INFO: rcu_preempt self-detected stall on CPU 1-...: (10499 ticks this GP) idle=067/140000000000001/0 softirq=20410/20410 fqs=5222 (t=10500 jiffies g=6009 c=6008 q=1425) Task dump for CPU 1: syz-executor.3 R running task 28408 8635 2101 0x0000000c ffff8801db707c40 ffffffff813fa9e1 ffffffff813fa7e0 0000000000000002 0000000000000001 ffff8801db721000 dffffc0000000000 ffffffff830d1848 ffffffff830d1880 ffff8801db707c60 ffffffff813faeac ffffffff830d1800 Call Trace: <IRQ> [ 337.624327] [<ffffffff813fa9e1>] sched_show_task.cold+0x27f/0x327 kernel/sched/core.c:5317 [<ffffffff813faeac>] dump_cpu_task+0x7a/0x7f kernel/sched/core.c:9042 [<ffffffff814056b9>] rcu_dump_cpu_stacks+0x193/0x1c3 kernel/rcu/tree.c:1303 [<ffffffff814063be>] print_cpu_stall kernel/rcu/tree.c:1446 [inline] [<ffffffff814063be>] check_cpu_stall kernel/rcu/tree.c:1514 [inline] [<ffffffff814063be>] __rcu_pending kernel/rcu/tree.c:3487 [inline] [<ffffffff814063be>] rcu_pending kernel/rcu/tree.c:3551 [inline] [<ffffffff814063be>] rcu_check_callbacks.cold+0x44a/0xd2f kernel/rcu/tree.c:2880 [<ffffffff81267031>] update_process_times+0x31/0x70 kernel/time/timer.c:1629 [<ffffffff8129609a>] tick_sched_handle.isra.0+0x4a/0xf0 kernel/time/tick-sched.c:151 [<ffffffff812961ba>] tick_sched_timer+0x7a/0x130 kernel/time/tick-sched.c:1190 [<ffffffff81269cb3>] __run_hrtimer kernel/time/hrtimer.c:1255 [inline] [<ffffffff81269cb3>] __hrtimer_run_queues+0x313/0xe00 kernel/time/hrtimer.c:1319 [<ffffffff8126c1e6>] hrtimer_interrupt+0x1b6/0x450 kernel/time/hrtimer.c:1353 [<ffffffff81090286>] local_apic_timer_interrupt+0x76/0xa0 arch/x86/kernel/apic/apic.c:937 [<ffffffff8281a9b9>] smp_apic_timer_interrupt+0x79/0xb0 arch/x86/kernel/apic/apic.c:961 [<ffffffff8281822d>] apic_timer_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:648 <EOI> [ 337.739423] [<ffffffff813be294>] ? perf_output_read_group kernel/events/core.c:5736 [inline] <EOI> [ 337.739423] [<ffffffff813be294>] ? perf_output_read+0x684/0x12e0 kernel/events/core.c:5771 [<ffffffff813be294>] perf_output_read_group kernel/events/core.c:5736 [inline] [<ffffffff813be294>] perf_output_read+0x684/0x12e0 kernel/events/core.c:5771 [<ffffffff813df212>] perf_output_sample+0x1142/0x17e0 kernel/events/core.c:5813 [<ffffffff813e0ab9>] __perf_event_output kernel/events/core.c:6085 [inline] [<ffffffff813e0ab9>] perf_event_output_backward+0x129/0x240 kernel/events/core.c:6106 [<ffffffff813cb7c1>] __perf_event_overflow+0x121/0x330 kernel/events/core.c:7198 [<ffffffff813cbedc>] perf_swevent_overflow+0x17c/0x210 kernel/events/core.c:7274 [<ffffffff813cc11c>] perf_swevent_event+0x1ac/0x280 kernel/events/core.c:7307 [<ffffffff813e3309>] do_perf_sw_event kernel/events/core.c:7415 [inline] [<ffffffff813e3309>] ___perf_sw_event+0x299/0x4c0 kernel/events/core.c:7446 [<ffffffff813e3577>] __perf_sw_event+0x47/0x90 kernel/events/core.c:7458 [<ffffffff810b1c3d>] perf_sw_event include/linux/perf_event.h:1040 [inline] [<ffffffff810b1c3d>] __do_page_fault+0x6cd/0xa60 arch/x86/mm/fault.c:1447 [<ffffffff810b2028>] do_page_fault+0x28/0x30 arch/x86/mm/fault.c:1469 [<ffffffff82817ab5>] page_fault+0x25/0x30 arch/x86/entry/entry_64.S:951 [<ffffffff81526f8a>] pipe_write+0x25a/0xe40 fs/pipe.c:433 [<ffffffff8150a431>] new_sync_write fs/read_write.c:498 [inline] [<ffffffff8150a431>] __vfs_write+0x3c1/0x560 fs/read_write.c:511 [<ffffffff8150cd15>] vfs_write+0x185/0x520 fs/read_write.c:559 [<ffffffff81510aec>] SYSC_write fs/read_write.c:606 [inline] [<ffffffff81510aec>] SyS_write+0xdc/0x1c0 fs/read_write.c:598 [<ffffffff810056bd>] do_syscall_64+0x1ad/0x570 arch/x86/entry/common.c:285 [<ffffffff82816a93>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb