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slab fixes for 7.1-rc4

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Merge tag 'slab-for-7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab

Pull slab fix from Vlastimil Babka:

 - Stable fix for a missing cpus_read_lock in one of the cpu sheaves
   flushing paths (Qing Wang)

* tag 'slab-for-7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
  mm/slub: hold cpus_read_lock around flush_rcu_sheaves_on_cache()
This commit is contained in:
Linus Torvalds 2026-05-22 06:23:56 -07:00
commit 46de4087d3
2 changed files with 3 additions and 0 deletions
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2
mm/slab_common.c
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@ -2110,7 +2110,9 @@ EXPORT_SYMBOL_GPL(kvfree_rcu_barrier);
void kvfree_rcu_barrier_on_cache(struct kmem_cache *s)
{
if (cache_has_sheaves(s)) {
cpus_read_lock();
flush_rcu_sheaves_on_cache(s);
cpus_read_unlock();
rcu_barrier();
}

1
mm/slub.c
View File

@ -4024,6 +4024,7 @@ void flush_rcu_sheaves_on_cache(struct kmem_cache *s)
struct slub_flush_work *sfw;
unsigned int cpu;
lockdep_assert_cpus_held();
mutex_lock(&flush_lock);
for_each_online_cpu(cpu) {