Re: [linus:master] [sched/fair] 4823725d9d: INFO:task_blocked_for_more_than#seconds
From: Peter Zijlstra
Date: Wed May 06 2026 - 03:49:14 EST
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.