[ 98.713782][ T27] audit: type=1800 audit(1580175072.950:30): pid=9647 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.212' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 107.704281][ T9802] kasan: CONFIG_KASAN_INLINE enabled [ 107.709882][ T9802] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 107.718087][ T9802] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 107.725028][ T9802] CPU: 0 PID: 9802 Comm: syz-executor911 Not tainted 5.5.0-syzkaller #0 [ 107.734736][ T9802] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 107.744805][ T9802] RIP: 0010:strlen+0x1f/0xa0 [ 107.749377][ T9802] Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24 [ 107.769096][ T9802] RSP: 0018:ffffc90002016e90 EFLAGS: 00010286 [ 107.775154][ T9802] RAX: dffffc0000000000 RBX: ffff88809cef2718 RCX: 1ffffffff14f6d4e [ 107.783117][ T9802] RDX: 0000000000000042 RSI: ffffffff8673a421 RDI: 0000000000000214 [ 107.791132][ T9802] RBP: ffffc90002016ea8 R08: ffff88808e3c8280 R09: ffffed10139de4e3 [ 107.799469][ T9802] R10: ffffed10139de4e2 R11: ffff88809cef2717 R12: 0000000000000214 [ 107.807698][ T9802] R13: 0000000000000204 R14: ffff8880a7ba2e00 R15: ffff88809cef2700 [ 107.815691][ T9802] FS: 0000000002520880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 107.824609][ T9802] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 107.831203][ T9802] CR2: 000056178d9b1110 CR3: 00000000a6ec6000 CR4: 00000000001406f0 [ 107.839389][ T9802] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 107.847368][ T9802] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 107.855339][ T9802] Call Trace: [ 107.858806][ T9802] ip_set_comment_free+0x69/0xe0 [ 107.863866][ T9802] hash_net4_add+0x1b9a/0x2200 [ 107.868627][ T9802] ? write_comp_data+0x51/0x70 [ 107.873393][ T9802] hash_net4_uadt+0x596/0x940 [ 107.878073][ T9802] ? hash_net4_head+0x730/0x730 [ 107.882919][ T9802] ? hash_net6_uadt+0x880/0x880 [ 107.887776][ T9802] call_ad+0x1a0/0x5a0 [ 107.891946][ T9802] ? start_msg+0x220/0x220 [ 107.896361][ T9802] ? nla_memcpy+0xb0/0xb0 [ 107.900868][ T9802] ? __nla_parse+0x43/0x60 [ 107.905301][ T9802] ip_set_ad.isra.0+0x572/0xb20 [ 107.911634][ T9802] ? ip_set_nfnl_get_byindex+0x460/0x460 [ 107.917281][ T9802] ? nla_memcpy+0xb0/0xb0 [ 107.921636][ T9802] ? lock_downgrade+0x920/0x920 [ 107.926482][ T9802] ip_set_uadd+0x37/0x50 [ 107.930737][ T9802] ? ip_set_udel+0x50/0x50 [ 107.935162][ T9802] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 107.940125][ T9802] ? nfnetlink_bind+0x2c0/0x2c0 [ 107.944967][ T9802] ? __kasan_check_read+0x11/0x20 [ 107.950022][ T9802] ? __lock_acquire+0x8a0/0x4a00 [ 107.955084][ T9802] ? save_stack+0x5c/0x90 [ 107.959435][ T9802] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 107.965848][ T9802] ? apparmor_capable+0x497/0x900 [ 107.970859][ T9802] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 107.977254][ T9802] ? __kasan_check_read+0x11/0x20 [ 107.982385][ T9802] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 107.987849][ T9802] netlink_rcv_skb+0x177/0x450 [ 107.992618][ T9802] ? nfnetlink_bind+0x2c0/0x2c0 [ 107.997460][ T9802] ? netlink_ack+0xb50/0xb50 [ 108.002079][ T9802] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 108.008318][ T9802] ? ns_capable_common+0x93/0x100 [ 108.013338][ T9802] ? ns_capable+0x20/0x30 [ 108.017780][ T9802] ? __netlink_ns_capable+0x104/0x140 [ 108.023150][ T9802] nfnetlink_rcv+0x1ba/0x460 [ 108.027742][ T9802] ? nfnetlink_rcv_batch+0x17b0/0x17b0 [ 108.033183][ T9802] ? netlink_deliver_tap+0x24a/0xbe0 [ 108.038464][ T9802] ? __kasan_check_write+0x14/0x20 [ 108.043571][ T9802] netlink_unicast+0x58c/0x7d0 [ 108.048392][ T9802] ? netlink_attachskb+0x870/0x870 [ 108.053507][ T9802] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 108.059230][ T9802] ? __check_object_size+0x3d/0x437 [ 108.064586][ T9802] netlink_sendmsg+0x91c/0xea0 [ 