6.12-stable review patch. If anyone has any objections, please let me know.
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From: Suren Baghdasaryan surenb@google.com
commit f7381b9116407ba2a429977c80ff8df953ea9354 upstream.
alloc_slab_obj_exts() should mark failed obj_exts vector allocations independent on whether the vector is being allocated for a new or an existing slab. Current implementation skips doing this for existing slabs. Fix this by marking failed allocations unconditionally.
Fixes: 09c46563ff6d ("codetag: debug: introduce OBJEXTS_ALLOC_FAIL to mark failed slab_ext allocations") Reported-by: Shakeel Butt shakeel.butt@linux.dev Closes: https://lore.kernel.org/all/avhakjldsgczmq356gkwmvfilyvf7o6temvcmtt5lqd4fhp5... Signed-off-by: Suren Baghdasaryan surenb@google.com Cc: stable@vger.kernel.org # v6.10+ Acked-by: Shakeel Butt shakeel.butt@linux.dev Signed-off-by: Vlastimil Babka vbabka@suse.cz Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- mm/slub.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
--- a/mm/slub.c +++ b/mm/slub.c @@ -1999,8 +1999,7 @@ int alloc_slab_obj_exts(struct slab *sla slab_nid(slab)); if (!vec) { /* Mark vectors which failed to allocate */ - if (new_slab) - mark_failed_objexts_alloc(slab); + mark_failed_objexts_alloc(slab);
return -ENOMEM; }