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mnt: If fs_fully_visible fails call put_filesystem.

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commit 97c1df3e54e811aed484a036a798b4b25d002ecf upstream.

Add this trivial missing error handling.

Fixes: 1b852bceb0 ("mnt: Refactor the logic for mounting sysfs and proc in a user namespace")
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Eric W. Biederman
2016-06-06 15:36:07 -05:00
committed by Greg Kroah-Hartman
parent 6256d2f541
commit a400a79321
1 changed files with 3 additions and 1 deletions
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4
fs/namespace.c
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@@ -2401,8 +2401,10 @@ static int do_new_mount(struct path *path, const char *fstype, int flags,
mnt_flags |= MNT_NODEV | MNT_LOCK_NODEV;
}
if (type->fs_flags & FS_USERNS_VISIBLE) {
if (!fs_fully_visible(type, &mnt_flags))
if (!fs_fully_visible(type, &mnt_flags)) {
put_filesystem(type);
return -EPERM;
}
}
}