From: Xiubo Li <xiubli@xxxxxxxxxx> If the ceph_mdsc_init() fails, it will free the mdsc already. Reported-by: syzbot+b57f46d8d6ea51960b8c@xxxxxxxxxxxxxxxxxxxxxxxxx URL: https://tracker.ceph.com/issues/46684 Signed-off-by: Xiubo Li <xiubli@xxxxxxxxxx> --- 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 af7221d1c610..590822fab767 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -4453,7 +4453,6 @@ int ceph_mdsc_init(struct ceph_fs_client *fsc) goto err_mdsc; } - fsc->mdsc = mdsc; init_completion(&mdsc->safe_umount_waiters); init_waitqueue_head(&mdsc->session_close_wq); INIT_LIST_HEAD(&mdsc->waiting_for_map); @@ -4508,6 +4507,8 @@ int ceph_mdsc_init(struct ceph_fs_client *fsc) strscpy(mdsc->nodename, utsname()->nodename, sizeof(mdsc->nodename)); + + fsc->mdsc = mdsc; return 0; err_mdsmap: -- 2.18.4
