[ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ 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 '10.128.0.85' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 42.626972][ T8422] netlink: 4 bytes leftover after parsing attributes in process `syz-executor092'. [ 42.636450][ T8422] netlink: 4 bytes leftover after parsing attributes in process `syz-executor092'. [ 42.645744][ T8422] nbd: socks must be embedded in a SOCK_ITEM attr [ 42.655892][ T8422] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 42.667644][ T8422] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 42.676334][ T8422] CPU: 0 PID: 8422 Comm: syz-executor092 Tainted: G W 5.13.0-syzkaller #0 [ 42.686150][ T8422] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.696211][ T8422] RIP: 0010:blk_mq_run_hw_queues+0x14f/0x430 [ 42.702292][ T8422] Code: 80 3c 08 00 74 08 48 89 ef e8 0d 0f dd fd 44 89 fb 48 c1 e3 02 48 03 5d 00 48 89 d8 48 c1 e8 03 48 bd 00 00 00 00 00 fc ff df <8a> 04 28 84 c0 0f 85 b7 02 00 00 8b 03 49 8d 1c c4 48 89 d8 48 c1 [ 42.721987][ T8422] RSP: 0018:ffffc9000183f160 EFLAGS: 00010246 [ 42.728044][ T8422] RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000 [ 42.736112][ T8422] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88801f912b38 [ 42.744106][ T8422] RBP: dffffc0000000000 R08: ffffffff83eb6412 R09: ffffed1003f22687 [ 42.752082][ T8422] R10: ffffed1003f22687 R11: 0000000000000000 R12: ffff88814615f4d8 [ 42.760047][ T8422] R13: 0000000000000000 R14: ffff88801f912af0 R15: 0000000000000000 [ 42.768009][ T8422] FS: 0000000001ab6300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 42.777022][ T8422] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.783665][ T8422] CR2: 00007fa915ace020 CR3: 0000000018231000 CR4: 00000000001506f0 [ 42.791633][ T8422] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.799770][ T8422] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.807733][ T8422] Call Trace: [ 42.811016][ T8422] blk_cleanup_queue+0x9c/0x220 [ 42.815859][ T8422] blk_cleanup_disk+0x3b/0x80 [ 42.820527][ T8422] nbd_put+0x9d/0x170 [ 42.824521][ T8422] nbd_genl_connect+0x17e7/0x1aa0 [ 42.829536][ T8422] ? trace_raw_output_nbd_send_request+0xe0/0xe0 [ 42.835863][ T8422] ? print_irqtrace_events+0x220/0x220 [ 42.841320][ T8422] ? __nla_parse+0x3c/0x50 [ 42.845729][ T8422] ? genl_family_rcv_msg_attrs_parse+0x1cd/0x290 [ 42.852071][ T8422] genl_rcv_msg+0xfb4/0x13c0 [ 42.856672][ T8422] ? genl_bind+0x360/0x360 [ 42.861081][ T8422] ? unwind_get_return_address+0x48/0x80 [ 42.866821][ T8422] ? arch_stack_walk+0x98/0xe0 [ 42.871581][ T8422] ? trace_lock_acquire+0x59/0x180 [ 42.876689][ T8422] ? rcu_lock_acquire+0x5/0x30 [ 42.881473][ T8422] ? trace_raw_output_nbd_send_request+0xe0/0xe0 [ 42.887800][ T8422] ? trace_lock_acquire+0x59/0x180 [ 42.892913][ T8422] netlink_rcv_skb+0x1f0/0x460 [ 42.897684][ T8422] ? genl_bind+0x360/0x360 [ 42.902111][ T8422] ? netlink_ack+0xb70/0xb70 [ 42.906712][ T8422] ? __down_read_common+0x1b0/0x450 [ 42.911918][ T8422] ? up_read_non_owner+0x1c0/0x1c0 [ 42.917126][ T8422] ? netlink_deliver_tap+0x130/0x840 [ 42.922414][ T8422] genl_rcv+0x24/0x40 [ 42.926396][ T8422] netlink_unicast+0x7de/0x9b0 [ 42.931246][ T8422] ? netlink_detachskb+0xa0/0xa0 [ 42.936200][ T8422] ? __virt_addr_valid+0x21b/0x2d0 [ 42.942796][ T8422] ? __phys_addr_symbol+0x2b/0x70 [ 42.947849][ T8422] ? __check_object_size+0x2f3/0x3f0 [ 42.953162][ T8422] ? bpf_lsm_netlink_send+0x5/0x10 [ 42.958301][ T8422] netlink_sendmsg+0xaa6/0xe90 [ 42.963097][ T8422] ? netlink_getsockopt+0xa60/0xa60 [ 42.968324][ T8422] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 42.973641][ T8422] ? security_socket_sendmsg+0x9d/0xb0 [ 42.979128][ T8422] ? netlink_getsockopt+0xa60/0xa60 [ 42.984386][ T8422] ____sys_sendmsg+0x5a2/0x900 [ 42.989155][ T8422] ? iovec_from_user+0x359/0x390 [ 42.994108][ T8422] ? __sys_sendmsg_sock+0x30/0x30 [ 42.999140][ T8422] __sys_sendmsg+0x319/0x400 [ 43.003833][ T8422] ? ____sys_sendmsg+0x900/0x900 [ 43.008783][ T8422] ? security_socket_recvmsg+0xb1/0xd0 [ 43.014240][ T8422] ? trace_lock_acquire+0x59/0x180 [ 43.019351][ T8422] ? __context_tracking_exit+0x7a/0xd0 [ 43.024808][ T8422] ? trace_lock_release+0x4f/0x140 [ 43.029920][ T8422] ? lock_release+0x81/0x7b0 [ 43.034507][ T8422] ? trace_lock_release+0x4f/0x140 [ 43.039659][ T8422] ? read_lock_is_recursive+0x10/0x10 [ 43.045027][ T8422] ? read_lock_is_recursive+0x10/0x10 [ 43.050397][ T8422] ? __lock_acquire+0x6100/0x6100 [ 43.055432][ T8422] ? __lock_acquire+0x6100/0x6100 [ 43.060485][ T8422] ? account_other_time+0x63/0x280 [ 43.065609][ T8422] ? syscall_enter_from_user_mode+0x2e/0x1b0 [ 43.071593][ T8422] ? syscall_enter_from_user_mode+0x2e/0x1b0 [ 43.077572][ T8422] do_syscall_64+0x3d/0xb0 [ 43.081986][ T8422] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 43.087872][ T8422] RIP: 0033:0x43fa29 [ 43.091775][ T8422] Code: 28 c3 e8 5a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 43.112102][ T8422] RSP: 002b:00007ffcd5946088 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 43.120510][ T8422] RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043fa29 [ 43.128473][ T8422] RDX: 0000000000000000 RSI: 0000000020000b40 RDI: 0000000000000003 [ 43.136435][ T8422] RBP: 0000000000403490 R08: 0000000000000000 R09: 00000000004004a0 [ 43.144399][ T8422] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403520 [ 43.152373][ T8422] R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0 [ 43.160341][ T8422] Modules linked in: [ 43.165133][ T8422] ---[ end trace d9ad06d2dab45e1b ]--- [ 43.170899][ T8422] RIP: 0010:blk_mq_run_hw_queues+0x14f/0x430 [ 43.177266][ T8422] Code: 80 3c 08 00 74 08 48 89 ef e8 0d 0f dd fd 44 89 fb 48 c1 e3 02 48 03 5d 00 48 89 d8 48 c1 e8 03 48 bd 00 00 00 00 00 fc ff df <8a> 04 28 84 c0 0f 85 b7 02 00 00 8b 03 49 8d 1c c4 48 89 d8 48 c1 [ 43.197046][ T8422] RSP: 0018:ffffc9000183f160 EFLAGS: 00010246 [ 43.203123][ T8422] RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000 [ 43.211135][ T8422] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88801f912b38 [ 43.219169][ T8422] RBP: dffffc0000000000 R08: ffffffff83eb6412 R09: ffffed1003f22687 [ 43.227270][ T8422] R10: ffffed1003f22687 R11: 0000000000000000 R12: ffff88814615f4d8 [ 43.235253][ T8422] R13: 0000000000000000 R14: ffff88801f912af0 R15: 0000000000000000 [ 43.243370][ T8422] FS: 0000000001ab6300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 43.252373][ T8422] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.259018][ T8422] CR2: 00007fa915ace020 CR3: 0000000018231000 CR4: 00000000001506f0 [ 43.267059][ T8422] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.275035][ T8422] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.283207][ T8422] Kernel panic - not syncing: Fatal exception [ 43.290272][ T8422] Kernel Offset: disabled [ 43.294628][ T8422] Rebooting in 86400 seconds..