INFO: rcu detected stall in worker

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: rcu detected stall in worker_thread (3) cgroups mm				1	1847d	1847d	0/28	closed as invalid on 2020/01/08 05:33
upstream	INFO: rcu detected stall in worker_thread (4) cgroups mm				28	1847d	1847d	0/28	closed as invalid on 2020/01/09 08:13
upstream	INFO: rcu detected stall in worker_thread (8) kernel				1	630d	630d	0/28	auto-obsoleted due to no activity on 2023/08/07 05:14
upstream	INFO: rcu detected stall in worker_thread (5) kernel				2	972d	1008d	0/28	auto-closed as invalid on 2022/08/31 00:50
upstream	INFO: rcu detected stall in worker_thread (9) mm	C	done		3180	19h45m	479d	0/28	upstream: reported C repro on 2023/10/07 18:33
upstream	INFO: rcu detected stall in worker_thread (2) cgroups mm				12	1847d	1848d	0/28	closed as invalid on 2020/01/08 05:23
upstream	INFO: rcu detected stall in worker_thread cgroups mm				150	1882d	1884d	0/28	closed as invalid on 2019/12/04 14:14
linux-6.1	INFO: rcu detected stall in worker_thread				6	223d	253d	0/3	auto-obsoleted due to no activity on 2024/09/27 16:46
upstream	INFO: rcu detected stall in worker_thread (6) kernel				1	847d	847d	0/28	auto-obsoleted due to no activity on 2023/01/12 15:50
linux-5.15	INFO: rcu detected stall in worker_thread (2)				4	226d	232d	0/3	auto-obsoleted due to no activity on 2024/09/24 04:34
upstream	INFO: rcu detected stall in worker_thread (7) kernel				1	740d	740d	0/28	auto-obsoleted due to no activity on 2023/04/27 16:37
linux-6.1	INFO: rcu detected stall in worker_thread (2)				1	7d08h	7d08h	0/3	upstream: reported on 2025/01/21 18:18
upstream	INFO: task hung in crda_timeout_work (8) wireless	C	done		541	8h28m	123d	0/28	upstream: reported C repro on 2024/09/27 16:53
android-5-15	BUG: soft lockup in worker_thread origin:lts	C		done	1	155d	155d	0/2	auto-obsoleted due to no activity on 2024/12/04 04:19

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...!: (1 GPs behind) idle=aad/1/0x4000000000000000 softirq=62253/62254 fqs=0 (detected by 0, t=10506 jiffies, g=85457, q=87) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3594 Comm: kworker/1:8 Not tainted 5.15.133-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 Workqueue: 0x0 (events) RIP: 0010:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] RIP: 0010:__lock_acquire+0xcd0/0x1ff0 kernel/locking/lockdep.c:4981 Code: 3d 91 48 c1 e8 03 48 bf 00 00 00 00 00 fc ff df 0f b6 04 38 84 c0 0f 85 0e 0c 00 00 83 3d c7 70 da 0f 00 75 44 48 8b 6c 24 58 <8d> 45 3f 85 ed 0f 49 c5 c1 f8 06 48 98 48 8d 3c c5 00 81 bd 8f be RSP: 0018:ffffc90000dd0a60 EFLAGS: 00000046 RAX: 0000000000000004 RBX: ffff888022e0a8b0 RCX: ffffffff913d0003 RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000 RBP: 0000000000000029 R08: dffffc0000000000 R09: fffffbfff1f7b021 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff888022e0a8a8 R14: 1ffff110045c151a R15: ffff888022e0a8d0 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000440 CR3: 0000000076bdb000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <NMI> </NMI> <IRQ> lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5622 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:269 rcu_read_lock include/linux/rcupdate.h:696 [inline] advance_sched+0x6ce/0x940 net/sched/sch_taprio.c:769 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:finish_lock_switch+0x91/0x100 kernel/sched/core.c:4781 Code: 45 31 c9 68 27 61 59 81 e8 fc 1a 09 00 48 83 c4 08 4c 89 ff e8 b0 da fe ff 66 90 4c 89 ff e8 26 27 cc 08 e8 e1 38 2d 00 fb 5b <41> 5c 41 5d 41 5e 41 5f c3 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 87 RSP: 0018:ffffc900030cfb38 EFLAGS: 