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| author | Miklos Szeredi <mszeredi@redhat.com> | 2016-08-03 13:44:27 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-08-10 11:49:30 +0200 |
| commit | 8e510cd92199e863bd457f6b56ad85e00dfb3cb3 (patch) | |
| tree | 72e26cc11b0a252f8679253082d2ce19f3db3407 /Makefile | |
| parent | 33f9cff6ec2fbfcf0b40d4328d292c745185fdf4 (diff) | |
vfs: fix deadlock in file_remove_privs() on overlayfs
commit c1892c37769cf89c7e7ba57528ae2ccb5d153c9b upstream.
file_remove_privs() is called with inode lock on file_inode(), which
proceeds to calling notify_change() on file->f_path.dentry. Which triggers
the WARN_ON_ONCE(!inode_is_locked(inode)) in addition to deadlocking later
when ovl_setattr tries to lock the underlying inode again.
Fix this mess by not mixing the layers, but doing everything on underlying
dentry/inode.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes: 07a2daab49c5 ("ovl: Copy up underlying inode's ->i_mode to overlay inode")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Makefile')
0 files changed, 0 insertions, 0 deletions