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Problem report
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Resolution: Fixed
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Trivial
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None
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None
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Sprint 75 (Apr 2021), Sprint 76 (May 2021)
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0.125
The following scenario produces the following memory error:
1) create template with the host prototype (custom or inherit interface)
2) link template to a host
3) unlink template (do not use unlink and clear)
4) create autoregistration that adds host and links a new template
5) update host metadata
6) restart server and agent
result:
==00:00:00:13.273 28263== Use of uninitialised value of size 8 ==00:00:00:13.273 28263== at 0x77742DC: ____strtol_l_internal (strtol_l.c:292) ==00:00:00:13.273 28263== by 0x776F7AF: atoi (atoi.c:27) ==00:00:00:13.273 28263== by 0x3A1935: DBhost_prototypes_make (host.c:2627) ==00:00:00:13.273 28263== by 0x3A63EC: DBcopy_template_host_prototypes (host.c:4183) ==00:00:00:13.273 28263== by 0x3AAC1D: DBcopy_template_elements (host.c:5582) ==00:00:00:13.273 28263== by 0x27FF4A: op_template_add (operations.c:898) ==00:00:00:13.273 28263== by 0x2754D7: execute_operations (actions.c:2876) ==00:00:00:13.273 28263== by 0x27604D: process_actions (actions.c:3264) ==00:00:00:13.273 28263== by 0x27C159: flush_events (events.c:2087) ==00:00:00:13.273 28263== by 0x27DB79: zbx_process_events (events.c:2804) ==00:00:00:13.273 28263== by 0x39451C: DBregister_host_flush (db.c:1819) ==00:00:00:13.273 28263== by 0x393645: DBregister_host (db.c:1505) ==00:00:00:13.273 28263== Uninitialised value was created by a heap allocation ==00:00:00:13.273 28263== at 0x4C31B0F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so) ==00:00:00:13.273 28263== by 0x4EA04CF: ??? (in /usr/lib/x86_64-linux-gnu/libmysqlclient.so.20.3.20) ==00:00:00:13.273 28263== by 0x4E9E8AE: ??? (in /usr/lib/x86_64-linux-gnu/libmysqlclient.so.20.3.20) ==00:00:00:13.273 28263== by 0x4E672BB: ??? (in /usr/lib/x86_64-linux-gnu/libmysqlclient.so.20.3.20) ==00:00:00:13.273 28263== by 0x4E697D6: mysql_store_result (in /usr/lib/x86_64-linux-gnu/libmysqlclient.so.20.3.20) ==00:00:00:13.273 28263== by 0x3C53D5: zbx_db_vselect (db.c:1621) ==00:00:00:13.273 28263== by 0x391F47: DBselect (db.c:495) ==00:00:00:13.273 28263== by 0x3A178B: DBhost_prototypes_make (host.c:2608) ==00:00:00:13.273 28263== by 0x3A63EC: DBcopy_template_host_prototypes (host.c:4183) ==00:00:00:13.273 28263== by 0x3AAC1D: DBcopy_template_elements (host.c:5582) ==00:00:00:13.273 28263== by 0x27FF4A: op_template_add (operations.c:898) ==00:00:00:13.273 28263== by 0x2754D7: execute_operations (actions.c:2876)
the error seems to be caused by the following line 2627 in host.c:
[ZBXNEXT-6063] added custom interface support for host prototype
if (host_prototype->custom_interfaces != (unsigned char)atoi(row[6]))
host_prototype->flags |= ZBX_FLAG_HPLINK_UPDATE_CUSTOM_INTERFACES;
which is reading the row[6] but it is not selected in the sql select above:
"select i.itemid,h.hostid,h.host,h.name,h.status,h.discover"
- caused by
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ZBXNEXT-6292 Support of tags for configuration entities like hosts, items, triggers, graphs, ... (server)
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- Closed
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- Closed
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