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authorSuman Anna <s-anna@ti.com>2015-09-17 03:29:17 +0300
committerMichael S. Tsirkin <mst@redhat.com>2015-12-07 18:28:01 +0300
commitc13f99b7e945dad5273a8b7ee230f4d1f22d3354 (patch)
tree353f94e6bd5dace0868a833a35787b849f060e3f /drivers/virtio
parentd542483876f6ed720f573de3fbb1d8e60ccd0d6e (diff)
downloadlinux-c13f99b7e945dad5273a8b7ee230f4d1f22d3354.tar.xz
virtio: fix memory leak of virtio ida cache layers
The virtio core uses a static ida named virtio_index_ida for assigning index numbers to virtio devices during registration. The ida core may allocate some internal idr cache layers and an ida bitmap upon any ida allocation, and all these layers are truely freed only upon the ida destruction. The virtio_index_ida is not destroyed at present, leading to a memory leak when using the virtio core as a module and atleast one virtio device is registered and unregistered. Fix this by invoking ida_destroy() in the virtio core module exit. Cc: stable@vger.kernel.org Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/virtio')
-rw-r--r--drivers/virtio/virtio.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index b1877d73fa56..7062bb0975a5 100644
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -412,6 +412,7 @@ static int virtio_init(void)
static void __exit virtio_exit(void)
{
bus_unregister(&virtio_bus);
+ ida_destroy(&virtio_index_ida);
}
core_initcall(virtio_init);
module_exit(virtio_exit);