Warning: Permanently added '10.128.0.176' (ECDSA) to the list of known hosts. syzkaller login: [ 41.873121] audit: type=1400 audit(1596660720.293:8): avc: denied { execmem } for pid=6469 comm="syz-executor440" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 41.887716] IPVS: ftp: loaded support on port[0] = 21 executing program [ 45.025888] Bluetooth: hci0: command 0x0409 tx timeout [ 47.104724] Bluetooth: hci0: command 0x041b tx timeout [ 48.007354] ------------[ cut here ]------------ [ 48.012306] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: (null) [ 48.022628] WARNING: CPU: 0 PID: 6500 at lib/debugobjects.c:325 debug_print_object+0x160/0x250 [ 48.031363] Kernel panic - not syncing: panic_on_warn set ... [ 48.031363] [ 48.038742] CPU: 0 PID: 6500 Comm: syz-executor440 Not tainted 4.19.137-syzkaller #0 [ 48.046613] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.055947] Call Trace: [ 48.058527] dump_stack+0x1fc/0x2fe [ 48.062139] panic+0x26a/0x50e [ 48.065313] ? __warn_printk+0xf3/0xf3 [ 48.069194] ? debug_print_object+0x160/0x250 [ 48.073694] ? __probe_kernel_read+0x16c/0x1b0 [ 48.078271] ? __warn.cold+0x5/0x61 [ 48.081880] ? __warn+0xe4/0x200 [ 48.085227] ? debug_print_object+0x160/0x250 [ 48.089702] __warn.cold+0x20/0x61 [ 48.093238] ? debug_print_object+0x160/0x250 [ 48.097718] report_bug+0x262/0x2b0 [ 48.101341] do_error_trap+0x1d7/0x310 [ 48.105235] ? math_error+0x310/0x310 [ 48.109019] ? irq_work_claim+0xa6/0xc0 [ 48.112976] ? irq_work_queue+0x29/0x80 [ 48.116939] ? wake_up_klogd.part.0+0x8c/0xc0 [ 48.121427] ? trace_hardirqs_off_caller+0x69/0x210 [ 48.126440] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.131266] invalid_op+0x14/0x20 [ 48.134712] RIP: 0010:debug_print_object+0x160/0x250 [ 48.139803] Code: dd 40 14 cb 87 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd 40 14 cb 87 48 c7 c7 c0 09 cb 87 e8 1b 09 dd fd <0f> 0b 83 05 23 09 4e 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 48.158682] RSP: 0018:ffff8880905374d8 EFLAGS: 00010086 [ 48.164033] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 48.171282] RDX: 0000000000000000 RSI: ffffffff8154cf41 RDI: ffffed10120a6e8d [ 48.178528] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 [ 48.185786] R10: 0000000000000005 R11: ffffffff8ad3601b R12: ffffffff88da08e0 [ 48.193032] R13: ffffffff815a2b10 R14: ffff888088d252e8 R15: 1ffff110120a6ea6 [ 48.200290] ? calc_wheel_index+0x230/0x230 [ 48.204609] ? vprintk_func+0x81/0x17e [ 48.208480] ? debug_print_object+0x160/0x250 [ 48.212955] debug_object_assert_init+0x1f0/0x2e0 [ 48.217787] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 48.222877] ? debug_object_free+0x380/0x380 [ 48.227267] ? __queue_work+0x5f1/0x1100 [ 48.231322] del_timer+0x6d/0x100 [ 48.234756] ? run_timer_softirq+0x670/0x670 [ 48.239142] ? do_raw_spin_unlock+0x171/0x230 [ 48.243628] ? _raw_spin_unlock+0x29/0x40 [ 48.247767] ? trace_hardirqs_off+0x64/0x200 [ 48.252155] try_to_grab_pending+0x2b6/0x6f0 [ 48.256543] cancel_delayed_work+0x76/0x2c0 [ 48.260850] ? cancel_delayed_work_sync+0x20/0x20 [ 48.265708] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 48.270267] ? queue_delayed_work_on+0x122/0x200 [ 48.275003] l2cap_chan_del+0x53a/0x8e0 [ 48.278967] l2cap_chan_close+0x108/0x820 [ 48.283098] ? __set_monitor_timer+0x130/0x130 [ 48.287659] ? wait_for_completion_io+0x10/0x10 [ 48.292306] ? mark_held_locks+0xa6/0xf0 [ 48.296347] ? __local_bh_enable_ip+0x159/0x270 [ 48.300996] l2cap_sock_shutdown+0x85e/0xbd0 [ 48.305384] ? switch_task_namespaces+0xaa/0xc0 [ 48.310031] ? do_exit+0xbad/0x2b70 [ 48.313636] ? l2cap_skb_msg_name+0x120/0x120 [ 48.318120] ? exit_to_usermode_loop+0x204/0x2a0 [ 48.322852] ? do_syscall_64+0x538/0x620 [ 48.327153] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.332494] ? mark_held_locks+0xf0/0xf0 [ 48.336544] ? l2cap_sock_release+0x56/0x190 [ 48.340943] ? lock_downgrade+0x720/0x720 [ 48.345077] ? do_raw_write_lock+0xb8/0x1e0 [ 48.349386] l2cap_sock_release+0x63/0x190 [ 48.353611] __sock_release+0xcd/0x2a0 [ 48.357487] ? __sock_release+0x2a0/0x2a0 [ 48.361613] sock_close+0x15/0x20 [ 48.365048] __fput+0x2ce/0x890 [ 48.368321] task_work_run+0x148/0x1c0 [ 48.372189] do_exit+0xbb2/0x2b70 [ 48.375624] ? mark_held_locks+0xf0/0xf0 [ 48.379664] ? mm_update_next_owner+0x650/0x650 [ 48.384335] ? get_signal+0x388/0x1f70 [ 48.388227] ? lock_downgrade+0x720/0x720 [ 48.392353] ? lock_acquire+0x170/0x3c0 [ 48.396307] do_group_exit+0x125/0x310 [ 48.400173] get_signal+0x3f2/0x1f70 [ 48.403869] ? __local_bh_enable_ip+0x159/0x270 [ 48.408520] do_signal+0x8f/0x1670 [ 48.412051] ? l2cap_sock_accept+0x4d0/0x4d0 [ 48.416438] ? __local_bh_enable_ip+0x159/0x270 [ 48.421087] ? selinux_netlbl_socket_connect+0x2e/0x40 [ 48.426342] ? setup_sigcontext+0x820/0x820 [ 48.430643] ? l2cap_sock_accept+0x4d0/0x4d0 [ 48.435057] ? __ia32_sys_accept+0xb0/0xb0 [ 48.439277] ? exit_to_usermode_loop+0x36/0x2a0 [ 48.443931] exit_to_usermode_loop+0x204/0x2a0 [ 48.448495] do_syscall_64+0x538/0x620 [ 48.452366] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.457533] RIP: 0033:0x446d89 [ 48.460724] Code: Bad RIP value. [ 48.464066] RSP: 002b:00007ffc562dc7c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 48.471749] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d89 [ 48.479016] RDX: 0000000000000080 RSI: 00000000200000c0 RDI: 0000000000000004 [ 48.486292] RBP: 00007ffc562dc800 R08: 0000000000000000 R09: 00000000000000ff [ 48.493578] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 [ 48.500827] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 48.509312] Kernel Offset: disabled [ 48.512978] Rebooting in 86400 seconds..