[ 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 '10.128.1.28' (ECDSA) to the list of known hosts. 2020/08/05 09:33:48 fuzzer started 2020/08/05 09:33:48 connecting to host at 10.128.0.105:35669 2020/08/05 09:33:48 checking machine... 2020/08/05 09:33:48 checking revisions... 2020/08/05 09:33:48 testing simple program... syzkaller login: [ 36.584621][ T8742] IPVS: ftp: loaded support on port[0] = 21 [ 36.594121][ T5067] ------------[ cut here ]------------ [ 36.600030][ T5067] WARNING: CPU: 1 PID: 5067 at fs/eventpoll.c:688 ep_scan_ready_list+0x9f/0x470 [ 36.613721][ T5067] Kernel panic - not syncing: panic_on_warn set ... [ 36.620456][ T5067] CPU: 1 PID: 5067 Comm: systemd-journal Not tainted 5.8.0-syzkaller #0 [ 36.628806][ T5067] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.638867][ T5067] Call Trace: [ 36.642158][ T5067] dump_stack+0x16e/0x25d [ 36.646494][ T5067] panic+0x20c/0x69a [ 36.650431][ T5067] ? ep_scan_ready_list+0x9f/0x470 [ 36.655548][ T5067] __warn+0x211/0x240 [ 36.659543][ T5067] ? ep_scan_ready_list+0x9f/0x470 [ 36.664648][ T5067] report_bug+0x153/0x1d0 [ 36.668980][ T5067] handle_bug+0x4d/0x90 [ 36.673136][ T5067] exc_invalid_op+0x16/0x70 [ 36.677674][ T5067] asm_exc_invalid_op+0x12/0x20 [ 36.682564][ T5067] RIP: 0010:ep_scan_ready_list+0x9f/0x470 [ 36.688286][ T5067] Code: d7 cf c6 ff 85 db 74 1d e8 be cb c6 ff 40 84 ed 75 0c eb 1d e8 b2 cb c6 ff 40 84 ed 74 13 e8 a8 cb c6 ff eb 1c e8 a1 cb c6 ff <0f> 0b 40 84 ed 75 ed e8 95 cb c6 ff 4c 89 f7 44 89 fe e8 ea f8 a3 [ 36.707900][ T5067] RSP: 0018:ffffc90000e23dd0 EFLAGS: 00010293 [ 36.713956][ T5067] RAX: ffffffff81854ecf RBX: 0000000000000000 RCX: ffff88812565e540 [ 36.721947][ T5067] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 2020/08/05 09:33:49 building call list... [ 36.729930][ T5067] RBP: 0000000000000000 R08: ffffffff81854ea9 R09: 0000ffff88619eb7 [ 36.737909][ T5067] R10: 0000ffffffffffff R11: 0000000000000000 R12: 0000000000000000 [ 36.745892][ T5067] R13: ffffc90000e23df0 R14: ffff8881242eec00 R15: 0000000000000000 [ 36.753945][ T5067] ? ep_scan_ready_list+0x79/0x470 [ 36.759055][ T5067] ? ep_scan_ready_list+0x9f/0x470 [ 36.764431][ T5067] ? ep_busy_loop_end+0xd0/0xd0 [ 36.769288][ T5067] do_epoll_wait+0x55c/0x920 [ 36.773903][ T5067] ? __secure_computing+0x12e/0x1c0 [ 36.779109][ T5067] ? init_wait_entry+0x30/0x30 [ 36.783892][ T5067] __x64_sys_epoll_wait+0x4d/0x60 [ 36.788929][ T5067] do_syscall_64+0x39/0x80 [ 36.793350][ T5067] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 36.799249][ T5067] RIP: 0033:0x7faf859782e3 [ 36.803684][ T5067] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d 29 54 2b 00 00 75 13 49 89 ca b8 e8 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 0b c2 00 00 48 89 04 24 [ 36.823423][ T5067] RSP: 002b:00007ffdf772ef08 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 [ 36.831938][ T5067] RAX: ffffffffffffffda RBX: 000055b9e29831e0 RCX: 00007faf859782e3 [ 36.840016][ T5067] RDX: 0000000000000013 RSI: 00007ffdf772ef10 RDI: 0000000000000008 [ 36.847989][ T5067] RBP: 00007ffdf772f100 R08: 00000014c066fa40 R09: 00007ffdf779b080 [ 36.856511][ T5067] R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffdf772ef10 [ 36.864498][ T5067] R13: 0000000000000001 R14: ffffffffffffffff R15: 0005ac1e11a3412d [ 36.874516][ T5067] Kernel Offset: disabled [ 36.879050][ T5067] Rebooting in 86400 seconds..