diff options
| author | Jeff Layton <jlayton@kernel.org> | 2022-11-11 14:36:37 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-03-06 14:45:16 +0000 |
| commit | ccbf6efab8d37e3af007e83d7e7797f0ab2f3064 (patch) | |
| tree | 523551bb23d30e8418a5aa7232aa72c64df7abab | |
| parent | 8973a8f9b72dbafbd1083c220d975a0e7ec871d0 (diff) | |
| download | linux-ccbf6efab8d37e3af007e83d7e7797f0ab2f3064.tar.gz | |
lockd: ensure we use the correct file descriptor when unlocking
[ Upstream commit 69efce009f7df888e1fede3cb2913690eb829f52 ]
Shared locks are set on O_RDONLY descriptors and exclusive locks are set
on O_WRONLY ones. nlmsvc_unlock however calls vfs_lock_file twice, once
for each descriptor, but it doesn't reset fl_file. Ensure that it does.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/lockd/svclock.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c index 9c1aa75441e1cc..9eae99e08e6991 100644 --- a/fs/lockd/svclock.c +++ b/fs/lockd/svclock.c @@ -659,11 +659,13 @@ nlmsvc_unlock(struct net *net, struct nlm_file *file, struct nlm_lock *lock) nlmsvc_cancel_blocked(net, file, lock); lock->fl.fl_type = F_UNLCK; - if (file->f_file[O_RDONLY]) - error = vfs_lock_file(file->f_file[O_RDONLY], F_SETLK, + lock->fl.fl_file = file->f_file[O_RDONLY]; + if (lock->fl.fl_file) + error = vfs_lock_file(lock->fl.fl_file, F_SETLK, &lock->fl, NULL); - if (file->f_file[O_WRONLY]) - error = vfs_lock_file(file->f_file[O_WRONLY], F_SETLK, + lock->fl.fl_file = file->f_file[O_WRONLY]; + if (lock->fl.fl_file) + error |= vfs_lock_file(lock->fl.fl_file, F_SETLK, &lock->fl, NULL); return (error < 0)? nlm_lck_denied_nolocks : nlm_granted; |