Bug#1093849: Probably QEMU crashed
Hello Chris, On 27/04/2025 13:27, Chris Hofstaedtler wrote: * Chris Hofstaedtler [250418 15:18]: * Roland Clobus [250418 09:03]: in the log with QEMU-issues, I saw this line: `dmesg: read kernel buffer failed: Operation not permitted` [..] I've changed the sysctl now, and hope this is enough to make it work. We'll see in the next few days. Unfortunately dmesg access appears to be restricted by docker too. I still get this in the log: | dmesg: read kernel buffer failed: Operation not permitted Not sure how to work around that. Any ideas? I've logged a similar bug report upstream about the OOM detection: https://github.com/os-autoinst/os-autoinst/issues/2672 If you change the script 'check_qemu_oom' to use journalctl instead of dmesg (and add the worker to the group, as mentioned in the bug report), would you then be able to get a better output? With kind regards, Roland Clobus OpenPGP_signature.asc Description: OpenPGP digital signature
Bug#1093849: Probably QEMU crashed
* Chris Hofstaedtler [250418 15:18]: * Roland Clobus [250418 09:03]: in the log with QEMU-issues, I saw this line: `dmesg: read kernel buffer failed: Operation not permitted` [..] I've changed the sysctl now, and hope this is enough to make it work. We'll see in the next few days. Unfortunately dmesg access appears to be restricted by docker too. I still get this in the log: | dmesg: read kernel buffer failed: Operation not permitted Not sure how to work around that. Any ideas? Chris
Bug#1093849: Probably QEMU crashed
Hello Roland, * Roland Clobus [250418 09:03]: in the log with QEMU-issues, I saw this line: `dmesg: read kernel buffer failed: Operation not permitted` That is caused by the script 'check_qemu_oom', which calls 'dmesg'. On a regular system, 'dmesg' is not accessible for normal users, which I reported upstream [1]. Could you try to allow the isotovideo user to access dmesg, and see whether you get an out-of-memory message for QEMU? I've changed the sysctl now, and hope this is enough to make it work. We'll see in the next few days. Thanks, Chris
Bug#1093849: Probably QEMU crashed
Hello Chris, in the log with QEMU-issues, I saw this line: `dmesg: read kernel buffer failed: Operation not permitted` That is caused by the script 'check_qemu_oom', which calls 'dmesg'. On a regular system, 'dmesg' is not accessible for normal users, which I reported upstream [1]. Could you try to allow the isotovideo user to access dmesg, and see whether you get an out-of-memory message for QEMU? With kind regards, Roland Clobus [1] https://github.com/os-autoinst/os-autoinst/issues/2672 OpenPGP_signature.asc Description: OpenPGP digital signature
