diff options
| author | Andrey Konovalov <andreyknvl@google.com> | 2020-12-22 21:02:49 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-22 21:55:08 +0100 |
| commit | 77f57c983065d0569ee1b4af80f07224b439af57 (patch) | |
| tree | 5f1f30bf0c190058cfd65cbca52a830f0153d781 | |
| parent | kasan: allow VMAP_STACK for HW_TAGS mode (diff) | |
| download | linux-77f57c983065d0569ee1b4af80f07224b439af57.tar.xz linux-77f57c983065d0569ee1b4af80f07224b439af57.zip | |
kasan: remove __kasan_unpoison_stack
There's no need for __kasan_unpoison_stack() helper, as it's only
currently used in a single place. Removing it also removes unneeded
arithmetic.
No functional changes.
Link: https://lkml.kernel.org/r/93e78948704a42ea92f6248ff8a725613d721161.1606162397.git.andreyknvl@google.com
Link: https://linux-review.googlesource.com/id/Ie5ba549d445292fe629b4a96735e4034957bcc50
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Marco Elver <elver@google.com>
Tested-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Branislav Rankov <Branislav.Rankov@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/kasan/common.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/mm/kasan/common.c b/mm/kasan/common.c index 2754ce0c8334..b71dfe7c5059 100644 --- a/mm/kasan/common.c +++ b/mm/kasan/common.c @@ -64,18 +64,12 @@ void kasan_unpoison_range(const void *address, size_t size) } #if CONFIG_KASAN_STACK -static void __kasan_unpoison_stack(struct task_struct *task, const void *sp) -{ - void *base = task_stack_page(task); - size_t size = sp - base; - - unpoison_range(base, size); -} - /* Unpoison the entire stack for a task. */ void kasan_unpoison_task_stack(struct task_struct *task) { - __kasan_unpoison_stack(task, task_stack_page(task) + THREAD_SIZE); + void *base = task_stack_page(task); + + unpoison_range(base, THREAD_SIZE); } /* Unpoison the stack for the current task beyond a watermark sp value. */ |