diff options
| author | Amir Goldstein <amir73il@gmail.com> | 2019-12-06 08:33:36 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-17 20:39:21 +0100 |
| commit | 6890751cfea7d79d998b049647a8c49e2f288ed0 (patch) | |
| tree | 926ea6b28daa47e5cc7332db5c16b6282f81ea5c /fs/ocfs2 | |
| parent | 02072c31e11badb90cc5000fe240ddd2b538570c (diff) | |
ovl: relax WARN_ON() on rename to self
commit 6889ee5a53b8d969aa542047f5ac8acdc0e79a91 upstream.
In ovl_rename(), if new upper is hardlinked to old upper underneath
overlayfs before upper dirs are locked, user will get an ESTALE error
and a WARN_ON will be printed.
Changes to underlying layers while overlayfs is mounted may result in
unexpected behavior, but it shouldn't crash the kernel and it shouldn't
trigger WARN_ON() either, so relax this WARN_ON().
Reported-by: syzbot+bb1836a212e69f8e201a@syzkaller.appspotmail.com
Fixes: 804032fabb3b ("ovl: don't check rename to self")
Cc: <stable@vger.kernel.org> # v4.9+
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ocfs2')
0 files changed, 0 insertions, 0 deletions