INFO: rcu_sched detected stalls on CPUs/tasks: (detected by 1, t=10502 jiffies, g=1016, c=1015, q=7) All QSes seen, last rcu_sched kthread activity 10500 (4294968512-4294958012), jiffies_till_next_fqs=1, root ->qsmask 0x0 syz-executor.2 R running task 28112 7309 7115 0x8000000c Call Trace: sched_show_task kernel/sched/core.c:5168 [inline] sched_show_task.cold+0x2f0/0x351 kernel/sched/core.c:5143 print_other_cpu_stall kernel/rcu/tree.c:1501 [inline] check_cpu_stall kernel/rcu/tree.c:1616 [inline] __rcu_pending kernel/rcu/tree.c:3390 [inline] rcu_pending kernel/rcu/tree.c:3452 [inline] rcu_check_callbacks.cold+0xcb1/0xd0a kernel/rcu/tree.c:2792 update_process_times+0x31/0x70 kernel/time/timer.c:1590 tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:161 tick_sched_timer+0x43/0x130 kernel/time/tick-sched.c:1219 __run_hrtimer kernel/time/hrtimer.c:1220 [inline] __hrtimer_run_queues+0x270/0xbc0 kernel/time/hrtimer.c:1284 hrtimer_interrupt+0x1d8/0x5d0 kernel/time/hrtimer.c:1318 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline] smp_apic_timer_interrupt+0x11c/0x5e0 arch/x86/kernel/apic/apic.c:1100 apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792 RIP: 0010:send_hsr_supervision_frame+0x89b/0xec0 net/hsr/hsr_device.c:325 RSP: 0018:ffff8880aed07ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: ffff88807f5e0680 RBX: 0000000000000028 RCX: ffff88807f5e0f00 RDX: 0000000000000100 RSI: ffffffff87f888e0 RDI: 0000000000000282 RBP: ffff8880aed07d10 R08: 000000004528cb55 R09: ffff88807f5e0f48 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888089dfddc0 R13: ffff88809d594f80 R14: 0000000000000084 R15: 0000000000000282 hsr_announce+0xf5/0x340 net/hsr/hsr_device.c:348 call_timer_fn+0x161/0x670 kernel/time/timer.c:1279 expire_timers kernel/time/timer.c:1318 [inline] __run_timers kernel/time/timer.c:1636 [inline] __run_timers kernel/time/timer.c:1604 [inline] run_timer_softirq+0x5b7/0x1520 kernel/time/timer.c:1649 __do_softirq+0x244/0x9a0 kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x160/0x1b0 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:648 [inline] smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102 apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792 RIP: 0010:page_pgdat include/linux/mm.h:1018 [inline] RIP: 0010:__dec_node_page_state+0x0/0x80 mm/vmstat.c:391 RSP: 0018:ffff8880502d7738 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff10 RAX: ffff88807f5e0680 RBX: 0000000000000000 RCX: ffff8880502d7990 RDX: 0000000000000000 RSI: 000000000000000c RDI: ffffea00021a3080 RBP: ffff8880502d7770 R08: ffff8880502d79b8 R09: ffffffff89586de8 R10: ffff88807f5e0f00 R11: ffff88807f5e0680 R12: ffffea00021a3080 R13: ffffea00021a30a0 R14: ffffea00021a3080 R15: ffffea0001cf2ba0 zap_pte_range mm/memory.c:1342 [inline] zap_pmd_range mm/memory.c:1444 [inline] zap_pud_range mm/memory.c:1473 [inline] zap_p4d_range mm/memory.c:1494 [inline] unmap_page_range+0xabd/0x19f0 mm/memory.c:1515 unmap_single_vma+0x15d/0x2c0 mm/memory.c:1560 unmap_vmas+0xac/0x170 mm/memory.c:1590 exit_mmap+0x285/0x4e0 mm/mmap.c:3062 __mmput kernel/fork.c:930 [inline] mmput+0x114/0x440 kernel/fork.c:951 exit_mm kernel/exit.c:545 [inline] do_exit+0x6fc/0x2c80 kernel/exit.c:841 do_group_exit+0x111/0x330 kernel/exit.c:951 get_signal+0x381/0x1cd0 kernel/signal.c:2413 do_signal+0x86/0x19a0 arch/x86/kernel/signal.c:814 exit_to_usermode_loop+0x15c/0x220 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4bc/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a919 RSP: 002b:00007fb97facecf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 000000000075bf28 RCX: 000000000045a919 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 000000000075bf2c RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf2c R13: 00007ffc2a68266f R14: 00007fb97facf9c0 R15: 000000000075bf2c