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syslog-ng-4.8.1 gives seek errors on /dev/kmsg
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jagdpanther
l33t
l33t


Joined: 22 Nov 2003
Posts: 764

PostPosted: Sat Nov 30, 2024 6:59 pm    Post subject: syslog-ng-4.8.1 gives seek errors on /dev/kmsg Reply with quote

After updating to syslog-ng-4.8.1 today I received lots of messages like the following. Usually immediately after syslog-ng added a line to /var/log/messages:

Code:
syslog-ng[2572]: Error invoking seek on file; filename='/dev/kmsg', error='Invalid argument (22)'


Here are the details:
Rebooting does not affect the issue.
My workaround is to downgrade. (emerge =app-admin/syslog-ng-4.6.0 -- The /dev/kmsg error messages are gone.)

When using syslog-ng-4.8.1, some message lines in /var/log/messages are followed immediately by the /dev/kmsg seek error message. Here are some examples:

Code:

Nov 30 08:58:24 runner-public kernel: IPv4: martian source 192.168.7.7 from 34.107.244.93, on dev eno2
Nov 30 08:58:24 runner-public kernel: ll header: 00000000: 08 bf b8 6c 31 7b a4 43 8c 40 69 00 08 00
Nov 30 08:58:24 runner-public syslog-ng[1054374]: Error invoking seek on file; filename='/dev/kmsg', error='Invalid argument (22)'
...
Nov 30 09:13:01 runner-public kernel: inRules: IN=eno2 OUT= MAC=ff:ff:ff:ff:ff:ff:70:a7:41:ed:f4:b9:19:00 SRC=192.168.0.100 DST=255.255.255.255 LEN=32 TOS=0x00 PREC=0x00 TTL=64 ID=43838 DF PROTO=UDP SPT=51012 DPT=10001 LEN=12
Nov 30 09:13:01 runner-public syslog-ng[2572]: Error invoking seek on file; filename='/dev/kmsg', error='Invalid argument (22)'
Nov 30 09:13:12 runner-public kernel: inRules: IN=eno2 OUT= MAC=ff:ff:ff:ff:ff:ff:70:a7:41:ed:f4:b9:19:00 SRC=192.168.0.100 DST=255.255.255.255 LEN=32 TOS=0x00 PREC=0x00 TTL=64 ID=44171 DF PROTO=UDP SPT=51012 DPT=10001 LEN=12
Nov 30 09:13:12 runner-public syslog-ng[2572]: Error invoking seek on file; filename='/dev/kmsg', error='Invalid argument (22)'
...
Nov 30 09:24:06 runner-public polkitd[3610]: Started polkitd version 123
Nov 30 09:24:06 runner-public kernel: nvidia_uvm: module uses symbols nvUvmInterfaceDisableAccessCntr from proprietary module nvidia, inheriting taint.
Nov 30 09:24:06 runner-public syslog-ng[2572]: Error invoking seek on file; filename='/dev/kmsg', error='Invalid argument (22)'
Nov 30 09:24:06 runner-public kernel: nvidia-uvm: Loaded the UVM driver, major device number 243.
Nov 30 09:24:06 runner-public syslog-ng[2572]: Error invoking seek on file; filename='/dev/kmsg', error='Invalid argument (22)'


Note: "inRules" above is from my ipTables configuration.

Any ideas on this /dev/kmsg seek error?
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acmondor
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n00b


Joined: 08 Aug 2014
Posts: 64
Location: Canadian Prairies

PostPosted: Sun Dec 01, 2024 5:41 pm    Post subject: Reply with quote

There is a bug open for that: https://bugs.gentoo.org/945490

Like you I just went back to 4.6.0 for now. Not because of the above mentioned bug, which has a work around, but because the upgrade to 4.8.1 clobbered my /etc/syslog-ng/syslog-ng.conf file for some reason that I haven't figured out yet.
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