[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.152' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 26.768451] INFO: trying to register non-static key. [ 26.773574] the code is fine but needs lockdep annotation. [ 26.779177] turning off the locking correctness validator. [ 26.784775] CPU: 1 PID: 7974 Comm: syz-executor226 Not tainted 4.14.269-syzkaller #0 [ 26.792626] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.801954] Call Trace: [ 26.804519] dump_stack+0x1b2/0x281 [ 26.808135] register_lock_class+0x389/0x1180 [ 26.812606] ? __read_once_size_nocheck.constprop.0+0x10/0x10 [ 26.818476] ? trace_hardirqs_on+0x10/0x10 [ 26.822689] ? static_obj+0x50/0x50 [ 26.826289] ? __read_once_size_nocheck.constprop.0+0x10/0x10 [ 26.832147] __lock_acquire+0x167/0x3f20 [ 26.836185] ? __save_stack_trace+0x63/0x160 [ 26.840564] ? deref_stack_reg+0x124/0x1a0 [ 26.844775] ? is_bpf_text_address+0x91/0x150 [ 26.849247] ? __lock_acquire+0x5fc/0x3f20 [ 26.853458] ? trace_hardirqs_on+0x10/0x10 [ 26.857693] ? __lock_acquire+0x5fc/0x3f20 [ 26.861903] ? trace_hardirqs_on+0x10/0x10 [ 26.866123] ? __lock_acquire+0x5fc/0x3f20 [ 26.870368] lock_acquire+0x170/0x3f0 [ 26.874150] ? ieee802154_del_devkey+0x44/0x80 [ 26.878706] ? ieee802154_del_devkey+0x44/0x80 [ 26.883260] __mutex_lock+0xc4/0x1310 [ 26.887047] ? ieee802154_del_devkey+0x44/0x80 [ 26.891616] ? nl802154_pre_doit+0x528/0xb20 [ 26.895997] ? ieee802154_del_devkey+0x44/0x80 [ 26.900555] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 26.905993] ? nla_parse+0x157/0x1f0 [ 26.909681] ? ieee802154_llsec_parse_key_id+0x1bd/0x3a0 [ 26.915188] ? ieee802154_llsec_parse_dev_addr+0x310/0x310 [ 26.920785] ieee802154_del_devkey+0x44/0x80 [ 26.925169] nl802154_del_llsec_devkey+0x254/0x330 [ 26.930073] ? lock_acquire+0x170/0x3f0 [ 26.934022] ? nl802154_add_llsec_devkey+0x3d0/0x3d0 [ 26.939100] ? nl802154_pre_doit+0xb2/0xb20 [ 26.943422] ? validate_nla+0x192/0x5e0 [ 26.947375] ? nla_parse+0x157/0x1f0 [ 26.951081] ? nl802154_dump_wpan_phy_done+0x40/0x40 [ 26.956160] genl_family_rcv_msg+0x572/0xb20 [ 26.960643] ? genl_rcv+0x40/0x40 [ 26.964074] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 26.969500] ? trace_hardirqs_on+0x10/0x10 [ 26.973721] ? sock_sendmsg+0xb5/0x100 [ 26.977599] genl_rcv_msg+0xaf/0x140 [ 26.981283] netlink_rcv_skb+0x125/0x390 [ 26.985502] ? genl_family_rcv_msg+0xb20/0xb20 [ 26.990066] ? netlink_ack+0x9a0/0x9a0 [ 26.993929] ? lock_acquire+0x170/0x3f0 [ 26.997879] genl_rcv+0x24/0x40 [ 27.001134] netlink_unicast+0x437/0x610 [ 27.005254] ? netlink_sendskb+0xd0/0xd0 [ 27.009288] ? __check_object_size+0x179/0x230 [ 27.013843] netlink_sendmsg+0x648/0xbc0 [ 27.017890] ? nlmsg_notify+0x1b0/0x1b0 [ 27.021836] ? kernel_recvmsg+0x210/0x210 [ 27.025962] ? security_socket_sendmsg+0x83/0xb0 [ 27.030689] ? nlmsg_notify+0x1b0/0x1b0 [ 27.034658] sock_sendmsg+0xb5/0x100 [ 27.038345] ___sys_sendmsg+0x6c8/0x800 [ 27.042291] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 27.047035] ? __lock_acquire+0x5fc/0x3f20 [ 27.051265] ? __dentry_kill+0x3f7/0x550 [ 27.055313] ? trace_hardirqs_on+0x10/0x10 [ 27.059694] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.065126] ? dentry_free+0xc6/0x120 [ 27.068899] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 27.073900] ? kmem_cache_free+0x23a/0x2b0 [ 27.078281] ? mntput_no_expire+0xc7/0x910 [ 27.082494] ? lock_acquire+0x170/0x3f0 [ 27.086437] ? __fdget+0x167/0x1f0 [ 27.089967] ? sockfd_lookup_light+0xb2/0x160 [ 27.094438] __sys_sendmsg+0xa3/0x120 [ 27.098214] ? SyS_shutdown+0x160/0x160 [ 27.102175] SyS_sendmsg+0x27/0x40 [ 27.105687] ? __sys_sendmsg+0x120/0x120 [ 27.109718] do_syscall_64+0x1d5/0x640 [ 27.113579] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.118741] R