] entry_SYSCALL_64_fastpath+0x12/0x76

Notice that cmdline_proc_show()'s caller, seq_read(), has been skipped. Instead the stack trace seems to show that cmdline_proc_show() was called by proc_reg_read().

The benefit of "objtool check" here is that because it ensures that *all* functions honor CONFIG_FRAME_POINTER, no functions will ever[*] be skipped on a stack trace.

[*] unless an interrupt or exception has occurred at the very
beginning of a function before the stack frame has been created, or at the very end of the function after the stack frame has been destroyed. This is an inherent limitation of frame pointers.

b) 100% reliable stack traces for DWARF enabled kernels

This is not yet implemented. For more details about what is planned, see tools/objtool/Documentation/stack-validation.txt.

c) Higher live patching compatibility rate

This is not yet implemented. For more details about what is planned, see tools/objtool/Documentation/stack-validation.txt.

To achieve the validation, "objtool check" enforces the following rules:

1. Each callable function must be annotated as such with the ELF function type. In asm code, this is typically done using the ENTRY/ENDPROC macros. If objtool finds a return instruction outside of a function, it flags an error since that usually indicates callable code which should be annotated accordingly.

This rule is needed so that objtool can properly identify each callable function in order to analyze its stack metadata.

2. Conversely, each section of code which is *not* callable should *not* be annotated as an ELF function. The ENDPROC macro shouldn't be used in this case.

This rule is needed so that objtool can ignore non-callable code. Such code doesn't have to follow any of the other rules.

3. Each callable function which calls another function must have the correct frame pointer logic, if required by CONFIG_FRAME_POINTER or the architecture's back chain rules. This can by done in asm code with the FRAME_BEGIN/FRAME_END macros.

This rule ensures that frame pointer based stack traces will work as designed. If function A doesn't create a stack frame before calling function B, the _caller_ of function A will be skipped on the stack trace.

4. Dynamic jumps and jumps to undefined symbols are only allowed if:

a) the jump is part of a switch statement; or

b) the jump matches sibling call semantics and the frame pointer has the same value it had on function entry.

This rule is needed so that objtool can reliably analyze all of a function's code paths. If a function jumps to code in another file, and it's not a sibling call, objtool has no way to follow the jump because it only analyzes a single file at a time.

5. A callable function may not execute kernel entry/exit instructions. The only code which needs such instructions is kernel entry code, which shouldn't be be in callable functions anyway.

This rule is just a sanity check to ensure that callable functions return normally.

It currently only supports x86_64. I tried to make the code generic so that support for other architectures can hopefully be plugged in relatively easily.

On my Lenovo laptop with a i7-4810MQ 4-core/8-thread CPU, building the kernel with objtool checking every .o file adds about three seconds of total build time. It hasn't been optimized for performance yet, so there are probably some opportunities for better build performance.

---
 MAINTAINERS                                       |    5 +
 tools/Makefile                                    |   14 +-
 tools/objtool/.gitignore                          |    2 +
 tools/objtool/Build                               |   13 +
 tools/objtool/Documentation/stack-validation.txt  |  342 +++++++
 tools/objtool/Makefile                            |   60 ++
 tools/objtool/arch.h                              |   44 +
 tools/objtool/arch/x86/Build                      |   12 +
 tools/objtool/arch/x86/decode.c                   |  172 ++++
 tools/objtool/arch/x86/insn/gen-insn-attr-x86.awk |  387 ++++++++
 tools/objtool/arch/x86/insn/inat.c                |   97 ++
 tools/objtool/arch/x86/insn/inat.h                |  221 +++++
 tools/objtool/arch/x86/insn/inat_types.h          |   29 +
 tools/objtool/arch/x86/insn/insn.c                |  594 ++++++++++++
 tools/objtool/arch/x86/insn/insn.h                |  201 ++++
 tools/objtool/arch/x86/insn/x86-opcode-map.txt    |  984 +++++++++++++++++++
 tools/objtool/builtin-check.c                     | 1072 +++++++++++++++++++++
 tools/objtool/builtin.h                           |   22 +
 tools/objtool/elf.c                               |  403 ++++++++
 tools/objtool/elf.h                               |   79 ++
 tools/objtool/objtool.c                           |  136 +++
 tools/objtool/special.c                           |  193 ++++
 tools/objtool/special.h                           |   42 +
 tools/objtool/warn.h                              |   60 ++
 24 files changed, 5178 insertions(+), 6 deletions(-)
 create mode 100644 tools/objtool/.gitignore
 create mode 100644 tools/objtool/Build
 create mode 100644 tools/objtool/Documentation/stack-validation.txt
 create mode 100644 tools/objtool/Makefile
 create mode 100644 tools/objtool/arch.h
 create mode 100644 tools/objtool/arch/x86/Build
 create mode 100644 tools/objtool/arch/x86/decode.c
 create mode 100644 tools/objtool/arch/x86/insn/gen-insn-attr-x86.awk
 create mode 100644 tools/objtool/arch/x86/insn/inat.c
 create mode 100644 tools/objtool/arch/x86/insn/inat.h
 create mode 100644 tools/objtool/arch/x86/insn/inat_types.h
 create mode 100644 tools/objtool/arch/x86/insn/insn.c
 create mode 100644 tools/objtool/arch/x86/insn/insn.h
 create mode 100644 tools/objtool/arch/x86/insn/x86-opcode-map.txt
 create mode 100644 tools/objtool/builtin-check.c
 create mode 100644 tools/objtool/builtin.h
 create mode 100644 tools/objtool/elf.c
 create mode 100644 tools/objtool/elf.h
 create mode 100644 tools/objtool/objtool.c
 create mode 100644 tools/objtool/special.c
 create mode 100644 tools/objtool/special.h
 create mode 100644 tools/objtool/warn.h

index 2fa3303..545daaf 100644
@@ -7778,6 +7778,11 @@ L:	[email protected] (moderated for non-subscribers)
 S:	Maintained
 F:	sound/soc/codecs/tfa9879*
 
+OBJTOOL
+M:	Josh Poimboeuf <[email protected]>
+S:	Supported
+F:	tools/objtool/
+
 OMAP SUPPORT
 M:	Tony Lindgren <[email protected]>
 L:	[email protected]

index 6339f6a..cc2a37d 100644
@@ -20,6 +20,7 @@ help:
 	@echo '  perf                   - Linux performance measurement and analysis tool'
 	@echo '  selftests              - various kernel selftests'
 	@echo '  spi                    - spi tools'
+	@echo '  objtool                - an ELF object analysis tool'
 	@echo '  tmon                   - thermal monitoring and tuning tool'
 	@echo '  turbostat              - Intel CPU idle stats and freq reporting tool'
 	@echo '  usb                    - USB testing tools'

@@ -53,7 +54,7 @@ acpi: FORCE
 cpupower: FORCE
 	$(call descend,power/$@)
 
-cgroup firewire hv guest spi usb virtio vm net iio: FORCE
+cgroup firewire hv guest spi usb virtio vm net iio objtool: FORCE
 	$(call descend,$@)
 
 liblockdep: FORCE

@@ -85,7 +86,7 @@ freefall: FORCE
 all: acpi cgroup cpupower hv firewire lguest \
 		perf selftests turbostat usb \
 		virtio vm net x86_energy_perf_policy \
-		tmon freefall
+		tmon freefall objtool
 
 acpi_install:
 	$(call descend,power/$(@:_install=),install)

@@ -93,7 +94,7 @@ acpi_install:
 cpupower_install:
 	$(call descend,power/$(@:_install=),install)
 
-cgroup_install firewire_install hv_install lguest_install perf_install usb_install virtio_install vm_install net_install:
+cgroup_install firewire_install hv_install lguest_install perf_install usb_install virtio_install vm_install net_install objtool_install:
 	$(call descend,$(@:_install=),install)
 
 selftests_install:

@@ -111,7 +112,7 @@ freefall_install:
 install: acpi_install cgroup_install cpupower_install hv_install firewire_install lguest_install \
 		perf_install selftests_install turbostat_install usb_install \
 		virtio_install vm_install net_install x86_energy_perf_policy_install \
-		tmon_install freefall_install
+		tmon_install freefall_install objtool_install
 
 acpi_clean:
 	$(call descend,power/acpi,clean)

@@ -119,7 +120,7 @@ acpi_clean:
 cpupower_clean:
 	$(call descend,power/cpupower,clean)
 
-cgroup_clean hv_clean firewire_clean lguest_clean spi_clean usb_clean virtio_clean vm_clean net_clean iio_clean:
+cgroup_clean hv_clean firewire_clean lguest_clean spi_clean usb_clean virtio_clean vm_clean net_clean iio_clean objtool_clean:
 	$(call descend,$(@:_clean=),clean)
 
 liblockdep_clean:

@@ -155,6 +156,7 @@ build_clean:
 clean: acpi_clean cgroup_clean cpupower_clean hv_clean firewire_clean lguest_clean \
 		perf_clean selftests_clean turbostat_clean spi_clean usb_clean virtio_clean \
 		vm_clean net_clean iio_clean x86_energy_perf_policy_clean tmon_clean \
-		freefall_clean build_clean libbpf_clean libsubcmd_clean liblockdep_clean
+		freefall_clean build_clean libbpf_clean libsubcmd_clean liblockdep_clean \
+		objtool_clean
 
 .PHONY: FORCE

new file mode 100644
index 0000000..a0b3128
@@ -0,0 +1,2 @@
+arch/x86/insn/inat-tables.c
+objtool

new file mode 100644
index 0000000..0e89258
@@ -0,0 +1,13 @@
+objtool-y += arch/$(ARCH)/
+objtool-y += builtin-check.o
+objtool-y += elf.o
+objtool-y += special.o
+objtool-y += objtool.o
+
+objtool-y += libstring.o
+
+CFLAGS += -I$(srctree)/tools/lib
+
+$(OUTPUT)libstring.o: ../lib/string.c FORCE
+	$(call rule_mkdir)
+	$(call if_changed_dep,cc_o_c)

new file mode 100644
index 0000000..debbdb0
@@ -0,0 +1,12 @@
+objtool-y += decode.o
+
+inat_tables_script = arch/x86/insn/gen-insn-attr-x86.awk
+inat_tables_maps = arch/x86/insn/x86-opcode-map.txt
+
+$(OUTPUT)arch/x86/insn/inat-tables.c: $(inat_tables_script) $(inat_tables_maps)
+	$(call rule_mkdir)
+	$(Q)$(call echo-cmd,gen)$(AWK) -f $(inat_tables_script) $(inat_tables_maps) > $@
+
+$(OUTPUT)arch/x86/decode.o: $(OUTPUT)arch/x86/insn/inat-tables.c
+
+CFLAGS_decode.o += -I$(OUTPUT)arch/x86/insn

new file mode 100644
index 0000000..cb3c20c
@@ -0,0 +1,29 @@
+#ifndef _ASM_X86_INAT_TYPES_H
+#define _ASM_X86_INAT_TYPES_H
+/*
+ * x86 instruction attributes
+ *
+ * Written by Masami Hiramatsu <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+/* Instruction attributes */
+typedef unsigned int insn_attr_t;
+typedef unsigned char insn_byte_t;
+typedef signed int insn_value_t;
+
+#endif

new file mode 100644
index 0000000..34d2ba7

2.4.3

Part of the diff is not shown here. View the raw message.

Add a CONFIG_STACK_VALIDATION option which will run "objtool check" for each .o file to ensure the validity of its stack metadata.

---
 Makefile               |  5 ++++-
 arch/Kconfig           |  6 ++++++
 lib/Kconfig.debug      | 12 ++++++++++++
 scripts/Makefile.build | 39 +++++++++++++++++++++++++++++++++++----
 4 files changed, 57 insertions(+), 5 deletions(-)

index fbe1b92..62be03b 100644
@@ -993,7 +993,10 @@ prepare0: archprepare FORCE
 	$(Q)$(MAKE) $(build)=.
 
 # All the preparing..
-prepare: prepare0
+prepare: prepare0 prepare-objtool
+
+PHONY += prepare-objtool
+prepare-objtool: $(if $(CONFIG_STACK_VALIDATION), tools/objtool FORCE)
 
 # Generate some files
 # ---------------------------------------------------------------------------

index f6b649d..81869a5 100644
@@ -583,6 +583,12 @@ config HAVE_COPY_THREAD_TLS
 	  normal C parameter passing, rather than extracting the syscall
 	  argument from pt_regs.
 
