watchdog: BUG: soft lockup - CPU#0 stuck for 174s! [swapper/0:0] Modules linked in: irq event stamp: 196290 hardirqs last enabled at (196287): [] acpi_safe_halt drivers/acpi/processor_idle.c:111 [inline] hardirqs last enabled at (196287): [] acpi_idle_do_entry+0x41/0x90 drivers/acpi/processor_idle.c:517 hardirqs last disabled at (196288): [] sysvec_apic_timer_interrupt+0xc/0xe0 arch/x86/kernel/apic/apic.c:1091 softirqs last enabled at (196290): [] irq_enter_rcu+0x7d/0x80 kernel/softirq.c:360 softirqs last disabled at (196289): [] irq_enter_rcu+0x62/0x80 kernel/softirq.c:363 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.9.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61 Code: 5b c3 65 48 8b 04 25 c0 7e 01 00 f0 80 48 02 20 48 8b 00 a8 08 75 c3 e9 7c ff ff ff e9 07 00 00 00 0f 00 2d dc 82 5c 00 fb f4 90 e9 07 00 00 00 0f 00 2d cc 82 5c 00 f4 c3 cc cc 41 54 55 53 RSP: 0018:ffffffff84203e30 EFLAGS: 00000286 RAX: 000000000002febf RBX: ffff888219ebd000 RCX: 00000000ffffffff RDX: 0000000000000000 RSI: ffffffff83ed9c6b RDI: ffffffff83f15a4e RBP: ffffffff8443d8a0 R08: 0000000000000001 R09: 0000000000000001 R10: ffff88812c02c464 R11: ffff88812c02c444 R12: 0000000000000001 R13: ffff88821b00b464 R14: ffffffff8443d908 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88812c000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcb43ccdf0 CR3: 0000000122326000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_safe_halt arch/x86/include/asm/paravirt.h:150 [inline] acpi_safe_halt drivers/acpi/processor_idle.c:111 [inline] acpi_idle_do_entry+0x50/0x90 drivers/acpi/processor_idle.c:517 acpi_idle_enter+0xa0/0xf0 drivers/acpi/processor_idle.c:648 cpuidle_enter_state+0x98/0x540 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x24/0x40 drivers/cpuidle/cpuidle.c:350 call_cpuidle kernel/sched/idle.c:132 [inline] cpuidle_idle_call kernel/sched/idle.c:213 [inline] do_idle+0x2dc/0x350 kernel/sched/idle.c:273 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:369 start_kernel+0x59b/0x5ba init/main.c:1049 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.9.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:trace_hrtimer_start include/trace/events/timer.h:195 [inline] RIP: 0010:debug_activate kernel/time/hrtimer.c:481 [inline] RIP: 0010:enqueue_hrtimer+0x3a/0x140 kernel/time/hrtimer.c:969 Code: c7 c6 60 9b 2f 84 e8 95 74 a7 00 0f 1f 44 00 00 65 8b 05 d9 29 da 7e 83 f8 3f 0f 87 d5 00 00 00 89 c0 48 0f a3 05 ae 42 3c 03 <0f> 82 8e 00 00 00 8b 4b 08 48 8d 7b 50 b8 01 00 00 00 48 89 ee 48 RSP: 0018:ffffc90000d08ef0 EFLAGS: 00000093 RAX: 0000000000000001 RBX: ffff88812c11f840 RCX: 0000000000000000 RDX: 0000000000010003 RSI: ffffffff85fed708 RDI: 00000000ffffffff RBP: ffff88810f781740 R08: 0000000000000028 R09: 0000000000000001 R10: ffff88812b004340 R11: 41c7dafe3d7f841d R12: ffff88812c11f7c0 R13: 0000000000000000 R14: ffff88812b004340 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88812c100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c0004bbc80 CR3: 000000010f162000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1541 [inline] __hrtimer_run_queues+0x3e7/0x510 kernel/time/hrtimer.c:1588 hrtimer_interrupt+0xf9/0x210 kernel/time/hrtimer.c:1650 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0x8e/0x2b0 arch/x86/kernel/apic/apic.c:1097 asm_call_irq_on_stack+0xf/0x20 __run_sysvec_on_irqstack arch/x86/include/asm/irq_stack.h:37 [inline] run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:89 [inline] sysvec_apic_timer_interrupt+0xc1/0xe0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61 Code: 5b c3 65 48 8b 04 25 c0 7e 01 00 f0 80 48 02 20 48 8b 00 a8 08 75 c3 e9 7c ff ff ff e9 07 00 00 00 0f 00 2d dc 82 5c 00 fb f4 90 e9 07 00 00 00 0f 00 2d cc 82 5c 00 f4 c3 cc cc 41 54 55 53 RSP: 0018:ffffc90000cd3e60 EFLAGS: 00000286 RAX: 00000000000431ab RBX: ffff88812aee7000 RCX: 00000000ffffffff RDX: 0000000000000000 RSI: ffffffff83ed9c6b RDI: ffffffff83f15a4e RBP: ffffffff8443d8a0 R08: 0000000000000001 R09: 0000000000000001 R10: ffff88812c12c464 R11: ffff88812c12c444 R12: 0000000000000001 R13: ffff88821b00b864 R14: ffffffff8443d908 R15: 0000000000000000 arch_safe_halt arch/x86/include/asm/paravirt.h:150 [inline] acpi_safe_halt drivers/acpi/processor_idle.c:111 [inline] acpi_idle_do_entry+0x50/0x90 drivers/acpi/processor_idle.c:517 acpi_idle_enter+0xa0/0xf0 drivers/acpi/processor_idle.c:648 cpuidle_enter_state+0x98/0x540 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x24/0x40 drivers/cpuidle/cpuidle.c:350 call_cpuidle kernel/sched/idle.c:132 [inline] cpuidle_idle_call kernel/sched/idle.c:213 [inline] do_idle+0x2dc/0x350 kernel/sched/idle.c:273 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:369 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243