From: Richard Weinberger <richard@nod.at>
Date: Fri, 27 Feb 2015 21:56:28 +0000 (+0100)
Subject: hostfs: hostfs_file_open: Fix a fd leak in hostfs_file_open
X-Git-Tag: v4.1-rc1~121^2~24
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=af9556586a906106453ff7df8bcacf795b2b7d0a;p=linux.git

hostfs: hostfs_file_open: Fix a fd leak in hostfs_file_open

In case of a race between to callers of hostfs_file_open()
it can happen that a file describtor is leaked.

Signed-off-by: Richard Weinberger <richard@nod.at>
---

diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index 104d58d2c78c..112ba5aa0848 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -329,6 +329,7 @@ static int hostfs_file_open(struct inode *ino, struct file *file)
 	/* somebody else had handled it first? */
 	if ((mode & HOSTFS_I(ino)->mode) == mode) {
 		mutex_unlock(&HOSTFS_I(ino)->open_mutex);
+		close_file(&fd);
 		return 0;
 	}
 	if ((mode | HOSTFS_I(ino)->mode) != mode) {