+config HAVE_STACK_VALIDATION
+	bool
+	help
+	  Architecture supports the 'objtool check' host tool command, which
+	  performs compile-time stack metadata validation.
+
 #
 # ABI hall of shame
 #

index 8bfd1ac..8552656 100644
@@ -342,6 +342,18 @@ config FRAME_POINTER
 	  larger and slower, but it gives very useful debugging information
 	  in case of kernel bugs. (precise oopses/stacktraces/warnings)
 
+config STACK_VALIDATION
+	bool "Compile-time stack metadata validation"
+	depends on HAVE_STACK_VALIDATION
+	default n
+	help
+	  Add compile-time checks to validate stack metadata, including frame
+	  pointers (if CONFIG_FRAME_POINTER is enabled).  This helps ensure
+	  that runtime stack traces are more reliable.
+
+	  For more information, see
+	  tools/objtool/Documentation/stack-validation.txt.
+
 config DEBUG_FORCE_WEAK_PER_CPU
 	bool "Force weak per-cpu definitions"
 	depends on DEBUG_KERNEL

index 2c47f9c..130a452 100644
@@ -241,10 +241,32 @@ cmd_record_mcount =						\
 	fi;
 endif
 
+ifdef CONFIG_STACK_VALIDATION
+
+__objtool_obj := $(objtree)/tools/objtool/objtool
+
+objtool_args = check
+ifndef CONFIG_FRAME_POINTER
+objtool_args += --no-fp
+endif
+
+# 'OBJECT_FILES_NON_STANDARD := y': skip objtool checking for a directory
+# 'OBJECT_FILES_NON_STANDARD_foo.o := 'y': skip objtool checking for a file
+# 'OBJECT_FILES_NON_STANDARD_foo.o := 'n': override directory skip for a file
+cmd_objtool = $(if $(patsubst y%,, \
+	$(OBJECT_FILES_NON_STANDARD_$(basetarget).o)$(OBJECT_FILES_NON_STANDARD)n), \
+	$(__objtool_obj) $(objtool_args) "$(@)";)
+objtool_obj = $(if $(patsubst y%,, \
+	$(OBJECT_FILES_NON_STANDARD_$(basetarget).o)$(OBJECT_FILES_NON_STANDARD)n), \
+	$(__objtool_obj))
+
+endif # CONFIG_STACK_VALIDATION
+
 define rule_cc_o_c
 	$(call echo-cmd,checksrc) $(cmd_checksrc)			  \
 	$(call echo-cmd,cc_o_c) $(cmd_cc_o_c);				  \
 	$(cmd_modversions)						  \
+	$(cmd_objtool)						  \
 	$(call echo-cmd,record_mcount)					  \
 	$(cmd_record_mcount)						  \
 	scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' >    \

@@ -253,14 +275,23 @@ define rule_cc_o_c
 	mv -f $(dot-target).tmp $(dot-target).cmd
 endef
 
+define rule_as_o_S
+	$(call echo-cmd,as_o_S) $(cmd_as_o_S);				  \
+	$(cmd_objtool)						  \
+	scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,as_o_S)' >    \
+	                                              $(dot-target).tmp;  \
+	rm -f $(depfile);						  \
+	mv -f $(dot-target).tmp $(dot-target).cmd
+endef
+
 # Built-in and composite module parts
-$(obj)/%.o: $(src)/%.c $(recordmcount_source) FORCE
+$(obj)/%.o: $(src)/%.c $(recordmcount_source) $(objtool_obj) FORCE
 	$(call cmd,force_checksrc)
 	$(call if_changed_rule,cc_o_c)
 
 # Single-part modules are special since we need to mark them in $(MODVERDIR)
 
-$(single-used-m): $(obj)/%.o: $(src)/%.c $(recordmcount_source) FORCE
+$(single-used-m): $(obj)/%.o: $(src)/%.c $(recordmcount_source) $(objtool_obj) FORCE
 	$(call cmd,force_checksrc)
 	$(call if_changed_rule,cc_o_c)
 	@{ echo $(@:.o=.ko); echo $@; } > $(MODVERDIR)/$(@F:.o=.mod)

@@ -290,8 +321,8 @@ $(obj)/%.s: $(src)/%.S FORCE
 quiet_cmd_as_o_S = AS $(quiet_modtag)  $@
 cmd_as_o_S       = $(CC) $(a_flags) -c -o $@ $<
 
-$(obj)/%.o: $(src)/%.S FORCE
-	$(call if_changed_dep,as_o_S)
+$(obj)/%.o: $(src)/%.S $(objtool_obj) FORCE
+	$(call if_changed_rule,as_o_S)
 
 targets += $(real-objs-y) $(real-objs-m) $(lib-y)
 targets += $(extra-y) $(MAKECMDGOALS) $(always)

2.4.3

|./mk-x86-64.sh -j1
|make[1]: Entering directory '/home/bigeasy/linux-tip/build/linux-x8664'
|  CHK     include/config/kernel.release
|  Using /home/bigeasy/linux-tip as source for kernel
|  GEN     ./Makefile
|  CHK     include/generated/uapi/linux/version.h
|  CHK     include/generated/utsrelease.h
|  CHK     include/generated/bounds.h
|  CHK     include/generated/timeconst.h
|  CHK     include/generated/asm-offsets.h
|  CALL    /home/bigeasy/linux-tip/scripts/checksyscalls.sh
|scripts/Makefile.include:3: *** O=build/linux-x8664 does not exist.  Stop.
|/home/bigeasy/linux-tip/Makefile:1518: recipe for target 'tools/objtool' failed
|make[1]: *** [tools/objtool] Error 2
|make[1]: Leaving directory '/home/bigeasy/linux-tip/build/linux-x8664'
|Makefile:146: recipe for target 'sub-make' failed
|make: *** [sub-make] Error 2

with

|$ cat mk-x86-64.sh 
|#!/bin/sh
|export PATH=/usr/lib/ccache/:$PATH
|exec make O=build/linux-x8664 -j 8 $*

Is this know? I tried the TIP tree as of now. It works with CONFIG_STACK_VALIDATION=n

Sebastian

Hi Sebastian,

This bug happens when using a relative path for 'O=' with CONFIG_STACK_VALIDATION. I posted a patch to fix it:

https://lkml.kernel.org/r/94a078c6c998fac9f01a14f574008bf7dff40191.1457016803.git.jpoimboe@redhat.com

Josh

Set HAVE_STACK_VALIDATION to enable stack metadata validation for x86_64.

---
 arch/x86/Kconfig | 1 +
 1 file changed, 1 insertion(+)

index c46662f..adc5a6d 100644
@@ -155,6 +155,7 @@ config X86
 	select VIRT_TO_BUS
 	select X86_DEV_DMA_OPS			if X86_64
 	select X86_FEATURE_NAMES		if PROC_FS
+	select HAVE_STACK_VALIDATION		if X86_64
 
 config INSTRUCTION_DECODER
 	def_bool y

2.4.3

So I've upgraded my main build box to Fedora 23, to:

gcc version 5.3.1 20151207 (Red Hat 5.3.1-2) (GCC)
GNU assembler version 2.25 (x86_64-redhat-linux) using BFD version version 2.25-15.fc23 GNU ld version 2.25-15.fc23

and I'm now getting a bunch of these warnings:

drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x2e7: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x2f3: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x2ff: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x30b: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x317: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x323: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x32f: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x33b: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x348: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x355: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x362: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x36f: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x37c: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x389: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x396: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x2e7: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x2f3: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x2ff: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x30b: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x317: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x323: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x32f: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x33b: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x348: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x355: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x362: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x36f: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x37c: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x389: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x396: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x19a: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x1a6: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x1b2: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x1be: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x1ca: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x1d6: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x1e2: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x1ee: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x1ff: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x210: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x221: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x251: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x262: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x273: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x284: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x295: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x2a6: frame pointer state mismatch drivers/net/wireless/realtek/rtlwifi/base.o: warning: objtool: rtlwifi_rate_mapping()+0x2b7: frame pointer state mismatch

I see nothing particularly weird about rtlwifi_rate_mapping(), except the tons of switch statements - maybe GCC does something really clever here?

In any case this needs to be addressed before the merge window. Also, I think we should limit the number of objtool warnings to one per function?

Thanks,

Ingo

This is a bug in objtool's handling of switch statement jump tables. In fact, the 0-day bot warned me about this bug yesterday, but I misinterpreted it:

https://lkml.kernel.org/r/201603060006.yNZ9xTcs%[email protected]

I'll fix it up today. I'll also limit the warnings to one per function.

BTW, I was only able to recreate this particular issue after updating to today's tip/master. It was triggered by a new config option:
CONFIG_UBSAN_SANITIZE_ALL.

Josh

ah, makes sense! I also upgraded to the latestest Fedora and misinterpreted the warning.

Btw., I like it how in other cases you didn't try to work the warning around in objtool, but improved the C code itself. We can consider this warning as a 'unnecessarily complex switch statement' warning.

For example in this case I think we could use something like the patch below, because in reality the various cases are linear ranges. Totally untested.

Thanks,

Ingo

 drivers/net/wireless/realtek/rtlwifi/base.c | 196 ++--------------------------
 1 file changed, 12 insertions(+), 184 deletions(-)

index 0517a4f2d3f2..a8c4e5b5bebd 100644
@@ -890,201 +890,29 @@ int rtlwifi_rate_mapping(struct ieee80211_hw *hw, bool isht, bool isvht,
 	int rate_idx;
 
 	if (isvht) {
-		switch (desc_rate) {
-		case DESC_RATEVHT1SS_MCS0:
-			rate_idx = 0;
-			break;
-		case DESC_RATEVHT1SS_MCS1:
-			rate_idx = 1;
-			break;
-		case DESC_RATEVHT1SS_MCS2:
-			rate_idx = 2;
-			break;
-		case DESC_RATEVHT1SS_MCS3:
-			rate_idx = 3;
-			break;
-		case DESC_RATEVHT1SS_MCS4:
-			rate_idx = 4;
-			break;
-		case DESC_RATEVHT1SS_MCS5:
-			rate_idx = 5;
-			break;
-		case DESC_RATEVHT1SS_MCS6:
-			rate_idx = 6;
-			break;
-		case DESC_RATEVHT1SS_MCS7:
-			rate_idx = 7;
-			break;
-		case DESC_RATEVHT1SS_MCS8:
-			rate_idx = 8;
-			break;
-		case DESC_RATEVHT1SS_MCS9:
-			rate_idx = 9;
-			break;
-		case DESC_RATEVHT2SS_MCS0:
-			rate_idx = 0;
-			break;
-		case DESC_RATEVHT2SS_MCS1:
-			rate_idx = 1;
-			break;
-		case DESC_RATEVHT2SS_MCS2:
-			rate_idx = 2;
-			break;
-		case DESC_RATEVHT2SS_MCS3:
-			rate_idx = 3;
-			break;
-		case DESC_RATEVHT2SS_MCS4:
-			rate_idx = 4;
-			break;
-		case DESC_RATEVHT2SS_MCS5:
-			rate_idx = 5;
-			break;
-		case DESC_RATEVHT2SS_MCS6:
-			rate_idx = 6;
-			break;
-		case DESC_RATEVHT2SS_MCS7:
-			rate_idx = 7;
-			break;
-		case DESC_RATEVHT2SS_MCS8:
-			rate_idx = 8;
-			break;
-		case DESC_RATEVHT2SS_MCS9:
-			rate_idx = 9;
-			break;
-		default:
+		if (desc_rate >= DESC_RATEVHT1SS_MCS0 && desc_rate <= DESC_RATEVHT2SS_MCS9)
+			rate_idx = desc_rate-DESC_RATEVHT1SS_MCS0;
+		else
 			rate_idx = 0;
-			break;
-		}
 		return rate_idx;
 	}
 	if (false == isht) {
 		if (IEEE80211_BAND_2GHZ == hw->conf.chandef.chan->band) {
-			switch (desc_rate) {
-			case DESC_RATE1M:
-				rate_idx = 0;
-				break;
-			case DESC_RATE2M:
-				rate_idx = 1;
-				break;
-			case DESC_RATE5_5M:
-				rate_idx = 2;
-				break;
-			case DESC_RATE11M:
-				rate_idx = 3;
-				break;
-			case DESC_RATE6M:
-				rate_idx = 4;
-				break;
-			case DESC_RATE9M:
-				rate_idx = 5;
-				break;
-			case DESC_RATE12M:
-				rate_idx = 6;
-				break;
-			case DESC_RATE18M:
-				rate_idx = 7;
-				break;
-			case DESC_RATE24M:
-				rate_idx = 8;
-				break;
-			case DESC_RATE36M:
-				rate_idx = 9;
-				break;
-			case DESC_RATE48M:
-				rate_idx = 10;
-				break;
-			case DESC_RATE54M:
-				rate_idx = 11;
-				break;
-			default:
+			if (desc_rate <= DESC_RATE54M)
+				rate_idx = desc_rate;
+			else
 				rate_idx = 0;
-				break;
-			}
 		} else {
-			switch (desc_rate) {
-			case DESC_RATE6M:
-				rate_idx = 0;
-				break;
-			case DESC_RATE9M:
-				rate_idx = 1;
-				break;
-			case DESC_RATE12M:
-				rate_idx = 2;
-				break;
-			case DESC_RATE18M:
-				rate_idx = 3;
-				break;
-			case DESC_RATE24M:
-				rate_idx = 4;
-				break;
-			case DESC_RATE36M:
-				rate_idx = 5;
-				break;
-			case DESC_RATE48M:
-				rate_idx = 6;
-				break;
-			case DESC_RATE54M:
-				rate_idx = 7;
-				break;
-			default:
+			if (desc_rate >= DESC_RATE6M && desc_rate <= DESC_RATE54M)
+				rate_idx = desc_rate-DESC_RATE6M;
+			else
 				rate_idx = 0;
-				break;
-			}
 		}
 	} else {
-		switch (desc_rate) {
-		case DESC_RATEMCS0:
-			rate_idx = 0;
-			break;
-		case DESC_RATEMCS1:
-			rate_idx = 1;
-			break;
-		case DESC_RATEMCS2:
-			rate_idx = 2;
-			break;
-		case DESC_RATEMCS3:
-			rate_idx = 3;
-			break;
-		case DESC_RATEMCS4:
-			rate_idx = 4;
-			break;
-		case DESC_RATEMCS5:
-			rate_idx = 5;
-			break;
-		case DESC_RATEMCS6:
-			rate_idx = 6;
-			break;
-		case DESC_RATEMCS7:
-			rate_idx = 7;
-			break;
-		case DESC_RATEMCS8:
-			rate_idx = 8;
-			break;
-		case DESC_RATEMCS9:
-			rate_idx = 9;
-			break;
-		case DESC_RATEMCS10:
-			rate_idx = 10;
-			break;
-		case DESC_RATEMCS11:
-			rate_idx = 11;
-			break;
-		case DESC_RATEMCS12:
-			rate_idx = 12;
-			break;
-		case DESC_RATEMCS13:
-			rate_idx = 13;
-			break;
-		case DESC_RATEMCS14:
-			rate_idx = 14;
-			break;
-		case DESC_RATEMCS15:
-			rate_idx = 15;
-			break;
-		default:
+		if (desc_rate >= DESC_RATEMCS0 && desc_rate <= DESC_RATEMCS15)
+			rate_idx = desc_rate-DESC_RATEMCS0;
+		else
 			rate_idx = 0;
-			break;
-		}
 	}
 	return rate_idx;
 }

