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authorDave Jones <davej@redhat.com>2011-11-15 15:03:52 -0800
committerPekka Enberg <penberg@kernel.org>2011-11-16 21:14:44 +0200
commitface37f5e615646f364fa848f0a5c9d361d7a46e (patch)
treead6af6c7251032f4f05a7f220ee3fb3e9eba20b2 /mm/slab.c
parent265d47e7115023df9e2b7a864b207b4738d9e18c (diff)
slab: add taint flag outputting to debug paths.
When we get corruption reports, it's useful to see if the kernel was tainted, to rule out problems we can't do anything about. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Pekka Enberg <penberg@kernel.org>
Diffstat (limited to 'mm/slab.c')
-rw-r--r--mm/slab.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/mm/slab.c b/mm/slab.c
index b0414d12fd0..a7f9c244aac 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -1941,8 +1941,8 @@ static void check_poison_obj(struct kmem_cache *cachep, void *objp)
/* Print header */
if (lines == 0) {
printk(KERN_ERR
- "Slab corruption: %s start=%p, len=%d\n",
- cachep->name, realobj, size);
+ "Slab corruption (%s): %s start=%p, len=%d\n",
+ print_tainted(), cachep->name, realobj, size);
print_objinfo(cachep, objp, 0);
}
/* Hexdump the affected line */
@@ -3051,8 +3051,9 @@ static void check_slabp(struct kmem_cache *cachep, struct slab *slabp)
if (entries != cachep->num - slabp->inuse) {
bad:
printk(KERN_ERR "slab: Internal list corruption detected in "
- "cache '%s'(%d), slabp %p(%d). Hexdump:\n",
- cachep->name, cachep->num, slabp, slabp->inuse);
+ "cache '%s'(%d), slabp %p(%d). Tainted(%s). Hexdump:\n",
+ cachep->name, cachep->num, slabp, slabp->inuse,
+ print_tainted());
print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, slabp,
sizeof(*slabp) + cachep->num * sizeof(kmem_bufctl_t),
1);