diff options
| author | Vincenzo Frascino <vincenzo.frascino@arm.com> | 2020-08-06 23:24:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-07 11:33:28 -0700 |
| commit | c0e16ab3b5887e86cd45b95e28cf66498b161ee1 (patch) | |
| tree | 66de1cc0ea65e714d64b072b848dab657ba6b29f /include/linux/kasan.h | |
| parent | 9793b62663f54e369a3986543b296992a8a0589c (diff) | |
kasan: remove kasan_unpoison_stack_above_sp_to()
kasan_unpoison_stack_above_sp_to() is defined in kasan code but never
used. The function was introduced as part of the commit:
commit 9f7d416c36124667 ("kprobes: Unpoison stack in jprobe_return() for KASAN")
... where it was necessary because x86's jprobe_return() would leave
stale shadow on the stack, and was an oddity in that regard.
Since then, jprobes were removed entirely, and as of commit:
commit 80006dbee674f9fa ("kprobes/x86: Remove jprobe implementation")
... there have been no callers of this function.
Remove the declaration and the implementation.
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Link: http://lkml.kernel.org/r/20200706143505.23299-1-vincenzo.frascino@arm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/kasan.h')
| -rw-r--r-- | include/linux/kasan.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/kasan.h b/include/linux/kasan.h index 18452e35e7b2..087fba34b209 100644 --- a/include/linux/kasan.h +++ b/include/linux/kasan.h @@ -38,7 +38,6 @@ extern void kasan_disable_current(void); void kasan_unpoison_shadow(const void *address, size_t size); void kasan_unpoison_task_stack(struct task_struct *task); -void kasan_unpoison_stack_above_sp_to(const void *watermark); void kasan_alloc_pages(struct page *page, unsigned int order); void kasan_free_pages(struct page *page, unsigned int order); @@ -101,7 +100,6 @@ void kasan_restore_multi_shot(bool enabled); static inline void kasan_unpoison_shadow(const void *address, size_t size) {} static inline void kasan_unpoison_task_stack(struct task_struct *task) {} -static inline void kasan_unpoison_stack_above_sp_to(const void *watermark) {} static inline void kasan_enable_current(void) {} static inline void kasan_disable_current(void) {} |