So the bug is that when there's more than one switch statement in a function, objtool interprets all the switch jump tables as a single table. If the targets of one jump table assume a stack frame and the targets of another one don't, you'll see frame pointer warnings like those above.

It *is* interesting that both functions which triggered this bug -- rtlwifi_rate_mapping() and cik_tiling_mode_table_init() -- are cases where the code is way too complex and can be simplified.

But, unless we want to institute an "only one switch statement allowed per function" policy, I think I should still fix the bug. Because I don't really have the clout to tell people "you need to clean up your code because my tool is buggy." :-)

Josh

Yeah, agreed!

Thanks,

Ingo

so there's a much more serious objtool bug that I found today, apparently it can get into an infinite loop with certain randconfigs:

   PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND                                                                                                          
104261 mingo     39  19    8672    936    840 R 100.0  0.0 115:03.97 objtool                                                                                                          
104485 mingo     39  19    8672    876    780 R 100.0  0.0 115:03.71 objtool                                                                                                          
115277 mingo     39  19    8808    892    796 R 100.0  0.0 114:59.38 objtool                  

unfortunately 'perf record -g' does not seem to be able to resolve it:

fomalhaut:~> perf record -g -p 104261 -a sleep 1
Warning:
PID/TID switch overriding SYSTEM[ perf record: Woken up 17 times to write data ] [ perf record: Captured and wrote 4.076 MB perf.data (4015 samples) ]

Samples: 4K of event 'cycles:ppp', Event count (approx.): 3342262267

  Children      Self  Command  Shared Object      Symbol                                                                                                                              
+  100.00%     0.00%  objtool  [unknown]          [k] 0x000000000184bf00
+  100.00%     0.00%  objtool  [unknown]          [k] 0x000000000184bf70
+  100.00%     0.00%  objtool  [unknown]          [k] 0x000000000184bfe0
+  100.00%     0.00%  objtool  [unknown]          [k] 0x000000000184c050
+  100.00%     0.00%  objtool  [unknown]          [k] 0x000000000184c0c0
+  100.00%     0.00%  objtool  [unknown]          [k] 0x000000000184c130
+  100.00%     0.00%  objtool  [unknown]          [k] 0x000000000184c1a0
+  100.00%     0.00%  objtool  [unknown]          [k] 0x000000000184c210
+  100.00%     0.00%  objtool  [unknown]          [k] 0x000000000184c280
+  100.00%     0.00%  objtool  [unknown]          [k] 0x000000000184c2f0
+  100.00%     0.00%  objtool  [unknown]          [k] 0x000000000184c360
+  100.00%     0.00%  objtool  [unknown]          [k] 0x000000000184c3d0
+  100.00%     0.00%  objtool  [unknown]          [k] 0x000000000184c440
+  100.00%     0.00%  objtool  [unknown]          [k] 0x000000000184c4b0
+  100.00%     0.00%  objtool  [unknown]          [k] 0x000000000184c520

Plain 'perf top' shows:

Overhead  Shared Object       Symbol                                                                                                                                                  
  95.36%  objtool             [.] validate_branch
   2.36%  objtool             [.] find_symbol_by_offset
   0.50%  libc-2.22.so        [.] __strcmp_sse2_unaligned
   0.47%  [kernel]            [k] nmi
   0.06%  [kernel]            [k] format_decode
   0.05%  objtool             [.] strcmp@plt

I've attached the config that triggers it.

Thanks,

Ingo

#
# Automatically generated file; DO NOT EDIT.
# Linux/x86_64 4.5.0-rc7 Kernel Configuration
#
CONFIG_64BIT=y
CONFIG_X86_64=y
CONFIG_X86=y
CONFIG_INSTRUCTION_DECODER=y
CONFIG_PERF_EVENTS_INTEL_UNCORE=y
CONFIG_OUTPUT_FORMAT="elf64-x86-64"
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/x86_64_defconfig"
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_MMU=y
CONFIG_ARCH_MMAP_RND_BITS_MIN=28
CONFIG_ARCH_MMAP_RND_BITS_MAX=32
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_ZONE_DMA32=y
CONFIG_AUDIT_ARCH=y
CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_X86_64_SMP=y
CONFIG_ARCH_HWEIGHT_CFLAGS="-fcall-saved-rdi -fcall-saved-rsi -fcall-saved-rdx -fcall-saved-rcx -fcall-saved-r8 -fcall-saved-r9 -fcall-saved-r10 -fcall-saved-r11" CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_DEBUG_RODATA=y
CONFIG_PGTABLE_LEVELS=4
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_EXTABLE_SORT=y

#
# General setup
#
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_CROSS_COMPILE=""
# CONFIG_COMPILE_TEST is not set
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
# CONFIG_KERNEL_GZIP is not set
CONFIG_KERNEL_BZIP2=y
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not set
CONFIG_DEFAULT_HOSTNAME="(none)"
CONFIG_SWAP=y
# CONFIG_SYSVIPC is not set
CONFIG_POSIX_MQUEUE=y
CONFIG_POSIX_MQUEUE_SYSCTL=y
CONFIG_CROSS_MEMORY_ATTACH=y
CONFIG_FHANDLE=y
# CONFIG_USELIB is not set
CONFIG_AUDIT=y
CONFIG_HAVE_ARCH_AUDITSYSCALL=y
CONFIG_AUDITSYSCALL=y
CONFIG_AUDIT_WATCH=y
CONFIG_AUDIT_TREE=y

#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_GENERIC_IRQ_CHIP=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_DOMAIN_HIERARCHY=y
# CONFIG_IRQ_DOMAIN_DEBUG is not set
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_ARCH_CLOCKSOURCE_DATA=y
CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y
CONFIG_GENERIC_CMOS_UPDATE=y

#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
CONFIG_HZ_PERIODIC=y
# CONFIG_NO_HZ_IDLE is not set
# CONFIG_NO_HZ_FULL is not set
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y

#
# CPU/Task time and stats accounting
#
# CONFIG_TICK_CPU_ACCOUNTING is not set
# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
CONFIG_IRQ_TIME_ACCOUNTING=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y

#
# RCU Subsystem
#
CONFIG_TREE_RCU=y
CONFIG_RCU_EXPERT=y
CONFIG_SRCU=y
CONFIG_TASKS_RCU=y
CONFIG_RCU_STALL_COMMON=y
CONFIG_RCU_FANOUT=64
CONFIG_RCU_FANOUT_LEAF=16
CONFIG_TREE_RCU_TRACE=y
CONFIG_RCU_KTHREAD_PRIO=0
CONFIG_RCU_NOCB_CPU=y
# CONFIG_RCU_NOCB_CPU_NONE is not set
# CONFIG_RCU_NOCB_CPU_ZERO is not set
CONFIG_RCU_NOCB_CPU_ALL=y
# CONFIG_RCU_EXPEDITE_BOOT is not set
CONFIG_BUILD_BIN2C=y
CONFIG_IKCONFIG=y
# CONFIG_IKCONFIG_PROC is not set
CONFIG_LOG_BUF_SHIFT=20
CONFIG_LOG_CPU_MAX_BUF_SHIFT=12
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y
CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y
CONFIG_ARCH_SUPPORTS_INT128=y
CONFIG_CGROUPS=y
CONFIG_PAGE_COUNTER=y
CONFIG_MEMCG=y
CONFIG_MEMCG_SWAP=y
# CONFIG_MEMCG_SWAP_ENABLED is not set
# CONFIG_BLK_CGROUP is not set
CONFIG_CGROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
CONFIG_CFS_BANDWIDTH=y
CONFIG_RT_GROUP_SCHED=y
CONFIG_CGROUP_PIDS=y
# CONFIG_CGROUP_FREEZER is not set
CONFIG_CPUSETS=y
# CONFIG_PROC_PID_CPUSET is not set
# CONFIG_CGROUP_DEVICE is not set
# CONFIG_CGROUP_CPUACCT is not set
CONFIG_CGROUP_PERF=y
# CONFIG_CGROUP_DEBUG is not set
# CONFIG_CHECKPOINT_RESTORE is not set
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
# CONFIG_IPC_NS is not set
CONFIG_USER_NS=y
# CONFIG_PID_NS is not set
CONFIG_NET_NS=y
CONFIG_SCHED_AUTOGROUP=y
CONFIG_SYSFS_DEPRECATED=y
# CONFIG_SYSFS_DEPRECATED_V2 is not set
CONFIG_RELAY=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_RD_GZIP=y
CONFIG_RD_BZIP2=y
CONFIG_RD_LZMA=y
# CONFIG_RD_XZ is not set
CONFIG_RD_LZO=y
CONFIG_RD_LZ4=y
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
CONFIG_ANON_INODES=y
CONFIG_HAVE_UID16=y
CONFIG_SYSCTL_EXCEPTION_TRACE=y
CONFIG_HAVE_PCSPKR_PLATFORM=y
CONFIG_BPF=y
CONFIG_EXPERT=y
CONFIG_UID16=y
CONFIG_MULTIUSER=y
CONFIG_SGETMASK_SYSCALL=y
# CONFIG_SYSFS_SYSCALL is not set
# CONFIG_SYSCTL_SYSCALL is not set
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
CONFIG_PRINTK=y
# CONFIG_BUG is not set
# CONFIG_PCSPKR_PLATFORM is not set
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
# CONFIG_BPF_SYSCALL is not set
CONFIG_SHMEM=y
CONFIG_AIO=y
# CONFIG_ADVISE_SYSCALLS is not set
CONFIG_USERFAULTFD=y
CONFIG_PCI_QUIRKS=y
# CONFIG_MEMBARRIER is not set
# CONFIG_EMBEDDED is not set
CONFIG_HAVE_PERF_EVENTS=y

