[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.38' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 44.705684][ T6790] IPVS: ftp: loaded support on port[0] = 21 [ 44.837657][ C1] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 44.837664][ C1] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 44.837672][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-rc3-syzkaller #0 [ 44.837675][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.837692][ C1] RIP: 0010:pvclock_gtod_notify+0x0/0x3e0 [ 44.837698][ C1] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 44.837701][ C1] RSP: 0018:ffffc90000da8c70 EFLAGS: 00010046 [ 44.837706][ C1] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: dffffc0000000000 [ 44.837710][ C1] RDX: ffffffff8b5ebc18 RSI: 0000000000000000 RDI: ffffffff892a82f8 [ 44.837713][ C1] RBP: ffffffff892a82f8 R08: ffffffff814f19db R09: fffffbfff163349f [ 44.837716][ C1] R10: fffffbfff163349f R11: 0000000000000000 R12: 0000000000000000 [ 44.837720][ C1] R13: 00000000ffffffff R14: 1ffffffff125505f R15: 0000000000000000 [ 44.837725][ C1] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 44.837729][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.837733][ C1] CR2: 00007f3cd3bb86c0 CR3: 00000000a8cb1000 CR4: 00000000001406e0 [ 44.837740][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.837743][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.837745][ C1] Call Trace: [ 44.837751][ C1] [ 44.837761][ C1] raw_notifier_call_chain+0xe7/0x170 [ 44.837772][ C1] timekeeping_update+0x281/0x3f0 [ 44.837780][ C1] ? tick_sched_timer+0xba/0x410 [ 44.837785][ C1] timekeeping_advance+0x7cd/0x960 [ 44.837791][ C1] ? tick_sched_timer+0xba/0x410 [ 44.837800][ C1] ? _raw_spin_unlock+0x24/0x40 [ 44.837806][ C1] tick_sched_timer+0xba/0x410 [ 44.837812][ C1] ? tick_setup_sched_timer+0x3e0/0x3e0 [ 44.837820][ C1] __hrtimer_run_queues+0x42d/0x930 [ 44.837830][ C1] hrtimer_interrupt+0x373/0xd60 [ 44.837845][ C1] __sysvec_apic_timer_interrupt+0xf0/0x260 [ 44.837851][ C1] asm_call_on_stack+0xf/0x20 [ 44.837854][ C1] [ 44.837862][ C1] sysvec_apic_timer_interrupt+0xb9/0x130 [ 44.837869][ C1] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 44.837875][ C1] RIP: 0010:native_safe_halt+0xe/0x10 [ 44.837880][ C1] Code: 80 e1 07 80 c1 03 38 c1 7c bc 48 89 df e8 9a 86 94 f9 eb b2 cc cc cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 96 c2 43 00 fb f4 90 e9 07 00 00 00 0f 00 2d 86 c2 43 00 f4 c3 cc cc 41 56 53 65 [ 44.837883][ C1] RSP: 0018:ffffc90000d3fd60 EFLAGS: 00000286 [ 44.837887][ C1] RAX: 1ffffffff1257901 RBX: 0000000000000000 RCX: dffffc0000000000 [ 44.837890][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff881ef76a [ 44.837894][ C1] RBP: 1ffff11014d0024e R08: ffffffff817a1c60 R09: ffffed101533f069 [ 44.837897][ C1] R10: ffffed101533f069 R11: 0000000000000000 R12: 0000000000000001 [ 44.837900][ C1] R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff8880a6801270 [ 44.837908][ C1] ? trace_hardirqs_on+0x30/0x80 [ 44.837914][ C1] ? acpi_safe_halt+0x5a/0xe0 [ 44.837920][ C1] acpi_safe_halt+0x87/0xe0 [ 44.837930][ C1] acpi_idle_enter+0x3f4/0xac0 [ 44.837941][ C1] cpuidle_enter_state+0x2d7/0x7b0 [ 44.837949][ C1] cpuidle_enter+0x59/0x90 [ 44.837957][ C1] do_idle+0x49c/0x650 [ 44.837966][ C1] cpu_startup_entry+0x15/0x20 [ 44.837971][ C1] start_secondary+0x1b2/0x1e0 [ 44.837980][ C1] secondary_startup_64+0xa4/0xb0 [ 44.837987][ C1] Modules linked in: [ 44.838005][ C1] ---[ end trace 06cd99dd55ab3ce2 ]--- [ 44.838012][ C1] RIP: 0010:pvclock_gtod_notify+0x0/0x3e0 [ 44.838016][ C1] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 44.838019][ C1] RSP: 0018:ffffc90000da8c70 EFLAGS: 00010046 [ 44.838024][ C1] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: dffffc0000000000 [ 44.838027][ C1] RDX: ffffffff8b5ebc18 RSI: 0000000000000000 RDI: ffffffff892a82f8 [ 44.838030][ C1] RBP: ffffffff892a82f8 R08: ffffffff814f19db R09: fffffbfff163349f [ 44.838033][ C1] R10: fffffbfff163349f R11: 0000000000000000 R12: 0000000000000000 [ 44.838036][ C1] R13: 00000000ffffffff R14: 1ffffffff125505f R15: 0000000000000000 [ 44.838041][ C1] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 44.838044][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.838048][ C1] CR2: 00007f3cd3bb86c0 CR3: 00000000a8cb1000 CR4: 00000000001406e0 [ 44.838052][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.838056][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.838059][ C1] Kernel panic - not syncing: Fatal exception in interrupt [ 45.913397][ C1] Shutting down cpus with NMI [ 45.914877][ C1] Kernel Offset: disabled [ 46.401498][ C1] Rebooting in 86400 seconds..