path: root/ipc
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authorShakeel Butt <>2018-03-28 16:00:57 -0700
committerLinus Torvalds <>2018-03-28 13:42:05 -1000
commit880cd276dff17ea29e9a8404275c9502b265afa7 (patch)
tree535ad8d555b7ef5ed33f8dc9fdb73ec50d53ed54 /ipc
parent3eb2ce825ea1ad89d20f7a3b5780df850e4be274 (diff)
mm, slab: memcg_link the SLAB's kmem_cache
All the root caches are linked into slab_root_caches which was introduced by the commit 510ded33e075 ("slab: implement slab_root_caches list") but it missed to add the SLAB's kmem_cache. While experimenting with opt-in/opt-out kmem accounting, I noticed system crashes due to NULL dereference inside cache_from_memcg_idx() while deferencing kmem_cache.memcg_params.memcg_caches. The upstream clean kernel will not see these crashes but SLAB should be consistent with SLUB which does linked its boot caches (kmem_cache_node and kmem_cache) into slab_root_caches. Link: Fixes: 510ded33e075c ("slab: implement slab_root_caches list") Signed-off-by: Shakeel Butt <> Cc: Tejun Heo <> Cc: Vladimir Davydov <> Cc: Greg Thelen <> Cc: Christoph Lameter <> Cc: Pekka Enberg <> Cc: David Rientjes <> Cc: Joonsoo Kim <> Cc: Johannes Weiner <> Cc: Michal Hocko <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'ipc')
0 files changed, 0 insertions, 0 deletions
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