[dm-devel] [PATCH] dm: memory leak in failed table_load()
Kiyoshi Ueda
k-ueda at ct.jp.nec.com
Wed Nov 9 22:07:32 UTC 2005
Hi Alasdair,
This patch fixes following two problems which occur when "dmsetup load foo"
is executed before the map of the "foo" is created.
o memory leak.
o unable to unload the dm_mod module.
Please consider to apply.
How to reproduce the problem:
# echo "0 10 linear 8:16 0" | dmsetup load foo
(Need to change "8:16" appropriately.)
Patch for 2.6.14:
Signed-off-by: Kiyoshi Ueda <k-ueda at ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura at ce.jp.nec.com>
diff -up 2.6.14/drivers/md/dm-ioctl.c fix/drivers/md/dm-ioctl.c
--- 2.6.14/drivers/md/dm-ioctl.c 2005-10-27 20:02:08.000000000 -0400
+++ fix/drivers/md/dm-ioctl.c 2005-11-09 15:29:59.000000000 -0500
@@ -974,6 +974,7 @@ static int table_load(struct dm_ioctl *p
if (!hc) {
DMWARN("device doesn't appear to be in the dev hash table.");
up_write(&_hash_lock);
+ dm_table_put(t);
return -ENXIO;
}
Thanks,
Kiyoshi Ueda
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