* Re: BUG: workqueue lockup (4) [not found] <0000000000005764090577a27486@google.com> @ 2018-10-07 12:18 ` Dmitry Vyukov 2018-10-07 19:39 ` Alexandre Belloni 0 siblings, 1 reply; 4+ messages in thread From: Dmitry Vyukov @ 2018-10-07 12:18 UTC (permalink / raw) To: syzbot, a.zummo, alexandre.belloni, linux-rtc; +Cc: LKML, syzkaller-bugs On Sun, Oct 7, 2018 at 2:15 PM, syzbot <syzbot+08116743f8ad6f9a6de7@syzkaller.appspotmail.com> wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: c1d84a1b42ef Merge git://git.kernel.org/pub/scm/linux/kern.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=14c5f491400000 > kernel config: https://syzkaller.appspot.com/x/.config?x=c0af03fe452b65fb > dashboard link: https://syzkaller.appspot.com/bug?extid=08116743f8ad6f9a6de7 > compiler: gcc (GCC) 8.0.1 20180413 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14514a6e400000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1025ebb9400000 The reproducer seems to be all about rtc. So +rtc maintainers. > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+08116743f8ad6f9a6de7@syzkaller.appspotmail.com > > BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 204s! > Showing busy workqueues and worker pools: > workqueue events: flags=0x0 > pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=4/256 > in-flight: 14:rtc_timer_do_work > pending: vmstat_shepherd, cache_reap, check_corruption > workqueue events_power_efficient: flags=0x80 > pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 > pending: do_cache_clean > workqueue mm_percpu_wq: flags=0x8 > pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 > pending: vmstat_update > workqueue kacpi_notify: flags=0x0 > pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 > pending: acpi_os_execute_deferred > pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=204s workers=2 idle: 2683 > > > --- > This bug is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@googlegroups.com. > > syzbot will keep track of this bug report. See: > https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with > syzbot. > syzbot can test patches for this bug, for details see: > https://goo.gl/tpsmEJ#testing-patches > > -- > You received this message because you are subscribed to the Google Groups > "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to syzkaller-bugs+unsubscribe@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/syzkaller-bugs/0000000000005764090577a27486%40google.com. > For more options, visit https://groups.google.com/d/optout. ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: BUG: workqueue lockup (4) 2018-10-07 12:18 ` BUG: workqueue lockup (4) Dmitry Vyukov @ 2018-10-07 19:39 ` Alexandre Belloni 2019-06-10 23:49 ` [rtc] " Eric Biggers 0 siblings, 1 reply; 4+ messages in thread From: Alexandre Belloni @ 2018-10-07 19:39 UTC (permalink / raw) To: Dmitry Vyukov; +Cc: syzbot, a.zummo, linux-rtc, LKML, syzkaller-bugs Hi, On 07/10/2018 14:18:31+0200, Dmitry Vyukov wrote: > On Sun, Oct 7, 2018 at 2:15 PM, syzbot > <syzbot+08116743f8ad6f9a6de7@syzkaller.appspotmail.com> wrote: > > Hello, > > > > syzbot found the following crash on: > > > > HEAD commit: c1d84a1b42ef Merge git://git.kernel.org/pub/scm/linux/kern.. > > git tree: upstream > > console output: https://syzkaller.appspot.com/x/log.txt?x=14c5f491400000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=c0af03fe452b65fb > > dashboard link: https://syzkaller.appspot.com/bug?extid=08116743f8ad6f9a6de7 > > compiler: gcc (GCC) 8.0.1 20180413 (experimental) > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14514a6e400000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1025ebb9400000 > > The reproducer seems to be all about rtc. So +rtc maintainers. > It seems to be that bug: http://patchwork.ozlabs.org/patch/898552/ I'm pretty sure the fix is not correct though and didn't have the time to work on a proper fix. -- Alexandre Belloni, Bootlin Embedded Linux and Kernel engineering https://bootlin.com ^ permalink raw reply [flat|nested] 4+ messages in thread
