diff options
| author | Eric W. Biederman <ebiederm@xmission.com> | 2016-05-27 22:50:05 +0300 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2016-06-07 04:52:03 +0300 |
| commit | d71ed6c930ac7d8f88f3cef6624a7e826392d61f (patch) | |
| tree | 322444a9a4901a7c43dfea1fb5cd056306288eeb | |
| parent | 97c1df3e54e811aed484a036a798b4b25d002ecf (diff) | |
| download | linux-d71ed6c930ac7d8f88f3cef6624a7e826392d61f.tar.xz | |
mnt: fs_fully_visible test the proper mount for MNT_LOCKED
MNT_LOCKED implies on a child mount implies the child is locked to the
parent. So while looping through the children the children should be
tested (not their parent).
Typically an unshare of a mount namespace locks all mounts together
making both the parent and the slave as locked but there are a few
corner cases where other things work.
Cc: stable@vger.kernel.org
Fixes: ceeb0e5d39fc ("vfs: Ignore unlocked mounts in fs_fully_visible")
Reported-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
| -rw-r--r-- | fs/namespace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 9d45c8a3414f..a7ec92c051f5 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -3273,7 +3273,7 @@ static bool fs_fully_visible(struct file_system_type *type, int *new_mnt_flags) list_for_each_entry(child, &mnt->mnt_mounts, mnt_child) { struct inode *inode = child->mnt_mountpoint->d_inode; /* Only worry about locked mounts */ - if (!(mnt_flags & MNT_LOCKED)) + if (!(child->mnt.mnt_flags & MNT_LOCKED)) continue; /* Is the directory permanetly empty? */ if (!is_empty_dir_inode(inode)) |