Plex segfault on Synology DSM 6

Plex Media Server NAS & Devices
1

Server Version#: 1.24.5.5173
Player Version#: Any

Synology DSM Version: DSM 6.2.4-25556 Update 2

Plex server got segfault frequently since the last month.

Here are some logs for the reference.

/var/log/messages

2021-11-08T16:32:59+08:00 kernel: [6104545.141150] Plex Media Serv[13497]: segfault at 0 ip 00007f07478e9742 sp 00007f07416dd720 error 4 in Plex Media Server[7f0747761000+bae000]
2021-11-08T16:32:59+08:00 coredump: Process Plex[Media] dumped core on signal [Serv].

core file
@Plex.core.gz (18.4 MB)

log file
Plex Media Server Logs_2021-11-09_00-01-17.zip (665.0 KB)

2

Please enable DEBUG logging again so I can see what’s leading up to these.

Oct 30, 2021 11:37:15.570 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 11:37:30.622 [0x7f0742231b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 11:37:45.680 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 12:41:30.026 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 12:41:45.366 [0x7f0742231b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 12:42:00.477 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 12:42:15.553 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 12:42:30.606 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 12:42:45.663 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 13:04:41.275 [0x7f074331bb38] WARN - Sync: local sync directory "/volume1/Plex/Library/Application Support/Plex Media Server/Cache/Transcode/Sync+" does not exist
Oct 30, 2021 13:46:30.335 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 13:46:45.620 [0x7f0742231b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 13:47:00.729 [0x7f0742231b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 13:47:15.969 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 13:47:31.021 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 13:47:46.081 [0x7f0742231b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 14:51:30.415 [0x7f0742231b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 14:51:45.609 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 14:52:00.790 [0x7f0742231b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 14:52:15.965 [0x7f0742231b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 14:52:31.065 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 14:52:46.160 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 15:56:30.502 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 15:56:45.680 [0x7f0742231b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 15:57:00.719 [0x7f0742231b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 15:57:15.761 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 15:57:30.839 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 15:57:46.126 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 17:01:30.520 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 17:01:45.853 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 17:02:00.906 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 17:02:15.966 [0x7f0742231b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 17:02:31.021 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 17:02:46.075 [0x7f0742254b38] ERROR - [EventSourceClient/mediaserver] Retrying in 15 seconds.
Oct 30, 2021 17:50:42.092 [0x7f07414cbb38] INFO - AutoUpdate: no updates available
Oct 30, 2021 17:50:43.276 [0x7f07413c6b38] WARN - QueryParser: Invalid field 'sectionID' found, ignoring.
Oct 30, 2021 17:50:43.276 [0x7f07413c6b38] WARN - QueryParser: Invalid field 'contentDirectoryID' found, ignoring.
Oct 30, 2021 17:50:43.276 [0x7f07413c6b38] WARN - QueryParser: Invalid field 'pinnedContentDirectoryID' found, ignoring.
Oct 30, 2021 17:50:43.283 [0x7f07414cbb38] WARN - QueryParser: Invalid field 'sectionID' found, ignoring.
Oct 30, 2021 17:50:43.283 [0x7f07414cbb38] WARN - QueryParser: Invalid field 'contentDirectoryID' found, ignoring.

Also please note that you are having a lot of internet connectivity issues.

3

@ChuckPa , here is the debug log for your reference.
Plex Media Server Logs_2021-12-03_00-06-39.zip (3.3 MB)

4

@mmxd

I see there was a crash but have no idea what it was since it uploaded to our collection system.

Can you give me an idea what you were doing ?

5

@ChuckPa

I did not do any things when PMS crashed. Actually I did not watch videos from PMS recently. Just checked the NAS log today and know it crashed on 12/02.

6

Does your DSM log have an entry for when it did ? (it should)

7

I did not see related logs when PMS crashed. Here are the logs I found in DSM.

/var/log/messages

2021-12-02T09:41:50+08:00 MMX_DS synoscgi_SYNO.Core.Package.Installation_1_install[7544]: resource_api.cpp:289 Release service-cfg for Plex Media Server when 0x0002 (done)
2021-12-02T09:41:53+08:00 MMX_DS synoscgi_SYNO.Core.Package.Installation_1_install[7697]: resource_api.cpp:190 Acquire service-cfg for Plex Media Server when 0x0002 (done)
2021-12-02T09:42:34+08:00 MMX_DS synoscgi_SYNO.Core.Package_2_list[10962]: list.cpp:329 SYNO.Core.Package.list rollback to direct call
2021-12-02T09:42:34+08:00 MMX_DS synoscgi_SYNO.Core.Package_2_list[11394]: list.cpp:329 SYNO.Core.Package.list rollback to direct call
2021-12-02T19:59:20+08:00 MMX_DS kernel: [8189746.266542] Plex Media Serv[15863]: segfault at 0 ip 00007f08f6555c5a sp 00007f08f0e12720 error 4 in Plex Media Server[7f08f63ce000+bb2000]
2021-12-02T19:59:20+08:00 MMX_DS coredump: Process Plex[Media] dumped core on signal [Serv].
2021-12-02T20:51:51+08:00 MMX_DS builtin-libhwcontrol-syno_disk_db_update: disk/disk_db_update_util.c:319 Success download temperature with version 169 and release 0.

/var/log/kern.log

2021-11-25T07:05:13+08:00 MMX_DS kernel: [7538743.142045] CIFS VFS: SMB signature verification returned error = -13
2021-12-02T19:59:20+08:00 MMX_DS kernel: [8189746.266542] Plex Media Serv[15863]: segfault at 0 ip 00007f08f6555c5a sp 00007f08f0e12720 error 4 in Plex Media Server[7f08f63ce000+bb2000]
2021-12-03T00:02:11+08:00 MMX_DS kernel: [    0.000000] Linux version 3.10.105 (root@build2) (gcc version 4.9.3 20150311 (prerelease) (crosstool-NG 1.20.0) ) #25556 SMP Tue Aug 3 11:17:03 CST 2021

core file
@Plex.core.gz (13.7 MB)

8

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