A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 11:41:38 -04:00
Code Issues Projects Releases Packages Wiki Activity

fix RCU-callback-after-kmem_cache_destroy problem in sl[aou]b

Browse source 
Jesper noted that kmem_cache_destroy() invokes synchronize_rcu() rather than
rcu_barrier() in the SLAB_DESTROY_BY_RCU case, which could result in RCU
callbacks accessing a kmem_cache after it had been destroyed.

Cc: <[email protected]>
Acked-by: Matt Mackall <[email protected]>
Reported-by: Jesper Dangaard Brouer <[email protected]>
Signed-off-by: Paul E. McKenney <[email protected]>
Signed-off-by: Pekka Enberg <[email protected]>
This commit is contained in:
Paul E. McKenney 2009-06-25 12:31:37 -07:00 • committed by Pekka Enberg
commit 7ed9f7e5db
3 changed files with 5 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
mm/slob.c
View file

@ -595,6 +595,8 @@ EXPORT_SYMBOL(kmem_cache_create);
void kmem_cache_destroy(struct kmem_cache *c)
{
kmemleak_free(c);
if (c->flags & SLAB_DESTROY_BY_RCU)
rcu_barrier();
slob_free(c, sizeof(struct kmem_cache));
}
EXPORT_SYMBOL(kmem_cache_destroy);