Commit 74c9e6bf authored Sep 28, 2018 by Yan, Zheng Committed by Ilya Dryomov Oct 22, 2018

ceph: check if LOOKUPNAME request was aborted when filling trace



d_lookup()/d_alloc() require parent inode locked. Parent inode is
not locked if request is aborted.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

parent c58f450b

fs/ceph/inode.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -1200,7 +1200,9 @@ int ceph_fill_trace(struct super_block sb, struct ceph_mds_request req)
		WARN_ON_ONCE(1);
		}

		if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME) {
		if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME &&
		test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) &&
		!test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) {
		struct qstr dname;
		struct dentry dn, parent;

Admin message