[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.41' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 31.978522] kasan: CONFIG_KASAN_INLINE enabled [ 31.983384] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.991975] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 31.998220] Modules linked in: [ 32.001393] CPU: 1 PID: 7973 Comm: syz-executor007 Not tainted 4.14.221-syzkaller #0 [ 32.009337] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.018687] task: ffff8880a8e7e300 task.stack: ffff8880b2c20000 [ 32.024738] RIP: 0010:ieee802154_llsec_parse_key_id+0x15f/0x820 [ 32.030782] RSP: 0018:ffff8880b2c27688 EFLAGS: 00010247 [ 32.036397] RAX: dffffc0000000000 RBX: ffff8880b2c27720 RCX: 0000000000000000 [ 32.043644] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 32.050894] RBP: ffff8880b2c27850 R08: 0000000000000001 R09: ffff8880b2c27720 [ 32.058193] R10: ffff8880b2c27737 R11: ffff8880a8e7e300 R12: 1ffff11016584ed1 [ 32.065447] R13: 0000000000000000 R14: ffff88823a0e3040 R15: ffffffff89ec2778 [ 32.072874] FS: 000000000065d300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 32.081111] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 32.086971] CR2: 000000002000030c CR3: 0000000095435000 CR4: 00000000001406e0 [ 32.094340] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 32.101609] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 32.109037] Call Trace: [ 32.111614] ? ieee802154_nl_start_confirm.isra.0+0x1f0/0x1f0 [ 32.117502] ? lock_downgrade+0x740/0x740 [ 32.121668] ieee802154_llsec_del_key+0xf5/0x210 [ 32.126413] ? ieee802154_llsec_add_key+0x5c0/0x5c0 [ 32.131416] ? nla_parse+0x157/0x1f0 [ 32.135110] genl_family_rcv_msg+0x572/0xb20 [ 32.139514] ? genl_rcv+0x40/0x40 [ 32.142948] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 32.148380] ? trace_hardirqs_on+0x10/0x10 [ 32.152605] ? sock_sendmsg+0xb5/0x100 [ 32.156471] genl_rcv_msg+0xaf/0x140 [ 32.160177] netlink_rcv_skb+0x125/0x390 [ 32.164228] ? genl_family_rcv_msg+0xb20/0xb20 [ 32.168797] ? netlink_ack+0x9a0/0x9a0 [ 32.172663] ? lock_acquire+0x170/0x3f0 [ 32.176636] genl_rcv+0x24/0x40 [ 32.179916] netlink_unicast+0x437/0x610 [ 32.184130] ? netlink_sendskb+0xd0/0xd0 [ 32.188179] ? __check_object_size+0x179/0x230 [ 32.192764] netlink_sendmsg+0x62e/0xb80 [ 32.196844] ? nlmsg_notify+0x170/0x170 [ 32.200812] ? kernel_recvmsg+0x210/0x210 [ 32.204950] ? security_socket_sendmsg+0x83/0xb0 [ 32.209702] ? nlmsg_notify+0x170/0x170 [ 32.213825] sock_sendmsg+0xb5/0x100 [ 32.217673] ___sys_sendmsg+0x6c8/0x800 [ 32.221735] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 32.226496] ? trace_hardirqs_on+0x10/0x10 [ 32.230862] ? trace_hardirqs_on+0x10/0x10 [ 32.235122] ? apparmor_file_alloc_security+0x129/0x800 [ 32.240497] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 32.245941] ? __lockdep_init_map+0x100/0x560 [ 32.250430] ? __fd_install+0x1ec/0x5c0 [ 32.254393] ? lock_acquire+0x170/0x3f0 [ 32.258481] ? lock_downgrade+0x740/0x740 [ 32.262621] ? __fdget+0x167/0x1f0 [ 32.266149] ? sockfd_lookup_light+0xb2/0x160 [ 32.270659] __sys_sendmsg+0xa3/0x120 [ 32.274455] ? SyS_shutdown+0x160/0x160 [ 32.278419] ? move_addr_to_kernel+0x60/0x60 [ 32.282834] ? __do_page_fault+0x159/0xad0 [ 32.287085] SyS_sendmsg+0x27/0x40 [ 32.290615] ? __sys_sendmsg+0x120/0x120 [ 32.294656] do_syscall_64+0x1d5/0x640 [ 32.298535] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 32.303705] RIP: 0033:0x43fa99 [ 32.306878] RSP: 002b:00007ffdc4666a48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 32.314653] RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043fa99 [ 32.322069] RDX: 0000000000004054 RSI: 0000000020000440 RDI: 0000000000000004 [ 32.329332] RBP: 0000000000403500 R08: 00000000ffffffff R09: 00000000004004a0 [ 32.336609] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000403590 [ 32.343860] R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0 [ 32.351120] Code: 97 05 00 00 4d 8b 6e 30 4d 85 ed 0f 84 ce 04 00 00 e8 56 87 7c fa 49 8d 7d 04 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 [ 32.370217] RIP: ieee802154_llsec_parse_key_id+0x15f/0x820 RSP: ffff8880b2c27688 [ 32.379078] ---[ end trace 056aff63b963778c ]--- [ 32.383882] Kernel panic - not syncing: Fatal exception [ 32.390069] Kernel Offset: disabled [ 32.393687] Rebooting in 86400 seconds..