From: Luis Henriques lhenriques@suse.de
[ Upstream commit cdb330f4b41ab55feb35487729e883c9e08b8a54 ]
If MDSs aren't available while mounting a filesystem, the session state will transition from SESSION_OPENING to SESSION_CLOSING. And in that scenario check_session_state() will be called from delayed_work() and trigger this WARN.
Avoid this by only WARNing after a session has already been established (i.e., the s_ttl will be different from 0).
Fixes: 62575e270f66 ("ceph: check session state after bumping session->s_seq") Signed-off-by: Luis Henriques lhenriques@suse.de 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 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index d560752b764d..6b00f1d7c8e7 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -4401,7 +4401,7 @@ bool check_session_state(struct ceph_mds_session *s) break; case CEPH_MDS_SESSION_CLOSING: /* Should never reach this when we're unmounting */ - WARN_ON_ONCE(true); + WARN_ON_ONCE(s->s_ttl); fallthrough; case CEPH_MDS_SESSION_NEW: case CEPH_MDS_SESSION_RESTARTING: