From: "Yan, Zheng" <[email protected]> req->r_locked_dir is NULL if the request was created by open_root_dentry(). ceph_fill_trace() lacks check for this case. It causes oops when mounting cephfs with non-existing path.
Signed-off-by: Yan, Zheng <[email protected]> --- fs/ceph/inode.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 9fff9f3..40e2ef1 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -992,6 +992,13 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, if (rinfo->head->is_dentry) { struct inode *dir = req->r_locked_dir; + /* + * req->r_locked_dir is null if the request was created + * by open_root_dentry() + */ + if (!dir) + return le32_to_cpu(rinfo->head->result); + err = fill_inode(dir, &rinfo->diri, rinfo->dirfrag, session, req->r_request_started, -1, &req->r_caps_reservation); -- 1.7.11.2 -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
