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Merge tag 'slab-for-6.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab

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Pull slab fix from Vlastimil Babka:

 - Fix memory leak of objects from remote NUMA node when bulk freeing to
   a cache with sheaves (Harry Yoo)

* tag 'slab-for-6.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
  mm/slub: fix memory leak in free_to_pcs_bulk()
This commit is contained in:
Linus Torvalds
2025-11-13 11:42:44 -08:00
parent 8b4a014e28 cbcff934fa
commit 9b9e43704d
1 changed files with 6 additions and 2 deletions
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8
mm/slub.c
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@@ -6336,8 +6336,6 @@ next_remote_batch:
if (unlikely(!slab_free_hook(s, p[i], init, false))) { if (unlikely(!slab_free_hook(s, p[i], init, false))) {
p[i] = p[--size]; p[i] = p[--size];
if (!size)
goto flush_remote;
continue; continue;
} }
@@ -6352,6 +6350,9 @@ next_remote_batch:
i++; i++;
} }
if (!size)
goto flush_remote;
next_batch: next_batch:
if (!local_trylock(&s->cpu_sheaves->lock)) if (!local_trylock(&s->cpu_sheaves->lock))
goto fallback; goto fallback;
@@ -6406,6 +6407,9 @@ do_free:
goto next_batch; goto next_batch;
} }
if (remote_nr)
goto flush_remote;
return; return;
no_empty: no_empty: