[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Started OpenBSD Secure Shell server. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.215' (ECDSA) to the list of known hosts. syzkaller login: [ 50.943036][ T6861] IPVS: ftp: loaded support on port[0] = 21 executing program [ 54.111098][ T2627] Bluetooth: hci0: command 0x0409 tx timeout [ 56.190540][ T2641] Bluetooth: hci0: command 0x041b tx timeout [ 57.068924][ T6889] ------------[ cut here ]------------ [ 57.074553][ T6889] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 [ 57.084386][ T6889] WARNING: CPU: 0 PID: 6889 at lib/debugobjects.c:488 debug_object_assert_init+0x1fa/0x250 [ 57.094352][ T6889] Kernel panic - not syncing: panic_on_warn set ... [ 57.100931][ T6889] CPU: 0 PID: 6889 Comm: syz-executor259 Not tainted 5.8.0-rc7-syzkaller #0 [ 57.109810][ T6889] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.119845][ T6889] Call Trace: [ 57.123132][ T6889] dump_stack+0x1f0/0x31e [ 57.127577][ T6889] panic+0x264/0x7a0 [ 57.131546][ T6889] ? __warn+0x102/0x250 [ 57.135713][ T6889] ? debug_object_assert_init+0x1fa/0x250 [ 57.142288][ T6889] ? debug_object_assert_init+0x1fa/0x250 [ 57.148021][ T6889] __warn+0x227/0x250 [ 57.152028][ T6889] ? debug_object_assert_init+0x1fa/0x250 [ 57.157756][ T6889] report_bug+0x1b1/0x2e0 [ 57.162207][ T6889] handle_bug+0x42/0x80 [ 57.166354][ T6889] exc_invalid_op+0x16/0x40 [ 57.170840][ T6889] asm_exc_invalid_op+0x12/0x20 [ 57.176214][ T6889] RIP: 0010:debug_object_assert_init+0x1fa/0x250 [ 57.183380][ T6889] Code: e8 ab ec 11 fe 4c 8b 45 00 48 c7 c7 0f b7 14 89 48 c7 c6 09 b6 14 89 48 c7 c2 22 30 2c 89 31 c9 49 89 d9 31 c0 e8 16 9e a4 fd <0f> 0b ff 05 02 ca eb 05 48 83 c5 38 48 89 e8 48 c1 e8 03 42 80 3c [ 57.203559][ T6889] RSP: 0018:ffffc90001477828 EFLAGS: 00010046 [ 57.209866][ T6889] RAX: 8d1db38e33234900 RBX: 0000000000000000 RCX: ffff888091cfe200 [ 57.218224][ T6889] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 57.226279][ T6889] RBP: ffffffff894edb20 R08: ffffffff815dd389 R09: ffffed1015d041c3 [ 57.234233][ T6889] R10: ffffed1015d041c3 R11: 0000000000000000 R12: dffffc0000000000 [ 57.242196][ T6889] R13: ffff8880a687e200 R14: 0000000000000002 R15: ffffffff8ba2a2a0 [ 57.250160][ T6889] ? vprintk_emit+0x339/0x3c0 [ 57.254819][ T6889] ? debug_object_assert_init+0x1fa/0x250 [ 57.260516][ T6889] del_timer+0x2f/0x340 [ 57.264650][ T6889] ? trace_lock_release+0x137/0x1a0 [ 57.269817][ T6889] ? trace_irq_disable_rcuidle+0x1f/0x1c0 [ 57.275512][ T6889] try_to_grab_pending+0xba/0x9f0 [ 57.280530][ T6889] ? lockdep_hardirqs_on_prepare+0x425/0x6e0 [ 57.286503][ T6889] cancel_delayed_work+0x37/0x2b0 [ 57.292469][ T6889] l2cap_chan_del+0x5bf/0x760 [ 57.297120][ T6889] l2cap_chan_close+0x7bf/0xae0 [ 57.301945][ T6889] l2cap_sock_shutdown+0x39f/0x700 [ 57.307029][ T6889] l2cap_sock_release+0x63/0x190 [ 57.311961][ T6889] sock_close+0xd8/0x260 [ 57.316302][ T6889] ? sock_mmap+0x90/0x90 [ 57.320526][ T6889] __fput+0x2f0/0x750 [ 57.324627][ T6889] task_work_run+0x137/0x1c0 [ 57.329385][ T6889] do_exit+0x601/0x1f80 [ 57.333664][ T6889] do_group_exit+0x161/0x2d0 [ 57.338469][ T6889] get_signal+0x139b/0x1d30 [ 57.343021][ T6889] ? l2cap_sock_connect+0x505/0x690 [ 57.348244][ T6889] do_signal+0x33/0x610 [ 57.352382][ T6889] ? __prepare_exit_to_usermode+0x81/0x1e0 [ 57.358198][ T6889] __prepare_exit_to_usermode+0xd7/0x1e0 [ 57.363836][ T6889] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 57.369874][ T6889] do_syscall_64+0x7f/0xe0 [ 57.374300][ T6889] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 57.380179][ T6889] RIP: 0033:0x446d69 [ 57.384054][ T6889] Code: Bad RIP value. [ 57.388241][ T6889] RSP: 002b:00007ffc9b702c28 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 57.396729][ T6889] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d69 [ 57.405370][ T6889] RDX: 000000000000000e RSI: 0000000020000040 RDI: 0000000000000004 [ 57.413491][ T6889] RBP: 00007ffc9b702c60 R08: 0000000000000000 R09: 00000000000000ff [ 57.421446][ T6889] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 [ 57.429530][ T6889] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 57.438983][ T6889] Kernel Offset: disabled [ 57.444078][ T6889] Rebooting in 86400 seconds..