Warning: Permanently added '10.128.1.25' (ECDSA) to the list of known hosts. syzkaller login: [ 45.151935] audit: type=1400 audit(1596155314.944:8): avc: denied { execmem } for pid=6471 comm="syz-executor977" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 45.168041] IPVS: ftp: loaded support on port[0] = 21 executing program [ 48.304481] Bluetooth: hci0: command 0x0409 tx timeout [ 50.383483] Bluetooth: hci0: command 0x041b tx timeout [ 51.260405] ------------[ cut here ]------------ [ 51.265372] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: (null) [ 51.275671] WARNING: CPU: 0 PID: 6502 at lib/debugobjects.c:325 debug_print_object+0x160/0x250 [ 51.284442] Kernel panic - not syncing: panic_on_warn set ... [ 51.284442] [ 51.291830] CPU: 0 PID: 6502 Comm: syz-executor977 Not tainted 4.19.135-syzkaller #0 [ 51.299691] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.309029] Call Trace: [ 51.311620] dump_stack+0x1fc/0x2fe [ 51.315235] panic+0x26a/0x50e [ 51.318439] ? __warn_printk+0xf3/0xf3 [ 51.322315] ? debug_print_object+0x160/0x250 [ 51.326813] ? __probe_kernel_read+0x16c/0x1b0 [ 51.331387] ? __warn.cold+0x5/0x61 [ 51.335045] ? __warn+0xe4/0x200 [ 51.338409] ? debug_print_object+0x160/0x250 [ 51.342888] __warn.cold+0x20/0x61 [ 51.346462] ? debug_print_object+0x160/0x250 [ 51.350973] report_bug+0x262/0x2b0 [ 51.354593] do_error_trap+0x1d7/0x310 [ 51.358466] ? math_error+0x310/0x310 [ 51.362250] ? irq_work_claim+0xa6/0xc0 [ 51.366836] ? irq_work_queue+0x29/0x80 [ 51.370808] ? wake_up_klogd.part.0+0x8c/0xc0 [ 51.375315] ? trace_hardirqs_off_caller+0x69/0x210 [ 51.380316] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.385144] invalid_op+0x14/0x20 [ 51.388641] RIP: 0010:debug_print_object+0x160/0x250 [ 51.393729] Code: dd 40 13 cb 87 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd 40 13 cb 87 48 c7 c7 c0 08 cb 87 e8 db 0d dd fd <0f> 0b 83 05 e3 0c 4e 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 51.412611] RSP: 0018:ffff88809562f4d8 EFLAGS: 00010086 [ 51.417951] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 51.425203] RDX: 0000000000000000 RSI: ffffffff8154cf01 RDI: ffffed1012ac5e8d [ 51.432465] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 [ 51.439713] R10: 0000000000000005 R11: ffffffff8ad3601b R12: ffffffff88da08e0 [ 51.446959] R13: ffffffff815a2ad0 R14: ffff8880898d8528 R15: 1ffff11012ac5ea6 [ 51.454233] ? calc_wheel_index+0x230/0x230 [ 51.458550] ? vprintk_func+0x81/0x17e [ 51.462419] ? debug_print_object+0x160/0x250 [ 51.466908] debug_object_assert_init+0x1f0/0x2e0 [ 51.471732] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 51.476815] ? debug_object_free+0x380/0x380 [ 51.481202] ? __queue_work+0x5f1/0x1100 [ 51.485258] del_timer+0x6d/0x100 [ 51.488693] ? run_timer_softirq+0x670/0x670 [ 51.493091] ? do_raw_spin_unlock+0x171/0x230 [ 51.497613] ? _raw_spin_unlock+0x29/0x40 [ 51.501743] ? trace_hardirqs_off+0x64/0x200 [ 51.506151] try_to_grab_pending+0x2b6/0x6f0 [ 51.510540] cancel_delayed_work+0x76/0x2c0 [ 51.514854] ? cancel_delayed_work_sync+0x20/0x20 [ 51.519690] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 51.524265] ? queue_delayed_work_on+0x122/0x200 [ 51.529002] l2cap_chan_del+0x53a/0x8e0 [ 51.532960] l2cap_chan_close+0x108/0x820 [ 51.537090] ? __set_monitor_timer+0x130/0x130 [ 51.541652] ? wait_for_completion_io+0x10/0x10 [ 51.546418] ? mark_held_locks+0xa6/0xf0 [ 51.550461] ? __local_bh_enable_ip+0x159/0x270 [ 51.555114] l2cap_sock_shutdown+0x85e/0xbd0 [ 51.559518] ? switch_task_namespaces+0xaa/0xc0 [ 51.564166] ? do_exit+0xbad/0x2b70 [ 51.567774] ? l2cap_skb_msg_name+0x120/0x120 [ 51.572249] ? exit_to_usermode_loop+0x204/0x2a0 [ 51.576992] ? do_syscall_64+0x538/0x620 [ 51.581040] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.586386] ? mark_held_locks+0xf0/0xf0 [ 51.590433] ? l2cap_sock_release+0x56/0x190 [ 51.594838] ? lock_downgrade+0x720/0x720 [ 51.598967] ? do_raw_write_lock+0xb8/0x1e0 [ 51.603271] l2cap_sock_release+0x63/0x190 [ 51.607501] __sock_release+0xcd/0x2a0 [ 51.611368] ? __sock_release+0x2a0/0x2a0 [ 51.615506] sock_close+0x15/0x20 [ 51.618941] __fput+0x2ce/0x890 [ 51.622205] task_work_run+0x148/0x1c0 [ 51.626076] do_exit+0xbb2/0x2b70 [ 51.629509] ? mark_held_locks+0xf0/0xf0 [ 51.633573] ? mm_update_next_owner+0x650/0x650 [ 51.638227] ? get_signal+0x388/0x1f70 [ 51.642110] ? lock_downgrade+0x720/0x720 [ 51.646237] ? lock_acquire+0x170/0x3c0 [ 51.650192] do_group_exit+0x125/0x310 [ 51.654064] get_signal+0x3f2/0x1f70 [ 51.657759] ? __local_bh_enable_ip+0x159/0x270 [ 51.662410] do_signal+0x8f/0x1670 [ 51.665944] ? l2cap_sock_accept+0x4d0/0x4d0 [ 51.670332] ? __local_bh_enable_ip+0x159/0x270 [ 51.674983] ? selinux_netlbl_socket_connect+0x2e/0x40 [ 51.680238] ? setup_sigcontext+0x820/0x820 [ 51.684544] ? l2cap_sock_accept+0x4d0/0x4d0 [ 51.688943] ? __ia32_sys_accept+0xb0/0xb0 [ 51.693165] ? up_read+0x17/0x110 [ 51.696599] ? __do_page_fault+0x1ca/0xde0 [ 51.700814] ? exit_to_usermode_loop+0x36/0x2a0 [ 51.705466] exit_to_usermode_loop+0x204/0x2a0 [ 51.710029] do_syscall_64+0x538/0x620 [ 51.713901] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.719069] RIP: 0033:0x446d69 [ 51.722249] Code: Bad RIP value. [ 51.725590] RSP: 002b:00007ffe28e7ee08 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 51.733274] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d69 [ 51.740521] RDX: 000000000000000e RSI: 0000000020000000 RDI: 0000000000000004 [ 51.747782] RBP: 00007ffe28e7ee40 R08: 0000000000000000 R09: 00000000000000ff [ 51.755029] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 [ 51.762275] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 51.770861] Kernel Offset: disabled [ 51.774536] Rebooting in 86400 seconds..