[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 67.580504][ T28] audit: type=1800 audit(1578413852.139:25): pid=9400 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 67.602146][ T28] audit: type=1800 audit(1578413852.149:26): pid=9400 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 67.630896][ T28] audit: type=1800 audit(1578413852.149:27): pid=9400 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.55' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 76.327099][ T9552] kasan: CONFIG_KASAN_INLINE enabled [ 76.332654][ T9552] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 76.340947][ T9552] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 76.347887][ T9552] CPU: 1 PID: 9552 Comm: syz-executor388 Not tainted 5.5.0-rc4-syzkaller #0 [ 76.356534][ T9552] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.366576][ T9552] RIP: 0010:hash_netport4_uadt+0x218/0xff0 [ 76.372707][ T9552] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 4d 0a 00 00 4c 89 e2 45 8b 6d 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 4c [ 76.392375][ T9552] RSP: 0018:ffffc900018e7160 EFLAGS: 00010246 [ 76.398415][ T9552] RAX: dffffc0000000000 RBX: ffffc900018e7320 RCX: 0000000000000000 [ 76.406382][ T9552] RDX: 0000000000000000 RSI: ffffffff86814225 RDI: ffff8880a825f48c [ 76.414434][ T9552] RBP: ffffc900018e72b8 R08: 0000000000000000 R09: 0000000000000000 [ 76.422382][ T9552] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: 0000000000000000 [ 76.430330][ T9552] R13: 0000000000000000 R14: ffffc900018e7220 R15: 0000000000000002 [ 76.438279][ T9552] FS: 0000000001c2c880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 76.447186][ T9552] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.453745][ T9552] CR2: 0000000020000106 CR3: 0000000098272000 CR4: 00000000001406e0 [ 76.461698][ T9552] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.469654][ T9552] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.477609][ T9552] Call Trace: [ 76.480881][ T9552] ? hash_netport6_test+0x1320/0x1320 [ 76.486240][ T9552] ? hash_netport6_kadt+0x740/0x740 [ 76.491429][ T9552] ? nla_memcpy+0xb0/0xb0 [ 76.495736][ T9552] ? ip_set_utest+0x4aa/0x890 [ 76.500389][ T9552] ? __kasan_check_read+0x11/0x20 [ 76.505403][ T9552] ip_set_utest+0x55b/0x890 [ 76.509886][ T9552] ? ip_set_put_byindex+0x490/0x490 [ 76.515064][ T9552] ? __mutex_lock+0x458/0x13c0 [ 76.519812][ T9552] ? ip_set_put_byindex+0x490/0x490 [ 76.524999][ T9552] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 76.529916][ T9552] ? nfnetlink_bind+0x2c0/0x2c0 [ 76.534760][ T9552] ? __kasan_check_read+0x11/0x20 [ 76.539760][ T9552] ? __lock_acquire+0x8a0/0x4a00 [ 76.544680][ T9552] ? save_stack+0x5c/0x90 [ 76.549003][ T9552] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.555239][ T9552] ? apparmor_capable+0x497/0x900 [ 76.560243][ T9552] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.566461][ T9552] ? __kasan_check_read+0x11/0x20 [ 76.571463][ T9552] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 76.576907][ T9552] netlink_rcv_skb+0x177/0x450 [ 76.581674][ T9552] ? nfnetlink_bind+0x2c0/0x2c0 [ 76.586519][ T9552] ? netlink_ack+0xb50/0xb50 [ 76.591085][ T9552] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.597299][ T9552] ? ns_capable_common+0x93/0x100 [ 76.602301][ T9552] ? ns_capable+0x20/0x30 [ 76.606610][ T9552] ? __netlink_ns_capable+0x104/0x140 [ 76.611976][ T9552] nfnetlink_rcv+0x1ba/0x460 [ 76.616545][ T9552] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 76.621983][ T9552] ? netlink_deliver_tap+0x24a/0xbe0 [ 76.627255][ T9552] ? __kasan_check_write+0x14/0x20 [ 76.632370][ T9552] netlink_unicast+0x58c/0x7d0 [ 76.637116][ T9552] ? netlink_attachskb+0x870/0x870 [ 76.642256][ T9552] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 76.647958][ T9552] ? __check_object_size+0x3d/0x437 [ 76.653146][ T9552] netlink_sendmsg+0x91c/0xea0 [ 