From 15b80ce661bfb384e44b09e49e7d22d02bf15208 Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Wed, 5 Oct 2011 11:42:42 +1100 Subject: [PATCH] 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 Cc: Pekka Enberg Signed-off-by: Andrew Morton --- mm/slab.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/mm/slab.c b/mm/slab.c index 708efe886154..9ef775470c8b 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -1927,8 +1927,8 @@ 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 */ @@ -3037,8 +3037,9 @@ 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); -- 2.39.5