AuxXxilium/linux_dsm_epyc7002
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slab: add taint flag outputting to debug paths.

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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>
This commit is contained in:
Dave Jones 2011-11-15 15:03:52 -08:00 committed by Pekka Enberg
parent 265d47e711
commit face37f5e6
1 changed files with 5 additions and 4 deletions
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9
mm/slab.c
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@ -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);