[PATCH 3/4] lockd: fix file selection in nlmsvc_cancel_blocked
From: Jeff Layton <jlayton@kernel.org>
Date: 2022-11-11 19:36:47
Subsystem:
filesystems (vfs and infrastructure), kernel nfsd, sunrpc, and lockd servers, nfs, sunrpc, and lockd clients, the rest · Maintainers:
Alexander Viro, Christian Brauner, Chuck Lever, Jeff Layton, Trond Myklebust, Anna Schumaker, Linus Torvalds
We currently do a lock_to_openmode call based on the arguments from the NLM_UNLOCK call, but that will always set the fl_type of the lock to F_UNLCK, the the O_RDONLY descriptor is always chosen. Fix it to use the file_lock from the block instead. Signed-off-by: Jeff Layton <jlayton@kernel.org> --- fs/lockd/svclock.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c
index 9eae99e08e69..4e30f3c50970 100644
--- a/fs/lockd/svclock.c
+++ b/fs/lockd/svclock.c@@ -699,9 +699,10 @@ nlmsvc_cancel_blocked(struct net *net, struct nlm_file *file, struct nlm_lock *l block = nlmsvc_lookup_block(file, lock); mutex_unlock(&file->f_mutex); if (block != NULL) { - mode = lock_to_openmode(&lock->fl); - vfs_cancel_lock(block->b_file->f_file[mode], - &block->b_call->a_args.lock.fl); + struct file_lock *fl = &block->b_call->a_args.lock.fl; + + mode = lock_to_openmode(fl); + vfs_cancel_lock(block->b_file->f_file[mode], fl); status = nlmsvc_unlink_block(block); nlmsvc_release_block(block); }
--
2.38.1