Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.206' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.152058] kasan: CONFIG_KASAN_INLINE enabled [ 29.157196] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.166032] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 29.172416] Modules linked in: [ 29.175643] CPU: 1 PID: 7949 Comm: syz-executor784 Not tainted 4.14.221-syzkaller #0 [ 29.183540] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.192869] task: ffff8880973ec400 task.stack: ffff88809a648000 [ 29.198906] RIP: 0010:nl802154_del_llsec_key+0x15a/0x2f0 [ 29.204326] RSP: 0018:ffff88809a64f698 EFLAGS: 00010246 [ 29.209684] RAX: dffffc0000000000 RBX: ffff8880b2905500 RCX: 0000000000000000 [ 29.216951] RDX: 0000000000000000 RSI: ffff88809a64f850 RDI: ffff8880b2905628 [ 29.224194] RBP: 1ffff110134c9ed5 R08: 0000000000000001 R09: ffff88809a64f990 [ 29.231439] R10: ffff88809a64f6af R11: ffff8880973ec400 R12: ffff88823827a2c0 [ 29.238684] R13: ffff8880abb45050 R14: ffffffff886f2070 R15: ffff8880a3402500 [ 29.245931] FS: 0000000001916300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 29.254145] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.260000] CR2: 0000000020000148 CR3: 000000009a60c000 CR4: 00000000001406e0 [ 29.267245] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.274506] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.281749] Call Trace: [ 29.284315] ? nl802154_post_doit+0x150/0x150 [ 29.288785] ? lock_acquire+0x170/0x3f0 [ 29.292732] ? nl802154_set_llsec_params+0x420/0x420 [ 29.297831] ? nl802154_pre_doit+0xb2/0xb20 [ 29.302125] ? validate_nla+0x192/0x5e0 [ 29.306073] ? nl802154_dump_wpan_phy_done+0x40/0x40 [ 29.311147] ? nla_parse+0x157/0x1f0 [ 29.314834] ? nl802154_dump_wpan_phy_done+0x40/0x40 [ 29.319912] genl_family_rcv_msg+0x572/0xb20 [ 29.324313] ? genl_rcv+0x40/0x40 [ 29.327754] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 29.333175] ? trace_hardirqs_on+0x10/0x10 [ 29.337730] ? sock_sendmsg+0xb5/0x100 [ 29.341590] genl_rcv_msg+0xaf/0x140 [ 29.345276] netlink_rcv_skb+0x125/0x390 [ 29.349309] ? genl_family_rcv_msg+0xb20/0xb20 [ 29.353863] ? netlink_ack+0x9a0/0x9a0 [ 29.357721] ? lock_acquire+0x170/0x3f0 [ 29.361670] genl_rcv+0x24/0x40 [ 29.364921] netlink_unicast+0x437/0x610 [ 29.368953] ? netlink_sendskb+0xd0/0xd0 [ 29.373001] ? __check_object_size+0x179/0x230 [ 29.377557] netlink_sendmsg+0x62e/0xb80 [ 29.381591] ? nlmsg_notify+0x170/0x170 [ 29.385538] ? kernel_recvmsg+0x210/0x210 [ 29.389658] ? security_socket_sendmsg+0x83/0xb0 [ 29.394387] ? nlmsg_notify+0x170/0x170 [ 29.398333] sock_sendmsg+0xb5/0x100 [ 29.402020] ___sys_sendmsg+0x6c8/0x800 [ 29.405967] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 29.410694] ? __lock_acquire+0x5fc/0x3f20 [ 29.414903] ? __dentry_kill+0x3f7/0x550 [ 29.418937] ? trace_hardirqs_on+0x10/0x10 [ 29.423146] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.428570] ? dentry_free+0xc6/0x120 [ 29.432344] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.437335] ? kmem_cache_free+0x23a/0x2b0 [ 29.441587] ? mntput_no_expire+0xc7/0x910 [ 29.445796] ? lock_acquire+0x170/0x3f0 [ 29.449743] ? __fdget+0x167/0x1f0 [ 29.453270] ? sockfd_lookup_light+0xb2/0x160 [ 29.457761] __sys_sendmsg+0xa3/0x120 [ 29.461534] ? SyS_shutdown+0x160/0x160 [ 29.465484] SyS_sendmsg+0x27/0x40 [ 29.468998] ? __sys_sendmsg+0x120/0x120 [ 29.473029] do_syscall_64+0x1d5/0x640 [ 29.476894] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.482057] RIP: 0033:0x43fa69 [ 29.485219] RSP: 002b:00007ffe507aa6f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 29.492898] RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043fa69 [ 29.500141] RDX: 0000000000000810 RSI: 00000000200005c0 RDI: 0000000000000003 [ 29.507383] RBP: 00000000004034d0 R08: 0000000000000008 R09: 00000000004004a0 [ 29.514631] R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000403560 [ 29.521873] R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0 [ 29.529118] Code: 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 85 01 00 00 48 8b 93 28 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 d1 48 c1 e9 03 <0f> b6 0c 01 48 89 d0 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85 [ 29.548358] RIP: nl802154_del_llsec_key+0x15a/0x2f0 RSP: ffff88809a64f698 [ 29.564026] ---[ end trace eabd91d2c6afc64d ]--- [ 29.564031] Kernel panic - not syncing: Fatal exception [ 29.564729] Kernel Offset: disabled [ 29.578441] Rebooting in 86400 seconds..