[ 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 '10.128.0.230' (ECDSA) to the list of known hosts. 2020/08/04 23:48:44 fuzzer started 2020/08/04 23:48:44 connecting to host at 10.128.0.105:40831 2020/08/04 23:48:44 checking machine... 2020/08/04 23:48:44 checking revisions... 2020/08/04 23:48:44 testing simple program... syzkaller login: [ 35.827923][ T0] ------------[ cut here ]------------ [ 35.833501][ T0] WARNING: CPU: 1 PID: 0 at kernel/time/tick-sched.c:1024 tick_nohz_idle_enter+0x157/0x170 [ 35.843968][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 35.850558][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-syzkaller #0 [ 35.858088][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.868134][ T0] Call Trace: [ 35.871417][ T0] dump_stack+0x16e/0x25d [ 35.874877][ T8730] IPVS: ftp: loaded support on port[0] = 21 [ 35.875735][ T0] panic+0x20c/0x69a [ 35.885491][ T0] ? tick_nohz_idle_enter+0x157/0x170 [ 35.890851][ T0] __warn+0x211/0x240 [ 35.894828][ T0] ? tick_nohz_idle_enter+0x157/0x170 [ 35.900196][ T0] report_bug+0x153/0x1d0 [ 35.904522][ T0] handle_bug+0x4d/0x90 [ 35.905688][ T8730] ------------[ cut here ]------------ [ 35.908667][ T0] exc_invalid_op+0x16/0x70 [ 35.908681][ T0] asm_exc_invalid_op+0x12/0x20 [ 35.908697][ T0] RIP: 0010:tick_nohz_idle_enter+0x157/0x170 [ 35.908714][ T0] Code: c7 06 00 74 33 e8 29 f3 07 00 fb 66 0f 1f 44 00 00 5b 41 5c 41 5e 41 5f c3 e8 15 f3 07 00 0f 0b e9 71 ff ff ff e8 09 f3 07 00 <0f> 0b e9 f1 fe ff ff e8 fd f2 07 00 0f 0b e8 f6 f2 07 00 0f 0b 0f [ 35.914189][ T8730] WARNING: CPU: 0 PID: 8730 at kernel/softirq.c:175 __local_bh_enable_ip+0xdf/0x100 [ 35.918650][ T0] RSP: 0018:ffffc90000cd3ed8 EFLAGS: 00010293 [ 35.918660][ T0] RAX: ffffffff81441ad7 RBX: 0000000000000000 RCX: ffff88812b7cc340 [ 35.918666][ T0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 35.918673][ T0] RBP: ffff88812b7cc340 R08: ffffffff814419bb R09: 0000ffff88619eb7 [ 35.918679][ T0] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 35.918686][ T0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 35.918756][ T0] ? tick_nohz_idle_enter+0x3b/0x170 [ 35.918773][ T0] ? tick_nohz_idle_enter+0x157/0x170 [ 35.923610][ T8730] Modules linked in: [ 35.929591][ T0] ? tick_nohz_idle_enter+0x157/0x170 [ 35.929606][ T0] do_idle+0x36/0x330 [ 35.929623][ T0] cpu_startup_entry+0x15/0x20 [ 35.949273][ T8730] CPU: 0 PID: 8730 Comm: syz-executor.0 Not tainted 5.8.0-syzkaller #0 [ 35.958640][ T0] secondary_startup_64+0xa4/0xb0 [ 35.964641][ T8730] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.982051][ T0] Kernel Offset: disabled [ 36.062105][ T0] Rebooting in 86400 seconds..