ceph: fix null pointer deref of r_osd in debug output
This causes an oops when debug output is enabled and we kick
an osd request with no current r_osd (sometime after an osd
failure). Check the pointer before dereferencing.
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/osd_client.c b/fs/ceph/osd_client.c
index dbe63db9..2210382 100644
--- a/fs/ceph/osd_client.c
+++ b/fs/ceph/osd_client.c
@@ -913,7 +913,7 @@
kick:
dout("kicking %p tid %llu osd%d\n", req, req->r_tid,
- req->r_osd->o_osd);
+ req->r_osd ? req->r_osd->o_osd : -1);
req->r_flags |= CEPH_OSD_FLAG_RETRY;
err = __send_request(osdc, req);
if (err) {