This patch fixes the rolling upgrade issue from openais whitetank to
corosync 1.3. The problem is the length of the array
cpg_exec_service[]/cpg_exec_engine[] is different in the two version.
In openais whitetank:
static struct openais_exec_handler cpg_exec_service[] =
{
{ /* 0 */
.exec_handler_fn = message_handler_req_exec_cpg_procjoin,
.exec_endian_convert_fn = exec_cpg_procjoin_endian_convert
},
{ /* 1 */
.exec_handler_fn =
message_handler_req_exec_cpg_procleave,
.exec_endian_convert_fn = exec_cpg_procjoin_endian_convert
},
{ /* 2 */
.exec_handler_fn = message_handler_req_exec_cpg_joinlist,
.exec_endian_convert_fn = exec_cpg_joinlist_endian_convert
},
{ /* 3 */
.exec_handler_fn = message_handler_req_exec_cpg_mcast,
.exec_endian_convert_fn = exec_cpg_mcast_endian_convert
},
{ /* 4 */
.exec_handler_fn = message_handler_req_exec_cpg_downlist,
.exec_endian_convert_fn = exec_cpg_downlist_endian_convert
},
};
In corosync:
static struct corosync_exec_handler cpg_exec_engine[] =
{
{ /* 0 */
.exec_handler_fn = message_handler_req_exec_cpg_procjoin,
.exec_endian_convert_fn = exec_cpg_procjoin_endian_convert
},
{ /* 1 */
.exec_handler_fn =
message_handler_req_exec_cpg_procleave,
.exec_endian_convert_fn = exec_cpg_procjoin_endian_convert
},
{ /* 2 */
.exec_handler_fn = message_handler_req_exec_cpg_joinlist,
.exec_endian_convert_fn = exec_cpg_joinlist_endian_convert
},
{ /* 3 */
.exec_handler_fn = message_handler_req_exec_cpg_mcast,
.exec_endian_convert_fn = exec_cpg_mcast_endian_convert
},
{ /* 4 */
.exec_handler_fn =
message_handler_req_exec_cpg_downlist_old,
.exec_endian_convert_fn = exec_cpg_downlist_endian_convert_old
},
{ /* 5 */
.exec_handler_fn = message_handler_req_exec_cpg_downlist,
.exec_endian_convert_fn = exec_cpg_downlist_endian_convert
},
};
So the "old" node (with openais whitetank) will get a NULL pointer
when it recevies the message from the "new" node (with corosync 1.3)
and then coredump.
Signed-off-by: Jiaju Zhang <jjzh...@suse.de>
---
Index: openais/exec/main.c
===================================================================
--- openais.orig/exec/main.c
+++ openais/exec/main.c
@@ -403,8 +403,9 @@ static void deliver_fn (
(header);
}
- ais_service[service]->exec_service[fn_id].exec_handler_fn
- (header, nodeid);
+ if (ais_service[service]->exec_service[fn_id].exec_handler_fn)
+ ais_service[service]->exec_service[fn_id].exec_handler_fn
+ (header, nodeid);
serialize_mutex_unlock ();
}
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