|Summary:||Suspend broken: "Freezing of tasks failed..."|
|Product:||[Fedora] Fedora||Reporter:||Paul DeStefano <paul.destefano-redhat2>|
|Component:||kernel||Assignee:||Kernel Maintainer List <kernel-maint>|
|Status:||CLOSED CURRENTRELEASE||QA Contact:||Fedora Extras Quality Assurance <extras-qa>|
|Version:||27||CC:||airlied, bskeggs, ewk, hdegoede, ichavero, itamar, jarodwilson, jglisse, john.j5live, jonathan, josef, kernel-maint, labbott, linville, mchehab, mjg59, steved|
|Fixed In Version:||Doc Type:||If docs needed, set a value|
|Doc Text:||Story Points:||---|
|Last Closed:||2018-04-10 14:53:38 UTC||Type:||Bug|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
|Cloudforms Team:||---||Target Upstream Version:|
Description Paul DeStefano 2018-04-09 16:44:15 UTC
Description of problem: After upgrade to 4.15.14 (from 4.15.14), suspend is broken on Acer ES1-111 [41935.057157] Freezing user space processes ... (elapsed 0.005 seconds) done. [41935.062563] OOM killer disabled. [41935.062565] Freezing remaining freezable tasks ... [41955.080036] Freezing of tasks failed after 20.009 seconds (0 tasks refusing to freeze, wq_b usy=1): [41955.080052] Showing busy workqueues and worker pools: [41955.080061] workqueue pm: flags=0x4 [41955.080067] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=0/0 [41955.080090] delayed: pm_runtime_work [41955.080109] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=0/0 [41955.080129] delayed: pm_runtime_work, pm_runtime_work [41955.080152] workqueue writeback: flags=0x4e [41955.080156] pwq 8: cpus=0-3 flags=0x4 nice=0 active=0/0 [41955.080173] delayed: wb_workfn, wb_workfn [41955.080198] workqueue usb_hub_wq: flags=0x4 [41955.080203] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/0 [41955.080221] in-flight: 90:hub_event hub_event [41955.080261] pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=0s workers=5 idle: 18688 16646 24286 18457 [41955.080571] Restarting kernel threads ... done. [41955.081340] OOM killer enabled. [41955.081344] Restarting tasks ... done. Version-Release number of selected component (if applicable): kernel-4.15.14-300.fc27.x86_64 How reproducible: Always since 4.15.14 Steps to Reproduce: 1. Boot 2. Login to desktop 3. Fn-F4 or Session Menu > Suspend Actual results: System hangs for 20 seconds, then recovers. Shows errors in bug description Expected results: Should suspend. Never had this problem before. Additional info:
Comment 1 Paul DeStefano 2018-04-09 21:20:00 UTC
Sorry, I meant upgrade from 4.15.13 to 4.15.14. So, this bug was introduced in kernel 4.15.14 exactly.
Comment 2 Laura Abbott 2018-04-09 22:35:13 UTC
Can you see if 4.15.16 works https://koji.fedoraproject.org/koji/buildinfo?buildID=1067740 (I'll be filing this in bodhi shortly) If that doesn't work, you can try a kernel bisect
Comment 3 Paul DeStefano 2018-04-10 03:36:09 UTC
Yes, I can do that! Thanks. Regarding a bisect, I completely understand how that would help. But, "try a kernel bisect" isn't enough to go on. I link to Fedora instructions would be really helpful. I've built many kernels, but that was 20 years ago. It was grub 0.99 era. A lot has changed. Could you at least link to some official Fedora documentation for building one's own kernel and booting it? I found a page on fedbisect, which is good, but I've forgotten some of these other things. To Fedora's credit, I stopped practicing these skills because in the last 15 years, I've never had serious kernel bugs persist for more than a few kernel updates.
Comment 4 Paul DeStefano 2018-04-10 04:04:32 UTC
Success! 4.15.16 works and does not have any problems with suspend for me on my system. Thank you, Laura.
Comment 5 Laura Abbott 2018-04-10 14:53:38 UTC
Thanks for letting us know.