Bug 1314697
| Summary: | Kernel 4.4.3-300.fc23.x86_64 is not stable inside a KVM VM | ||||||
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| Product: | [Fedora] Fedora | Reporter: | Gerhard Wiesinger <redhat> | ||||
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> | ||||
| Status: | CLOSED EOL | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | urgent | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 24 | CC: | gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, mchehab, redhat | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2017-08-08 13:06:06 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
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Description
Gerhard Wiesinger
2016-03-04 09:37:20 UTC
Same for 4.4.4-301.fc23.x86_64 Kernel seems not to be dead at all (e.g. ping works) at least in that crash Same for 4.4.5-300.fc23.x86_64 Created attachment 1138791 [details]
Kernel Panic
Had also a kernel panic
Seems to be a problem of the OOM killer: Addressed in kernel 4.6: http://kernelnewbies.org/LinuxChanges#head-e7703fdbdd0f2bba4a0492b6e07ac1598c193de2 http://kernelnewbies.org/LinuxChanges I modified all my VMs with the following settings: vm.swappiness=10 vm.overcommit_memory=2 vm.overcommit_ratio=80 vm.dirty_ratio=15 vm.dirty_background_ratio=3 Works now stable, I only had once a problem, that a process was killed by OOM (but no kernel crash). Especially the previous setting vm.swappiness=0 has problems in low memory situations. References: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Performance_Tuning_Guide/s-memory-tunables.html https://www.percona.com/blog/2014/04/28/oom-relation-vm-swappiness0-new-kernel/ *********** MASS BUG UPDATE ************** We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 23 kernel bugs. Fedora 23 has now been rebased to 4.7.4-100.fc23. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 24 or 25, and are still experiencing this issue, please change the version to Fedora 24 or 25. If you experience different issues, please open a new bug report for those. Same with 4.7.4 Same with: 4.9.0-0.rc8.git2.1.fc26.x86_64 For reference: That commit might help mm: try to exhaust highatomic reserve before the OOM https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/?id=04c8716f7b0075def05dc05646e2408f318167d2 *********** MASS BUG UPDATE ************** We apologize for the inconvenience. There are a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 24 kernel bugs. Fedora 25 has now been rebased to 4.10.9-100.fc24. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 26, and are still experiencing this issue, please change the version to Fedora 26. If you experience different issues, please open a new bug report for those. Although getting better, still a problem with: 4.11.0-0.rc6.git0.1.fc26.x86_64 Seems to be a memory leak in the kernel or fs, or a problem in the mm. This message is a reminder that Fedora 24 is nearing its end of life. Approximately 2 (two) weeks from now Fedora will stop maintaining and issuing updates for Fedora 24. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '24'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 24 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. Fedora 24 changed to end-of-life (EOL) status on 2017-08-08. Fedora 24 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed. |