watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [systemd-timesyn:4342] Modules linked in: irq event stamp: 96254 hardirqs last enabled at (96253): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 hardirqs last disabled at (96254): [] irqentry_enter+0x1d/0x50 kernel/entry/common.c:318 softirqs last enabled at (90896): [] asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 softirqs last disabled at (90887): [] asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 CPU: 1 PID: 4342 Comm: systemd-timesyn Not tainted 5.8.0-next-20200812-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x192/0x4f0 kernel/smp.c:382 Code: 10 8b 7c 24 1c 48 8d 74 24 40 48 89 44 24 50 48 8b 44 24 08 48 89 44 24 58 e8 fa f9 ff ff 41 89 c5 eb 07 e8 20 0a 0b 00 f3 90 <44> 8b 64 24 48 31 ff 41 83 e4 01 44 89 e6 e8 8b 06 0b 00 45 85 e4 RSP: 0018:ffffc9000543fa00 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 1ffff92000a87f44 RCX: ffffffff816966b5 RDX: ffff8880a8056040 RSI: ffffffff816966a0 RDI: 0000000000000005 RBP: ffffc9000543fac8 R08: 0000000000000001 R09: ffff8880ae636dc7 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000040 FS: 00007f588001e8c0(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555c017a7b08 CR3: 00000000a1046000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: smp_call_function_many_cond+0x1a4/0x990 kernel/smp.c:518 smp_call_function_many kernel/smp.c:577 [inline] smp_call_function kernel/smp.c:599 [inline] on_each_cpu+0x4a/0x240 kernel/smp.c:698 clock_was_set+0x18/0x20 kernel/time/hrtimer.c:876 timekeeping_inject_offset+0x436/0x570 kernel/time/timekeeping.c:1308 do_adjtimex+0x28f/0xa30 kernel/time/timekeeping.c:2335 do_clock_adjtime kernel/time/posix-timers.c:1109 [inline] __do_sys_clock_adjtime+0x155/0x250 kernel/time/posix-timers.c:1121 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f587f4141b7 Code: 73 01 c3 48 8b 0d e1 fc 2a 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 31 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d b1 fc 2a 00 f7 d8 64 89 01 48 RSP: 002b:00007fffbfe1efb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 RAX: ffffffffffffffda RBX: 000055fe59c9f630 RCX: 00007f587f4141b7 RDX: ffffffffe7fe3c03 RSI: 00007fffbfe1f080 RDI: 0000000000000000 RBP: 00007fffbfe1f080 R08: 0000000000000020 R09: 000000000000000d R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00007fffbfe1f170 R14: 0000000000000005 R15: 0000000000000001 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 6862 Comm: syz-executor508 Not tainted 5.8.0-next-20200812-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_release kernel/locking/lockdep.c:4714 [inline] RIP: 0010:lock_release+0x240/0x8e0 kernel/locking/lockdep.c:5023 Code: e8 08 00 00 45 85 f6 0f 84 7f 03 00 00 48 8d 4c 24 50 44 89 f2 4c 89 e6 4c 89 4c 24 08 4c 89 ff e8 45 f0 fe ff 4c 8b 4c 24 08 <48> 85 c0 48 89 c3 0f 84 ee 04 00 00 48 8d 78 24 48 b8 00 00 00 00 RSP: 0018:ffffc90000007d08 EFLAGS: 00000097 RAX: ffff888093d5e8f0 RBX: 0000000000000000 RCX: ffffc90000007d58 RDX: 0000000000000004 RSI: ffff8880ae627758 RDI: ffff888093d5e8f0 RBP: 1ffff92000000fa3 R08: 0000000000000001 R09: ffff888093d5e8e8 R10: fffffbfff1576761 R11: 0000000000000000 R12: ffff8880ae627758 R13: ffffffff8164b4d1 R14: 0000000000000001 R15: ffff888093d5e000 FS: 0000000001aa3880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000610 CR3: 00000000a14da000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:158 [inline] _raw_spin_unlock_irqrestore+0x16/0xe0 kernel/locking/spinlock.c:191 __run_hrtimer kernel/time/hrtimer.c:1520 [inline] __hrtimer_run_queues+0x5d1/0xfc0 kernel/time/hrtimer.c:1588 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1650 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0x142/0x5e0 arch/x86/kernel/apic/apic.c:1097 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] sysvec_apic_timer_interrupt+0xb2/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:770 [inline] RIP: 0010:on_each_cpu+0x149/0x240 kernel/smp.c:701 Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 e6 00 00 00 48 83 3d ef b7 4c 08 00 0f 84 af 00 00 00 e8 9c f3 0a 00 48 89 df 57 9d <0f> 1f 44 00 00 e8 8d f3 0a 00 bf 01 00 00 00 e8 f3 35 e6 ff 31 ff RSP: 0018:ffffc900039e7d78 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000293 RCX: 1ffffffff1575fd9 RDX: ffff888093d5e000 RSI: ffffffff81697d24 RDI: 0000000000000293 RBP: 0000000000000200 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffc900039e7ed8 R15: ffffffffa0cc316b clock_was_set+0x18/0x20 kernel/time/hrtimer.c:876 do_settimeofday64 kernel/time/timekeeping.c:1260 [inline] do_settimeofday64+0x39d/0x570 kernel/time/timekeeping.c:1226 do_sys_settimeofday64 kernel/time/time.c:195 [inline] do_sys_settimeofday64+0x1de/0x260 kernel/time/time.c:169 __do_sys_clock_settime kernel/time/posix-timers.c:1079 [inline] __se_sys_clock_settime kernel/time/posix-timers.c:1067 [inline] __x64_sys_clock_settime+0x197/0x260 kernel/time/posix-timers.c:1067 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x443859 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 0f fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fffc52fcf18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443859 RDX: 0000000000443859 RSI: 0000000020000400 RDI: 0000000000000000 RBP: 00007fffc52fcf20 R08: 0000000001bbbbbb R09: 0000000001bbbbbb R10: 0000000001bbbbbb R11: 0000000000000246 R12: 00007fffc52fcf30 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000