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authorDmitry V. Levin <ldv@altlinux.org>2015-03-19 11:10:54 +0000
committerAl Viro <viro@zeniv.linux.org.uk>2016-03-16 13:09:08 -0400
commit5f8d498d4364f544fee17125787a47553db02afa (patch)
tree470014f8c179847b339244db471f0351bd19889b
parenta5b3a80b899bda0f456f1246c4c5a1191ea01519 (diff)
vfs: show_vfsstat: do not ignore errors from show_devname method
Explicitly check show_devname method return code and bail out in case of an error. This fixes regression introduced by commit 9d4d65748a5c. Cc: stable@vger.kernel.org Signed-off-by: Dmitry V. Levin <ldv@altlinux.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--fs/proc_namespace.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/proc_namespace.c b/fs/proc_namespace.c
index 2256e7e23e67..3f1190d18991 100644
--- a/fs/proc_namespace.c
+++ b/fs/proc_namespace.c
@@ -199,6 +199,8 @@ static int show_vfsstat(struct seq_file *m, struct vfsmount *mnt)
if (sb->s_op->show_devname) {
seq_puts(m, "device ");
err = sb->s_op->show_devname(m, mnt_path.dentry);
+ if (err)
+ goto out;
} else {
if (r->mnt_devname) {
seq_puts(m, "device ");