76.657892][ T9552] ? netlink_unicast+0x7d0/0x7d0 [ 76.662809][ T9552] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 76.668345][ T9552] ? apparmor_socket_sendmsg+0x2a/0x30 [ 76.673784][ T9552] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.680001][ T9552] ? security_socket_sendmsg+0x8d/0xc0 [ 76.685455][ T9552] ? netlink_unicast+0x7d0/0x7d0 [ 76.690372][ T9552] sock_sendmsg+0xd7/0x130 [ 76.699991][ T9552] ____sys_sendmsg+0x753/0x880 [ 76.704745][ T9552] ? kernel_sendmsg+0x50/0x50 [ 76.709401][ T9552] ? lockdep_init_map+0x1be/0x6d0 [ 76.714422][ T9552] ___sys_sendmsg+0x100/0x170 [ 76.719086][ T9552] ? sendmsg_copy_msghdr+0x70/0x70 [ 76.724194][ T9552] ? __kasan_check_read+0x11/0x20 [ 76.729194][ T9552] ? __lock_acquire+0x8a0/0x4a00 [ 76.734111][ T9552] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.740329][ T9552] ? __this_cpu_preempt_check+0x35/0x190 [ 76.745939][ T9552] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.752175][ T9552] ? percpu_counter_add_batch+0x13c/0x190 [ 76.757873][ T9552] ? __fd_install+0x1bc/0x640 [ 76.762569][ T9552] ? find_held_lock+0x35/0x130 [ 76.767322][ T9552] ? __fd_install+0x1bc/0x640 [ 76.772159][ T9552] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.778395][ T9552] ? __fget_light+0x1a9/0x230 [ 76.783098][ T9552] ? __fdget+0x1b/0x20 [ 76.787153][ T9552] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 76.793376][ T9552] __sys_sendmsg+0x105/0x1d0 [ 76.797944][ T9552] ? __sys_sendmsg_sock+0xc0/0xc0 [ 76.803025][ T9552] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 76.808471][ T9552] ? do_syscall_64+0x26/0x790 [ 76.813130][ T9552] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.819176][ T9552] ? do_syscall_64+0x26/0x790 [ 76.823849][ T9552] __x64_sys_sendmsg+0x78/0xb0 [ 76.828593][ T9552] do_syscall_64+0xfa/0x790 [ 76.833104][ T9552] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.838974][ T9552] RIP: 0033:0x4407e9 [ 76.842854][ T9552] 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 [ 76.862878][ T9552] RSP: 002b:00007ffe59553b98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 76.871268][ T9552] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004407e9 [ 76.879229][ T9552] RDX: 0000000000041000 RSI: 0000000020000140 RDI: 0000000000000004 [ 76.887188][ T9552] RBP: 00000000006ca018 R08: 0000000000000008 R09: 00000000004002c8 [ 76.895165][ T9552] R10: 000000000000002c R11: 0000000000000246 R12: 0000000000402070 [ 76.903205][ T9552] R13: 0000000000402100 R14: 0000000000000000 R15: 0000000000000000 [ 76.911261][ T9552] Modules linked in: [ 76.915416][ T9552] ---[ end trace ac1f09a852e03d3e ]--- [ 76.920894][ T9552] RIP: 0010:hash_netport4_uadt+0x218/0xff0 [ 76.926680][ T9552] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 4d 0a 00 00 4c 89 e2 45 8b 6d 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 4c [ 76.946308][ T9552] RSP: 0018:ffffc900018e7160 EFLAGS: 00010246 [ 76.952383][ T9552] RAX: dffffc0000000000 RBX: ffffc900018e7320 RCX: 0000000000000000 [ 76.960334][ T9552] RDX: 0000000000000000 RSI: ffffffff86814225 RDI: ffff8880a825f48c [ 76.968389][ T9552] RBP: ffffc900018e72b8 R08: 0000000000000000 R09: 0000000000000000 [ 76.976522][ T9552] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: 0000000000000000 [ 76.984512][ T9552] R13: 0000000000000000 R14: ffffc900018e7220 R15: 0000000000000002 [ 76.992509][ T9552] FS: 0000000001c2c880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 77.001443][ T9552] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.008025][ T9552] CR2: 0000000020000106 CR3: 0000000098272000 CR4: 00000000001406e0 [ 77.016033][ T9552] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.024018][ T9552] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.032000][ T9552] Kernel panic - not syncing: Fatal exception in interrupt [ 77.040753][ T9552] Kernel Offset: disabled [ 77.045098][ T9552] Rebooting in 86400 seconds..