From: Xiubo Li xiubli@redhat.com
[ Upstream commit a7caa88f8b72c136f9a401f498471b8a8e35370d ]
If the ceph_mdsc_init() fails, it will free the mdsc already.
Reported-by: syzbot+b57f46d8d6ea51960b8c@syzkaller.appspotmail.com Signed-off-by: Xiubo Li xiubli@redhat.com Reviewed-by: Jeff Layton jlayton@kernel.org Signed-off-by: Ilya Dryomov idryomov@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ceph/mds_client.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 95272ae36b058..e32935b68d0a4 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -4337,7 +4337,6 @@ int ceph_mdsc_init(struct ceph_fs_client *fsc) return -ENOMEM; }
- fsc->mdsc = mdsc; init_completion(&mdsc->safe_umount_waiters); init_waitqueue_head(&mdsc->session_close_wq); INIT_LIST_HEAD(&mdsc->waiting_for_map); @@ -4390,6 +4389,8 @@ int ceph_mdsc_init(struct ceph_fs_client *fsc)
strscpy(mdsc->nodename, utsname()->nodename, sizeof(mdsc->nodename)); + + fsc->mdsc = mdsc; return 0; }