[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 70.131881][ T27] audit: type=1800 audit(1578439364.586:25): pid=9485 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 70.151784][ T27] audit: type=1800 audit(1578439364.596:26): pid=9485 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 70.174361][ T27] audit: type=1800 audit(1578439364.596:27): pid=9485 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 '10.128.0.178' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 82.891144][ T9639] kasan: CONFIG_KASAN_INLINE enabled [ 82.896584][ T9639] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 82.904675][ T9639] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 82.911603][ T9639] CPU: 1 PID: 9639 Comm: syz-executor020 Not tainted 5.5.0-rc5-syzkaller #0 [ 82.920250][ T9639] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.930399][ T9639] RIP: 0010:hash_netport4_uadt+0x218/0xff0 [ 82.936185][ T9639] 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 [ 82.955788][ T9639] RSP: 0018:ffffc90001dd7150 EFLAGS: 00010246 [ 82.961831][ T9639] RAX: dffffc0000000000 RBX: ffffc90001dd7310 RCX: 0000000000000000 [ 82.970442][ T9639] RDX: 0000000000000000 RSI: ffffffff86814235 RDI: ffff8880a68cb48c [ 82.978396][ T9639] RBP: ffffc90001dd72a8 R08: 0000000000000000 R09: 0000000000000000 [ 82.986352][ T9639] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: 0000000000000000 [ 82.994301][ T9639] R13: 0000000000000000 R14: ffffc90001dd7210 R15: 0000000000000002 [ 83.002316][ T9639] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:000000000908c840 [ 83.011223][ T9639] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 83.017786][ T9639] CR2: 0000000020000106 CR3: 00000000a6cd9000 CR4: 00000000001406e0 [ 83.025750][ T9639] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 83.033697][ T9639] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 83.041641][ T9639] Call Trace: [ 83.044927][ T9639] ? hash_netport6_test+0x1320/0x1320 [ 83.050277][ T9639] ? hash_netport6_kadt+0x740/0x740 [ 83.055452][ T9639] ? nla_memcpy+0xb0/0xb0 [ 83.059768][ T9639] ? ip_set_utest+0x4aa/0x890 [ 83.064423][ T9639] ? __kasan_check_read+0x11/0x20 [ 83.069425][ T9639] ip_set_utest+0x55b/0x890 [ 83.073905][ T9639] ? ip_set_put_byindex+0x490/0x490 [ 83.079088][ T9639] ? __mutex_lock+0x458/0x13c0 [ 83.083833][ T9639] ? ip_set_put_byindex+0x490/0x490 [ 83.089006][ T9639] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 83.093942][ T9639] ? nfnetlink_bind+0x2c0/0x2c0 [ 83.098769][ T9639] ? __kasan_check_read+0x11/0x20 [ 83.103772][ T9639] ? __lock_acquire+0x8a0/0x4a00 [ 83.108703][ T9639] ? save_stack+0x5c/0x90 [ 83.113023][ T9639] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.119254][ T9639] ? apparmor_capable+0x497/0x900 [ 83.124258][ T9639] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.130489][ T9639] ? __kasan_check_read+0x11/0x20 [ 83.135521][ T9639] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 83.140963][ T9639] netlink_rcv_skb+0x177/0x450 [ 83.145749][ T9639] ? nfnetlink_bind+0x2c0/0x2c0 [ 83.150584][ T9639] ? netlink_ack+0xb50/0xb50 [ 83.155204][ T9639] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.161425][ T9639] ? ns_capable_common+0x93/0x100 [ 83.166425][ T9639] ? ns_capable+0x20/0x30 [ 83.170748][ T9639] ? __netlink_ns_capable+0x104/0x140 [ 83.176100][ T9639] nfnetlink_rcv+0x1ba/0x460 [ 83.180683][ T9639] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 83.186128][ T9639] ? netlink_deliver_tap+0x24a/0xbe0 [ 83.191394][ T9639] ? __kasan_check_write+0x14/0x20 [ 83.196485][ T9639] netlink_unicast+0x58c/0x7d0 [ 83.201268][ T9639] ? netlink_attachskb+0x870/0x870 [ 83.206360][ T9639] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 83.212059][ T9639] ? __check_object_size+0x3d/0x437 [ 83.217236][ T9639] netlink_sendmsg+0x91c/0xea0 [ 83.221977][ T9639] ? netlink_unicast+0x7d0/0x7d0 [ 83.226907][ T9639] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 83.232446][ T9639] ? apparmor_socket_sendmsg+0x2a/0x30 [ 83.237883][ T9639] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.244101][ T9639] ? security_socket_sendmsg+0x8d/0xc0 [ 83.249533][ T9639] ? netlink_unicast+0x7d0/0x7d0 [ 83.254455][ T9639] sock_sendmsg+0xd7/0x130 [ 83.258862][ T9639] ____sys_sendmsg+0x753/0x880 [ 83.263604][ T9639] ? kernel_sendmsg+0x50/0x50 [ 83.268256][ T9639] ? lockdep_init_map+0x1be/0x6d0 [ 83.273269][ T9639] ___sys_sendmsg+0x100/0x170 [ 83.277923][ T9639] ? sendmsg_copy_msghdr+0x70/0x70 [ 83.283025][ T9639] ? __kasan_check_read+0x11/0x20 [ 83.288037][ T9639] ? __lock_acquire+0x8a0/0x4a00 [ 83.292992][ T9639] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.299218][ T9639] ? __this_cpu_preempt_check+0x35/0x190 [ 83.304830][ T9639] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.311045][ T9639] ? percpu_counter_add_batch+0x13c/0x190 [ 83.316744][ T9639] ? __fd_install+0x1bc/0x640 [ 83.321402][ T9639] ? find_held_lock+0x35/0x130 [ 83.326147][ T9639] ? __fd_install+0x1bc/0x640 [ 83.330826][ T9639] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.337054][ T9639] ? __fget_light+0x1a9/0x230 [ 83.341714][ T9639] ? __fdget+0x1b/0x20 [ 83.345808][ T9639] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 83.352030][ T9639] __sys_sendmsg+0x105/0x1d0 [ 83.356664][ T9639] ? __sys_sendmsg_sock+0xc0/0xc0 [ 83.361695][ T9639] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 83.367193][ T9639] ? do_fast_syscall_32+0xd1/0xe16 [ 83.372289][ T9639] ? entry_SYSENTER_compat+0x70/0x7f [ 83.377557][ T9639] ? do_fast_syscall_32+0xd1/0xe16 [ 83.382663][ T9639] __ia32_compat_sys_sendmsg+0x7a/0xb0 [ 83.388100][ T9639] do_fast_syscall_32+0x27b/0xe16 [ 83.393104][ T9639] entry_SYSENTER_compat+0x70/0x7f [ 83.398216][ T9639] RIP: 0023:0xf7f54a39 [ 83.402265][ T9639] Code: 00 00 00 89 d3 5b 5e 5f 5d c3 b8 80 96 98 00 eb c4 8b 04 24 c3 8b 1c 24 c3 8b 34 24 c3 8b 3c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 83.421895][ T9639] RSP: 002b:00000000ffdce36c EFLAGS: 00000202 ORIG_RAX: 0000000000000172 [ 83.430299][ T9639] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000140 [ 83.438293][ T9639] RDX: 0000000000041000 RSI: 00000000080eb080 RDI: 00000000ffdce3c0 [ 83.446245][ T9639] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 83.454195][ T9639] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 83.462144][ T9639] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 83.470100][ T9639] Modules linked in: [ 83.474027][ T9639] ---[ end trace 1b01874711820f2e ]--- [ 83.479486][ T9639] RIP: 0010:hash_netport4_uadt+0x218/0xff0 [ 83.485302][ T9639] 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 [ 83.504917][ T9639] RSP: 0018:ffffc90001dd7150 EFLAGS: 00010246 [ 83.510961][ T9639] RAX: dffffc0000000000 RBX: ffffc90001dd7310 RCX: 0000000000000000 [ 83.518938][ T9639] RDX: 0000000000000000 RSI: ffffffff86814235 RDI: ffff8880a68cb48c [ 83.526908][ T9639] RBP: ffffc90001dd72a8 R08: 0000000000000000 R09: 0000000000000000 [ 83.534884][ T9639] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: 0000000000000000 [ 83.542841][ T9639] R13: 0000000000000000 R14: ffffc90001dd7210 R15: 0000000000000002 [ 83.550821][ T9639] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:000000000908c840 [ 83.559751][ T9639] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 83.566356][ T9639] CR2: 0000000020000106 CR3: 00000000a6cd9000 CR4: 00000000001406e0 [ 83.574334][ T9639] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 83.582290][ T9639] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 83.590271][ T9639] Kernel panic - not syncing: Fatal exception in interrupt [ 83.598706][ T9639] Kernel Offset: disabled [ 83.603075][ T9639] Rebooting in 86400 seconds..