The patch titled
Subject: mm/slub: add a dump_stack() to the unexpected GFP check
has been added to the -mm tree. Its filename is
mm-slub-add-a-dump_stack-to-the-unexpected-gfp-check.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-slub-add-a-dump_stack-to-the-unexpected-gfp-check.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-slub-add-a-dump_stack-to-the-unexpected-gfp-check.patch
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------------------------------------------------------
From: Borislav Petkov <bp@xxxxxxx>
Subject: 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@xxxxxxxxx
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/slub.c | 1 +
1 file changed, 1 insertion(+)
diff -puN mm/slub.c~mm-slub-add-a-dump_stack-to-the-unexpected-gfp-check mm/slub.c
--- a/mm/slub.c~mm-slub-add-a-dump_stack-to-the-unexpected-gfp-check
+++ a/mm/slub.c
@@ -1626,6 +1626,7 @@ static struct page *new_slab(struct kmem
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,
_
Patches currently in -mm which might be from bp@xxxxxxx are
mm-slub-add-a-dump_stack-to-the-unexpected-gfp-check.patch
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