Skip to contentSkip to conversation

New: clang-14 fails 5.18-rc3 ppc64 BE kernel build - <unknown>:0: error: expected relocatable expression

Bug 215862 [email protected] 1 participant 7 messages Apr 18, 2022 – Jul 31, 2023

lore
Share & tools
lore

[email protected]

author
#0 lore raw

https://bugzilla.kernel.org/show_bug.cgi?id=215862

Bug ID: 215862
Summary: clang-14 fails 5.18-rc3 ppc64 BE kernel build -
<unknown>:0: error: expected relocatable expression
Product: Platform Specific/Hardware
Version: 2.5
Kernel Version: 5.18-rc3
Hardware: PPC-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: PPC-64
Assignee: [email protected]
Reporter: [email protected]
Regression: No

Created attachment 300776
--> https://bugzilla.kernel.org/attachment.cgi?id=300776&action=edit
kernel .config (kernel 5.18-rc3, Talos II)

# make LLVM=1
[...]
  AR      usr/built-in.a
  CC      arch/powerpc/kernel/ptrace/ptrace.o
  CC      arch/powerpc/kernel/ptrace/ptrace-view.o
  CC      arch/powerpc/kernel/ptrace/ptrace-fpu.o
  CC      arch/powerpc/kernel/ptrace/ptrace32.o
  CC      arch/powerpc/kernel/ptrace/ptrace-vsx.o
  CC      arch/powerpc/kernel/ptrace/ptrace-altivec.o
  CC      arch/powerpc/kernel/ptrace/ptrace-tm.o
  CC      arch/powerpc/kernel/ptrace/ptrace-noadv.o
  AR      arch/powerpc/kernel/ptrace/built-in.a
  AR      arch/powerpc/kernel/trace/built-in.a
  AS      arch/powerpc/kernel/head_64.o
<unknown>:0: error: expected relocatable expression
make[2]: *** [scripts/Makefile.build:389: arch/powerpc/kernel/head_64.o] Fehler
1
make[1]: *** [scripts/Makefile.build:550: arch/powerpc/kernel] Fehler 2
make: *** [Makefile:1834: arch/powerpc] Fehler 2

Toolchain used was llvm/clang/lld-14.0.1. Same kernel builds fine with gcc-11.2, binutils-2.37.

Signature · 4 lines
You may reply to this email to add a comment.

You are receiving this mail because:
You are watching the assignee of the bug.
author
#1 lore raw

[Bug 215862] clang-15 fails ppc64 BE kernel build - ld.lld: error: undefined symbol: .early_setup

https://bugzilla.kernel.org/show_bug.cgi?id=215862

Erhard F. ([email protected]) changed:

What |Removed |Added
----------------------------------------------------------------------------

            Summary|clang-14 fails 5.18-rc3     |clang-15 fails ppc64 BE
                   |ppc64 BE kernel build -     |kernel build - ld.lld:
                   |<unknown>:0: error:         |error: undefined symbol:
                   |expected relocatable        |.early_setup
                   |expression                  |

--- Comment #1 from Erhard F. ([email protected]) --- Reinvestigated with clang 15 on my PowerMac G5 11,2.

Got further on as kernel + modules are built now. But I get an error at the linking stage:

# LLVM=1 LLVM_IAS=1 make

  CALL    scripts/checksyscalls.sh
  UPD     include/generated/utsversion.h
  CC      init/version-timestamp.o
  LD      .tmp_vmlinux.kallsyms1

ld.lld: error: undefined symbol: .early_setup

Quoted 10 lines
Quoted 10 lines
Quoted 10 lines

referenced by head_64.S:973 (/usr/src/linux-stable/arch/powerpc/kernel/head_64.S:973)

              arch/powerpc/kernel/head_64.o:(.ref.text+0xBE) in archive
              vmlinux.a
referenced by head_64.S:973
(/usr/src/linux-stable/arch/powerpc/kernel/head_64.S:973)
              arch/powerpc/kernel/head_64.o:(.ref.text+0xC2) in archive
              vmlinux.a

did you mean: early_setup
defined in: vmlinux.a(arch/powerpc/kernel/setup_64.o)

make[1]: *** [scripts/Makefile.vmlinux:34: vmlinux] Error 1
make: *** [Makefile:1236: vmlinux] Error 2

Toolchain used was llvm/clang/lld-15.0.3. Same kernel builds fine with gcc-12.2, binutils-2.39.

Signature · 4 lines
You may reply to this email to add a comment.

You are receiving this mail because:
You are watching the assignee of the bug.
author
#2 lore raw

[Bug 215862] clang-15 fails ppc64 BE kernel build - ld.lld: error: undefined symbol: .early_setup

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=215862

--- Comment #2 from Erhard F. ([email protected]) --- Created attachment 303185
--> https://bugzilla.kernel.org/attachment.cgi?id=303185&action=edit
kernel .config (6.1-rc5, PowerMac G5 11,2)

Signature · 4 lines
You may reply to this email to add a comment.

You are receiving this mail because:
You are watching the assignee of the bug.
author
#3 lore raw

[Bug 215862] clang-15 fails ppc64 BE kernel build - ld.lld: error: undefined symbol: .early_setup

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=215862

Christophe Leroy ([email protected]) changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |[email protected]

--- Comment #3 from Christophe Leroy ([email protected]) --- If not already done, can you report the problem at
https://github.com/ClangBuiltLinux/linux/issues

Signature · 4 lines
You may reply to this email to add a comment.

You are receiving this mail because:
You are watching the assignee of the bug.
author
#4 lore raw

[Bug 215862] clang-15 fails ppc64 BE kernel build - ld.lld: error: undefined symbol: .early_setup

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=215862

Erhard F. ([email protected]) changed:

What |Removed |Added
----------------------------------------------------------------------------

                URL|                            |https://github.com/ClangBui
                   |                            |ltLinux/linux/issues/1761

--- Comment #4 from Erhard F. ([email protected]) --- (In reply to Christophe Leroy from comment #3)

Quoted 2 lines

If not already done, can you report the problem at
https://github.com/ClangBuiltLinux/linux/issues

I was not aware of this issue tracker. Thanks for the hint!

Filed now unter https://github.com/ClangBuiltLinux/linux/issues/1761

Signature · 4 lines
You may reply to this email to add a comment.

You are receiving this mail because:
You are watching the assignee of the bug.
author
#5 lore raw

[Bug 215862] clang-15 fails ppc64 BE kernel build - ld.lld: error: undefined symbol: .early_setup

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=215862

Erhard F. ([email protected]) changed:

What |Removed |Added
----------------------------------------------------------------------------

             Status|NEW                         |RESOLVED
         Resolution|---                         |OBSOLETE

--- Comment #5 from Erhard F. ([email protected]) --- Fixed in kernel v6.4.x series.

Closing.

Signature · 4 lines
You may reply to this email to add a comment.

You are receiving this mail because:
You are watching the assignee of the bug.