linux-kernel - [patch] 9p: return on mutex_lock

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:	Tue, 30 Mar 2010 12:41:25 +0300
From:	Dan Carpenter <error27@...il.com>
To:	Eric Van Hensbergen <ericvh@...il.com>
Cc:	Ron Minnich <rminnich@...dia.gov>,
	Latchesar Ionkov <lucho@...kov.net>,
	Sripathi Kodi <sripathik@...ibm.com>,
	Jim Garlick <garlick@...l.gov>,
	Martin Stava <martin.stava@...il.com>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	v9fs-developer@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [patch] 9p: return on mutex_lock_interruptible()

If "err" is -EINTR here the original code calls mutex_unlock() and then
returns, but it should just return directly.

Signed-off-by: Dan Carpenter <error27@...il.com>

diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c
index d8a3afe..bbe00cf 100644
--- a/fs/9p/vfs_dir.c
+++ b/fs/9p/vfs_dir.c
@@ -130,6 +130,8 @@ static int v9fs_dir_readdir(struct file *filp, void *dirent, filldir_t filldir)
 	rdir = (struct p9_rdir *) fid->rdir;
 
 	err = mutex_lock_interruptible(&rdir->mutex);
+	if (err)
+		return err;
 	while (err == 0) {
 		if (rdir->tail == rdir->head) {
 			err = v9fs_file_readn(filp, rdir->buf, NULL,
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/