108.069489][ T9802] ? netlink_unicast+0x7d0/0x7d0 [ 108.074445][ T9802] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 108.080371][ T9802] ? apparmor_socket_sendmsg+0x2a/0x30 [ 108.085954][ T9802] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 108.092197][ T9802] ? security_socket_sendmsg+0x8d/0xc0 [ 108.097747][ T9802] ? netlink_unicast+0x7d0/0x7d0 [ 108.102802][ T9802] sock_sendmsg+0xd7/0x130 [ 108.107450][ T9802] ____sys_sendmsg+0x753/0x880 [ 108.112220][ T9802] ? kernel_sendmsg+0x50/0x50 [ 108.116882][ T9802] ? lockdep_init_map+0x1be/0x6d0 [ 108.121909][ T9802] ___sys_sendmsg+0x100/0x170 [ 108.126603][ T9802] ? sendmsg_copy_msghdr+0x70/0x70 [ 108.131889][ T9802] ? __kasan_check_read+0x11/0x20 [ 108.136913][ T9802] ? __lock_acquire+0x8a0/0x4a00 [ 108.141867][ T9802] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 108.148110][ T9802] ? __this_cpu_preempt_check+0x35/0x190 [ 108.153735][ T9802] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 108.160099][ T9802] ? percpu_counter_add_batch+0x13c/0x190 [ 108.165829][ T9802] ? __fd_install+0x1bc/0x640 [ 108.170529][ T9802] ? find_held_lock+0x35/0x130 [ 108.175392][ T9802] ? __fd_install+0x1bc/0x640 [ 108.180060][ T9802] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 108.186388][ T9802] ? __fget_light+0x1a9/0x230 [ 108.191045][ T9802] ? __fdget+0x1b/0x20 [ 108.195114][ T9802] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 108.201358][ T9802] __sys_sendmsg+0x105/0x1d0 [ 108.205956][ T9802] ? __sys_sendmsg_sock+0xc0/0xc0 [ 108.211088][ T9802] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 108.216727][ T9802] ? do_syscall_64+0x26/0x790 [ 108.221425][ T9802] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 108.227495][ T9802] ? do_syscall_64+0x26/0x790 [ 108.232160][ T9802] __x64_sys_sendmsg+0x78/0xb0 [ 108.236907][ T9802] do_syscall_64+0xfa/0x790 [ 108.241407][ T9802] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 108.247304][ T9802] RIP: 0033:0x440379 [ 108.251190][ T9802] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 108.270937][ T9802] RSP: 002b:00007ffe13b0f578 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 108.279346][ T9802] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440379 [ 108.287419][ T9802] RDX: 0000000000000000 RSI: 0000000020000d00 RDI: 0000000000000004 [ 108.295387][ T9802] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 108.303369][ T9802] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000401c00 [ 108.311338][ T9802] R13: 0000000000401c90 R14: 0000000000000000 R15: 0000000000000000 [ 108.319434][ T9802] Modules linked in: [ 108.323386][ T9802] ---[ end trace 7650f69a92ef26cd ]--- [ 108.328853][ T9802] RIP: 0010:strlen+0x1f/0xa0 [ 108.333490][ T9802] Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24 [ 108.353130][ T9802] RSP: 0018:ffffc90002016e90 EFLAGS: 00010286 [ 108.359194][ T9802] RAX: dffffc0000000000 RBX: ffff88809cef2718 RCX: 1ffffffff14f6d4e [ 108.367267][ T9802] RDX: 0000000000000042 RSI: ffffffff8673a421 RDI: 0000000000000214 [ 108.375499][ T9802] RBP: ffffc90002016ea8 R08: ffff88808e3c8280 R09: ffffed10139de4e3 [ 108.383699][ T9802] R10: ffffed10139de4e2 R11: ffff88809cef2717 R12: 0000000000000214 [ 108.391800][ T9802] R13: 0000000000000204 R14: ffff8880a7ba2e00 R15: ffff88809cef2700 [ 108.400013][ T9802] FS: 0000000002520880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 108.409079][ T9802] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 108.415818][ T9802] CR2: 000056178d9b1110 CR3: 00000000a6ec6000 CR4: 00000000001406f0 [ 108.423845][ T9802] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 108.432132][ T9802] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 108.440176][ T9802] Kernel panic - not syncing: Fatal exception in interrupt [ 108.448948][ T9802] Kernel Offset: disabled [ 108.453292][ T9802] Rebooting in 86400 seconds..