Warning: Permanently added '10.128.0.211' (ECDSA) to the list of known hosts. executing program executing program executing program syzkaller login: [ 84.957210][ T9666] ------------[ cut here ]------------ [ 84.963015][ T9666] ODEBUG: free active (active state 0) object type: timer_list hint: rfcomm_dlc_timeout+0x0/0xe0 [ 84.973823][ T9666] WARNING: CPU: 0 PID: 9666 at lib/debugobjects.c:481 debug_print_object+0x168/0x250 [ 84.983270][ T9666] Kernel panic - not syncing: panic_on_warn set ... [ 84.989849][ T9666] CPU: 0 PID: 9666 Comm: syz-executor168 Not tainted 5.5.0-rc2-next-20191220-syzkaller #0 [ 84.999733][ T9666] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 85.009787][ T9666] Call Trace: [ 85.013072][ T9666] dump_stack+0x197/0x210 [ 85.017406][ T9666] ? debug_print_object+0x110/0x250 [ 85.022592][ T9666] panic+0x2e3/0x75c [ 85.026489][ T9666] ? add_taint.cold+0x16/0x16 [ 85.031153][ T9666] ? __kasan_check_write+0x14/0x20 [ 85.036248][ T9666] ? __warn.cold+0x14/0x3e [ 85.040650][ T9666] ? __warn+0xd9/0x1cf [ 85.044721][ T9666] ? debug_print_object+0x168/0x250 [ 85.049932][ T9666] __warn.cold+0x2f/0x3e [ 85.054167][ T9666] ? debug_print_object+0x168/0x250 [ 85.059349][ T9666] report_bug+0x289/0x300 [ 85.064203][ T9666] do_error_trap+0x11b/0x200 [ 85.068785][ T9666] do_invalid_op+0x37/0x50 [ 85.073365][ T9666] ? debug_print_object+0x168/0x250 [ 85.078562][ T9666] invalid_op+0x23/0x30 [ 85.082727][ T9666] RIP: 0010:debug_print_object+0x168/0x250 [ 85.088548][ T9666] Code: dd c0 24 70 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 8b 14 dd c0 24 70 88 48 c7 c7 20 1a 70 88 e8 67 6c b1 fd <0f> 0b 83 05 53 2d ed 06 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3 [ 85.108187][ T9666] RSP: 0018:ffffc90001f77a48 EFLAGS: 00010086 [ 85.114260][ T9666] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 85.122257][ T9666] RDX: 0000000000000000 RSI: ffffffff815e9f66 RDI: fffff520003eef3b [ 85.130414][ T9666] RBP: ffffc90001f77a88 R08: ffff8880a8a201c0 R09: ffffed1015d045c9 [ 85.138377][ T9666] R10: ffffed1015d045c8 R11: ffff8880ae822e43 R12: 0000000000000001 [ 85.146348][ T9666] R13: ffffffff899ba4a0 R14: ffffffff81648510 R15: ffff8880a2962118 [ 85.154336][ T9666] ? calc_wheel_index+0x220/0x220 [ 85.159352][ T9666] ? vprintk_func+0x86/0x189 [ 85.163951][ T9666] ? debug_print_object+0x168/0x250 [ 85.169139][ T9666] debug_check_no_obj_freed+0x2d4/0x43f [ 85.174685][ T9666] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 85.180233][ T9666] kfree+0xf8/0x2c0 [ 85.184038][ T9666] rfcomm_dlc_free+0x20/0x30 [ 85.188647][ T9666] rfcomm_dev_ioctl+0x1ba7/0x1e90 [ 85.193671][ T9666] ? mark_held_locks+0xa4/0xf0 [ 85.198443][ T9666] ? __local_bh_enable_ip+0x15a/0x270 [ 85.203825][ T9666] ? rfcomm_tty_install+0x1e0/0x1e0 [ 85.209046][ T9666] ? lock_sock_nested+0x9a/0x120 [ 85.213983][ T9666] ? trace_hardirqs_on+0x67/0x240 [ 85.219006][ T9666] ? __local_bh_enable_ip+0x15a/0x270 [ 85.224373][ T9666] rfcomm_sock_ioctl+0x90/0xb0 [ 85.229238][ T9666] sock_do_ioctl+0xd8/0x2f0 [ 85.233750][ T9666] ? compat_ifr_data_ioctl+0x160/0x160 [ 85.239212][ T9666] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 85.245272][ T9666] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 85.251605][ T9666] ? do_vfs_ioctl+0x11b/0x1340 [ 85.256366][ T9666] ? ioctl_file_clone+0x180/0x180 [ 85.261384][ T9666] sock_ioctl+0x3ed/0x790 [ 85.265698][ T9666] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.271926][ T9666] ? dlci_ioctl_set+0x40/0x40 [ 85.276597][ T9666] ? tomoyo_file_ioctl+0x23/0x30 [ 85.281537][ T9666] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.287767][ T9666] ? security_file_ioctl+0x8d/0xc0 [ 85.293563][ T9666] ? dlci_ioctl_set+0x40/0x40 [ 85.298228][ T9666] ksys_ioctl+0x123/0x180 [ 85.302545][ T9666] __x64_sys_ioctl+0x73/0xb0 [ 85.307141][ T9666] do_syscall_64+0xfa/0x790 [ 85.311637][ T9666] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.317524][ T9666] RIP: 0033:0x4412b9 [ 85.321403][ T9666] Code: e8 fc ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 9b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 85.340997][ T9666] RSP: 002b:00007ffe69e8bdd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 85.349400][ T9666] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412b9 [ 85.357366][ T9666] RDX: 0000000020000100 RSI: 00000000400452c8 RDI: 0000000000000004 [ 85.365344][ T9666] RBP: 0000000000014bb2 R08: 00000000004002c8 R09: 00000000004002c8 [ 85.373313][ T9666] R10: 00000000004002c8 R11: 0000000000000246 R12: 00000000004020e0 [ 85.381286][ T9666] R13: 0000000000402170 R14: 0000000000000000 R15: 0000000000000000 [ 85.390982][ T9666] Kernel Offset: disabled [ 85.395510][ T9666] Rebooting in 86400 seconds..