From 7f5b160daddeaa55e441aca16010fab8299dfe9e Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Thu, 27 Dec 2012 20:27:04 -0600 Subject: [PATCH] libceph: fix protocol feature mismatch failure path We should not set con->state to CLOSED here; that happens in ceph_fault() in the caller, where it first asserts that the state is not yet CLOSED. Avoids a BUG when the features don't match. Since the fail_protocol() has become a trivial wrapper, replace calls to it with direct calls to reset_connection(). Signed-off-by: Sage Weil Reviewed-by: Alex Elder (cherry picked from commit 0fa6ebc600bc8e830551aee47a0e929e818a1868) Signed-off-by: Greg Kroah-Hartman --- net/ceph/messenger.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index 5ff743e..ba1037c 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -506,6 +506,7 @@ static void reset_connection(struct ceph_connection *con) { /* reset connection, out_queue, msg_ and connect_seq */ /* discard existing out_queue and msg_seq */ + dout("reset_connection %p\n", con); ceph_msg_remove_list(&con->out_queue); ceph_msg_remove_list(&con->out_sent); @@ -1502,13 +1503,6 @@ static int process_banner(struct ceph_connection *con) return 0; } -static void fail_protocol(struct ceph_connection *con) -{ - reset_connection(con); - WARN_ON(con->state != CON_STATE_NEGOTIATING); - con->state = CON_STATE_CLOSED; -} - static int process_connect(struct ceph_connection *con) { u64 sup_feat = con->msgr->supported_features; @@ -1526,7 +1520,7 @@ static int process_connect(struct ceph_connection *con) ceph_pr_addr(&con->peer_addr.in_addr), sup_feat, server_feat, server_feat & ~sup_feat); con->error_msg = "missing required protocol features"; - fail_protocol(con); + reset_connection(con); return -1; case CEPH_MSGR_TAG_BADPROTOVER: @@ -1537,7 +1531,7 @@ static int process_connect(struct ceph_connection *con) le32_to_cpu(con->out_connect.protocol_version), le32_to_cpu(con->in_reply.protocol_version)); con->error_msg = "protocol version mismatch"; - fail_protocol(con); + reset_connection(con); return -1; case CEPH_MSGR_TAG_BADAUTHORIZER: @@ -1627,7 +1621,7 @@ static int process_connect(struct ceph_connection *con) ceph_pr_addr(&con->peer_addr.in_addr), req_feat, server_feat, req_feat & ~server_feat); con->error_msg = "missing required protocol features"; - fail_protocol(con); + reset_connection(con); return -1; } -- 2.7.4