#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
CONFIG_VM_EVENT_COUNTERS=y
# CONFIG_SLUB_DEBUG is not set
CONFIG_COMPAT_BRK=y
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB is not set
CONFIG_SLUB_CPU_PARTIAL=y
# CONFIG_SYSTEM_DATA_VERIFICATION is not set
CONFIG_PROFILING=y
CONFIG_TRACEPOINTS=y
CONFIG_KEXEC_CORE=y
CONFIG_OPROFILE=y
# CONFIG_OPROFILE_EVENT_MULTIPLEX is not set
CONFIG_HAVE_OPROFILE=y
CONFIG_OPROFILE_NMI_TIMER=y
CONFIG_JUMP_LABEL=y
# CONFIG_STATIC_KEYS_SELFTEST is not set
# CONFIG_UPROBES is not set
# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_USER_RETURN_NOTIFIER=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_KPROBES_ON_FTRACE=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_CLK=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y
CONFIG_HAVE_USER_RETURN_NOTIFIER=y
CONFIG_HAVE_PERF_EVENTS_NMI=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
CONFIG_HAVE_CMPXCHG_LOCAL=y
CONFIG_HAVE_CMPXCHG_DOUBLE=y
CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y
CONFIG_ARCH_WANT_OLD_COMPAT_IPC=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
CONFIG_SECCOMP_FILTER=y
CONFIG_HAVE_CC_STACKPROTECTOR=y
# CONFIG_CC_STACKPROTECTOR is not set
CONFIG_CC_STACKPROTECTOR_NONE=y
# CONFIG_CC_STACKPROTECTOR_REGULAR is not set
# CONFIG_CC_STACKPROTECTOR_STRONG is not set
CONFIG_HAVE_CONTEXT_TRACKING=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_HAVE_ARCH_HUGE_VMAP=y
CONFIG_HAVE_ARCH_SOFT_DIRTY=y
CONFIG_MODULES_USE_ELF_RELA=y
CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
CONFIG_ARCH_HAS_PGD_INIT_LATE=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
CONFIG_ARCH_MMAP_RND_BITS=28
CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y
CONFIG_ARCH_MMAP_RND_COMPAT_BITS=8
CONFIG_HAVE_COPY_THREAD_TLS=y
CONFIG_HAVE_STACK_VALIDATION=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_COMPAT_OLD_SIGACTION=y

#
# GCOV-based kernel profiling
#
# CONFIG_GCOV_KERNEL is not set
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
# CONFIG_MODULES is not set
CONFIG_MODULES_TREE_LOOKUP=y
CONFIG_BLOCK=y
CONFIG_BLK_DEV_BSG=y
CONFIG_BLK_DEV_BSGLIB=y
# CONFIG_BLK_DEV_INTEGRITY is not set
CONFIG_BLK_CMDLINE_PARSER=y

#
# Partition Types
#
CONFIG_PARTITION_ADVANCED=y
# CONFIG_ACORN_PARTITION is not set
CONFIG_AIX_PARTITION=y
# CONFIG_OSF_PARTITION is not set
CONFIG_AMIGA_PARTITION=y
# CONFIG_ATARI_PARTITION is not set
# CONFIG_MAC_PARTITION is not set
CONFIG_MSDOS_PARTITION=y
CONFIG_BSD_DISKLABEL=y
# CONFIG_MINIX_SUBPARTITION is not set
CONFIG_SOLARIS_X86_PARTITION=y
CONFIG_UNIXWARE_DISKLABEL=y
# CONFIG_LDM_PARTITION is not set
# CONFIG_SGI_PARTITION is not set
# CONFIG_ULTRIX_PARTITION is not set
CONFIG_SUN_PARTITION=y
# CONFIG_KARMA_PARTITION is not set
CONFIG_EFI_PARTITION=y
# CONFIG_SYSV68_PARTITION is not set
CONFIG_CMDLINE_PARTITION=y
CONFIG_BLOCK_COMPAT=y

#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_DEADLINE=y
# CONFIG_IOSCHED_CFQ is not set
# CONFIG_DEFAULT_DEADLINE is not set
CONFIG_DEFAULT_NOOP=y
CONFIG_DEFAULT_IOSCHED="noop"
CONFIG_PREEMPT_NOTIFIERS=y
CONFIG_PADATA=y
CONFIG_ASN1=y
CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
CONFIG_INLINE_READ_UNLOCK=y
CONFIG_INLINE_READ_UNLOCK_IRQ=y
CONFIG_INLINE_WRITE_UNLOCK=y
CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_RWSEM_SPIN_ON_OWNER=y
CONFIG_LOCK_SPIN_ON_OWNER=y
CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
CONFIG_QUEUED_SPINLOCKS=y
CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
CONFIG_QUEUED_RWLOCKS=y
CONFIG_FREEZER=y

#
# Processor type and features
#
CONFIG_ZONE_DMA=y
CONFIG_SMP=y
CONFIG_X86_FEATURE_NAMES=y CONFIG_X86_FAST_FEATURE_TESTS=y
# CONFIG_X86_X2APIC is not set
# CONFIG_X86_MPPARSE is not set CONFIG_X86_EXTENDED_PLATFORM=y
CONFIG_X86_VSMP=y
# CONFIG_X86_GOLDFISH is not set
# CONFIG_X86_INTEL_LPSS is not set CONFIG_X86_AMD_PLATFORM_DEVICE=y CONFIG_IOSF_MBI=y
# CONFIG_IOSF_MBI_DEBUG is not set CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y CONFIG_SCHED_OMIT_FRAME_POINTER=y CONFIG_HYPERVISOR_GUEST=y
CONFIG_PARAVIRT=y
CONFIG_PARAVIRT_DEBUG=y
# CONFIG_PARAVIRT_SPINLOCKS is not set
# CONFIG_XEN is not set
# CONFIG_KVM_GUEST is not set
# CONFIG_PARAVIRT_TIME_ACCOUNTING is not set CONFIG_NO_BOOTMEM=y
CONFIG_MK8=y
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not set
# CONFIG_GENERIC_CPU is not set CONFIG_X86_INTERNODE_CACHE_SHIFT=12 CONFIG_X86_L1_CACHE_SHIFT=6 CONFIG_X86_INTEL_USERCOPY=y CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_CMOV=y CONFIG_X86_MINIMUM_CPU_FAMILY=64 CONFIG_X86_DEBUGCTLMSR=y
# CONFIG_PROCESSOR_SELECT is not set CONFIG_CPU_SUP_INTEL=y
CONFIG_CPU_SUP_AMD=y
CONFIG_CPU_SUP_CENTAUR=y
CONFIG_HPET_TIMER=y
CONFIG_DMI=y
# CONFIG_GART_IOMMU is not set CONFIG_CALGARY_IOMMU=y
# CONFIG_CALGARY_IOMMU_ENABLED_BY_DEFAULT is not set CONFIG_SWIOTLB=y
CONFIG_IOMMU_HELPER=y
CONFIG_MAXSMP=y
CONFIG_NR_CPUS=8192
# CONFIG_SCHED_SMT is not set
# CONFIG_SCHED_MC is not set
# CONFIG_PREEMPT_NONE is not set CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set CONFIG_PREEMPT_COUNT=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
# CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS is not set CONFIG_X86_MCE=y
CONFIG_X86_MCE_INTEL=y
CONFIG_X86_MCE_AMD=y
CONFIG_X86_MCE_THRESHOLD=y
# CONFIG_X86_MCE_INJECT is not set CONFIG_X86_THERMAL_VECTOR=y
# CONFIG_VM86 is not set CONFIG_X86_VSYSCALL_EMULATION=y
# CONFIG_I8K is not set
# CONFIG_MICROCODE is not set
CONFIG_X86_MSR=y
# CONFIG_X86_CPUID is not set CONFIG_ARCH_PHYS_ADDR_T_64BIT=y CONFIG_ARCH_DMA_ADDR_T_64BIT=y CONFIG_X86_DIRECT_GBPAGES=y
# CONFIG_NUMA is not set CONFIG_ARCH_SPARSEMEM_ENABLE=y CONFIG_ARCH_SPARSEMEM_DEFAULT=y CONFIG_ARCH_SELECT_MEMORY_MODEL=y CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000 CONFIG_SELECT_MEMORY_MODEL=y CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_HAVE_MEMORY_PRESENT=y CONFIG_SPARSEMEM_EXTREME=y CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y CONFIG_SPARSEMEM_ALLOC_MEM_MAP_TOGETHER=y
# CONFIG_SPARSEMEM_VMEMMAP is not set CONFIG_HAVE_MEMBLOCK=y CONFIG_HAVE_MEMBLOCK_NODE_MAP=y CONFIG_ARCH_DISCARD_MEMBLOCK=y CONFIG_MEMORY_ISOLATION=y
# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
# CONFIG_MEMORY_HOTPLUG is not set CONFIG_SPLIT_PTLOCK_CPUS=4 CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y CONFIG_MEMORY_BALLOON=y CONFIG_BALLOON_COMPACTION=y
CONFIG_COMPACTION=y
CONFIG_MIGRATION=y
CONFIG_PHYS_ADDR_T_64BIT=y CONFIG_ZONE_DMA_FLAG=1
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
CONFIG_MMU_NOTIFIER=y
# CONFIG_KSM is not set CONFIG_DEFAULT_MMAP_MIN_ADDR=4096 CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y
# CONFIG_MEMORY_FAILURE is not set CONFIG_TRANSPARENT_HUGEPAGE=y
# CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS is not set CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y CONFIG_CLEANCACHE=y
CONFIG_FRONTSWAP=y
CONFIG_CMA=y
# CONFIG_CMA_DEBUG is not set
# CONFIG_CMA_DEBUGFS is not set CONFIG_CMA_AREAS=7
CONFIG_ZSWAP=y
CONFIG_ZPOOL=y
# CONFIG_ZBUD is not set
CONFIG_ZSMALLOC=y
# CONFIG_PGTABLE_MAPPING is not set
# CONFIG_ZSMALLOC_STAT is not set CONFIG_GENERIC_EARLY_IOREMAP=y CONFIG_ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT=y CONFIG_IDLE_PAGE_TRACKING=y CONFIG_FRAME_VECTOR=y CONFIG_ARCH_USES_HIGH_VMA_FLAGS=y CONFIG_ARCH_HAS_PKEYS=y
# CONFIG_X86_PMEM_LEGACY is not set CONFIG_X86_CHECK_BIOS_CORRUPTION=y
# CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK is not set CONFIG_X86_RESERVE_LOW=64
CONFIG_MTRR=y
CONFIG_MTRR_SANITIZER=y CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=0 CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1 CONFIG_X86_PAT=y
CONFIG_ARCH_USES_PG_UNCACHED=y
# CONFIG_ARCH_RANDOM is not set
# CONFIG_X86_SMAP is not set CONFIG_X86_INTEL_MPX=y CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS=y
# CONFIG_EFI is not set
CONFIG_SECCOMP=y
CONFIG_HZ_100=y
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=100
CONFIG_SCHED_HRTICK=y
# CONFIG_KEXEC is not set
CONFIG_KEXEC_FILE=y
CONFIG_KEXEC_VERIFY_SIG=y
CONFIG_CRASH_DUMP=y CONFIG_PHYSICAL_START=0x1000000 CONFIG_RELOCATABLE=y
# CONFIG_RANDOMIZE_BASE is not set CONFIG_PHYSICAL_ALIGN=0x200000 CONFIG_HOTPLUG_CPU=y CONFIG_BOOTPARAM_HOTPLUG_CPU0=y
# CONFIG_DEBUG_HOTPLUG_CPU0 is not set
# CONFIG_COMPAT_VDSO is not set CONFIG_LEGACY_VSYSCALL_NATIVE=y
# CONFIG_LEGACY_VSYSCALL_EMULATE is not set
# CONFIG_LEGACY_VSYSCALL_NONE is not set
# CONFIG_CMDLINE_BOOL is not set
# CONFIG_MODIFY_LDT_SYSCALL is not set CONFIG_HAVE_LIVEPATCH=y CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y

#
# Power management and ACPI options
#
CONFIG_ARCH_HIBERNATION_HEADER=y
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
# CONFIG_SUSPEND_SKIP_SYNC is not set
CONFIG_HIBERNATE_CALLBACKS=y
CONFIG_HIBERNATION=y
CONFIG_PM_STD_PARTITION=""
CONFIG_PM_SLEEP=y
CONFIG_PM_SLEEP_SMP=y
# CONFIG_PM_AUTOSLEEP is not set
# CONFIG_PM_WAKELOCKS is not set
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
CONFIG_PM_OPP=y
CONFIG_PM_CLK=y
# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
CONFIG_ACPI=y
CONFIG_ACPI_LEGACY_TABLES_LOOKUP=y
CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=y
CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT=y
# CONFIG_ACPI_DEBUGGER is not set
CONFIG_ACPI_SLEEP=y
CONFIG_ACPI_PROCFS_POWER=y
# CONFIG_ACPI_REV_OVERRIDE_POSSIBLE is not set
CONFIG_ACPI_EC_DEBUGFS=y
CONFIG_ACPI_AC=y
# CONFIG_ACPI_BATTERY is not set
# CONFIG_ACPI_BUTTON is not set
CONFIG_ACPI_VIDEO=y
CONFIG_ACPI_FAN=y
CONFIG_ACPI_DOCK=y
CONFIG_ACPI_CPU_FREQ_PSS=y
CONFIG_ACPI_PROCESSOR_IDLE=y
CONFIG_ACPI_PROCESSOR=y
# CONFIG_ACPI_IPMI is not set
CONFIG_ACPI_HOTPLUG_CPU=y
# CONFIG_ACPI_PROCESSOR_AGGREGATOR is not set
# CONFIG_ACPI_THERMAL is not set
# CONFIG_ACPI_CUSTOM_DSDT is not set
CONFIG_ACPI_INITRD_TABLE_OVERRIDE=y
# CONFIG_ACPI_DEBUG is not set
# CONFIG_ACPI_PCI_SLOT is not set
CONFIG_X86_PM_TIMER=y
CONFIG_ACPI_CONTAINER=y
CONFIG_ACPI_HOTPLUG_IOAPIC=y
CONFIG_ACPI_SBS=y
# CONFIG_ACPI_HED is not set
# CONFIG_ACPI_CUSTOM_METHOD is not set
# CONFIG_ACPI_REDUCED_HARDWARE_ONLY is not set
# CONFIG_ACPI_NFIT is not set
CONFIG_HAVE_ACPI_APEI=y
CONFIG_HAVE_ACPI_APEI_NMI=y
# CONFIG_ACPI_APEI is not set
CONFIG_ACPI_EXTLOG=y
CONFIG_PMIC_OPREGION=y
# CONFIG_CRC_PMIC_OPREGION is not set
# CONFIG_SFI is not set

#
# CPU Frequency scaling
#
CONFIG_CPU_FREQ=y CONFIG_CPU_FREQ_GOV_COMMON=y
# CONFIG_CPU_FREQ_STAT is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE=y CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set CONFIG_CPU_FREQ_GOV_USERSPACE=y
# CONFIG_CPU_FREQ_GOV_ONDEMAND is not set CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y

#
# CPU frequency scaling drivers
#
CONFIG_CPUFREQ_DT=y
# CONFIG_X86_INTEL_PSTATE is not set
CONFIG_X86_PCC_CPUFREQ=y
CONFIG_X86_ACPI_CPUFREQ=y
# CONFIG_X86_ACPI_CPUFREQ_CPB is not set
# CONFIG_X86_POWERNOW_K8 is not set
CONFIG_X86_SPEEDSTEP_CENTRINO=y
CONFIG_X86_P4_CLOCKMOD=y

#

# shared options
#
CONFIG_X86_SPEEDSTEP_LIB=y

#
# CPU Idle
#
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y
# CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is not set
CONFIG_INTEL_IDLE=y

#
# Memory power savings
#
CONFIG_I7300_IDLE_IOAT_CHANNEL=y
CONFIG_I7300_IDLE=y

#
# Bus options (PCI etc.)
#
CONFIG_PCI=y
CONFIG_PCI_DIRECT=y
# CONFIG_PCI_MMCONFIG is not set
CONFIG_PCI_DOMAINS=y
CONFIG_PCI_CNB20LE_QUIRK=y
# CONFIG_PCIEPORTBUS is not set
CONFIG_PCI_BUS_ADDR_T_64BIT=y
# CONFIG_PCI_MSI is not set
CONFIG_PCI_DEBUG=y
# CONFIG_PCI_REALLOC_ENABLE_AUTO is not set
# CONFIG_PCI_STUB is not set
# CONFIG_HT_IRQ is not set
CONFIG_PCI_ATS=y
CONFIG_PCI_IOV=y
CONFIG_PCI_PRI=y
CONFIG_PCI_PASID=y
CONFIG_PCI_LABEL=y

#
# PCI host controller drivers
#
# CONFIG_ISA_DMA_API is not set
CONFIG_AMD_NB=y
CONFIG_PCCARD=y
CONFIG_PCMCIA=y
# CONFIG_PCMCIA_LOAD_CIS is not set
# CONFIG_CARDBUS is not set

#
# PC-card bridges
#
CONFIG_YENTA=y
# CONFIG_YENTA_O2 is not set
# CONFIG_YENTA_RICOH is not set
CONFIG_YENTA_TI=y
CONFIG_YENTA_TOSHIBA=y
CONFIG_PD6729=y
CONFIG_I82092=y
CONFIG_PCCARD_NONSTATIC=y
# CONFIG_HOTPLUG_PCI is not set
CONFIG_RAPIDIO=y
CONFIG_RAPIDIO_DISC_TIMEOUT=30
CONFIG_RAPIDIO_ENABLE_RX_TX_PORTS=y
CONFIG_RAPIDIO_DMA_ENGINE=y
CONFIG_RAPIDIO_DEBUG=y
CONFIG_RAPIDIO_ENUM_BASIC=y

#
# RapidIO Switch drivers
#
# CONFIG_RAPIDIO_TSI57X is not set
CONFIG_RAPIDIO_CPS_XX=y
# CONFIG_RAPIDIO_TSI568 is not set
CONFIG_RAPIDIO_CPS_GEN2=y
# CONFIG_X86_SYSFB is not set

#
# Executable file formats / Emulations
#
CONFIG_BINFMT_ELF=y
CONFIG_COMPAT_BINFMT_ELF=y
CONFIG_BINFMT_SCRIPT=y
# CONFIG_HAVE_AOUT is not set
# CONFIG_BINFMT_MISC is not set
# CONFIG_COREDUMP is not set
CONFIG_IA32_EMULATION=y
CONFIG_IA32_AOUT=y
# CONFIG_X86_X32 is not set
CONFIG_COMPAT=y
CONFIG_COMPAT_FOR_U64_ALIGNMENT=y
CONFIG_KEYS_COMPAT=y
CONFIG_X86_DEV_DMA_OPS=y
CONFIG_PMC_ATOM=y
CONFIG_NET=y
CONFIG_COMPAT_NETLINK_MESSAGES=y

#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_DIAG is not set
CONFIG_UNIX=y
# CONFIG_UNIX_DIAG is not set
CONFIG_XFRM=y
CONFIG_XFRM_ALGO=y
CONFIG_XFRM_USER=y
CONFIG_XFRM_SUB_POLICY=y
# CONFIG_XFRM_MIGRATE is not set
# CONFIG_XFRM_STATISTICS is not set
CONFIG_XFRM_IPCOMP=y
# CONFIG_NET_KEY is not set
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
# CONFIG_IP_FIB_TRIE_STATS is not set
CONFIG_IP_MULTIPLE_TABLES=y
# CONFIG_IP_ROUTE_MULTIPATH is not set
# CONFIG_IP_ROUTE_VERBOSE is not set
CONFIG_IP_PNP=y
# CONFIG_IP_PNP_DHCP is not set
CONFIG_IP_PNP_BOOTP=y
# CONFIG_IP_PNP_RARP is not set
CONFIG_NET_IPIP=y
# CONFIG_NET_IPGRE_DEMUX is not set
CONFIG_NET_IP_TUNNEL=y
CONFIG_IP_MROUTE=y
CONFIG_IP_MROUTE_MULTIPLE_TABLES=y
# CONFIG_IP_PIMSM_V1 is not set
# CONFIG_IP_PIMSM_V2 is not set
# CONFIG_SYN_COOKIES is not set
CONFIG_NET_IPVTI=y
CONFIG_NET_UDP_TUNNEL=y
CONFIG_NET_FOU=y
CONFIG_NET_FOU_IP_TUNNELS=y
CONFIG_INET_AH=y
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
# CONFIG_INET_XFRM_TUNNEL is not set
CONFIG_INET_TUNNEL=y
CONFIG_INET_XFRM_MODE_TRANSPORT=y
CONFIG_INET_XFRM_MODE_TUNNEL=y
CONFIG_INET_XFRM_MODE_BEET=y
CONFIG_INET_LRO=y
CONFIG_INET_DIAG=y
CONFIG_INET_TCP_DIAG=y
# CONFIG_INET_UDP_DIAG is not set
# CONFIG_INET_DIAG_DESTROY is not set
CONFIG_TCP_CONG_ADVANCED=y
# CONFIG_TCP_CONG_BIC is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_TCP_CONG_WESTWOOD=y
CONFIG_TCP_CONG_HTCP=y
CONFIG_TCP_CONG_HSTCP=y
CONFIG_TCP_CONG_HYBLA=y
CONFIG_TCP_CONG_VEGAS=y
CONFIG_TCP_CONG_SCALABLE=y
# CONFIG_TCP_CONG_LP is not set
CONFIG_TCP_CONG_VENO=y
CONFIG_TCP_CONG_YEAH=y
# CONFIG_TCP_CONG_ILLINOIS is not set
CONFIG_TCP_CONG_DCTCP=y
CONFIG_TCP_CONG_CDG=y
# CONFIG_DEFAULT_CUBIC is not set
# CONFIG_DEFAULT_HTCP is not set
CONFIG_DEFAULT_HYBLA=y
# CONFIG_DEFAULT_VEGAS is not set
# CONFIG_DEFAULT_VENO is not set
# CONFIG_DEFAULT_WESTWOOD is not set
# CONFIG_DEFAULT_DCTCP is not set
# CONFIG_DEFAULT_CDG is not set
# CONFIG_DEFAULT_RENO is not set
CONFIG_DEFAULT_TCP_CONG="hybla"
# CONFIG_TCP_MD5SIG is not set
CONFIG_IPV6=y
# CONFIG_IPV6_ROUTER_PREF is not set
# CONFIG_IPV6_OPTIMISTIC_DAD is not set
CONFIG_INET6_AH=y
CONFIG_INET6_ESP=y
CONFIG_INET6_IPCOMP=y
CONFIG_IPV6_MIP6=y
CONFIG_INET6_XFRM_TUNNEL=y
CONFIG_INET6_TUNNEL=y
CONFIG_INET6_XFRM_MODE_TRANSPORT=y
# CONFIG_INET6_XFRM_MODE_TUNNEL is not set
CONFIG_INET6_XFRM_MODE_BEET=y
CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION=y
CONFIG_IPV6_SIT=y
# CONFIG_IPV6_SIT_6RD is not set
CONFIG_IPV6_NDISC_NODETYPE=y
CONFIG_IPV6_TUNNEL=y
# CONFIG_IPV6_GRE is not set
CONFIG_IPV6_MULTIPLE_TABLES=y
# CONFIG_IPV6_SUBTREES is not set
CONFIG_IPV6_MROUTE=y
CONFIG_IPV6_MROUTE_MULTIPLE_TABLES=y
CONFIG_IPV6_PIMSM_V2=y
CONFIG_NETLABEL=y
CONFIG_NETWORK_SECMARK=y
CONFIG_NET_PTP_CLASSIFY=y
# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
# CONFIG_NETFILTER is not set
# CONFIG_IP_DCCP is not set
CONFIG_IP_SCTP=y
CONFIG_SCTP_DBG_OBJCNT=y
# CONFIG_SCTP_DEFAULT_COOKIE_HMAC_MD5 is not set
# CONFIG_SCTP_DEFAULT_COOKIE_HMAC_SHA1 is not set
CONFIG_SCTP_DEFAULT_COOKIE_HMAC_NONE=y
CONFIG_SCTP_COOKIE_HMAC_MD5=y
# CONFIG_SCTP_COOKIE_HMAC_SHA1 is not set
CONFIG_RDS=y
CONFIG_RDS_RDMA=y
# CONFIG_RDS_TCP is not set
CONFIG_RDS_DEBUG=y
CONFIG_TIPC=y
# CONFIG_TIPC_MEDIA_UDP is not set
CONFIG_ATM=y
# CONFIG_ATM_CLIP is not set
CONFIG_ATM_LANE=y
CONFIG_ATM_MPOA=y
CONFIG_ATM_BR2684=y
CONFIG_ATM_BR2684_IPFILTER=y
CONFIG_L2TP=y
CONFIG_L2TP_DEBUGFS=y
CONFIG_L2TP_V3=y
# CONFIG_L2TP_IP is not set
CONFIG_L2TP_ETH=y
CONFIG_STP=y
CONFIG_GARP=y
CONFIG_MRP=y
CONFIG_BRIDGE=y
# CONFIG_BRIDGE_IGMP_SNOOPING is not set
CONFIG_BRIDGE_VLAN_FILTERING=y
CONFIG_HAVE_NET_DSA=y
CONFIG_VLAN_8021Q=y
CONFIG_VLAN_8021Q_GVRP=y
CONFIG_VLAN_8021Q_MVRP=y
# CONFIG_DECNET is not set
CONFIG_LLC=y
# CONFIG_LLC2 is not set
CONFIG_IPX=y
CONFIG_IPX_INTERN=y
# CONFIG_ATALK is not set
CONFIG_X25=y
# CONFIG_LAPB is not set
CONFIG_PHONET=y
CONFIG_6LOWPAN=y
# CONFIG_6LOWPAN_DEBUGFS is not set
# CONFIG_6LOWPAN_NHC is not set
CONFIG_IEEE802154=y
CONFIG_IEEE802154_NL802154_EXPERIMENTAL=y
CONFIG_IEEE802154_SOCKET=y
CONFIG_IEEE802154_6LOWPAN=y
# CONFIG_MAC802154 is not set
# CONFIG_NET_SCHED is not set
CONFIG_DCB=y
CONFIG_DNS_RESOLVER=y
CONFIG_BATMAN_ADV=y
# CONFIG_BATMAN_ADV_BLA is not set
# CONFIG_BATMAN_ADV_DAT is not set
# CONFIG_BATMAN_ADV_NC is not set
CONFIG_BATMAN_ADV_MCAST=y
CONFIG_BATMAN_ADV_DEBUG=y
CONFIG_OPENVSWITCH=y
CONFIG_OPENVSWITCH_VXLAN=y
CONFIG_OPENVSWITCH_GENEVE=y
# CONFIG_VSOCKETS is not set
CONFIG_NETLINK_MMAP=y
CONFIG_NETLINK_DIAG=y
CONFIG_MPLS=y
CONFIG_NET_MPLS_GSO=y
CONFIG_MPLS_ROUTING=y
CONFIG_MPLS_IPTUNNEL=y
# CONFIG_HSR is not set
# CONFIG_NET_SWITCHDEV is not set
# CONFIG_NET_L3_MASTER_DEV is not set
CONFIG_RPS=y
CONFIG_RFS_ACCEL=y
CONFIG_XPS=y
CONFIG_SOCK_CGROUP_DATA=y
CONFIG_CGROUP_NET_PRIO=y
# CONFIG_CGROUP_NET_CLASSID is not set
CONFIG_NET_RX_BUSY_POLL=y
CONFIG_BQL=y
CONFIG_NET_FLOW_LIMIT=y