00000286 RAX: 35115e8bf796e000 RBX: ffff888020ee1df4 RCX: ffffffff913d0003 RDX: dffffc0000000000 RSI: ffffffff8a8b0c60 RDI: ffffffff8ad87a00 RBP: ffffc900030cfbb0 R08: ffffffff81869a70 R09: ffffed10173672e1 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff1101736748b R14: ffff8880b9b3a458 R15: ffff8880b9b39700 finish_task_switch+0x134/0x630 kernel/sched/core.c:4898 context_switch kernel/sched/core.c:5029 [inline] __schedule+0x12cc/0x4590 kernel/sched/core.c:6372 schedule+0x11b/0x1f0 kernel/sched/core.c:6455 worker_thread+0xf56/0x1280 kernel/workqueue.c:2478 kthread+0x3f6/0x4f0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 </TASK> rcu: rcu_preempt kthread starved for 10506 jiffies! g85457 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:R running task stack:26712 pid: 15 ppid: 2 flags:0x00004000 Call Trace: <TASK> context_switch kernel/sched/core.c:5026 [inline] __schedule+0x12c4/0x4590 kernel/sched/core.c:6372 schedule+0x11b/0x1f0 kernel/sched/core.c:6455 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1884 rcu_gp_fqs_loop+0x2af/0xf70 kernel/rcu/tree.c:1959 rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2132 kthread+0x3f6/0x4f0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 </TASK> rcu: Stack dump where RCU GP kthread last ran: NMI backtrace for cpu 0 CPU: 0 PID: 17976 Comm: syz-executor.3 Not tainted 5.15.133-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline] rcu_check_gp_kthread_starvation+0x1d2/0x240 kernel/rcu/tree_stall.h:481 print_other_cpu_stall+0x137a/0x14d0 kernel/rcu/tree_stall.h:586 check_cpu_stall kernel/rcu/tree_stall.h:729 [inline] rcu_pending kernel/rcu/tree.c:3911 [inline] rcu_sched_clock_irq+0x94f/0x1770 kernel/rcu/tree.c:2606 update_process_times+0x196/0x200 kernel/time/timer.c:1788 tick_sched_handle kernel/time/tick-sched.c:254 [inline] tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline] RIP: 0010:smp_call_function_many_cond+0xa93/0xd90 kernel/smp.c:969 Code: 04 03 84 c0 0f 85 84 00 00 00 45 8b 7d 00 44 89 fe 83 e6 01 31 ff e8 7c c1 0b 00 41 83 e7 01 75 07 e8 11 be 0b 00 eb 41 f3 90 <48> b8 00 00 00 00 00 fc ff df 0f b6 04 03 84 c0 75 11 41 f7 45 00 RSP: 0018:ffffc90002e1f4a0 EFLAGS: 00000293 RAX: ffffffff81745f64 RBX: 1ffff11017367f31 RCX: ffff888020ee1dc0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90002e1f5e0 R08: ffffffff81745f34 R09: fffffbfff193c7e3 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffff8880b9b3f988 R14: ffff8880b9a3a780 R15: 0000000000000001 on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1135 __flush_tlb_multi arch/x86/include/asm/paravirt.h:87 [inline] flush_tlb_multi arch/x86/mm/tlb.c:900 [inline] flush_tlb_mm_range+0x2a5/0x4a0 arch/x86/mm/tlb.c:986 tlb_flush arch/x86/include/asm/tlb.h:23 [inline] tlb_flush_mmu_tlbonly+0x1ab/0x410 include/asm-generic/tlb.h:430 tlb_flush_mmu mm/mmu_gather.c:246 [inline] tlb_finish_mmu+0xd2/0x320 mm/mmu_gather.c:338 exit_mmap+0x3cd/0x670 mm/mmap.c:3188 __mmput+0x112/0x3b0 kernel/fork.c:1126 exit_mm+0x688/0x7f0 kernel/exit.c:548 do_exit+0x626/0x2480 kernel/exit.c:859 do_group_exit+0x144/0x310 kernel/exit.c:994 get_signal+0xc66/0x14e0 kernel/signal.c:2889 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fd054595ae9 Code: Unable to access opcode bytes at RIP 0x7fd054595abf. RSP: 002b:00007fd052b17178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fd0546b4f88 RCX: 00007fd054595ae9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd0546b4f88 RBP: 00007fd0546b4f80 R08: 00007fd052b176c0 R09: 00007fd052b176c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd0546b4f8c R13: 000000000000000b R14: 00007ffe4ed6fe20 R15: 00007ffe4ed6ff08 </TASK>