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| author | Marco Elver <elver@google.com> | 2021-02-26 02:19:08 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-26 18:41:02 +0100 |
| commit | d438fabce7860df3cb9337776be6f90b59ced8ed (patch) | |
| tree | 912661af5be56d1fe1b7428a49e1b176e4b50515 /mm/pagewalk.c | |
| parent | arm64, kfence: enable KFENCE for ARM64 (diff) | |
| download | linux-d438fabce7860df3cb9337776be6f90b59ced8ed.tar.xz linux-d438fabce7860df3cb9337776be6f90b59ced8ed.zip | |
kfence: use pt_regs to generate stack trace on faults
Instead of removing the fault handling portion of the stack trace based on
the fault handler's name, just use struct pt_regs directly.
Change kfence_handle_page_fault() to take a struct pt_regs, and plumb it
through to kfence_report_error() for out-of-bounds, use-after-free, or
invalid access errors, where pt_regs is used to generate the stack trace.
If the kernel is a DEBUG_KERNEL, also show registers for more information.
Link: https://lkml.kernel.org/r/20201105092133.2075331-1-elver@google.com
Signed-off-by: Marco Elver <elver@google.com>
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Jann Horn <jannh@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/pagewalk.c')
0 files changed, 0 insertions, 0 deletions