[ 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 '10.128.0.38' (ECDSA) to the list of known hosts. syzkaller login: [ 43.071067][ T6800] IPVS: ftp: loaded support on port[0] = 21 executing program [ 46.195032][ T6449] Bluetooth: hci0: command 0x0409 tx timeout [ 48.273656][ T5] Bluetooth: hci0: command 0x041b tx timeout [ 49.146120][ T6828] ------------[ cut here ]------------ [ 49.151747][ T6828] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 [ 49.161561][ T6828] WARNING: CPU: 0 PID: 6828 at lib/debugobjects.c:488 debug_object_assert_init+0x1fa/0x250 [ 49.171512][ T6828] Kernel panic - not syncing: panic_on_warn set ... [ 49.178098][ T6828] CPU: 0 PID: 6828 Comm: syz-executor612 Not tainted 5.8.0-syzkaller #0 [ 49.186394][ T6828] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.196493][ T6828] Call Trace: [ 49.199771][ T6828] dump_stack+0x1f0/0x31e [ 49.204118][ T6828] panic+0x264/0x7a0 [ 49.207989][ T6828] ? __warn+0x102/0x250 [ 49.212141][ T6828] ? debug_object_assert_init+0x1fa/0x250 [ 49.217843][ T6828] ? debug_object_assert_init+0x1fa/0x250 [ 49.223565][ T6828] __warn+0x227/0x250 [ 49.227601][ T6828] ? debug_object_assert_init+0x1fa/0x250 [ 49.233316][ T6828] report_bug+0x1b1/0x2e0 [ 49.237656][ T6828] handle_bug+0x42/0x80 [ 49.241812][ T6828] exc_invalid_op+0x16/0x40 [ 49.246428][ T6828] asm_exc_invalid_op+0x12/0x20 [ 49.251384][ T6828] RIP: 0010:debug_object_assert_init+0x1fa/0x250 [ 49.257698][ T6828] Code: e8 bb d6 12 fe 4c 8b 45 00 48 c7 c7 5f d3 14 89 48 c7 c6 59 d2 14 89 48 c7 c2 e2 4e 2c 89 31 c9 49 89 d9 31 c0 e8 46 69 a5 fd <0f> 0b ff 05 ca 97 ec 05 48 83 c5 38 48 89 e8 48 c1 e8 03 42 80 3c [ 49.277305][ T6828] RSP: 0018:ffffc90001697828 EFLAGS: 00010046 [ 49.283362][ T6828] RAX: be12fe8344782800 RBX: 0000000000000000 RCX: ffff8880943a00c0 [ 49.291395][ T6828] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 49.299339][ T6828] RBP: ffffffff894eeca0 R08: ffffffff815e07c9 R09: ffffed1015d041c3 [ 49.307304][ T6828] R10: ffffed1015d041c3 R11: 0000000000000000 R12: dffffc0000000000 [ 49.315273][ T6828] R13: ffff8880a6972200 R14: 0000000000000003 R15: ffffffff8ba6aad0 [ 49.323243][ T6828] ? vprintk_emit+0x339/0x3c0 [ 49.327930][ T6828] ? debug_object_assert_init+0x1fa/0x250 [ 49.333646][ T6828] del_timer+0x2f/0x340 [ 49.337795][ T6828] ? trace_irq_disable_rcuidle+0x1f/0x1c0 [ 49.343491][ T6828] try_to_grab_pending+0xba/0x9f0 [ 49.348506][ T6828] ? lockdep_hardirqs_on_prepare+0x445/0x6a0 [ 49.354469][ T6828] cancel_delayed_work+0x37/0x2b0 [ 49.359467][ T6828] l2cap_chan_del+0x5bf/0x760 [ 49.364123][ T6828] l2cap_chan_close+0x7bf/0xae0 [ 49.368957][ T6828] l2cap_sock_shutdown+0x39f/0x700 [ 49.374041][ T6828] l2cap_sock_release+0x63/0x190 [ 49.378952][ T6828] sock_close+0xd8/0x260 [ 49.383187][ T6828] ? sock_mmap+0x90/0x90 [ 49.387416][ T6828] __fput+0x2f0/0x750 [ 49.391435][ T6828] task_work_run+0x137/0x1c0 [ 49.396020][ T6828] do_exit+0x601/0x1f80 [ 49.400159][ T6828] do_group_exit+0x161/0x2d0 [ 49.404743][ T6828] get_signal+0x139b/0x1d30 [ 49.409220][ T6828] ? l2cap_sock_connect+0x505/0x690 [ 49.414415][ T6828] ? lockdep_hardirqs_on+0x49/0xf0 [ 49.419506][ T6828] do_signal+0x33/0x610 [ 49.423678][ T6828] ? __prepare_exit_to_usermode+0x6d/0x1b0 [ 49.429467][ T6828] __prepare_exit_to_usermode+0xc3/0x1b0 [ 49.435076][ T6828] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 49.441114][ T6828] do_syscall_64+0x7f/0xe0 [ 49.445513][ T6828] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 49.451396][ T6828] RIP: 0033:0x446d89 [ 49.455278][ T6828] Code: Bad RIP value. [ 49.459320][ T6828] RSP: 002b:00007ffe944097d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 49.467712][ T6828] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d89 [ 49.475677][ T6828] RDX: 0000000000000080 RSI: 00000000200000c0 RDI: 0000000000000004 [ 49.483627][ T6828] RBP: 00007ffe94409810 R08: 0000000000000000 R09: 00000000000000ff [ 49.491573][ T6828] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 [ 49.499629][ T6828] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 49.508822][ T6828] Kernel Offset: disabled [ 49.513377][ T6828] Rebooting in 86400 seconds..