#
# Network testing
#
CONFIG_NET_PKTGEN=y
# CONFIG_NET_DROP_MONITOR is not set
CONFIG_HAMRADIO=y

#
# Packet Radio protocols
#
CONFIG_AX25=y
CONFIG_AX25_DAMA_SLAVE=y
# CONFIG_NETROM is not set
# CONFIG_ROSE is not set

#
# AX.25 network device drivers
#
CONFIG_MKISS=y
# CONFIG_6PACK is not set
# CONFIG_BPQETHER is not set
CONFIG_BAYCOM_SER_FDX=y
# CONFIG_BAYCOM_SER_HDX is not set
CONFIG_YAM=y
CONFIG_CAN=y
# CONFIG_CAN_RAW is not set
CONFIG_CAN_BCM=y
CONFIG_CAN_GW=y

#
# CAN Device Drivers
#
# CONFIG_CAN_VCAN is not set
CONFIG_CAN_SLCAN=y
CONFIG_CAN_DEV=y
# CONFIG_CAN_CALC_BITTIMING is not set
CONFIG_CAN_LEDS=y
# CONFIG_CAN_JANZ_ICAN3 is not set
CONFIG_CAN_GRCAN=y
CONFIG_CAN_SJA1000=y
# CONFIG_CAN_SJA1000_ISA is not set
CONFIG_CAN_SJA1000_PLATFORM=y
CONFIG_CAN_EMS_PCMCIA=y
CONFIG_CAN_EMS_PCI=y
# CONFIG_CAN_PEAK_PCMCIA is not set
CONFIG_CAN_PEAK_PCI=y
CONFIG_CAN_PEAK_PCIEC=y
CONFIG_CAN_KVASER_PCI=y
CONFIG_CAN_PLX_PCI=y
CONFIG_CAN_C_CAN=y
CONFIG_CAN_C_CAN_PLATFORM=y
CONFIG_CAN_C_CAN_PCI=y
CONFIG_CAN_M_CAN=y
# CONFIG_CAN_CC770 is not set

#
# CAN SPI interfaces
#
# CONFIG_CAN_MCP251X is not set

#
# CAN USB interfaces
#
CONFIG_CAN_EMS_USB=y
CONFIG_CAN_ESD_USB2=y
CONFIG_CAN_GS_USB=y
# CONFIG_CAN_KVASER_USB is not set
CONFIG_CAN_PEAK_USB=y
# CONFIG_CAN_8DEV_USB is not set
CONFIG_CAN_SOFTING=y
CONFIG_CAN_SOFTING_CS=y
CONFIG_CAN_DEBUG_DEVICES=y
# CONFIG_IRDA is not set
CONFIG_BT=y
# CONFIG_BT_BREDR is not set
CONFIG_BT_LE=y
CONFIG_BT_6LOWPAN=y
CONFIG_BT_SELFTEST=y
CONFIG_BT_SELFTEST_ECDH=y
CONFIG_BT_SELFTEST_SMP=y
# CONFIG_BT_DEBUGFS is not set

#
# Bluetooth device drivers
#
CONFIG_BT_INTEL=y
CONFIG_BT_BCM=y
CONFIG_BT_RTL=y
CONFIG_BT_QCA=y
CONFIG_BT_HCIBTUSB=y
CONFIG_BT_HCIBTUSB_BCM=y
CONFIG_BT_HCIBTUSB_RTL=y
CONFIG_BT_HCIBTSDIO=y
CONFIG_BT_HCIUART=y
CONFIG_BT_HCIUART_H4=y
# CONFIG_BT_HCIUART_BCSP is not set
CONFIG_BT_HCIUART_ATH3K=y
CONFIG_BT_HCIUART_LL=y
# CONFIG_BT_HCIUART_3WIRE is not set
CONFIG_BT_HCIUART_INTEL=y
# CONFIG_BT_HCIUART_BCM is not set
CONFIG_BT_HCIUART_QCA=y
CONFIG_BT_HCIBCM203X=y
CONFIG_BT_HCIBPA10X=y
CONFIG_BT_HCIBFUSB=y
CONFIG_BT_HCIDTL1=y
CONFIG_BT_HCIBT3C=y
CONFIG_BT_HCIBLUECARD=y
# CONFIG_BT_HCIBTUART is not set
CONFIG_BT_HCIVHCI=y
CONFIG_BT_MRVL=y
CONFIG_BT_MRVL_SDIO=y
CONFIG_BT_ATH3K=y
CONFIG_BT_WILINK=y
CONFIG_AF_RXRPC=y
CONFIG_AF_RXRPC_DEBUG=y
CONFIG_RXKAD=y
CONFIG_FIB_RULES=y
CONFIG_WIRELESS=y
CONFIG_WEXT_CORE=y
CONFIG_WEXT_PROC=y
CONFIG_CFG80211=y
CONFIG_NL80211_TESTMODE=y
# CONFIG_CFG80211_DEVELOPER_WARNINGS is not set
CONFIG_CFG80211_REG_DEBUG=y
CONFIG_CFG80211_CERTIFICATION_ONUS=y
CONFIG_CFG80211_REG_CELLULAR_HINTS=y
CONFIG_CFG80211_REG_RELAX_NO_IR=y
CONFIG_CFG80211_DEFAULT_PS=y
# CONFIG_CFG80211_DEBUGFS is not set
CONFIG_CFG80211_INTERNAL_REGDB=y
CONFIG_CFG80211_CRDA_SUPPORT=y
CONFIG_CFG80211_WEXT=y
# CONFIG_LIB80211 is not set
# CONFIG_MAC80211 is not set
CONFIG_MAC80211_STA_HASH_MAX_SIZE=0
# CONFIG_WIMAX is not set
CONFIG_RFKILL=y
CONFIG_RFKILL_LEDS=y
# CONFIG_RFKILL_INPUT is not set
CONFIG_RFKILL_REGULATOR=y
CONFIG_RFKILL_GPIO=y
CONFIG_NET_9P=y
CONFIG_NET_9P_VIRTIO=y
CONFIG_NET_9P_RDMA=y
CONFIG_NET_9P_DEBUG=y
# CONFIG_CAIF is not set
CONFIG_CEPH_LIB=y
# CONFIG_CEPH_LIB_PRETTYDEBUG is not set
# CONFIG_CEPH_LIB_USE_DNS_RESOLVER is not set
# CONFIG_NFC is not set
CONFIG_LWTUNNEL=y
CONFIG_HAVE_BPF_JIT=y

#
# Device Drivers
#

#
# Generic Driver Options
#
# CONFIG_UEVENT_HELPER is not set CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y CONFIG_STANDALONE=y CONFIG_PREVENT_FIRMWARE_BUILD=y CONFIG_FW_LOADER=y
# CONFIG_FIRMWARE_IN_KERNEL is not set CONFIG_EXTRA_FIRMWARE="" CONFIG_FW_LOADER_USER_HELPER=y
# CONFIG_FW_LOADER_USER_HELPER_FALLBACK is not set CONFIG_WANT_DEV_COREDUMP=y
# CONFIG_ALLOW_DEV_COREDUMP is not set CONFIG_DEBUG_DRIVER=y CONFIG_DEBUG_DEVRES=y
# CONFIG_SYS_HYPERVISOR is not set
# CONFIG_GENERIC_CPU_DEVICES is not set CONFIG_GENERIC_CPU_AUTOPROBE=y CONFIG_REGMAP=y
CONFIG_REGMAP_I2C=y
CONFIG_REGMAP_SPI=y
CONFIG_REGMAP_MMIO=y
CONFIG_REGMAP_IRQ=y CONFIG_DMA_SHARED_BUFFER=y CONFIG_FENCE_TRACE=y
# CONFIG_DMA_CMA is not set

#
# Bus devices
#
# CONFIG_CONNECTOR is not set
# CONFIG_MTD is not set
CONFIG_DTC=y
CONFIG_OF=y
CONFIG_OF_UNITTEST=y
CONFIG_OF_FLATTREE=y
CONFIG_OF_EARLY_FLATTREE=y
CONFIG_OF_DYNAMIC=y
CONFIG_OF_ADDRESS=y
CONFIG_OF_ADDRESS_PCI=y
CONFIG_OF_IRQ=y
CONFIG_OF_NET=y
CONFIG_OF_MDIO=y
CONFIG_OF_PCI=y
CONFIG_OF_PCI_IRQ=y
CONFIG_OF_RESOLVE=y
CONFIG_OF_OVERLAY=y
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
# CONFIG_PARPORT is not set
CONFIG_PNP=y
# CONFIG_PNP_DEBUG_MESSAGES is not set

#
# Protocols
#
CONFIG_PNPACPI=y
CONFIG_BLK_DEV=y
CONFIG_BLK_DEV_NULL_BLK=y
# CONFIG_BLK_DEV_PCIESSD_MTIP32XX is not set
CONFIG_ZRAM=y
# CONFIG_ZRAM_LZ4_COMPRESS is not set
CONFIG_BLK_CPQ_CISS_DA=y
CONFIG_CISS_SCSI_TAPE=y
CONFIG_BLK_DEV_DAC960=y
# CONFIG_BLK_DEV_UMEM is not set
# CONFIG_BLK_DEV_COW_COMMON is not set
# CONFIG_BLK_DEV_LOOP is not set
# CONFIG_BLK_DEV_DRBD is not set
CONFIG_BLK_DEV_NBD=y
CONFIG_BLK_DEV_SKD=y
CONFIG_BLK_DEV_OSD=y
# CONFIG_BLK_DEV_SX8 is not set
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=4096
CONFIG_BLK_DEV_RAM_DAX=y
CONFIG_CDROM_PKTCDVD=y
CONFIG_CDROM_PKTCDVD_BUFFERS=8
# CONFIG_CDROM_PKTCDVD_WCACHE is not set
# CONFIG_ATA_OVER_ETH is not set
CONFIG_VIRTIO_BLK=y
# CONFIG_BLK_DEV_HD is not set
# CONFIG_BLK_DEV_RBD is not set
CONFIG_BLK_DEV_RSXX=y
# CONFIG_BLK_DEV_NVME is not set

