watchdog: BUG: soft lockup - CPU#1 stuck for 121s! [systemd-timesyn:4669] Modules linked in: irq event stamp: 108400 hardirqs last enabled at (108399): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 hardirqs last disabled at (108400): [] idtentry_enter_cond_rcu+0x1d/0x50 arch/x86/entry/common.c:607 softirqs last enabled at (78026): [] __do_softirq+0x748/0xa60 kernel/softirq.c:319 softirqs last disabled at (78019): [] asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 CPU: 1 PID: 4669 Comm: systemd-timesyn Not tainted 5.8.0-rc3-next-20200701-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 30 02 0b 00 f3 90 <44> 8b 64 24 48 31 ff 41 83 e4 01 44 89 e6 e8 9b fe 0a 00 45 85 e4 RSP: 0018:ffffc900017e79e0 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 1ffff920002fcf40 RCX: ffffffff8168e955 RDX: ffff8880a1cf6200 RSI: ffffffff8168e940 RDI: 0000000000000005 RBP: ffffc900017e7ac0 R08: 0000000000000001 R09: ffff8880ae636dc7 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000040 FS: 00007fc9bbc9d8c0(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004e9f30 CR3: 000000009fd28000 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:699 clock_was_set+0x18/0x20 kernel/time/hrtimer.c:872 timekeeping_inject_offset+0x3e9/0x4d0 kernel/time/timekeeping.c:1305 do_adjtimex+0x28f/0x990 kernel/time/timekeeping.c:2332 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+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fc9bb0931b7 Code: Bad RIP value. RSP: 002b:00007ffd538599e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 RAX: ffffffffffffffda RBX: 000055e67a942630 RCX: 00007fc9bb0931b7 RDX: ffffffffe7c9f910 RSI: 00007ffd53859ab0 RDI: 0000000000000000 RBP: 00007ffd53859ab0 R08: 0000000000000020 R09: 000000000000000d R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00007ffd53859ba0 R14: 000000000000000c R15: 0000000000000001 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 1 Comm: systemd Not tainted 5.8.0-rc3-next-20200701-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:strlen+0x5c/0x90 lib/string.c:544 Code: 48 bb 00 00 00 00 00 fc ff df 48 89 e8 48 83 c0 01 48 89 c2 48 89 c1 48 c1 ea 03 83 e1 07 0f b6 14 1a 38 ca 7f 04 84 d2 75 1f <80> 38 00 75 de 48 83 c4 08 48 29 e8 5b 5d c3 48 83 c4 08 31 c0 5b RSP: 0000:ffffc90000007bb0 EFLAGS: 00000002 RAX: ffffffff884d62f2 RBX: dffffc0000000000 RCX: 0000000000000002 RDX: 0000000000000003 RSI: ffff8880ae627758 RDI: ffffffff884d62e0 RBP: ffffffff884d62e0 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff81592a30 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff89ba9aa0 R14: ffff8880ae627758 R15: ffffc90000007c90 FS: 00007fe0e6339500(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f764fcdb18 CR3: 00000000a830f000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: strlen include/linux/string.h:328 [inline] trace_event_get_offsets_lock_acquire include/trace/events/lock.h:13 [inline] perf_trace_lock_acquire+0xbe/0x520 include/trace/events/lock.h:13 trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x377/0xad0 kernel/locking/lockdep.c:4958 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x5b/0x80 kernel/locking/spinlock.c:167 __run_hrtimer kernel/time/hrtimer.c:1524 [inline] __hrtimer_run_queues+0x252/0xfc0 kernel/time/hrtimer.c:1584 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1646 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+0xe0/0x120 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:765 [inline] RIP: 0010:lock_acquire+0x270/0xad0 kernel/locking/lockdep.c:4962 Code: 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 f8 06 00 00 48 83 3d 4d c0 5a 08 00 0f 84 a6 05 00 00 48 8b 7c 24 08 57 9d <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 03 44 24 10 48 c7 RSP: 0000:ffffc90000c7fc60 EFLAGS: 00000286 RAX: 1ffffffff1369fe0 RBX: ffff8880a9588040 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000286 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8c5a1a37 R10: fffffbfff18b4346 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880aa124378 R14: 0000000000000000 R15: ffff888017b740a8 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:354 [inline] handle_pte_fault mm/memory.c:4238 [inline] __handle_mm_fault mm/memory.c:4360 [inline] handle_mm_fault+0x2067/0x43f0 mm/memory.c:4397 do_user_addr_fault+0x5a2/0xd00 arch/x86/mm/fault.c:1295 handle_page_fault arch/x86/mm/fault.c:1365 [inline] exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:565 RIP: 0033:0x7fe0e48a15b3 Code: Bad RIP value. RSP: 002b:00007ffcbe12aab0 EFLAGS: 00010297 RAX: 000055f764fcdb00 RBX: 0000000000000100 RCX: 00000000bfffffff RDX: 00007fe0e4bc1b58 RSI: 0000000020a80112 RDI: 0000000000000001 RBP: 000055f764fcdc00 R08: 00007fe0e4bc1d58 R09: 0000000000000110 R10: 0000000000000004 R11: 1670d5b9b7fd7fdd R12: 0000000000000110 R13: 00007fe0e4bc1b58 R14: 000055f764fcd9f0 R15: 00007fe0e4bc1b00