Commit 98072e4d authored Oct 28, 2010 by Pavel Emelyanov Committed by Pekka Enberg Nov 06, 2010

slub: Fix slub_lock down/up imbalance



There are two places, that do not release the slub_lock.

Respective bugs were introduced by sysfs changes ab4d5ed5 (slub: Enable
sysfs support for !CONFIG_SLUB_DEBUG) and 2bce6485 ( slub: Allow removal
of slab caches during boot).

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

parent 716ce5d4

mm/slub.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -3289,9 +3289,9 @@ struct kmem_cache kmem_cache_create(const char name, size_t size,
		kfree(n);
		kfree(s);
		}
		err:
		up_write(&slub_lock);

		err:
		if (flags & SLAB_PANIC)
		panic("Cannot create slabcache %s\n", name);
		else
		@@ -3878,6 +3878,7 @@ static ssize_t show_slab_objects(struct kmem_cache *s,
		x += sprintf(buf + x, " N%d=%lu",
		node, nodes[node]);
		#endif
		up_read(&slub_lock);
		kfree(nodes);
		return x + sprintf(buf + x, "\n");
		}