[ 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 syzkaller login: [ 25.890745][ T8556] bash (8556) used greatest stack depth: 9720 bytes left Warning: Permanently added '10.128.10.42' (ECDSA) to the list of known hosts. 2020/08/05 06:30:24 fuzzer started 2020/08/05 06:30:24 connecting to host at 10.128.0.105:43049 2020/08/05 06:30:24 checking machine... 2020/08/05 06:30:24 checking revisions... 2020/08/05 06:30:24 testing simple program... [ 34.520045][ T8714] IPVS: ftp: loaded support on port[0] = 21 2020/08/05 06:30:25 building call list... [ 34.830037][ T26] tipc: TX() has been purged, node left! [ 36.153429][ T0] ------------[ cut here ]------------ [ 36.158922][ T0] WARNING: CPU: 1 PID: 0 at kernel/time/tick-sched.c:1024 tick_nohz_idle_enter+0x157/0x170 [ 36.169039][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 36.175620][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-syzkaller #0 [ 36.183141][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.193185][ T0] Call Trace: [ 36.196463][ T0] dump_stack+0x16e/0x25d [ 36.200841][ T0] panic+0x20c/0x69a [ 36.204741][ T0] ? tick_nohz_idle_enter+0x157/0x170 [ 36.210155][ T0] __warn+0x211/0x240 [ 36.214190][ T0] ? tick_nohz_idle_enter+0x157/0x170 [ 36.219542][ T0] report_bug+0x153/0x1d0 [ 36.223903][ T0] handle_bug+0x4d/0x90 [ 36.228061][ T0] exc_invalid_op+0x16/0x70 [ 36.232571][ T0] asm_exc_invalid_op+0x12/0x20 [ 36.237429][ T0] RIP: 0010:tick_nohz_idle_enter+0x157/0x170 [ 36.243404][ T0] Code: c7 06 00 74 33 e8 19 f3 07 00 fb 66 0f 1f 44 00 00 5b 41 5c 41 5e 41 5f c3 e8 05 f3 07 00 0f 0b e9 71 ff ff ff e8 f9 f2 07 00 <0f> 0b e9 f1 fe ff ff e8 ed f2 07 00 0f 0b e8 e6 f2 07 00 0f 0b 0f [ 36.263103][ T0] RSP: 0018:ffffc90000cd3ed8 EFLAGS: 00010293 [ 36.269156][ T0] RAX: ffffffff81442777 RBX: 0000000000000000 RCX: ffff88812b7cc340 [ 36.277112][ T0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 36.285065][ T0] RBP: ffff88812b7cc340 R08: ffffffff8144265b R09: 0000ffff88619eb7 [ 36.293047][ T0] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 36.300998][ T0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 36.308965][ T0] ? tick_nohz_idle_enter+0x3b/0x170 [ 36.314286][ T0] ? tick_nohz_idle_enter+0x157/0x170 [ 36.319703][ T0] ? tick_nohz_idle_enter+0x157/0x170 [ 36.325088][ T0] do_idle+0x36/0x330 [ 36.329079][ T0] cpu_startup_entry+0x15/0x20 [ 36.333847][ T0] secondary_startup_64+0xa4/0xb0 [ 36.340499][ T0] Kernel Offset: disabled [ 36.344965][ T0] Rebooting in 86400 seconds..