From: Jeff Layton Date: Mon, 9 Dec 2013 14:38:00 +0000 (-0500) Subject: rpc_pipe: fix cleanup of dummy gssd directory when notification fails X-Git-Tag: firefly_0821_release~176^2~4491^2~33 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=23e66ba97127ff3b064d4c6c5138aa34eafc492f;p=firefly-linux-kernel-4.4.55.git rpc_pipe: fix cleanup of dummy gssd directory when notification fails Currently, it could leak dentry references in some cases. Make sure we clean up properly. Signed-off-by: Jeff Layton Signed-off-by: Trond Myklebust --- diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c index 5d973b25b5b0..b18554898562 100644 --- a/net/sunrpc/rpc_pipe.c +++ b/net/sunrpc/rpc_pipe.c @@ -1369,6 +1369,18 @@ out: return pipe_dentry; } +static void +rpc_gssd_dummy_depopulate(struct dentry *pipe_dentry) +{ + struct dentry *clnt_dir = pipe_dentry->d_parent; + struct dentry *gssd_dir = clnt_dir->d_parent; + + __rpc_rmpipe(clnt_dir->d_inode, pipe_dentry); + __rpc_depopulate(clnt_dir, gssd_dummy_info_file, 0, 1); + __rpc_depopulate(gssd_dir, gssd_dummy_clnt_dir, 0, 1); + dput(pipe_dentry); +} + static int rpc_fill_super(struct super_block *sb, void *data, int silent) { @@ -1412,7 +1424,7 @@ rpc_fill_super(struct super_block *sb, void *data, int silent) return 0; err_depopulate: - dput(gssd_dentry); + rpc_gssd_dummy_depopulate(gssd_dentry); blocking_notifier_call_chain(&rpc_pipefs_notifier_list, RPC_PIPEFS_UMOUNT, sb);