| From | Kamal Mostafa <> | Subject | [PATCH 3.19.y-ckt 098/170] vfs: show_vfsstat: do not ignore errors from show_devname method | Date | Fri, 1 Apr 2016 17:53:04 -0700 |
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3.19.8-ckt18 -stable review patch. If anyone has any objections, please let me know.
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From: "Dmitry V. Levin" <ldv@altlinux.org>
commit 5f8d498d4364f544fee17125787a47553db02afa upstream.
Explicitly check show_devname method return code and bail out in case of an error. This fixes regression introduced by commit 9d4d65748a5c.
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- fs/proc_namespace.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/fs/proc_namespace.c b/fs/proc_namespace.c index 0f96f71..a29f17a 100644 --- a/fs/proc_namespace.c +++ b/fs/proc_namespace.c @@ -195,6 +195,8 @@ 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 "); -- 2.7.4
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