Messages in this thread Patch in this message | | | From | Andrey Vagin <> | Subject | [PATCH] mnt: release locks on error path in do_loopback | Date | Tue, 9 Apr 2013 17:33:29 +0400 |
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do_loopback calls lock_mount(path) and forget to unlock_mount if clone_mnt or copy_mnt fails.
[ 77.661566] ================================================ [ 77.662939] [ BUG: lock held when returning to user space! ] [ 77.664104] 3.9.0-rc5+ #17 Not tainted [ 77.664982] ------------------------------------------------ [ 77.666488] mount/514 is leaving the kernel with locks still held! [ 77.668027] 2 locks held by mount/514: [ 77.668817] #0: (&sb->s_type->i_mutex_key#7){+.+.+.}, at: [<ffffffff811cca22>] lock_mount+0x32/0xe0 [ 77.671755] #1: (&namespace_sem){+++++.}, at: [<ffffffff811cca3a>] lock_mount+0x4a/0xe0
Signed-off-by: Andrey Vagin <avagin@openvz.org> --- fs/namespace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/namespace.c b/fs/namespace.c index f4fa671e..a81343e 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1704,7 +1704,7 @@ static int do_loopback(struct path *path, const char *old_name, if (IS_ERR(mnt)) { err = PTR_ERR(mnt); - goto out; + goto out2; } err = graft_tree(mnt, path); -- 1.8.1.4
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