On Thu, 2020-11-12 at 19:31 +0000, Valentin Schneider wrote: > a) Do you also get this on CONFIG_PREEMPT=y?
This also happens with: CONFIG_PREEMPT=y CONFIG_PREEMPTION=y CONFIG_PREEMPT_RCU=y CONFIG_PREEMPT_NOTIFIERS=y CONFIG_DEBUG_PREEMPT=y CONFIG_PREEMPTIRQ_TRACEPOINTS=y [ 1235.044945][ T330] INFO: task trinity-c4:60050 blocked for more than 245 seconds. [ 1235.052540][ T330] Not tainted 5.10.0-rc3-next-20201112+ #2 [ 1235.058774][ T330] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1235.067392][ T330] task:trinity-c4 state:D stack:26880 pid:60050 ppid: 1722 flags:0x00004000 [ 1235.076505][ T330] Call Trace: [ 1235.079680][ T330] __schedule (kernel/sched/core.c:4272 kernel/sched/core.c:5019) [ 1235.083971][ T330] ? __sched_text_start (kernel/sched/core.c:4901) [ 1235.088721][ T330] schedule (kernel/sched/core.c:5099 (discriminator 1)) [ 1235.092661][ T330] schedule_timeout (kernel/time/timer.c:1848) [ 1235.097399][ T330] ? usleep_range (kernel/time/timer.c:1833) [ 1235.101945][ T330] ? wait_for_completion (kernel/sched/completion.c:85 kernel/sched/completion.c:106 kernel/sched/completion.c:117 kernel/sched/completion.c:138) [ 1235.107156][ T330] ? lock_downgrade (kernel/locking/lockdep.c:5443) [ 1235.111883][ T330] ? rcu_read_unlock (./include/linux/rcupdate.h:692 (discriminator 5)) [ 1235.116561][ T330] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:202 ./include/asm-generic/atomic-instrumented.h:707 ./include/asm-generic/qspinlock.h:82 kernel/locking/spinlock_debug.c:113) [ 1235.121459][ T330] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:54 ./arch/x86/include/asm/irqflags.h:94 ./include/linux/spinlock_api_smp.h:168 kernel/locking/spinlock.c:199) [ 1235.126601][ T330] wait_for_completion (kernel/sched/completion.c:86 kernel/sched/completion.c:106 kernel/sched/completion.c:117 kernel/sched/completion.c:138) [ 1235.131591][ T330] ? wait_for_completion_interruptible (kernel/sched/completion.c:137) [ 1235.138013][ T330] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:160 kernel/locking/spinlock.c:191) [ 1235.143698][ T330] affine_move_task (./include/linux/instrumented.h:101 ./include/asm-generic/atomic-instrumented.h:220 ./include/linux/refcount.h:272 ./include/linux/refcount.h:315 ./include/linux/refcount.h:333 kernel/sched/core.c:2263) [ 1235.148451][ T330] ? move_queued_task (kernel/sched/core.c:2151) [ 1235.153351][ T330] ? update_curr (kernel/sched/sched.h:1176 kernel/sched/fair.c:845) [ 1235.157848][ T330] ? enqueue_entity (kernel/sched/fair.c:4247) [ 1235.162658][ T330] ? set_next_task_fair (./arch/x86/include/asm/jump_label.h:25 (discriminator 2) ./include/linux/jump_label.h:200 (discriminator 2) kernel/sched/fair.c:4567 (discriminator 2) kernel/sched/fair.c:4683 (discriminator 2) kernel/sched/fair.c:10953 (discriminator 2)) [ 1235.167667][ T330] __set_cpus_allowed_ptr (kernel/sched/core.c:2353) [ 1235.172905][ T330] ? affine_move_task (kernel/sched/core.c:2287) [ 1235.177826][ T330] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:160 kernel/locking/spinlock.c:191) [ 1235.183501][ T330] sched_setaffinity (kernel/sched/core.c:6460) [ 1235.188345][ T330] ? __ia32_sys_sched_getattr (kernel/sched/core.c:6393) [ 1235.193937][ T330] ? _copy_from_user (./arch/x86/include/asm/uaccess_64.h:46 ./arch/x86/include/asm/uaccess_64.h:52 lib/usercopy.c:16) [ 1235.198605][ T330] __x64_sys_sched_setaffinity (kernel/sched/core.c:6511 kernel/sched/core.c:6500 kernel/sched/core.c:6500) [ 1235.204291][ T330] ? sched_setaffinity (kernel/sched/core.c:6500) [ 1235.209324][ T330] ? syscall_enter_from_user_mode (./arch/x86/include/asm/irqflags.h:54 ./arch/x86/include/asm/irqflags.h:94 kernel/entry/common.c:98) [ 1235.215133][ T330] do_syscall_64 (arch/x86/entry/common.c:46) [ 1235.219431][ T330] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:127) [ 1235.225251][ T330] RIP: 0033:0x7fb102b1178d > b) Could you try the below? It is running good so far on multiple systems. I'll keep it running and report back if it happens again.
