[ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.54' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 28.509390] kasan: CONFIG_KASAN_INLINE enabled [ 28.514349] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.521731] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.527937] Modules linked in: [ 28.531107] CPU: 0 PID: 7985 Comm: syz-executor399 Not tainted 4.14.218-syzkaller #0 [ 28.538959] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.548289] task: ffff8880b3a9c580 task.stack: ffff8880b4840000 [ 28.554356] RIP: 0010:nl802154_del_llsec_devkey+0x149/0x330 [ 28.560036] RSP: 0018:ffff8880b48476a0 EFLAGS: 00010246 [ 28.565370] RAX: dffffc0000000000 RBX: ffff88823a06bd00 RCX: 0000000000000000 [ 28.572613] RDX: 0000000000000000 RSI: ffff8880b4847850 RDI: ffff88823a06be20 [ 28.579907] RBP: 1ffff11016908ed6 R08: 0000000000000001 R09: ffff8880b4847990 [ 28.587152] R10: ffff8880b48476af R11: ffff8880b3a9c580 R12: ffff88823829e280 [ 28.594428] R13: ffff8880abad4fd0 R14: ffffffff886f1d90 R15: ffff8880a220c780 [ 28.601708] FS: 0000000000f37300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 28.609912] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.615777] CR2: 0000000020000408 CR3: 000000009f410000 CR4: 00000000001406f0 [ 28.623025] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.630283] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.637527] Call Trace: [ 28.640103] ? lock_acquire+0x170/0x3f0 [ 28.644065] ? nl802154_add_llsec_devkey+0x380/0x380 [ 28.649147] ? nl802154_pre_doit+0xb2/0xb20 [ 28.653492] ? validate_nla+0x192/0x5e0 [ 28.657559] ? nl802154_dump_wpan_phy_done+0x40/0x40 [ 28.662640] ? nla_parse+0x157/0x1f0 [ 28.666330] ? nl802154_dump_wpan_phy_done+0x40/0x40 [ 28.671405] genl_family_rcv_msg+0x572/0xb20 [ 28.675790] ? genl_rcv+0x40/0x40 [ 28.679217] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 28.684658] ? trace_hardirqs_on+0x10/0x10 [ 28.688867] ? sock_sendmsg+0xb5/0x100 [ 28.692728] genl_rcv_msg+0xaf/0x140 [ 28.696418] netlink_rcv_skb+0x125/0x390 [ 28.700465] ? genl_family_rcv_msg+0xb20/0xb20 [ 28.705020] ? netlink_ack+0x9a0/0x9a0 [ 28.708986] ? lock_acquire+0x170/0x3f0 [ 28.712936] genl_rcv+0x24/0x40 [ 28.716199] netlink_unicast+0x437/0x610 [ 28.720257] ? netlink_sendskb+0xd0/0xd0 [ 28.724292] ? __check_object_size+0x179/0x230 [ 28.728845] netlink_sendmsg+0x62e/0xb80 [ 28.732881] ? nlmsg_notify+0x170/0x170 [ 28.736825] ? kernel_recvmsg+0x210/0x210 [ 28.740943] ? security_socket_sendmsg+0x83/0xb0 [ 28.745686] ? nlmsg_notify+0x170/0x170 [ 28.749633] sock_sendmsg+0xb5/0x100 [ 28.753322] ___sys_sendmsg+0x6c8/0x800 [ 28.757270] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 28.761998] ? trace_hardirqs_on+0x10/0x10 [ 28.766203] ? trace_hardirqs_on+0x10/0x10 [ 28.770413] ? apparmor_file_alloc_security+0x129/0x800 [ 28.775767] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.781297] ? __lockdep_init_map+0x100/0x560 [ 28.785773] ? __fd_install+0x1ec/0x5c0 [ 28.789720] ? lock_acquire+0x170/0x3f0 [ 28.793665] ? lock_downgrade+0x740/0x740 [ 28.797796] ? __fdget+0x167/0x1f0 [ 28.801306] ? sockfd_lookup_light+0xb2/0x160 [ 28.805774] __sys_sendmsg+0xa3/0x120 [ 28.809544] ? SyS_shutdown+0x160/0x160 [ 28.813492] ? move_addr_to_kernel+0x60/0x60 [ 28.817873] ? __do_page_fault+0x159/0xad0 [ 28.822080] SyS_sendmsg+0x27/0x40 [ 28.825592] ? __sys_sendmsg+0x120/0x120 [ 28.829623] do_syscall_64+0x1d5/0x640 [ 28.833488] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.838650] RIP: 0033:0x43f8a9 [ 28.841811] RSP: 002b:00007fff61914b88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 28.849490] RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043f8a9 [ 28.856732] RDX: 0000000024000044 RSI: 00000000200007c0 RDI: 0000000000000004 [ 28.863974] RBP: 0000000000403310 R08: 00000000004004a0 R09: 00000000004004a0 [ 28.871244] R10: 0000000000000006 R11: 0000000000000246 R12: 00000000004033a0 [ 28.878585] R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0 [ 28.885832] Code: 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ca 01 00 00 48 8b 93 20 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 [ 28.904919] RIP: nl802154_del_llsec_devkey+0x149/0x330 RSP: ffff8880b48476a0 [ 28.912225] ---[ end trace 2db7d383edf78fa3 ]--- [ 28.918844] Kernel panic - not syncing: Fatal exception [ 28.924950] Kernel Offset: disabled [ 28.928558] Rebooting in 86400 seconds..