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| author | Trond Myklebust <trond.myklebust@hammerspace.com> | 2022-11-06 14:02:39 -0500 |
|---|---|---|
| committer | Chuck Lever <cel@kernel.org> | 2022-12-10 11:01:11 -0500 |
| commit | 18ebd35b61b4693a0ddc270b6d4f18def232e770 (patch) | |
| tree | f38d927eb8a886e0539e965993668f23d45e852c /fs/lockd | |
| parent | d7064eaf688cfe454c50db9f59298463d80d403c (diff) | |
| download | linux-stable-18ebd35b61b4693a0ddc270b6d4f18def232e770.tar.gz linux-stable-18ebd35b61b4693a0ddc270b6d4f18def232e770.tar.bz2 linux-stable-18ebd35b61b4693a0ddc270b6d4f18def232e770.zip | |
lockd: set other missing fields when unlocking files
vfs_lock_file() expects the struct file_lock to be fully initialised by
the caller. Re-exported NFSv3 has been seen to Oops if the fl_file field
is NULL.
Fixes: aec158242b87 ("lockd: set fl_owner when unlocking files")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216582
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/lockd')
| -rw-r--r-- | fs/lockd/svcsubs.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/fs/lockd/svcsubs.c b/fs/lockd/svcsubs.c index e1c4617de771..3515f17eaf3f 100644 --- a/fs/lockd/svcsubs.c +++ b/fs/lockd/svcsubs.c @@ -176,7 +176,7 @@ nlm_delete_file(struct nlm_file *file) } } -static int nlm_unlock_files(struct nlm_file *file, fl_owner_t owner) +static int nlm_unlock_files(struct nlm_file *file, const struct file_lock *fl) { struct file_lock lock; @@ -184,12 +184,15 @@ static int nlm_unlock_files(struct nlm_file *file, fl_owner_t owner) lock.fl_type = F_UNLCK; lock.fl_start = 0; lock.fl_end = OFFSET_MAX; - lock.fl_owner = owner; - if (file->f_file[O_RDONLY] && - vfs_lock_file(file->f_file[O_RDONLY], F_SETLK, &lock, NULL)) + lock.fl_owner = fl->fl_owner; + lock.fl_pid = fl->fl_pid; + lock.fl_flags = FL_POSIX; + + lock.fl_file = file->f_file[O_RDONLY]; + if (lock.fl_file && vfs_lock_file(lock.fl_file, F_SETLK, &lock, NULL)) goto out_err; - if (file->f_file[O_WRONLY] && - vfs_lock_file(file->f_file[O_WRONLY], F_SETLK, &lock, NULL)) + lock.fl_file = file->f_file[O_WRONLY]; + if (lock.fl_file && vfs_lock_file(lock.fl_file, F_SETLK, &lock, NULL)) goto out_err; return 0; out_err: @@ -226,7 +229,7 @@ again: if (match(lockhost, host)) { spin_unlock(&flctx->flc_lock); - if (nlm_unlock_files(file, fl->fl_owner)) + if (nlm_unlock_files(file, fl)) return 1; goto again; } |