#
# Misc devices
#
CONFIG_SENSORS_LIS3LV02D=y
CONFIG_AD525X_DPOT=y
CONFIG_AD525X_DPOT_I2C=y
CONFIG_AD525X_DPOT_SPI=y
CONFIG_DUMMY_IRQ=y
CONFIG_IBM_ASM=y
CONFIG_PHANTOM=y
CONFIG_SGI_IOC4=y
CONFIG_TIFM_CORE=y
# CONFIG_TIFM_7XX1 is not set
CONFIG_ICS932S401=y
CONFIG_ENCLOSURE_SERVICES=y
CONFIG_HP_ILO=y
CONFIG_APDS9802ALS=y
CONFIG_ISL29003=y
CONFIG_ISL29020=y
# CONFIG_SENSORS_TSL2550 is not set
CONFIG_SENSORS_BH1780=y
CONFIG_SENSORS_BH1770=y
CONFIG_SENSORS_APDS990X=y
# CONFIG_HMC6352 is not set
# CONFIG_DS1682 is not set
CONFIG_TI_DAC7512=y
CONFIG_VMWARE_BALLOON=y
# CONFIG_BMP085_I2C is not set
# CONFIG_BMP085_SPI is not set
CONFIG_USB_SWITCH_FSA9480=y
CONFIG_LATTICE_ECP3_CONFIG=y
# CONFIG_SRAM is not set
CONFIG_C2PORT=y
CONFIG_C2PORT_DURAMAR_2150=y

#
# EEPROM support
#
CONFIG_EEPROM_AT24=y
# CONFIG_EEPROM_AT25 is not set
CONFIG_EEPROM_LEGACY=y
CONFIG_EEPROM_MAX6875=y
CONFIG_EEPROM_93CX6=y
CONFIG_EEPROM_93XX46=y
CONFIG_CB710_CORE=y
CONFIG_CB710_DEBUG=y
CONFIG_CB710_DEBUG_ASSUMPTIONS=y

#
# Texas Instruments shared transport line discipline #
CONFIG_TI_ST=y
CONFIG_SENSORS_LIS3_I2C=y

#
# Altera FPGA firmware download module
#
CONFIG_ALTERA_STAPL=y
CONFIG_VMWARE_VMCI=y

#
# Intel MIC Bus Driver
#
# CONFIG_INTEL_MIC_BUS is not set

#
# SCIF Bus Driver
#
# CONFIG_SCIF_BUS is not set

#
# Intel MIC Host Driver
#

#
# Intel MIC Card Driver
#

#
# SCIF Driver
#

#
# Intel MIC Coprocessor State Management (COSM) Drivers #
# CONFIG_GENWQE is not set
CONFIG_ECHO=y
# CONFIG_CXL_BASE is not set
# CONFIG_CXL_KERNEL_API is not set
# CONFIG_CXL_EEH is not set
CONFIG_HAVE_IDE=y
# CONFIG_IDE is not set

#
# SCSI device support
#
CONFIG_SCSI_MOD=y
CONFIG_RAID_ATTRS=y
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
CONFIG_SCSI_NETLINK=y
CONFIG_SCSI_MQ_DEFAULT=y
# CONFIG_SCSI_PROC_FS is not set

#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=y
# CONFIG_CHR_DEV_ST is not set
CONFIG_CHR_DEV_OSST=y
CONFIG_BLK_DEV_SR=y
# CONFIG_BLK_DEV_SR_VENDOR is not set
CONFIG_CHR_DEV_SG=y
CONFIG_CHR_DEV_SCH=y
CONFIG_SCSI_ENCLOSURE=y
# CONFIG_SCSI_CONSTANTS is not set
# CONFIG_SCSI_LOGGING is not set
# CONFIG_SCSI_SCAN_ASYNC is not set

#
# SCSI Transports
#
CONFIG_SCSI_SPI_ATTRS=y
CONFIG_SCSI_FC_ATTRS=y
CONFIG_SCSI_ISCSI_ATTRS=y
CONFIG_SCSI_SAS_ATTRS=y
CONFIG_SCSI_SAS_LIBSAS=y
CONFIG_SCSI_SAS_ATA=y
# CONFIG_SCSI_SAS_HOST_SMP is not set
# CONFIG_SCSI_SRP_ATTRS is not set
CONFIG_SCSI_LOWLEVEL=y
CONFIG_ISCSI_TCP=y
CONFIG_ISCSI_BOOT_SYSFS=y
CONFIG_SCSI_CXGB3_ISCSI=y
CONFIG_SCSI_CXGB4_ISCSI=y
CONFIG_SCSI_BNX2_ISCSI=y
CONFIG_SCSI_BNX2X_FCOE=y
# CONFIG_BE2ISCSI is not set
CONFIG_BLK_DEV_3W_XXXX_RAID=y
# CONFIG_SCSI_HPSA is not set
CONFIG_SCSI_3W_9XXX=y
CONFIG_SCSI_3W_SAS=y
# CONFIG_SCSI_ACARD is not set
# CONFIG_SCSI_AACRAID is not set
CONFIG_SCSI_AIC7XXX=y
CONFIG_AIC7XXX_CMDS_PER_DEVICE=32
CONFIG_AIC7XXX_RESET_DELAY_MS=5000
CONFIG_AIC7XXX_DEBUG_ENABLE=y
CONFIG_AIC7XXX_DEBUG_MASK=0
# CONFIG_AIC7XXX_REG_PRETTY_PRINT is not set
CONFIG_SCSI_AIC79XX=y
CONFIG_AIC79XX_CMDS_PER_DEVICE=32
CONFIG_AIC79XX_RESET_DELAY_MS=5000
CONFIG_AIC79XX_DEBUG_ENABLE=y
CONFIG_AIC79XX_DEBUG_MASK=0
CONFIG_AIC79XX_REG_PRETTY_PRINT=y
# CONFIG_SCSI_AIC94XX is not set
# CONFIG_SCSI_MVSAS is not set
# CONFIG_SCSI_MVUMI is not set
CONFIG_SCSI_DPT_I2O=y
CONFIG_SCSI_ADVANSYS=y
CONFIG_SCSI_ARCMSR=y
CONFIG_SCSI_ESAS2R=y
# CONFIG_MEGARAID_NEWGEN is not set
CONFIG_MEGARAID_LEGACY=y
# CONFIG_MEGARAID_SAS is not set
CONFIG_SCSI_MPT3SAS=y
CONFIG_SCSI_MPT2SAS_MAX_SGE=128
CONFIG_SCSI_MPT3SAS_MAX_SGE=128
CONFIG_SCSI_MPT2SAS=y
CONFIG_SCSI_UFSHCD=y
CONFIG_SCSI_UFSHCD_PCI=y
CONFIG_SCSI_UFSHCD_PLATFORM=y
# CONFIG_SCSI_HPTIOP is not set
CONFIG_VMWARE_PVSCSI=y
# CONFIG_HYPERV_STORAGE is not set
CONFIG_LIBFC=y
CONFIG_LIBFCOE=y
# CONFIG_FCOE is not set
CONFIG_FCOE_FNIC=y
# CONFIG_SCSI_SNIC is not set
# CONFIG_SCSI_DMX3191D is not set
CONFIG_SCSI_FUTURE_DOMAIN=y
CONFIG_SCSI_ISCI=y
CONFIG_SCSI_IPS=y
# CONFIG_SCSI_INITIO is not set
CONFIG_SCSI_INIA100=y
CONFIG_SCSI_STEX=y
CONFIG_SCSI_SYM53C8XX_2=y
CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=1
CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS=16
CONFIG_SCSI_SYM53C8XX_MAX_TAGS=64
# CONFIG_SCSI_SYM53C8XX_MMIO is not set
# CONFIG_SCSI_IPR is not set
# CONFIG_SCSI_QLOGIC_1280 is not set
CONFIG_SCSI_QLA_FC=y
CONFIG_TCM_QLA2XXX=y
# CONFIG_SCSI_QLA_ISCSI is not set
CONFIG_SCSI_LPFC=y
CONFIG_SCSI_LPFC_DEBUG_FS=y
CONFIG_SCSI_DC395x=y
CONFIG_SCSI_AM53C974=y
# CONFIG_SCSI_WD719X is not set
CONFIG_SCSI_DEBUG=y
CONFIG_SCSI_PMCRAID=y
CONFIG_SCSI_PM8001=y
CONFIG_SCSI_BFA_FC=y
# CONFIG_SCSI_VIRTIO is not set
CONFIG_SCSI_CHELSIO_FCOE=y
CONFIG_SCSI_LOWLEVEL_PCMCIA=y
# CONFIG_SCSI_DH is not set
CONFIG_SCSI_OSD_INITIATOR=y
CONFIG_SCSI_OSD_ULD=y
CONFIG_SCSI_OSD_DPRINT_SENSE=1
CONFIG_SCSI_OSD_DEBUG=y
CONFIG_ATA=y
# CONFIG_ATA_NONSTANDARD is not set
CONFIG_ATA_VERBOSE_ERROR=y
CONFIG_ATA_ACPI=y
CONFIG_SATA_ZPODD=y
# CONFIG_SATA_PMP is not set

#
# Controllers with non-SFF native interface
#
CONFIG_SATA_AHCI=y
# CONFIG_SATA_AHCI_PLATFORM is not set
CONFIG_AHCI_CEVA=y
CONFIG_AHCI_QORIQ=y
CONFIG_SATA_INIC162X=y
# CONFIG_SATA_ACARD_AHCI is not set
# CONFIG_SATA_SIL24 is not set
CONFIG_ATA_SFF=y

#
# SFF controllers with custom DMA interface
#
CONFIG_PDC_ADMA=y
CONFIG_SATA_QSTOR=y
# CONFIG_SATA_SX4 is not set
CONFIG_ATA_BMDMA=y

#
# SATA SFF controllers with BMDMA
#
CONFIG_ATA_PIIX=y
# CONFIG_SATA_MV is not set
CONFIG_SATA_NV=y
CONFIG_SATA_PROMISE=y
CONFIG_SATA_SIL=y
CONFIG_SATA_SIS=y
CONFIG_SATA_SVW=y
CONFIG_SATA_ULI=y
# CONFIG_SATA_VIA is not set
# CONFIG_SATA_VITESSE is not set

#
# PATA SFF controllers with BMDMA
#
# CONFIG_PATA_ALI is not set
CONFIG_PATA_AMD=y
CONFIG_PATA_ARTOP=y
# CONFIG_PATA_ATIIXP is not set
CONFIG_PATA_ATP867X=y
CONFIG_PATA_CMD64X=y
CONFIG_PATA_CYPRESS=y
CONFIG_PATA_EFAR=y
# CONFIG_PATA_HPT366 is not set
CONFIG_PATA_HPT37X=y
# CONFIG_PATA_HPT3X2N is not set
CONFIG_PATA_HPT3X3=y
CONFIG_PATA_HPT3X3_DMA=y
# CONFIG_PATA_IT8213 is not set
# CONFIG_PATA_IT821X is not set
CONFIG_PATA_JMICRON=y
CONFIG_PATA_MARVELL=y
# CONFIG_PATA_NETCELL is not set
CONFIG_PATA_NINJA32=y
CONFIG_PATA_NS87415=y
CONFIG_PATA_OLDPIIX=y
CONFIG_PATA_OPTIDMA=y
CONFIG_PATA_PDC2027X=y
CONFIG_PATA_PDC_OLD=y
CONFIG_PATA_RADISYS=y
CONFIG_PATA_RDC=y
CONFIG_PATA_SCH=y
CONFIG_PATA_SERVERWORKS=y
CONFIG_PATA_SIL680=y
CONFIG_PATA_SIS=y
# CONFIG_PATA_TOSHIBA is not set
# CONFIG_PATA_TRIFLEX is not set
# CONFIG_PATA_VIA is not set
# CONFIG_PATA_WINBOND is not set

#
# PIO-only SFF controllers
#
CONFIG_PATA_CMD640_PCI=y
CONFIG_PATA_MPIIX=y
# CONFIG_PATA_NS87410 is not set
CONFIG_PATA_OPTI=y
CONFIG_PATA_PCMCIA=y
CONFIG_PATA_PLATFORM=y
# CONFIG_PATA_OF_PLATFORM is not set
CONFIG_PATA_RZ1000=y

#
# Generic fallback / legacy drivers
#
CONFIG_PATA_ACPI=y
CONFIG_ATA_GENERIC=y
CONFIG_PATA_LEGACY=y
# CONFIG_MD is not set
CONFIG_TARGET_CORE=y
# CONFIG_TCM_IBLOCK is not set
CONFIG_TCM_FILEIO=y
# CONFIG_TCM_PSCSI is not set
# CONFIG_TCM_USER2 is not set
CONFIG_LOOPBACK_TARGET=y
CONFIG_TCM_FC=y
# CONFIG_ISCSI_TARGET is not set
CONFIG_FUSION=y
CONFIG_FUSION_SPI=y
CONFIG_FUSION_FC=y
CONFIG_FUSION_SAS=y
CONFIG_FUSION_MAX_SGE=128
CONFIG_FUSION_CTL=y
CONFIG_FUSION_LOGGING=y

