Team A
[ZBX-15607] Zombie processes can occur when signalling agent during metric execution Created: 2019 Feb 06 Updated: 2024 Apr 10 Resolved: 2019 Mar 02 |
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| Status: | Closed |
| Project: | ZABBIX BUGS AND ISSUES |
| Component/s: | Agent (G) |
| Affects Version/s: | 3.0.25, 4.0.4, 4.2.0alpha3 |
| Fix Version/s: | 4.0.6rc1, 4.2.0beta2, 4.2 (plan) |
| Type: | Problem report | Priority: | Trivial |
| Reporter: | Vladislavs Sokurenko | Assignee: | Andrejs Kozlovs |
| Resolution: | Fixed | Votes: | 0 |
| Labels: | zombie | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Team: | Team A |
| Sprint: | Sprint 49 (Feb 2019) |
| Story Points: | 0.5 |
| Description |
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Following patch to reproduce the issue which is otherwise hard to catch Index: src/libs/zbxsysinfo/sysinfo.c =================================================================== --- src/libs/zbxsysinfo/sysinfo.c (revision 89520) +++ src/libs/zbxsysinfo/sysinfo.c (working copy) @@ -1273,6 +1273,7 @@ ret = write_all(fds[1], data, data_offset); + sleep(30); zbx_free(data); free_result(result); Send signal when metric is being executed: ./sbin/zabbix_agentd -R log_level_decrease Result(from several times): 75016 pts/1 S+ 0:00 ./sbin/zabbix_agentd -c /etc/zabbix/zabbix_agentd.conf --foreground 75017 pts/1 S+ 0:00 ./sbin/zabbix_agentd: collector [idle 1 sec] 75018 pts/1 S+ 0:00 ./sbin/zabbix_agentd: listener #1 [waiting for connection] 75019 pts/1 S+ 0:00 ./sbin/zabbix_agentd: listener #2 [waiting for connection] 75020 pts/1 S+ 0:00 ./sbin/zabbix_agentd: listener #3 [waiting for connection] 75021 pts/1 S+ 0:00 ./sbin/zabbix_agentd: active checks #1 [idle 1 sec] 75033 pts/1 Z+ 0:00 [zabbix_agentd] <defunct> 75151 pts/1 Z+ 0:00 [zabbix_agentd] <defunct> 75315 pts/1 Z+ 0:00 [zabbix_agentd] <defunct> 75705 pts/1 Z+ 0:00 [zabbix_agentd] <defunct> 75992 pts/1 Z+ 0:00 [zabbix_agentd] <defunct> 76065 pts/1 S+ 0:00 ./sbin/zabbix_agentd: listener #3 [processing request] 76238 pts/2 S+ 0:00 grep --color=auto zabbix_agentd ==65293== at 0x445C3E: zbx_execute_threaded_metric (sysinfo.c:1326) ==65293== by 0x466132: VFS_FS_SIZE (diskspace.c:124) ==65293== by 0x440921: process (sysinfo.c:632) ==65293== by 0x435D9A: process_listener (listener.c:57) ==65293== by 0x43641B: listener_thread (listener.c:145) ==65293== by 0x49D7AE: zbx_thread_start (threads.c:132) ==65293== by 0x411A0C: MAIN_ZABBIX_ENTRY (zabbix_agentd.c:1046) ==65293== by 0x4A0039: daemon_start (daemon.c:392) ==65293== by 0x411F7E: main (zabbix_agentd.c:1270) ==65293== Uninitialised value was created by a stack allocation ==65293== at 0x4451E3: zbx_execute_threaded_metric (sysinfo.c:1234) ==65293== ==65293== Conditional jump or move depends on uninitialised value(s) ==65293== at 0x445DA2: zbx_execute_threaded_metric (sysinfo.c:1333) ==65293== by 0x466132: VFS_FS_SIZE (diskspace.c:124) ==65293== by 0x440921: process (sysinfo.c:632) ==65293== by 0x435D9A: process_listener (listener.c:57) ==65293== by 0x43641B: listener_thread (listener.c:145) ==65293== by 0x49D7AE: zbx_thread_start (threads.c:132) ==65293== by 0x411A0C: MAIN_ZABBIX_ENTRY (zabbix_agentd.c:1046) ==65293== by 0x4A0039: daemon_start (daemon.c:392) ==65293== by 0x411F7E: main (zabbix_agentd.c:1270) ==65293== Uninitialised value was created by a stack allocation ==65293== at 0x4451E3: zbx_execute_threaded_metric (sysinfo.c:1234) Expected: |
| Comments |
| Comment by Andrejs Kozlovs [ 2019 Feb 28 ] |
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Fixed in:
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