Warning: Permanently added '10.128.0.252' (ECDSA) to the list of known hosts. syzkaller login: [ 63.343300][ T6868] IPVS: ftp: loaded support on port[0] = 21 executing program [ 66.488443][ T6766] Bluetooth: hci0: command 0x0409 tx timeout [ 68.567829][ T6766] Bluetooth: hci0: command 0x041b tx timeout [ 69.444936][ T6895] ------------[ cut here ]------------ [ 69.450703][ T6895] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 [ 69.460570][ T6895] WARNING: CPU: 0 PID: 6895 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 69.470002][ T6895] Kernel panic - not syncing: panic_on_warn set ... [ 69.477007][ T6895] CPU: 0 PID: 6895 Comm: syz-executor972 Not tainted 5.8.0-rc7-next-20200731-syzkaller #0 [ 69.486894][ T6895] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.497101][ T6895] Call Trace: [ 69.500378][ T6895] dump_stack+0x18f/0x20d [ 69.504693][ T6895] panic+0x2e3/0x75c [ 69.508586][ T6895] ? __warn_printk+0xf3/0xf3 [ 69.513159][ T6895] ? __warn.cold+0x5/0x4a [ 69.517469][ T6895] ? __warn+0xd6/0x1f2 [ 69.521546][ T6895] ? debug_print_object+0x160/0x250 [ 69.526745][ T6895] __warn.cold+0x20/0x4a [ 69.530988][ T6895] ? debug_print_object+0x160/0x250 [ 69.536184][ T6895] report_bug+0x1bd/0x210 [ 69.540514][ T6895] handle_bug+0x38/0x90 [ 69.544677][ T6895] ? __warn_printk+0xc6/0xf3 [ 69.549278][ T6895] exc_invalid_op+0x14/0x40 [ 69.553797][ T6895] asm_exc_invalid_op+0x12/0x20 [ 69.558892][ T6895] RIP: 0010:debug_print_object+0x160/0x250 [ 69.564966][ T6895] Code: dd 60 16 94 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd 60 16 94 88 48 c7 c7 c0 0b 94 88 e8 92 36 a6 fd <0f> 0b 83 05 b3 d2 1a 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 69.584664][ T6895] RSP: 0018:ffffc9000359f570 EFLAGS: 00010086 [ 69.590742][ T6895] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 69.598806][ T6895] RDX: ffff888089448200 RSI: ffffffff815d86e7 RDI: fffff520006b3ea0 [ 69.606782][ T6895] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae620f8b [ 69.614751][ T6895] R10: 0000000000000000 R11: 203a47554245444f R12: ffffffff89c5e220 [ 69.622795][ T6895] R13: ffffffff81639390 R14: ffff888093f9b200 R15: 1ffff920006b3eb9 [ 69.631123][ T6895] ? calc_wheel_index+0x3f0/0x3f0 [ 69.636142][ T6895] ? vprintk_func+0x97/0x1a6 [ 69.640719][ T6895] debug_object_assert_init+0x1f4/0x2e0 [ 69.646253][ T6895] ? find_held_lock+0x2d/0x110 [ 69.651254][ T6895] ? debug_object_init_on_stack+0x20/0x20 [ 69.656982][ T6895] ? __queue_work+0x61a/0xf20 [ 69.661654][ T6895] ? lock_downgrade+0x830/0x830 [ 69.666850][ T6895] del_timer+0x6d/0x110 [ 69.671100][ T6895] ? detach_if_pending+0x4d0/0x4d0 [ 69.676451][ T6895] ? __queue_work+0x63c/0xf20 [ 69.681112][ T6895] ? lockdep_hardirqs_off+0x7e/0xb0 [ 69.686289][ T6895] ? trace_hardirqs_off+0x76/0x210 [ 69.691470][ T6895] cancel_delayed_work+0xe0/0x450 [ 69.696475][ T6895] ? mod_delayed_work_on+0x2e0/0x2e0 [ 69.701742][ T6895] ? lockdep_hardirqs_on+0x76/0xf0 [ 69.706838][ T6895] ? queue_delayed_work_on+0x12f/0x210 [ 69.712388][ T6895] l2cap_chan_del+0x541/0x1300 [ 