#
# IEEE 1394 (FireWire) support
#
# CONFIG_FIREWIRE is not set
# CONFIG_FIREWIRE_NOSY is not set
CONFIG_MACINTOSH_DRIVERS=y
CONFIG_MAC_EMUMOUSEBTN=y
CONFIG_NETDEVICES=y
CONFIG_MII=y
CONFIG_NET_CORE=y
CONFIG_BONDING=y
# CONFIG_DUMMY is not set
CONFIG_EQUALIZER=y
# CONFIG_NET_FC is not set
# CONFIG_NET_TEAM is not set
# CONFIG_MACVLAN is not set
CONFIG_IPVLAN=y
CONFIG_VXLAN=y
CONFIG_GENEVE=y
CONFIG_NETCONSOLE=y
CONFIG_NETCONSOLE_DYNAMIC=y
CONFIG_NETPOLL=y
CONFIG_NET_POLL_CONTROLLER=y
CONFIG_RIONET=y
CONFIG_RIONET_TX_SIZE=128
CONFIG_RIONET_RX_SIZE=128
CONFIG_TUN=y
# CONFIG_TUN_VNET_CROSS_LE is not set
CONFIG_VETH=y
CONFIG_VIRTIO_NET=y
# CONFIG_NLMON is not set
CONFIG_ARCNET=y
CONFIG_ARCNET_1201=y
# CONFIG_ARCNET_1051 is not set
CONFIG_ARCNET_RAW=y
CONFIG_ARCNET_CAP=y
CONFIG_ARCNET_COM90xx=y
CONFIG_ARCNET_COM90xxIO=y
# CONFIG_ARCNET_RIM_I is not set
# CONFIG_ARCNET_COM20020 is not set
CONFIG_ATM_DRIVERS=y
CONFIG_ATM_DUMMY=y
CONFIG_ATM_TCP=y
CONFIG_ATM_LANAI=y
CONFIG_ATM_ENI=y
CONFIG_ATM_ENI_DEBUG=y
CONFIG_ATM_ENI_TUNE_BURST=y
CONFIG_ATM_ENI_BURST_TX_16W=y
CONFIG_ATM_ENI_BURST_TX_8W=y
# CONFIG_ATM_ENI_BURST_TX_4W is not set
# CONFIG_ATM_ENI_BURST_TX_2W is not set
CONFIG_ATM_ENI_BURST_RX_16W=y
CONFIG_ATM_ENI_BURST_RX_8W=y
# CONFIG_ATM_ENI_BURST_RX_4W is not set
CONFIG_ATM_ENI_BURST_RX_2W=y
CONFIG_ATM_FIRESTREAM=y
CONFIG_ATM_ZATM=y
CONFIG_ATM_ZATM_DEBUG=y
CONFIG_ATM_NICSTAR=y
CONFIG_ATM_NICSTAR_USE_SUNI=y
# CONFIG_ATM_NICSTAR_USE_IDT77105 is not set
# CONFIG_ATM_IDT77252 is not set
CONFIG_ATM_AMBASSADOR=y
# CONFIG_ATM_AMBASSADOR_DEBUG is not set
CONFIG_ATM_HORIZON=y
# CONFIG_ATM_HORIZON_DEBUG is not set
CONFIG_ATM_IA=y
CONFIG_ATM_IA_DEBUG=y
CONFIG_ATM_FORE200E=y
CONFIG_ATM_FORE200E_USE_TASKLET=y
CONFIG_ATM_FORE200E_TX_RETRY=16
CONFIG_ATM_FORE200E_DEBUG=0
# CONFIG_ATM_HE is not set
# CONFIG_ATM_SOLOS is not set

#
# CAIF transport drivers
#
CONFIG_VHOST_NET=y
CONFIG_VHOST_RING=y
CONFIG_VHOST=y
CONFIG_VHOST_CROSS_ENDIAN_LEGACY=y

#
# Distributed Switch Architecture drivers
#
# CONFIG_NET_DSA_MV88E6XXX is not set
# CONFIG_NET_DSA_MV88E6XXX_NEED_PPU is not set
CONFIG_ETHERNET=y
CONFIG_MDIO=y
# CONFIG_NET_VENDOR_3COM is not set
CONFIG_NET_VENDOR_ADAPTEC=y
CONFIG_ADAPTEC_STARFIRE=y
# CONFIG_NET_VENDOR_AGERE is not set
CONFIG_NET_VENDOR_ALTEON=y
CONFIG_ACENIC=y
# CONFIG_ACENIC_OMIT_TIGON_I is not set
# CONFIG_ALTERA_TSE is not set
CONFIG_NET_VENDOR_AMD=y
# CONFIG_AMD8111_ETH is not set
# CONFIG_PCNET32 is not set
# CONFIG_PCMCIA_NMCLAN is not set
CONFIG_NET_VENDOR_ARC=y
CONFIG_ARC_EMAC_CORE=y
CONFIG_ARC_EMAC=y
CONFIG_EMAC_ROCKCHIP=y
# CONFIG_NET_VENDOR_ATHEROS is not set
# CONFIG_NET_VENDOR_AURORA is not set
CONFIG_NET_CADENCE=y
CONFIG_MACB=y
CONFIG_NET_VENDOR_BROADCOM=y
CONFIG_B44=y
CONFIG_B44_PCI_AUTOSELECT=y
CONFIG_B44_PCICORE_AUTOSELECT=y
CONFIG_B44_PCI=y
CONFIG_BCMGENET=y
CONFIG_BNX2=y
CONFIG_CNIC=y
CONFIG_TIGON3=y
# CONFIG_BNX2X is not set
# CONFIG_SYSTEMPORT is not set
# CONFIG_BNXT is not set
CONFIG_NET_VENDOR_BROCADE=y
# CONFIG_BNA is not set
CONFIG_NET_VENDOR_CAVIUM=y
CONFIG_THUNDER_NIC_PF=y
CONFIG_THUNDER_NIC_VF=y
CONFIG_THUNDER_NIC_BGX=y
CONFIG_LIQUIDIO=y
CONFIG_NET_VENDOR_CHELSIO=y
# CONFIG_CHELSIO_T1 is not set
CONFIG_CHELSIO_T3=y
CONFIG_CHELSIO_T4=y
CONFIG_CHELSIO_T4_DCB=y
CONFIG_CHELSIO_T4VF=y
CONFIG_NET_VENDOR_CISCO=y
# CONFIG_ENIC is not set
# CONFIG_CX_ECAT is not set
# CONFIG_DNET is not set
CONFIG_NET_VENDOR_DEC=y
# CONFIG_NET_TULIP is not set
CONFIG_NET_VENDOR_DLINK=y
CONFIG_DL2K=y
CONFIG_SUNDANCE=y
CONFIG_SUNDANCE_MMIO=y
CONFIG_NET_VENDOR_EMULEX=y
CONFIG_BE2NET=y
CONFIG_BE2NET_HWMON=y
CONFIG_BE2NET_VXLAN=y
# CONFIG_NET_VENDOR_EZCHIP is not set
CONFIG_NET_VENDOR_EXAR=y
CONFIG_S2IO=y
# CONFIG_VXGE is not set
# CONFIG_NET_VENDOR_FUJITSU is not set
# CONFIG_NET_VENDOR_HP is not set
CONFIG_NET_VENDOR_INTEL=y
CONFIG_E100=y
CONFIG_E1000=y
CONFIG_E1000E=y
# CONFIG_E1000E_HWTS is not set
CONFIG_IGB=y
CONFIG_IGB_HWMON=y
CONFIG_IGB_DCA=y
# CONFIG_IGBVF is not set
CONFIG_IXGB=y
# CONFIG_IXGBE is not set
CONFIG_I40E=y
CONFIG_I40E_VXLAN=y
CONFIG_I40E_GENEVE=y
# CONFIG_I40E_DCB is not set
CONFIG_NET_VENDOR_I825XX=y
CONFIG_JME=y
CONFIG_NET_VENDOR_MARVELL=y
CONFIG_MVMDIO=y
CONFIG_SKGE=y
# CONFIG_SKGE_DEBUG is not set
CONFIG_SKGE_GENESIS=y
CONFIG_SKY2=y
# CONFIG_SKY2_DEBUG is not set
CONFIG_NET_VENDOR_MELLANOX=y
# CONFIG_MLX4_EN is not set
CONFIG_MLX4_CORE=y
# CONFIG_MLX4_DEBUG is not set
# CONFIG_MLX5_CORE is not set
CONFIG_MLXSW_CORE=y
CONFIG_MLXSW_CORE_HWMON=y
CONFIG_MLXSW_PCI=y
# CONFIG_NET_VENDOR_MICREL is not set
CONFIG_NET_VENDOR_MICROCHIP=y
# CONFIG_ENC28J60 is not set
CONFIG_ENCX24J600=y
CONFIG_NET_VENDOR_MYRI=y
CONFIG_MYRI10GE=y
# CONFIG_MYRI10GE_DCA is not set
CONFIG_FEALNX=y
# CONFIG_NET_VENDOR_NATSEMI is not set
# CONFIG_NET_VENDOR_NETRONOME is not set
CONFIG_NET_VENDOR_NVIDIA=y
CONFIG_FORCEDETH=y
# CONFIG_NET_VENDOR_OKI is not set
CONFIG_ETHOC=y
# CONFIG_NET_PACKET_ENGINE is not set
CONFIG_NET_VENDOR_QLOGIC=y
# CONFIG_QLA3XXX is not set
# CONFIG_QLCNIC is not set
# CONFIG_QLGE is not set
# CONFIG_NETXEN_NIC is not set
CONFIG_QED=y
CONFIG_QEDE=y
CONFIG_NET_VENDOR_QUALCOMM=y
CONFIG_QCA7000=y
CONFIG_NET_VENDOR_REALTEK=y
CONFIG_8139CP=y
CONFIG_8139TOO=y
CONFIG_8139TOO_PIO=y
# CONFIG_8139TOO_TUNE_TWISTER is not set
# CONFIG_8139TOO_8129 is not set
CONFIG_8139_OLD_RX_RESET=y
# CONFIG_R8169 is not set
CONFIG_NET_VENDOR_RENESAS=y
# CONFIG_NET_VENDOR_RDC is not set
# CONFIG_NET_VENDOR_ROCKER is not set
# CONFIG_NET_VENDOR_SAMSUNG is not set
# CONFIG_NET_VENDOR_SEEQ is not set
# CONFIG_NET_VENDOR_SILAN is not set
# CONFIG_NET_VENDOR_SIS is not set
CONFIG_SFC=y
# CONFIG_SFC_MCDI_MON is not set
# CONFIG_SFC_SRIOV is not set
CONFIG_SFC_MCDI_LOGGING=y
CONFIG_NET_VENDOR_SMSC=y
CONFIG_PCMCIA_SMC91C92=y
CONFIG_EPIC100=y
CONFIG_SMSC911X=y
# CONFIG_SMSC911X_ARCH_HOOKS is not set
CONFIG_SMSC9420=y
CONFIG_NET_VENDOR_STMICRO=y
CONFIG_STMMAC_ETH=y
# CONFIG_STMMAC_PLATFORM is not set
CONFIG_STMMAC_PCI=y
CONFIG_NET_VENDOR_SUN=y
CONFIG_HAPPYMEAL=y
# CONFIG_SUNGEM is not set
CONFIG_CASSINI=y
CONFIG_NIU=y
CONFIG_NET_VENDOR_SYNOPSYS=y
CONFIG_SYNOPSYS_DWC_ETH_QOS=y
# CONFIG_NET_VENDOR_TEHUTI is not set
# CONFIG_NET_VENDOR_TI is not set
# CONFIG_NET_VENDOR_VIA is not set
# CONFIG_NET_VENDOR_WIZNET is not set
CONFIG_NET_VENDOR_XIRCOM=y
# CONFIG_PCMCIA_XIRC2PS is not set
CONFIG_FDDI=y
CONFIG_DEFXX=y
CONFIG_DEFXX_MMIO=y
# CONFIG_SKFP is not set
CONFIG_HIPPI=y
CONFIG_ROADRUNNER=y
CONFIG_ROADRUNNER_LARGE_RINGS=y
CONFIG_NET_SB1000=y
CONFIG_PHYLIB=y