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| author | Andrey Konovalov <andreyknvl@google.com> | 2023-12-19 23:28:53 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-12-29 11:58:38 -0800 |
| commit | b556a462eb8df6b6836c318d23f43409c40a7c7e (patch) | |
| tree | 15248e18ef1834502109aea25ecce651ddca1b74 /include | |
| parent | cf0da2afe3dc2462b07fc951fa335a318eb38775 (diff) | |
| download | linux-stable-b556a462eb8df6b6836c318d23f43409c40a7c7e.tar.gz linux-stable-b556a462eb8df6b6836c318d23f43409c40a7c7e.tar.bz2 linux-stable-b556a462eb8df6b6836c318d23f43409c40a7c7e.zip | |
kasan: save free stack traces for slab mempools
Make kasan_mempool_poison_object save free stack traces for slab and
kmalloc mempools when the object is freed into the mempool.
Also simplify and rename ____kasan_slab_free to poison_slab_object and do
a few other reability changes.
Link: https://lkml.kernel.org/r/413a7c7c3344fb56809853339ffaabc9e4905e94.1703024586.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Alexander Lobakin <alobakin@pm.me>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Breno Leitao <leitao@debian.org>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Marco Elver <elver@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kasan.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/kasan.h b/include/linux/kasan.h index f8ebde384bd7..e636a00e26ba 100644 --- a/include/linux/kasan.h +++ b/include/linux/kasan.h @@ -268,8 +268,9 @@ bool __kasan_mempool_poison_object(void *ptr, unsigned long ip); * to reuse them instead of freeing them back to the slab allocator (e.g. * mempool). * - * This function poisons a slab allocation without initializing its memory and - * without putting it into the quarantine (for the Generic mode). + * This function poisons a slab allocation and saves a free stack trace for it + * without initializing the allocation's memory and without putting it into the + * quarantine (for the Generic mode). * * This function also performs checks to detect double-free and invalid-free * bugs and reports them. The caller can use the return value of this function |