* [rtc] Re: BUG: workqueue lockup (4) 2018-10-07 19:39 ` Alexandre Belloni @ 2019-06-10 23:49 ` Eric Biggers 2019-06-11 6:59 ` Alexandre Belloni 0 siblings, 1 reply; 4+ messages in thread From: Eric Biggers @ 2019-06-10 23:49 UTC (permalink / raw) To: Alessandro Zummo, Alexandre Belloni, Jiwei Sun, linux-rtc Cc: Dmitry Vyukov, syzbot, LKML, syzkaller-bugs On Sun, Oct 07, 2018 at 09:39:18PM +0200, Alexandre Belloni wrote: > Hi, > > On 07/10/2018 14:18:31+0200, Dmitry Vyukov wrote: > > On Sun, Oct 7, 2018 at 2:15 PM, syzbot > > <syzbot+08116743f8ad6f9a6de7@syzkaller.appspotmail.com> wrote: > > > Hello, > > > > > > syzbot found the following crash on: > > > > > > HEAD commit: c1d84a1b42ef Merge git://git.kernel.org/pub/scm/linux/kern.. > > > git tree: upstream > > > console output: https://syzkaller.appspot.com/x/log.txt?x=14c5f491400000 > > > kernel config: https://syzkaller.appspot.com/x/.config?x=c0af03fe452b65fb > > > dashboard link: https://syzkaller.appspot.com/bug?extid=08116743f8ad6f9a6de7 > > > compiler: gcc (GCC) 8.0.1 20180413 (experimental) > > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14514a6e400000 > > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1025ebb9400000 > > > > The reproducer seems to be all about rtc. So +rtc maintainers. > > > > It seems to be that bug: > http://patchwork.ozlabs.org/patch/898552/ > > I'm pretty sure the fix is not correct though and didn't have the time > to work on a proper fix. > Is there any plan to actually fix this? Because this bug is still open, syzbot isn't able to report "workqueue lockup" bugs elsewhere in the kernel. - Eric ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [rtc] Re: BUG: workqueue lockup (4) 2019-06-10 23:49 ` [rtc] " Eric Biggers @ 2019-06-11 6:59 ` Alexandre Belloni 0 siblings, 0 replies; 4+ messages in thread From: Alexandre Belloni @ 2019-06-11 6:59 UTC (permalink / raw) To: Eric Biggers Cc: Alessandro Zummo, Jiwei Sun, linux-rtc, Dmitry Vyukov, syzbot, LKML, syzkaller-bugs On 10/06/2019 16:49:59-0700, Eric Biggers wrote: > On Sun, Oct 07, 2018 at 09:39:18PM +0200, Alexandre Belloni wrote: > > Hi, > > > > On 07/10/2018 14:18:31+0200, Dmitry Vyukov wrote: > > > On Sun, Oct 7, 2018 at 2:15 PM, syzbot > > > <syzbot+08116743f8ad6f9a6de7@syzkaller.appspotmail.com> wrote: > > > > Hello, > > > > > > > > syzbot found the following crash on: > > > > > > > > HEAD commit: c1d84a1b42ef Merge git://git.kernel.org/pub/scm/linux/kern.. > > > > git tree: upstream > > > > console output: https://syzkaller.appspot.com/x/log.txt?x=14c5f491400000 > > > > kernel config: https://syzkaller.appspot.com/x/.config?x=c0af03fe452b65fb > > > > dashboard link: https://syzkaller.appspot.com/bug?extid=08116743f8ad6f9a6de7 > > > > compiler: gcc (GCC) 8.0.1 20180413 (experimental) > > > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14514a6e400000 > > > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1025ebb9400000 > > > > > > The reproducer seems to be all about rtc. So +rtc maintainers. > > > > > > > It seems to be that bug: > > http://patchwork.ozlabs.org/patch/898552/ > > > > I'm pretty sure the fix is not correct though and didn't have the time > > to work on a proper fix. > > > > Is there any plan to actually fix this? Because this bug is still open, syzbot > isn't able to report "workqueue lockup" bugs elsewhere in the kernel. > This is still on my radar. -- Alexandre Belloni, Bootlin Embedded Linux and Kernel engineering https://bootlin.com ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2019-06-11 6:59 UTC | newest]
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[not found] <0000000000005764090577a27486@google.com>
2018-10-07 12:18 ` BUG: workqueue lockup (4) Dmitry Vyukov
2018-10-07 19:39 ` Alexandre Belloni
2019-06-10 23:49 ` [rtc] " Eric Biggers
2019-06-11 6:59 ` Alexandre Belloni
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