Critical - P2 file "mongoc-cluster.c"
function "_mongoc_cluster_run_ismaster"
721 sd = _mongoc_stream_run_ismaster (
722 cluster, node->stream, node->connection_address, server_id);
723
724 if (sd->type == MONGOC_SERVER_UNKNOWN) {
This code stores some value in the variable "sd", and uses "sd->type" in the if statement.
But, when "sd" is NULL, segmentation fault occurred at the if statement.
At v1.9.3, some decisions are added to the function "_mongoc_stream_run_ismaster",
and the function returns NULL when it violates the condition.
These decisions are not implemented at v1.8.2, so this problem not happened at v1.8.2.
back trace log:
#0 0x00007f145c7a7e22 in _mongoc_cluster_run_ismaster (cluster=0x238b318,
node=0x23ab1c0, server_id=1, error=0x7ffffc692480)
at src/mongoc/mongoc-cluster.c:724
#1 0x00007f145c7a9923 in _mongoc_cluster_add_node (cluster=0x238b318,
server_id=1, error=0x7ffffc692480) at src/mongoc/mongoc-cluster.c:1489
#2 0x00007f145c7aa2c5 in mongoc_cluster_fetch_stream_pooled (
cluster=0x238b318, server_id=1, reconnect_ok=true, error=0x7ffffc692480)
at src/mongoc/mongoc-cluster.c:1834
#3 0x00007f145c7a9c0d in _mongoc_cluster_stream_for_server (
cluster=0x238b318, server_id=1, reconnect_ok=true, error=0x7ffffc692480)
at src/mongoc/mongoc-cluster.c:1601
#4 0x00007f145c7aa627 in _mongoc_cluster_stream_for_optype (
cluster=0x238b318, optype=MONGOC_SS_READ, read_prefs=0x0,
error=0x7ffffc692480) at src/mongoc/mongoc-cluster.c:1981
#5 0x00007f145c7aa65e in mongoc_cluster_stream_for_reads (cluster=0x238b318,
read_prefs=0x0, error=0x7ffffc692480) at src/mongoc/mongoc-cluster.c:2011
#6 0x00007f145c7a3771 in _mongoc_client_command_with_opts (client=0x238b310,
db_name=0x23aaa88 "my_db", command=0x7ffffc692300,
mode=MONGOC_CMD_READ, opts=0x0, flags=MONGOC_QUERY_NONE,
default_prefs=0x0, default_rc=0x0, default_wc=0x0, reply=0x7ffffc692280,
error=0x7ffffc692480) at src/mongoc/mongoc-client.c:1778
#7 0x00007f145c7baa24 in mongoc_database_command_simple (database=0x23aaa80,
command=0x7ffffc692300, read_prefs=0x0, reply=0x7ffffc692280,
error=0x7ffffc692480) at src/mongoc/mongoc-database.c:214
- causes
-
CDRIVER-2609 Empty error after server removed from topology
-
- Closed
-
- is caused by
-
CDRIVER-2192 Implement Driver Sessions API
-
- Closed
-