Re: [linus:master] [sched/fair] 4823725d9d: INFO:task_blocked_for_more_than#seconds

[Oliver Sang]

hi, Peter Zijlstra,

On Wed, May 06, 2026 at 09:48:58AM +0200, Peter Zijlstra wrote:
> On Wed, May 06, 2026 at 03:06:13PM +0800, Oliver Sang wrote:
> 
> > we tested upon below commit:
> > 0c0cf14be4909 (tip/sched/urgent) sched/fair: Fix wakeup_preempt_fair() for not waking up task
> > 
> > found most issues are still existing
> 
> Moo :-(
> 
> > =========================================================================================
> > compiler/kconfig/rootfs/sleep/tbox_group/testcase:
> >   gcc-14/i386-randconfig-2006-20250804/yocto-i386-minimal-20190520.cgz/1/vm-snb/boot
> > 
> > 9fe89f022c05d99c 4823725d9d1d9cc5b36647e0cb8 0c0cf14be490975a7431e9d49fc
> > ---------------- --------------------------- ---------------------------
> >        fail:runs  %reproduction    fail:runs  %reproduction    fail:runs
> >            |             |             |             |             |
> >            :499         13%          64:499          5%          23:1001  last_state.booting
> >            :499          6%          29:499          3%          13:1001  dmesg.BUG:kernel_hang_in_boot_stage
> >            :499          7%          33:499          2%          10:1001  dmesg.BUG:workqueue_lockup-pool
> >            :499          0%           1:499          0%           1:1001  dmesg.EIP:_raw_spin_unlock_irqrestore
> >            :499          1%           3:499          0%           1:1001  dmesg.EIP:finish_task_switch
> >            :499          0%           1:499          0%            :1001  dmesg.EIP:handle_softirqs
> >            :499          0%           2:499          0%           1:1001  dmesg.EIP:lock_acquire
> >            :499          0%           1:499          0%           2:1001  dmesg.EIP:lock_release
> >            :499          0%           1:499          0%            :1001  dmesg.EIP:on_each_cpu_cond_mask
> >            :499          0%           1:499          0%            :1001  dmesg.EIP:rcu_preempt_deferred_qs_irqrestore
> >            :499          1%           3:499          0%           1:1001  dmesg.INFO:rcu_preempt_detected_stalls_on_CPUs/tasks
> >            :499          3%          14:499          2%          10:1001  dmesg.INFO:task_blocked_for_more_than#seconds
> > 
> > the config used for 0c0cf14be4909 is attached as config-7.1.0-rc1+
> > one dmesg from 0c0cf14be4909 for dmesg.INFO:task_blocked_for_more_than#seconds
> > is attached as dmesg-0c0cf14be4.decoded.xz
> 
> Do you have a URL for that yocto image? git grep yocto on the lkp repo
> didn't immediately find me one, and I don't appear to have it in my
> .lkp/cache either.

it's here:
https://download.01.org/0day-ci/lkp-qemu/osimage/yocto/yocto-i386-minimal-20190520.cgz

>