Warning: Permanently added '10.128.0.4' (ECDSA) to the list of known hosts. syzkaller login: [ 41.194396] audit: type=1400 audit(1596402163.040:8): avc: denied { execmem } for pid=6455 comm="syz-executor240" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 41.208738] IPVS: ftp: loaded support on port[0] = 21 executing program [ 44.358696] Bluetooth: hci0: command 0x0409 tx timeout [ 46.437291] Bluetooth: hci0: command 0x041b tx timeout [ 47.336340] ------------[ cut here ]------------ [ 47.341278] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: (null) [ 47.351621] WARNING: CPU: 0 PID: 6484 at lib/debugobjects.c:325 debug_print_object+0x160/0x250 [ 47.360391] Kernel panic - not syncing: panic_on_warn set ... [ 47.360391] [ 47.367851] CPU: 0 PID: 6484 Comm: syz-executor240 Not tainted 4.19.136-syzkaller #0 [ 47.375724] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.385068] Call Trace: [ 47.387654] dump_stack+0x1fc/0x2fe [ 47.391273] panic+0x26a/0x50e [ 47.394465] ? __warn_printk+0xf3/0xf3 [ 47.398343] ? debug_print_object+0x160/0x250 [ 47.402825] ? __probe_kernel_read+0x16c/0x1b0 [ 47.407463] ? __warn.cold+0x5/0x61 [ 47.411078] ? __warn+0xe4/0x200 [ 47.414449] ? debug_print_object+0x160/0x250 [ 47.418934] __warn.cold+0x20/0x61 [ 47.422466] ? debug_print_object+0x160/0x250 [ 47.426956] report_bug+0x262/0x2b0 [ 47.430596] do_error_trap+0x1d7/0x310 [ 47.434497] ? math_error+0x310/0x310 [ 47.438288] ? irq_work_claim+0xa6/0xc0 [ 47.442258] ? irq_work_queue+0x29/0x80 [ 47.446226] ? wake_up_klogd.part.0+0x8c/0xc0 [ 47.450717] ? trace_hardirqs_off_caller+0x69/0x210 [ 47.455735] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 47.460581] invalid_op+0x14/0x20 [ 47.464044] RIP: 0010:debug_print_object+0x160/0x250 [ 47.469159] 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 a3 0c 4e 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 47.489008] RSP: 0018:ffff888089b674d8 EFLAGS: 00010086 [ 47.494370] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 47.501635] RDX: 0000000000000000 RSI: ffffffff8154cf01 RDI: ffffed101136ce8d [ 47.508906] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 [ 47.516167] R10: 0000000000000005 R11: ffffffff8ad3601b R12: ffffffff88da08e0 [ 47.523427] R13: ffffffff815a2ad0 R14: ffff8880a676ce68 R15: 1ffff1101136cea6 [ 47.530742] ? calc_wheel_index+0x230/0x230 [ 47.535105] ? vprintk_func+0x81/0x17e [ 47.539007] ? debug_print_object+0x160/0x250 [ 47.543525] debug_object_assert_init+0x1f0/0x2e0 [ 47.548384] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 47.553497] ? debug_object_free+0x380/0x380 [ 47.557923] ? __queue_work+0x5f1/0x1100 [ 47.561998] del_timer+0x6d/0x100 [ 47.565446] ? run_timer_softirq+0x670/0x670 [ 47.569923] ? do_raw_spin_unlock+0x171/0x230 [ 47.574417] ? _raw_spin_unlock+0x29/0x40 [ 47.578555] ? trace_hardirqs_off+0x64/0x200 [ 47.582969] try_to_grab_pending+0x2b6/0x6f0 [ 47.587385] cancel_delayed_work+0x76/0x2c0 [ 47.591708] ? cancel_delayed_work_sync+0x20/0x20 [ 47.596543] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 47.601114] ? queue_delayed_work_on+0x122/0x200 [ 47.605866] l2cap_chan_del+0x53a/0x8e0 [ 47.609847] l2cap_chan_close+0x108/0x820 [ 47.613999] ? __set_monitor_timer+0x130/0x130 [ 47.618569] ? wait_for_completion_io+0x10/0x10 [ 47.623232] ? mark_held_locks+0xa6/0xf0 [ 47.627290] ? __local_bh_enable_ip+0x159/0x270 [ 47.631951] l2cap_sock_shutdown+0x85e/0xbd0 [ 47.636352] ? switch_task_namespaces+0xaa/0xc0 [ 47.641017] ? do_exit+0xbad/0x2b70 [ 47.644636] ? l2cap_skb_msg_name+0x120/0x120 [ 47.649133] ? exit_to_usermode_loop+0x204/0x2a0 [ 47.653876] ? do_syscall_64+0x538/0x620 [ 47.658887] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.664250] ? mark_held_locks+0xf0/0xf0 [ 47.668298] ? l2cap_sock_release+0x56/0x190 [ 47.672727] ? lock_downgrade+0x720/0x720 [ 47.676881] ? do_raw_write_lock+0xb8/0x1e0 [ 47.681199] l2cap_sock_release+0x63/0x190 [ 47.685443] __sock_release+0xcd/0x2a0 [ 47.689326] ? __sock_release+0x2a0/0x2a0 [ 47.693464] sock_close+0x15/0x20 [ 47.696931] __fput+0x2ce/0x890 [ 47.700218] task_work_run+0x148/0x1c0 [ 47.704111] do_exit+0xbb2/0x2b70 [ 47.707557] ? mark_held_locks+0xf0/0xf0 [ 47.711609] ? mm_update_next_owner+0x650/0x650 [ 47.716281] ? get_signal+0x388/0x1f70 [ 47.720161] ? lock_downgrade+0x720/0x720 [ 47.724295] ? lock_acquire+0x170/0x3c0 [ 47.728275] do_group_exit+0x125/0x310 [ 47.732166] get_signal+0x3f2/0x1f70 [ 47.735886] ? __local_bh_enable_ip+0x159/0x270 [ 47.740548] do_signal+0x8f/0x1670 [ 47.744119] ? l2cap_sock_accept+0x4d0/0x4d0 [ 47.748515] ? __local_bh_enable_ip+0x159/0x270 [ 47.753185] ? selinux_netlbl_socket_connect+0x2e/0x40 [ 47.758453] ? setup_sigcontext+0x820/0x820 [ 47.762767] ? l2cap_sock_accept+0x4d0/0x4d0 [ 47.767169] ? __ia32_sys_accept+0xb0/0xb0 [ 47.771408] ? up_read+0x17/0x110 [ 47.774859] ? __do_page_fault+0x1ca/0xde0 [ 47.779102] ? exit_to_usermode_loop+0x36/0x2a0 [ 47.783768] exit_to_usermode_loop+0x204/0x2a0 [ 47.788354] do_syscall_64+0x538/0x620 [ 47.792234] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.797427] RIP: 0033:0x446d69 [ 47.800625] Code: Bad RIP value. [ 47.803969] RSP: 002b:00007ffd781ec238 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 47.811678] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d69 [ 47.818981] RDX: 000000000000000e RSI: 0000000020000040 RDI: 0000000000000004 [ 47.826240] RBP: 00007ffd781ec270 R08: 0000000000000000 R09: 00000000000000ff [ 47.833501] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 [ 47.840760] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 47.849267] Kernel Offset: disabled [ 47.852947] Rebooting in 86400 seconds..