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slab fixes for 6.12-rc6

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Merge tag 'slab-for-6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab

Pull slab fixes from Vlastimil Babka:

 - Fix for a slub_kunit test warning with MEM_ALLOC_PROFILING_DEBUG (Pei
   Xiao)

 - Fix for a MTE-based KASAN BUG in krealloc() (Qun-Wei Lin)

* tag 'slab-for-6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
  mm: krealloc: Fix MTE false alarm in __do_krealloc
  slub/kunit: fix a WARNING due to unwrapped __kmalloc_cache_noprof
This commit is contained in:
Linus Torvalds 2024-10-29 16:24:02 -10:00
commit 7fbaacafbc
2 changed files with 2 additions and 2 deletions
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2
lib/slub_kunit.c
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@ -141,7 +141,7 @@ static void test_kmalloc_redzone_access(struct kunit *test)
{
struct kmem_cache *s = test_kmem_cache_create("TestSlub_RZ_kmalloc", 32,
SLAB_KMALLOC|SLAB_STORE_USER|SLAB_RED_ZONE);
u8 *p = __kmalloc_cache_noprof(s, GFP_KERNEL, 18);
u8 *p = alloc_hooks(__kmalloc_cache_noprof(s, GFP_KERNEL, 18));
kasan_disable_current();

2
mm/slab_common.c
View File

@ -1209,7 +1209,7 @@ __do_krealloc(const void *p, size_t new_size, gfp_t flags)
/* Zero out spare memory. */
if (want_init_on_alloc(flags)) {
kasan_disable_current();
memset((void *)p + new_size, 0, ks - new_size);
memset(kasan_reset_tag(p) + new_size, 0, ks - new_size);
kasan_enable_current();
}