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authorBorislav Petkov <bp@suse.de>2017-02-22 15:41:02 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-22 16:41:27 -0800
commit65b9de75253e909e35d8f5c42357e632fdca5d7f (patch)
tree9b5f5efab8e0df36df2f80907bc9a0519c7e5f07
parentc6e28895a4372992961888ffaadc9efc643b5bfe (diff)
mm/slub: add a dump_stack() to the unexpected GFP check
We wish to know who is doing such a thing. slab.c does this. Link: http://lkml.kernel.org/r/20170116091643.15260-1-bp@alien8.de Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/slub.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/slub.c b/mm/slub.c
index 7ec0a965c6a3..1e5ef312f146 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1630,6 +1630,7 @@ static struct page *new_slab(struct kmem_cache *s, gfp_t flags, int node)
flags &= ~GFP_SLAB_BUG_MASK;
pr_warn("Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n",
invalid_mask, &invalid_mask, flags, &flags);
+ dump_stack();
}
return allocate_slab(s,

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