[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 71.197613][ T26] audit: type=1800 audit(1578447979.375:25): pid=9416 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 71.236363][ T26] audit: type=1800 audit(1578447979.375:26): pid=9416 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 71.274286][ T26] audit: type=1800 audit(1578447979.375:27): pid=9416 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 '10.128.0.223' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 79.382590][ T9571] kasan: CONFIG_KASAN_INLINE enabled [ 79.388330][ T9571] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 79.396786][ T9571] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 79.404760][ T9571] CPU: 0 PID: 9571 Comm: syz-executor346 Not tainted 5.5.0-rc4-syzkaller #0 [ 79.413455][ T9571] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.424116][ T9571] RIP: 0010:hash_netport4_uadt+0x218/0xff0 [ 79.430630][ T9571] 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 [ 79.450682][ T9571] RSP: 0018:ffffc90001d27160 EFLAGS: 00010246 [ 79.456731][ T9571] RAX: dffffc0000000000 RBX: ffffc90001d27320 RCX: 0000000000000000 [ 79.464697][ T9571] RDX: 0000000000000000 RSI: ffffffff8684cb35 RDI: ffff8880a9324030 [ 79.472660][ T9571] RBP: ffffc90001d272b8 R08: 0000000000000000 R09: 0000000000000000 [ 79.481413][ T9571] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 79.489481][ T9571] R13: 0000000004000000 R14: ffffc90001d27220 R15: 0000000000000002 [ 79.497984][ T9571] FS: 0000000001cba880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 79.506978][ T9571] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.513905][ T9571] CR2: 0000000020000f86 CR3: 00000000a1683000 CR4: 00000000001406f0 [ 79.522405][ T9571] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.530369][ T9571] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.538321][ T9571] Call Trace: [ 79.541591][ T9571] ? hash_netport6_test+0x1320/0x1320 [ 79.546953][ T9571] ? hash_netport6_kadt+0x740/0x740 [ 79.552131][ T9571] ? nla_memcpy+0xb0/0xb0 [ 79.556452][ T9571] ? ip_set_utest+0x4aa/0x890 [ 79.561140][ T9571] ? __kasan_check_read+0x11/0x20 [ 79.566142][ T9571] ip_set_utest+0x55b/0x890 [ 79.570635][ T9571] ? ip_set_put_byindex+0x490/0x490 [ 79.575812][ T9571] ? __mutex_lock+0x458/0x13c0 [ 79.580571][ T9571] ? ip_set_put_byindex+0x490/0x490 [ 79.585746][ T9571] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 79.590695][ T9571] ? nfnetlink_bind+0x2c0/0x2c0 [ 79.595535][ T9571] ? __kasan_check_read+0x11/0x20 [ 79.600595][ T9571] ? __lock_acquire+0x8a0/0x4a00 [ 79.605527][ T9571] ? save_stack+0x5c/0x90 [ 79.609855][ T9571] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.616332][ T9571] ? apparmor_capable+0x497/0x900 [ 79.621386][ T9571] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.627745][ T9571] ? __kasan_check_read+0x11/0x20 [ 79.632762][ T9571] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 79.638222][ T9571] netlink_rcv_skb+0x177/0x450 [ 79.642978][ T9571] ? nfnetlink_bind+0x2c0/0x2c0 [ 79.647811][ T9571] ? netlink_ack+0xb50/0xb50 [ 79.652384][ T9571] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.658623][ T9571] ? ns_capable_common+0x93/0x100 [ 79.663758][ T9571] ? ns_capable+0x20/0x30 [ 79.668083][ T9571] ? __netlink_ns_capable+0x104/0x140 [ 79.673436][ T9571] nfnetlink_rcv+0x1ba/0x460 [ 79.678007][ T9571] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 79.683466][ T9571] ? netlink_deliver_tap+0x24a/0xbe0 [ 79.688755][ T9571] ? __kasan_check_write+0x14/0x20 [ 79.693847][ T9571] netlink_unicast+0x58c/0x7d0 [ 79.698596][ T9571] ? netlink_attachskb+0x870/0x870 [ 79.703700][ T9571] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 79.709415][ T9571] ? __check_object_size+0x3d/0x437 [ 79.714687][ T9571] netlink_sendmsg+0x91c/0xea0 [ 79.719448][ T9571] ? netlink_unicast+0x7d0/0x7d0 [ 79.724360][ T9571] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 79.729885][ T9571] ? apparmor_socket_sendmsg+0x2a/0x30 [ 79.735320][ T9571] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.741536][ T9571] ? security_socket_sendmsg+0x8d/0xc0 [ 79.746974][ T9571] ? netlink_unicast+0x7d0/0x7d0 [ 79.751908][ T9571] sock_sendmsg+0xd7/0x130 [ 79.756320][ T9571] ____sys_sendmsg+0x753/0x880 [ 79.761070][ T9571] ? kernel_sendmsg+0x50/0x50 [ 79.765732][ T9571] ? lockdep_init_map+0x1be/0x6d0 [ 79.770786][ T9571] ___sys_sendmsg+0x100/0x170 [ 79.775444][ T9571] ? sendmsg_copy_msghdr+0x70/0x70 [ 79.780576][ T9571] ? __kasan_check_read+0x11/0x20 [ 79.785578][ T9571] ? __lock_acquire+0x8a0/0x4a00 [ 79.790508][ T9571] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.796728][ T9571] ? __this_cpu_preempt_check+0x35/0x190 [ 79.802429][ T9571] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.808646][ T9571] ? percpu_counter_add_batch+0x13c/0x190 [ 79.814343][ T9571] ? __fd_install+0x1bc/0x640 [ 79.819028][ T9571] ? find_held_lock+0x35/0x130 [ 79.823781][ T9571] ? __fd_install+0x1bc/0x640 [ 79.828464][ T9571] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.834697][ T9571] ? __fget_light+0x1a9/0x230 [ 79.839353][ T9571] ? __fdget+0x1b/0x20 [ 79.843411][ T9571] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 79.849630][ T9571] __sys_sendmsg+0x105/0x1d0 [ 79.854200][ T9571] ? __sys_sendmsg_sock+0xc0/0xc0 [ 79.859208][ T9571] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 79.864655][ T9571] ? do_syscall_64+0x26/0x790 [ 79.869313][ T9571] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.875368][ T9571] ? do_syscall_64+0x26/0x790 [ 79.880035][ T9571] __x64_sys_sendmsg+0x78/0xb0 [ 79.884775][ T9571] do_syscall_64+0xfa/0x790 [ 79.889258][ T9571] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.895163][ T9571] RIP: 0033:0x4405e9 [ 79.899050][ T9571] 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 [ 79.918774][ T9571] RSP: 002b:00007ffe02cdc2f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 79.927211][ T9571] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004405e9 [ 79.936203][ T9571] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000004 [ 79.944240][ T9571] RBP: 00000000006ca018 R08: 0000000000000024 R09: 00000000004002c8 [ 79.952193][ T9571] R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000401e70 [ 79.960233][ T9571] R13: 0000000000401f00 R14: 0000000000000000 R15: 0000000000000000 [ 79.968187][ T9571] Modules linked in: [ 79.972105][ T9571] ---[ end trace aa6e3187290711fa ]--- [ 79.977579][ T9571] RIP: 0010:hash_netport4_uadt+0x218/0xff0 [ 79.983378][ T9571] 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 [ 80.002992][ T9571] RSP: 0018:ffffc90001d27160 EFLAGS: 00010246 [ 80.009091][ T9571] RAX: dffffc0000000000 RBX: ffffc90001d27320 RCX: 0000000000000000 [ 80.017096][ T9571] RDX: 0000000000000000 RSI: ffffffff8684cb35 RDI: ffff8880a9324030 [ 80.025126][ T9571] RBP: ffffc90001d272b8 R08: 0000000000000000 R09: 0000000000000000 [ 80.033155][ T9571] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 80.041283][ T9571] R13: 0000000004000000 R14: ffffc90001d27220 R15: 0000000000000002 [ 80.049367][ T9571] FS: 0000000001cba880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 80.058325][ T9571] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.064912][ T9571] CR2: 0000000020000f86 CR3: 00000000a1683000 CR4: 00000000001406f0 [ 80.072962][ T9571] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.081091][ T9571] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.089090][ T9571] Kernel panic - not syncing: Fatal exception in interrupt [ 80.097810][ T9571] Kernel Offset: disabled [ 80.102216][ T9571] Rebooting in 86400 seconds..