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>
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@ -1941,8 +1941,8 @@ static void check_poison_obj(struct kmem_cache *cachep, void *objp)
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/* Print header */
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/* Print header */
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if (lines == 0) {
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if (lines == 0) {
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printk(KERN_ERR
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printk(KERN_ERR
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"Slab corruption: %s start=%p, len=%d\n",
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"Slab corruption (%s): %s start=%p, len=%d\n",
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cachep->name, realobj, size);
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print_tainted(), cachep->name, realobj, size);
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print_objinfo(cachep, objp, 0);
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print_objinfo(cachep, objp, 0);
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}
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}
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/* Hexdump the affected line */
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/* Hexdump the affected line */
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@ -3051,8 +3051,9 @@ static void check_slabp(struct kmem_cache *cachep, struct slab *slabp)
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if (entries != cachep->num - slabp->inuse) {
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if (entries != cachep->num - slabp->inuse) {
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bad:
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bad:
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printk(KERN_ERR "slab: Internal list corruption detected in "
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printk(KERN_ERR "slab: Internal list corruption detected in "
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"cache '%s'(%d), slabp %p(%d). Hexdump:\n",
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"cache '%s'(%d), slabp %p(%d). Tainted(%s). Hexdump:\n",
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cachep->name, cachep->num, slabp, slabp->inuse);
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cachep->name, cachep->num, slabp, slabp->inuse,
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print_tainted());
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print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, slabp,
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print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, slabp,
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sizeof(*slabp) + cachep->num * sizeof(kmem_bufctl_t),
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sizeof(*slabp) + cachep->num * sizeof(kmem_bufctl_t),
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1);
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1);
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