Bug 1605167
| Summary: | warning on start-up taints kernel | ||||||||
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| Product: | [Fedora] Fedora | Reporter: | Erik Faye-Lund <kusmabite> | ||||||
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> | ||||||
| Status: | NEW --- | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||||
| Severity: | unspecified | Docs Contact: | |||||||
| Priority: | unspecified | ||||||||
| Version: | rawhide | CC: | airlied, bskeggs, ewk, hdegoede, ichavero, itamar, jarodwilson, jglisse, john.j5live, jonathan, josef, kernel-maint, linville, mchehab, mjg59, orion, steved, thomas.howard | ||||||
| Target Milestone: | --- | ||||||||
| Target Release: | --- | ||||||||
| Hardware: | x86_64 | ||||||||
| OS: | Linux | ||||||||
| Whiteboard: | |||||||||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |||||||
| Doc Text: | Story Points: | --- | |||||||
| Clone Of: | Environment: | ||||||||
| Last Closed: | 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: | |||||||||
| Attachments: |
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Description
Erik Faye-Lund
2018-07-20 10:58:33 UTC
On second thought, 7237 seconds, that's not right after boot. I guess I just assumed this happened right on boot because it usually blocks all ABRT-reports. I suppose this happens after doing some video-related task? I run qemu a lot, that might be related... Hmm, looks a bit like this is a case of the user-space being able to taint the kernel by bad input... but if so I wonder if this should have been picked up earlier (by the type-handler rather than v4l_fill_fmtdesc) and produced an error to usermode...? Another possible culprit, could be the type-handler overwriting the format through "arg"... Created attachment 1470565 [details]
verbose lsusb output for the problem camera
I am seeing this too on a Dell XPS 9370 laptop using Fedora 28, I think this is caused by the IR webcam used for Windows Hello facial recognition not providing a sensible pixelformat.
I am also unable to get any images out of the camera using any of the normal tools.
Created attachment 1470567 [details]
Output of "v4l2-ctl -d /dev/video2 --all --list-formats-ext"
I have also attached some details I got using v4l2-ctl
Assuming these details can be trusted, it looks like the camera should be able to output images at 340x340 at 60 frames a second. I presume these will be some form of greyscale images based on it being an infrared camera.
I seem to be seeing something similar on EL 8.2 This report has not received an update in over 90 days. If this issue is still relevant to you, please do not hesitate to update this report with any relevant details on recent investigative steps or changes and we will absolutely work to understand how to best move forward. Otherwise, this bug report will need to be closed in 30 days. No worries, however; should you need still assistance after the report is closed, please do not hesitate to create a new bug report referencing this report and with any new details on the matter. NOTE: This is an automated mass update. |