Bug 1188056
| Summary: | [abrt] WARNING: CPU: 3 PID: 2451 at kernel/sched/core.c:7300 __might_sleep+0xbd/0xd0() | ||||||
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| Product: | [Fedora] Fedora | Reporter: | dionney <dionney> | ||||
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> | ||||
| Status: | CLOSED EOL | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 21 | CC: | gansalmon, itamar, Jes.Sorensen, jonathan, kernel-maint, madhu.chinakonda, mchehab, pomidorabelisima, sweil | ||||
| Target Milestone: | --- | Flags: | kernel-team:
needinfo?
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| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Unspecified | ||||||
| URL: | https://retrace.fedoraproject.org/faf/reports/bthash/8f9f83ac7c298286f70fb3daa402b59637c25af2 | ||||||
| Whiteboard: | abrt_hash:77647feb36d116067a80b2049deab165655490bc | ||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2015-12-02 08:24:32 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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Description
dionney@hotmail.com
2015-02-01 21:13:35 UTC
Created attachment 986849 [details]
File: dmesg
I don't think that this is a file system problem. The problem is somewhere further down, amongst the scheduler, blk, and md: 1) wait_for_common_io() calls __wait_for_commom() with io_schedule_timeout() as its action 2) __wait_for_common()->do_wait_for_common() sets the current state and calls the action function. 3) io_schedule_timeout() calls blk_flush_plug(). 4) raid1_unplug() isn't called with from_schedule, so it calls bitmap_unplug() which waits. Dunno how the layers want to get out of this mess, but it might be easy to have io_schedule_timeout() call blk_schedule_flush_plug() so that unplug functions know to defer and schedule io instead of waiting themselves. I poked around a bit and didn't see upstream discussion of this stack in particular, but I might have missed something. *********** 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 21 kernel bugs. Fedora 21 has now been rebased to 3.19.5-200.fc21. 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 22, and are still experiencing this issue, please change the version to Fedora 22. If you experience different issues, please open a new bug report for those. https://bugzilla.kernel.org/show_bug.cgi?id=98191 https://bugzilla.redhat.com/show_bug.cgi?id=1220519 This message is a reminder that Fedora 21 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 21. 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 '21'. 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 21 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 21 changed to end-of-life (EOL) status on 2015-12-01. Fedora 21 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. |