watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [systemd-timesyn:4095] Modules linked in: irq event stamp: 98244 hardirqs last enabled at (98243): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:587 hardirqs last disabled at (98244): [] idtentry_enter_cond_rcu+0x1d/0x50 arch/x86/entry/common.c:649 softirqs last enabled at (74502): [] sock_orphan include/net/sock.h:1873 [inline] softirqs last enabled at (74502): [] sk_common_release+0x138/0x390 net/core/sock.c:3307 softirqs last disabled at (74500): [] sock_orphan include/net/sock.h:1869 [inline] softirqs last disabled at (74500): [] sk_common_release+0xc2/0x390 net/core/sock.c:3307 CPU: 1 PID: 4095 Comm: systemd-timesyn Not tainted 5.8.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:write_comp_data+0x2f/0x80 kernel/kcov.c:218 Code: 05 76 49 8e 7e 65 48 8b 34 25 00 ff 01 00 a9 00 01 ff 00 74 0f f6 c4 01 74 59 8b 86 04 14 00 00 85 c0 74 4f 8b 86 e0 13 00 00 <83> f8 03 75 44 48 8b 86 e8 13 00 00 8b b6 e4 13 00 00 4c 8b 00 48 RSP: 0018:ffffc900019c79d8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 1ffff92000338f40 RCX: ffffffff8168b985 RDX: 0000000000000001 RSI: ffff8880989f4100 RDI: 0000000000000005 RBP: ffffc900019c7ac0 R08: 0000000000000001 R09: ffff8880ae636dc7 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000040 FS: 00007fea1acd48c0(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055ee77f53108 CR3: 00000000922f2000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: csd_lock_wait kernel/smp.c:108 [inline] smp_call_function_single+0x1a5/0x4f0 kernel/smp.c:382 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:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fea1a0ca1b7 Code: Bad RIP value. RSP: 002b:00007fff399f5c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 RAX: ffffffffffffffda RBX: 0000555d09152630 RCX: 00007fea1a0ca1b7 RDX: ffffffffe7d9190e RSI: 00007fff399f5d00 RDI: 0000000000000000 RBP: 00007fff399f5d00 R08: 0000000000000020 R09: 000000000000000d R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00007fff399f5df0 R14: 0000000000000004 R15: 0000000000000001 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 6851 Comm: syz-executor730 Not tainted 5.8.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x9/0x60 kernel/kcov.c:197 Code: 5d be 03 00 00 00 e9 f6 d4 23 02 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 65 48 8b 14 25 00 ff 01 00 <65> 8b 05 b0 44 8e 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 RSP: 0018:ffffc90000007ca8 EFLAGS: 00000002 RAX: 0000000080010002 RBX: 00000000000efe38 RCX: ffffffff817968e7 RDX: ffff8880a29902c0 RSI: ffff8880a29902c0 RDI: 0000000000000005 RBP: ffffffff8cbbef40 R08: 0000000000000001 R09: 0000000000000003 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000082 R13: dffffc0000000000 R14: 1ffff92000000f9b R15: ffffffff89bd0d40 FS: 000000000123f880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000610 CR3: 000000009dd6b000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] _raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:159 debug_object_activate+0x12e/0x3e0 lib/debugobjects.c:636 debug_hrtimer_activate kernel/time/hrtimer.c:416 [inline] debug_activate kernel/time/hrtimer.c:476 [inline] enqueue_hrtimer+0x27/0x3f0 kernel/time/hrtimer.c:965 __run_hrtimer kernel/time/hrtimer.c:1537 [inline] __hrtimer_run_queues+0xc1e/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:711 __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:587 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:765 [inline] RIP: 0010:on_each_cpu+0x149/0x240 kernel/smp.c:702 Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 e6 00 00 00 48 83 3d 97 10 4c 08 00 0f 84 af 00 00 00 e8 0c ea 0a 00 48 89 df 57 9d <0f> 1f 44 00 00 e8 fd e9 0a 00 bf 01 00 00 00 e8 83 a2 e6 ff 31 ff RSP: 0018:ffffc900018a7d70 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000293 RCX: 0000000000000000 RDX: ffff8880a29902c0 RSI: ffffffff8168cff4 RDI: 0000000000000293 RBP: 0000000000000200 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffc900018a7ed0 R15: ffffffffa0f1545a clock_was_set+0x18/0x20 kernel/time/hrtimer.c:872 do_settimeofday64 kernel/time/timekeeping.c:1257 [inline] do_settimeofday64+0x350/0x4e0 kernel/time/timekeeping.c:1223 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+0x60/0xe0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x443849 Code: Bad RIP value. RSP: 002b:00007ffdcfc68d28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443849 RDX: 0000000000443849 RSI: 0000000020000400 RDI: 0000000000000000 RBP: 00007ffdcfc68d30 R08: 0000000001bbbbbb R09: 0000000001bbbbbb R10: 0000000001bbbbbb R11: 0000000000000246 R12: 00007ffdcfc68d40 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000