Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.8' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 57.983451][ T6844] IPVS: ftp: loaded support on port[0] = 21 [ 59.994648][ T17] Bluetooth: hci0: command 0x0409 tx timeout [ 62.073644][ T17] Bluetooth: hci0: command 0x041b tx timeout [ 63.039042][ T6876] ------------[ cut here ]------------ [ 63.044840][ T6876] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 [ 63.054706][ T6876] WARNING: CPU: 1 PID: 6876 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 63.064145][ T6876] Kernel panic - not syncing: panic_on_warn set ... [ 63.070755][ T6876] CPU: 1 PID: 6876 Comm: syz-executor865 Not tainted 5.9.0-rc1-syzkaller #0 [ 63.079426][ T6876] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.089483][ T6876] Call Trace: [ 63.092785][ T6876] dump_stack+0x18f/0x20d [ 63.097118][ T6876] panic+0x2e3/0x75c [ 63.101070][ T6876] ? __warn_printk+0xf3/0xf3 [ 63.107225][ T6876] ? console_unlock+0x7f0/0xf30 [ 63.112083][ T6876] ? __warn.cold+0x5/0x4a [ 63.116418][ T6876] ? __warn+0xd6/0x1f2 [ 63.120496][ T6876] ? debug_print_object+0x160/0x250 [ 63.125702][ T6876] __warn.cold+0x20/0x4a [ 63.129958][ T6876] ? debug_print_object+0x160/0x250 [ 63.135167][ T6876] report_bug+0x1bd/0x210 [ 63.139509][ T6876] handle_bug+0x38/0x90 [ 63.143673][ T6876] ? __warn_printk+0xc6/0xf3 [ 63.148262][ T6876] exc_invalid_op+0x14/0x40 [ 63.152745][ T6876] asm_exc_invalid_op+0x12/0x20 [ 63.157577][ T6876] RIP: 0010:debug_print_object+0x160/0x250 [ 63.163362][ T6876] Code: dd a0 1d 94 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd a0 1d 94 88 48 c7 c7 00 13 94 88 e8 02 85 a6 fd <0f> 0b 83 05 03 83 13 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 63.183088][ T6876] RSP: 0018:ffffc900055b7570 EFLAGS: 00010086 [ 63.189131][ T6876] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 63.197085][ T6876] RDX: ffff888092ec6500 RSI: ffffffff815dafc7 RDI: fffff52000ab6ea0 [ 63.205067][ T6876] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae720f8b [ 63.213048][ T6876] R10: 0000000000000000 R11: 0000000037383654 R12: ffffffff89be28e0 [ 63.221003][ T6876] R13: ffffffff816386c0 R14: ffff8880a6f26200 R15: 1ffff92000ab6eb9 [ 63.228978][ T6876] ? calc_wheel_index+0x3f0/0x3f0 [ 63.234005][ T6876] ? vprintk_func+0x97/0x1a6 [ 63.238580][ T6876] debug_object_assert_init+0x1f4/0x2e0 [ 63.244104][ T6876] ? find_held_lock+0x2d/0x110 [ 63.248866][ T6876] ? debug_object_init_on_stack+0x20/0x20 [ 63.254563][ T6876] ? __queue_work+0x61a/0xf20 [ 63.259216][ T6876] ? lock_downgrade+0x830/0x830 [ 63.264064][ T6876] del_timer+0x6d/0x110 [ 63.268271][ T6876] ? detach_if_pending+0x4d0/0x4d0 [ 63.273373][ T6876] ? __queue_work+0x63c/0xf20 [ 63.278063][ T6876] ? lockdep_hardirqs_off+0x89/0xc0 [ 63.283265][ T6876] ? trace_hardirqs_off+0x76/0x210 [ 63.288365][ T6876] cancel_delayed_work+0xe0/0x450 [ 63.293370][ T6876] ? mod_delayed_work_on+0x2e0/0x2e0 [ 63.298637][ T6876] ? lockdep_hardirqs_on+0x76/0xf0 [ 63.303776][ T6876] ? queue_delayed_work_on+0x12f/0x210 [ 63.309216][ T6876] l2cap_chan_del+0x541/0x1300 [ 63.313960][ T6876] l2cap_chan_close+0x118/0xb10 [ 63.318805][ T6876] ? l2cap_retransmit_all+0x760/0x760 [ 63.324153][ T6876] ? __mutex_unlock_slowpath+0xe2/0x610 [ 63.329675][ T6876] ? mark_held_locks+0x9f/0xe0 [ 63.334417][ T6876] ? wait_for_completion+0x260/0x260 [ 63.339791][ T6876] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 63.345891][ T6876] ? l2cap_sock_shutdown+0x2c4/0xe90 [ 63.351156][ T6876] ? trace_hardirqs_on+0x5f/0x220 [ 63.356167][ T6876] l2cap_sock_shutdown+0x3b8/0xe90 [ 63.361309][ T6876] ? lock_acquire+0x1f1/0xad0 [ 63.365967][ T6876] ? bt_sock_unlink+0x1d/0x1c0 [ 63.372012][ T6876] ? l2cap_sock_suspend_cb+0x80/0x80 [ 63.377323][ T6876] ? find_held_lock+0x2d/0x110 [ 63.382066][ T6876] ? l2cap_sock_release+0x56/0x1d0 [ 63.387159][ T6876] ? lock_downgrade+0x830/0x830 [ 63.391994][ T6876] ? do_raw_read_unlock+0x70/0x70 [ 63.397002][ T6876] l2cap_sock_release+0x63/0x1d0 [ 63.401934][ T6876] __sock_release+0xcd/0x280 [ 63.406521][ T6876] sock_close+0x18/0x20 [ 63.410671][ T6876] __fput+0x285/0x920 [ 63.414721][ T6876] ? __sock_release+0x280/0x280 [ 63.419551][ T6876] task_work_run+0xdd/0x190 [ 63.424035][ T6876] do_exit+0xb7d/0x29f0 [ 63.428194][ T6876] ? lock_acquire+0x1f1/0xad0 [ 63.432847][ T6876] ? find_held_lock+0x2d/0x110 [ 63.437592][ T6876] ? mm_update_next_owner+0x7a0/0x7a0 [ 63.443054][ T6876] ? get_signal+0x34f/0x1f00 [ 63.447624][ T6876] ? lock_downgrade+0x830/0x830 [ 63.452452][ T6876] ? lock_is_held_type+0xbb/0xf0 [ 63.457386][ T6876] do_group_exit+0x125/0x310 [ 63.461956][ T6876] get_signal+0x428/0x1f00 [ 63.466371][ T6876] ? __local_bh_enable_ip+0xd1/0x190 [ 63.471655][ T6876] arch_do_signal+0x82/0x2520 [ 63.476318][ T6876] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 63.481518][ T6876] ? __sys_connect_file+0x4e/0x1a0 [ 63.486625][ T6876] ? copy_siginfo_to_user32+0xa0/0xa0 [ 63.491979][ T6876] ? __sys_connect+0x10a/0x190 [ 63.496730][ T6876] ? __sys_connect_file+0x1a0/0x1a0 [ 63.501914][ T6876] ? exit_to_user_mode_prepare+0xb9/0x1c0 [ 63.507611][ T6876] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 63.513593][ T6876] exit_to_user_mode_prepare+0x15d/0x1c0 [ 63.519208][ T6876] syscall_exit_to_user_mode+0x59/0x2b0 [ 63.524737][ T6876] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 63.530631][ T6876] RIP: 0033:0x446d99 [ 63.534523][ T6876] Code: Bad RIP value. [ 63.538583][ T6876] RSP: 002b:00007ffe9f5606a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 63.546971][ T6876] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d99 [ 63.554943][ T6876] RDX: 000000000000000e RSI: 0000000020000080 RDI: 0000000000000004 [ 63.562891][ T6876] RBP: 0000000000000003 R08: 00000000000000ff R09: 00000000000000ff [ 63.570840][ T6876] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000001475850 [ 63.578809][ T6876] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 63.588167][ T6876] Kernel Offset: disabled [ 63.592535][ T6876] Rebooting in 86400 seconds..