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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2024-08-05 09:23:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-08-05 09:23:00 -0700 |
| commit | c813111d19e65b6336a6352eae9c1ff5c40f722f (patch) | |
| tree | 0cede8a92ece4c22ecc4c9c4149748fa6ea0e604 | |
| parent | Linux 6.11-rc2 (diff) | |
| parent | mm, slub: do not call do_slab_free for kfence object (diff) | |
| download | wireguard-linux-c813111d19e65b6336a6352eae9c1ff5c40f722f.tar.xz wireguard-linux-c813111d19e65b6336a6352eae9c1ff5c40f722f.zip | |
Merge tag 'slab-fixes-for-6.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab fix from Vlastimil Babka:
"Since v6.8 we've had a subtle breakage in SLUB with KFENCE enabled,
that can cause a crash. It hasn't been found earlier due to quite
specific conditions necessary (OOM during kmem_cache_alloc_bulk())"
* tag 'slab-fixes-for-6.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
mm, slub: do not call do_slab_free for kfence object
Diffstat (limited to '')
| -rw-r--r-- | mm/slub.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/slub.c b/mm/slub.c index 3520acaf9afa..c9d8a2497fd6 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -4690,6 +4690,9 @@ static void __kmem_cache_free_bulk(struct kmem_cache *s, size_t size, void **p) if (!df.slab) continue; + if (kfence_free(df.freelist)) + continue; + do_slab_free(df.s, df.slab, df.freelist, df.tail, df.cnt, _RET_IP_); } while (likely(size)); |