SLAB support for KASAN
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b4 am [email protected]Versions newest first · linked by author and title
- v8 Latest7 patches 4 repliesIn review
- v77 patches 8 repliesSuperseded
- v67 patches 0 repliesSuperseded
Earlier versions · 6
| Version | Posted | Patches | Replies | Status |
|---|---|---|---|---|
| v5 | 7 patches | 10 replies | Superseded | |
| v4 posting 2/2 | 0 of 7 patches | 3 replies | Superseded | |
| v4 posting 1/2 | 7 patches | 21 replies | Superseded | |
| v3 | 7 patches | 1 reply | Superseded | |
| v2 | 7 patches | 2 replies | Superseded | |
| v1 | 8 patches | 31 replies | Superseded |
Patches in v8 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/7 | kasan: Modify kmalloc_large_oob_right(), add kmalloc_pagealloc_oob_right()lib/ | +27 | 0 replies | |
| 2/7 | mm, kasan: SLAB supportDocumentation/ include/ include/ +9 more | +266 | 0 replies | |
| 3/7 | mm, kasan: Added GFP flags to KASAN APIinclude/ include/ mm/ +5 more | +48 | 0 replies | |
| 4/7 | arch, ftrace: For KASAN put hard/soft IRQ entries into separate sectionsarch/ arch/ arch/ +20 more | +51 | 0 replies | |
| 5/7 | mm, kasan: Stackdepot implementation. Enable stackdepot for SLABarch/ include/ lib/ +6 more | +385 | 0 replies | |
| 6/7 | kasan: Test fix: Warn if the UAF could not be detected in kmalloc_uaf2lib/ | +2 | 0 replies | |
| 7/7 | mm: kasan: Initial memory quarantine implementationinclude/ lib/ mm/ +10 more | +438 | 4 replies |
Reviews trailers per patch
2 of 7 patches have a Reviewed-by or Acked-by.
| Patch | Steven Rostedt | Andrey Ryabinin |
|---|---|---|
| 1/7 | ||
| 2/7 | ||
| 3/7 | ||
| 4/7 | A-b | |
| 5/7 | ||
| 6/7 | A-b | |
| 7/7 |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH v8 0/7] SLAB support for KASAN
This patch set implements SLAB support for KASAN
Unlike SLUB, SLAB doesn't store allocation/deallocation stacks for heap objects, therefore we reimplement this feature in mm/kasan/stackdepot.c. The intention is to ultimately switch SLUB to use this implementation as well, which will save a lot of memory (right now SLUB bloats each object by 256 bytes to store the allocation/deallocation stacks).
Also neither SLUB nor SLAB delay the reuse of freed memory chunks, which is necessary for better detection of use-after-free errors. We introduce memory quarantine (mm/kasan/quarantine.c), which allows delayed reuse of deallocated memory.
Alexander Potapenko (7):
kasan: Modify kmalloc_large_oob_right(), add
kmalloc_pagealloc_oob_right()
mm, kasan: SLAB support
mm, kasan: Added GFP flags to KASAN API
arch, ftrace: For KASAN put hard/soft IRQ entries into separate
sections
mm, kasan: Stackdepot implementation. Enable stackdepot for SLAB
kasan: Test fix: Warn if the UAF could not be detected in kmalloc_uaf2
mm: kasan: Initial memory quarantine implementation
---
v2: - merged two patches that touched kmalloc_large_oob_right
- moved stackdepot implementation to lib/
- moved IRQ definitions to include/linux/interrupt.h
v3: - minor description changes
- store deallocation info in the "mm, kasan: SLAB support" patch
v4: - fix kbuild error reports
v5: - SLAB allocator, stackdepot: adopted suggestions by Andrey Ryabinin
- IRQ: fixed kbuild warnings
v6: - stackdepot: fixed kbuild warnings, simplified kasan_track, use vmalloc() for depot when possible
- quarantine: improved patch description, removed dead code
v7: - fix kbuild error reports
v8: - removed vmalloc() and recursion flags from stackdepot
---
Documentation/kasan.txt | 5 +- arch/arm/include/asm/exception.h | 2 +- arch/arm/kernel/vmlinux.lds.S | 1 + arch/arm64/include/asm/exception.h | 2 +- arch/arm64/kernel/vmlinux.lds.S | 1 + arch/blackfin/kernel/vmlinux.lds.S | 1 + arch/c6x/kernel/vmlinux.lds.S | 1 + arch/metag/kernel/vmlinux.lds.S | 1 + arch/microblaze/kernel/vmlinux.lds.S | 1 + arch/mips/kernel/vmlinux.lds.S | 1 + arch/nios2/kernel/vmlinux.lds.S | 1 + arch/openrisc/kernel/vmlinux.lds.S | 1 + arch/parisc/kernel/vmlinux.lds.S | 1 + arch/powerpc/kernel/vmlinux.lds.S | 1 + arch/s390/kernel/vmlinux.lds.S | 1 + arch/sh/kernel/vmlinux.lds.S | 1 + arch/sparc/kernel/vmlinux.lds.S | 1 + arch/tile/kernel/vmlinux.lds.S | 1 + arch/x86/kernel/Makefile | 1 + arch/x86/kernel/vmlinux.lds.S | 1 + include/asm-generic/vmlinux.lds.h | 12 +- include/linux/ftrace.h | 11 -- include/linux/interrupt.h | 20 +++ include/linux/kasan.h | 63 +++++--- include/linux/slab.h | 10 +- include/linux/slab_def.h | 14 ++ include/linux/slub_def.h | 11 ++ include/linux/stackdepot.h | 32 ++++ kernel/softirq.c | 2 +- kernel/trace/trace_functions_graph.c | 1 + lib/Kconfig | 4 + lib/Kconfig.kasan | 5 +- lib/Makefile | 3 + lib/stackdepot.c | 278 +++++++++++++++++++++++++++++++++ lib/test_kasan.c | 59 ++++++- mm/Makefile | 1 + mm/kasan/Makefile | 4 + mm/kasan/kasan.c | 219 ++++++++++++++++++++++++-- mm/kasan/kasan.h | 44 ++++++ mm/kasan/quarantine.c | 289 +++++++++++++++++++++++++++++++++++ mm/kasan/report.c | 63 ++++++-- mm/mempool.c | 23 +-- mm/page_alloc.c | 2 +- mm/slab.c | 53 ++++++- mm/slab.h | 4 +- mm/slab_common.c | 8 +- mm/slub.c | 19 +-- 47 files changed, 1188 insertions(+), 92 deletions(-) create mode 100644 include/linux/stackdepot.h create mode 100644 lib/stackdepot.c create mode 100644 mm/kasan/quarantine.c
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