69.717224][ T6895] l2cap_chan_close+0x118/0xb10 [ 69.722060][ T6895] ? l2cap_retransmit_all+0x760/0x760 [ 69.727424][ T6895] ? __mutex_unlock_slowpath+0xe2/0x610 [ 69.732949][ T6895] ? mark_held_locks+0x9f/0xe0 [ 69.737694][ T6895] ? wait_for_completion+0x260/0x260 [ 69.742959][ T6895] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 69.748935][ T6895] ? l2cap_sock_shutdown+0x2c4/0xe90 [ 69.754197][ T6895] ? trace_hardirqs_on+0x5f/0x220 [ 69.759288][ T6895] l2cap_sock_shutdown+0x3b8/0xe90 [ 69.764377][ T6895] ? lock_acquire+0x1f1/0xad0 [ 69.769058][ T6895] ? bt_sock_unlink+0x1d/0x1c0 [ 69.773800][ T6895] ? l2cap_sock_suspend_cb+0x80/0x80 [ 69.779064][ T6895] ? find_held_lock+0x2d/0x110 [ 69.783831][ T6895] ? l2cap_sock_release+0x56/0x1d0 [ 69.789022][ T6895] ? lock_downgrade+0x830/0x830 [ 69.793868][ T6895] ? do_raw_read_unlock+0x70/0x70 [ 69.798994][ T6895] l2cap_sock_release+0x63/0x1d0 [ 69.803912][ T6895] __sock_release+0xcd/0x280 [ 69.808738][ T6895] sock_close+0x18/0x20 [ 69.812961][ T6895] __fput+0x285/0x920 [ 69.816939][ T6895] ? __sock_release+0x280/0x280 [ 69.821796][ T6895] task_work_run+0xdd/0x190 [ 69.826297][ T6895] do_exit+0xb7d/0x29f0 [ 69.832032][ T6895] ? lock_acquire+0x1f1/0xad0 [ 69.836696][ T6895] ? find_held_lock+0x2d/0x110 [ 69.841442][ T6895] ? mm_update_next_owner+0x7a0/0x7a0 [ 69.846793][ T6895] ? get_signal+0x332/0x1ee0 [ 69.851365][ T6895] ? lock_downgrade+0x830/0x830 [ 69.856197][ T6895] ? lock_is_held_type+0xbb/0xf0 [ 69.861118][ T6895] do_group_exit+0x125/0x310 [ 69.865696][ T6895] get_signal+0x40b/0x1ee0 [ 69.870187][ T6895] ? lockdep_hardirqs_on+0x76/0xf0 [ 69.875365][ T6895] ? __local_bh_enable_ip+0xd1/0x190 [ 69.880730][ T6895] ? l2cap_sock_connect+0x379/0x690 [ 69.885909][ T6895] arch_do_signal+0x82/0x2520 [ 69.890568][ T6895] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 69.895933][ T6895] ? __sys_connect_file+0x4e/0x1a0 [ 69.901053][ T6895] ? copy_siginfo_to_user32+0xa0/0xa0 [ 69.906408][ T6895] ? __sys_connect+0x109/0x190 [ 69.911174][ T6895] ? __sys_connect_file+0x1a0/0x1a0 [ 69.916375][ T6895] ? exit_to_user_mode_prepare+0xb9/0x1c0 [ 69.922093][ T6895] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 69.928060][ T6895] exit_to_user_mode_prepare+0x15d/0x1c0 [ 69.933677][ T6895] syscall_exit_to_user_mode+0x59/0x2b0 [ 69.939222][ T6895] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 69.945090][ T6895] RIP: 0033:0x446dc9 [ 69.948955][ T6895] Code: Bad RIP value. [ 69.953006][ T6895] RSP: 002b:00007ffe9b5de868 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 69.961744][ T6895] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446dc9 [ 69.969886][ T6895] RDX: 000000000000000e RSI: 0000000020000000 RDI: 0000000000000004 [ 69.977898][ T6895] RBP: 00007ffe9b5de8a0 R08: 0000000000000000 R09: 00000000000000ff [ 69.985914][ T6895] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 [ 69.994128][ T6895] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 70.003463][ T6895] Kernel Offset: disabled [ 70.007838][ T6895] Rebooting in 86400 seconds..