From dc32464a5fe4946fe1a4d8f8e29961dc411933c5 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 14 Sep 2023 21:55:29 -0400 Subject: [PATCH] ceph_wait_on_conflict_unlink(): grab reference before dropping ->d_lock Use of dget() after we'd dropped ->d_lock is too late - dentry might be gone by that point. Reviewed-by: Jeff Layton Signed-off-by: Al Viro --- fs/ceph/mds_client.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 615db14..293b931 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -861,8 +861,8 @@ int ceph_wait_on_conflict_unlink(struct dentry *dentry) if (!d_same_name(udentry, pdentry, &dname)) goto next; + found = dget_dlock(udentry); spin_unlock(&udentry->d_lock); - found = dget(udentry); break; next: spin_unlock(&udentry->d_lock); -- 2.7.4