Warning: Permanently added '10.128.0.72' (ECDSA) to the list of known hosts. syzkaller login: [ 66.952591][ T6878] IPVS: ftp: loaded support on port[0] = 21 executing program [ 70.143473][ T6763] Bluetooth: hci0: command 0x0409 tx timeout [ 72.222861][ T3913] Bluetooth: hci0: command 0x041b tx timeout [ 73.107397][ T6908] ------------[ cut here ]------------ [ 73.113113][ T6908] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 [ 73.122975][ T6908] WARNING: CPU: 1 PID: 6908 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 73.132406][ T6908] Kernel panic - not syncing: panic_on_warn set ... [ 73.139059][ T6908] CPU: 1 PID: 6908 Comm: syz-executor452 Not tainted 5.8.0-rc7-next-20200731-syzkaller #0 [ 73.148920][ T6908] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.158966][ T6908] Call Trace: [ 73.162247][ T6908] dump_stack+0x18f/0x20d [ 73.166558][ T6908] panic+0x2e3/0x75c [ 73.170480][ T6908] ? __warn_printk+0xf3/0xf3 [ 73.175053][ T6908] ? __warn.cold+0x5/0x4a [ 73.179358][ T6908] ? __warn+0xd6/0x1f2 [ 73.183416][ T6908] ? debug_print_object+0x160/0x250 [ 73.188596][ T6908] __warn.cold+0x20/0x4a [ 73.192830][ T6908] ? debug_print_object+0x160/0x250 [ 73.198031][ T6908] report_bug+0x1bd/0x210 [ 73.202376][ T6908] handle_bug+0x38/0x90 [ 73.206538][ T6908] ? __warn_printk+0xc6/0xf3 [ 73.211136][ T6908] exc_invalid_op+0x14/0x40 [ 73.215652][ T6908] asm_exc_invalid_op+0x12/0x20 [ 73.220511][ T6908] RIP: 0010:debug_print_object+0x160/0x250 [ 73.226318][ T6908] 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 [ 73.245934][ T6908] RSP: 0018:ffffc900049a7570 EFLAGS: 00010086 [ 73.252024][ T6908] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 73.259997][ T6908] RDX: ffff88809454a4c0 RSI: ffffffff815d86e7 RDI: fffff52000934ea0 [ 73.267968][ T6908] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae720f8b [ 73.275931][ T6908] R10: 0000000000000000 R11: 203a47554245444f R12: ffffffff89c5e220 [ 73.284056][ T6908] R13: ffffffff81639390 R14: ffff8880945c0200 R15: 1ffff92000934eb9 [ 73.292011][ T6908] ? calc_wheel_index+0x3f0/0x3f0 [ 73.297016][ T6908] ? vprintk_func+0x97/0x1a6 [ 73.301588][ T6908] debug_object_assert_init+0x1f4/0x2e0 [ 73.307112][ T6908] ? find_held_lock+0x2d/0x110 [ 73.311850][ T6908] ? debug_object_init_on_stack+0x20/0x20 [ 73.317548][ T6908] ? __queue_work+0x61a/0xf20 [ 73.322202][ T6908] ? lock_downgrade+0x830/0x830 [ 73.327034][ T6908] del_timer+0x6d/0x110 [ 73.331166][ T6908] ? detach_if_pending+0x4d0/0x4d0 [ 73.336376][ T6908] ? __queue_work+0x63c/0xf20 [ 73.341031][ T6908] ? lockdep_hardirqs_off+0x7e/0xb0 [ 73.346208][ T6908] ? trace_hardirqs_off+0x76/0x210 [ 73.351297][ T6908] cancel_delayed_work+0xe0/0x450 [ 73.356305][ T6908] ? mod_delayed_work_on+0x2e0/0x2e0 [ 73.361581][ T6908] ? lockdep_hardirqs_on+0x76/0xf0 [ 73.366670][ T6908] ? queue_delayed_work_on+0x12f/0x210 [ 73.372105][ T6908] l2cap_chan_del+0x541/0x1300 [ 73.376847][ T6908] l2cap_chan_close+0x118/0xb10 [ 73.381673][ T6908] ? l2cap_retransmit_all+0x760/0x760 [ 73.387019][ T6908] ? __mutex_unlock_slowpath+0xe2/0x610 [ 73.392550][ T6908] ? mark_held_locks+0x9f/0xe0 [ 73.397299][ T6908] ? wait_for_completion+0x260/0x260 [ 73.402570][ T6908] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 73.408553][ T6908] ? l2cap_sock_shutdown+0x2c4/0xe90 [ 73.413820][ T6908] ? trace_hardirqs_on+0x5f/0x220 [ 73.418822][ T6908] l2cap_sock_shutdown+0x3b8/0xe90 [ 73.423950][ T6908] ? lock_acquire+0x1f1/0xad0 [ 73.428605][ T6908] ? bt_sock_unlink+0x1d/0x1c0 [ 73.433385][ T6908] ? l2cap_sock_suspend_cb+0x80/0x80 [ 73.438650][ T6908] ? find_held_lock+0x2d/0x110 [ 73.443394][ T6908] ? l2cap_sock_release+0x56/0x1d0 [ 73.448486][ T6908] ? lock_downgrade+0x830/0x830 [ 73.453401][ T6908] ? do_raw_read_unlock+0x70/0x70 [ 73.458408][ T6908] l2cap_sock_release+0x63/0x1d0 [ 73.463326][ T6908] __sock_release+0xcd/0x280 [ 73.467897][ T6908] sock_close+0x18/0x20 [ 73.472029][ T6908] __fput+0x285/0x920 [ 73.475989][ T6908] ? __sock_release+0x280/0x280 [ 73.480820][ T6908] task_work_run+0xdd/0x190 [ 73.485301][ T6908] do_exit+0xb7d/0x29f0 [ 73.489434][ T6908] ? lock_acquire+0x1f1/0xad0 [ 73.494096][ T6908] ? find_held_lock+0x2d/0x110 [ 73.498839][ T6908] ? mm_update_next_owner+0x7a0/0x7a0 [ 73.504187][ T6908] ? get_signal+0x332/0x1ee0 [ 73.508756][ T6908] ? lock_downgrade+0x830/0x830 [ 73.513586][ T6908] ? lock_is_held_type+0xbb/0xf0 [ 73.518500][ T6908] do_group_exit+0x125/0x310 [ 73.523070][ T6908] get_signal+0x40b/0x1ee0 [ 73.527459][ T6908] ? lockdep_hardirqs_on+0x76/0xf0 [ 73.532556][ T6908] ? __local_bh_enable_ip+0xd1/0x190 [ 73.537838][ T6908] ? l2cap_sock_connect+0x379/0x690 [ 73.543026][ T6908] arch_do_signal+0x82/0x2520 [ 73.547686][ T6908] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 73.552863][ T6908] ? __sys_connect_file+0x4e/0x1a0 [ 73.557998][ T6908] ? copy_siginfo_to_user32+0xa0/0xa0 [ 73.563364][ T6908] ? __sys_connect+0x109/0x190 [ 73.568107][ T6908] ? __sys_connect_file+0x1a0/0x1a0 [ 73.573287][ T6908] ? exit_to_user_mode_prepare+0xb9/0x1c0 [ 73.579005][ T6908] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 73.584974][ T6908] exit_to_user_mode_prepare+0x15d/0x1c0 [ 73.590586][ T6908] syscall_exit_to_user_mode+0x59/0x2b0 [ 73.596115][ T6908] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.601985][ T6908] RIP: 0033:0x446d89 [ 73.605895][ T6908] Code: Bad RIP value. [ 73.609982][ T6908] RSP: 002b:00007ffe6f0aaa58 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 73.618372][ T6908] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d89 [ 73.626332][ T6908] RDX: 0000000000000080 RSI: 00000000200000c0 RDI: 0000000000000004 [ 73.634280][ T6908] RBP: 00007ffe6f0aaa90 R08: 0000000000000000 R09: 00000000000000ff [ 73.642231][ T6908] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 [ 73.650279][ T6908] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 73.659658][ T6908] Kernel Offset: disabled [ 73.664034][ T6908] Rebooting in 86400 seconds..