[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 85.360568][ T27] audit: type=1800 audit(1578438383.596:25): 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 [ 85.385163][ T27] audit: type=1800 audit(1578438383.606:26): 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 [ 85.435094][ T27] audit: type=1800 audit(1578438383.606:27): 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 '10.128.0.24' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 96.663780][ T9638] kasan: CONFIG_KASAN_INLINE enabled [ 96.669216][ T9638] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 96.677334][ T9638] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 96.684275][ T9638] CPU: 0 PID: 9638 Comm: syz-executor797 Not tainted 5.5.0-rc5-syzkaller #0 [ 96.692933][ T9638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 96.702980][ T9638] RIP: 0010:hash_netport4_uadt+0x218/0xff0 [ 96.708779][ T9638] 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 [ 96.728456][ T9638] RSP: 0018:ffffc90001d37160 EFLAGS: 00010246 [ 96.734497][ T9638] RAX: dffffc0000000000 RBX: ffffc90001d37320 RCX: 0000000000000000 [ 96.742444][ T9638] RDX: 0000000000000000 RSI: ffffffff86814235 RDI: ffff8880a784108c [ 96.750396][ T9638] RBP: ffffc90001d372b8 R08: 0000000000000000 R09: 0000000000000000 [ 96.758356][ T9638] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 96.766301][ T9638] R13: 0000000000000000 R14: ffffc90001d37220 R15: 0000000000000002 [ 96.774314][ T9638] FS: 00000000011e4880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 96.783244][ T9638] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 96.789811][ T9638] CR2: 0000000020000106 CR3: 000000008927c000 CR4: 00000000001406f0 [ 96.797777][ T9638] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 96.805725][ T9638] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 96.813669][ T9638] Call Trace: [ 96.816939][ T9638] ? hash_netport6_test+0x1320/0x1320 [ 96.822302][ T9638] ? hash_netport6_kadt+0x740/0x740 [ 96.827492][ T9638] ? nla_memcpy+0xb0/0xb0 [ 96.831799][ T9638] ? ip_set_utest+0x4aa/0x890 [ 96.836455][ T9638] ? __kasan_check_read+0x11/0x20 [ 96.841468][ T9638] ip_set_utest+0x55b/0x890 [ 96.845951][ T9638] ? ip_set_put_byindex+0x490/0x490 [ 96.851152][ T9638] ? __mutex_lock+0x458/0x13c0 [ 96.855901][ T9638] ? ip_set_put_byindex+0x490/0x490 [ 96.861084][ T9638] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 96.866030][ T9638] ? nfnetlink_bind+0x2c0/0x2c0 [ 96.870889][ T9638] ? __kasan_check_read+0x11/0x20 [ 96.875898][ T9638] ? __lock_acquire+0x8a0/0x4a00 [ 96.880810][ T9638] ? save_stack+0x5c/0x90 [ 96.885123][ T9638] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 96.891353][ T9638] ? apparmor_capable+0x497/0x900 [ 96.896380][ T9638] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 96.902602][ T9638] ? __kasan_check_read+0x11/0x20 [ 96.907654][ T9638] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 96.913143][ T9638] netlink_rcv_skb+0x177/0x450 [ 96.917888][ T9638] ? nfnetlink_bind+0x2c0/0x2c0 [ 96.922718][ T9638] ? netlink_ack+0xb50/0xb50 [ 96.927296][ T9638] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 96.933513][ T9638] ? ns_capable_common+0x93/0x100 [ 96.938511][ T9638] ? ns_capable+0x20/0x30 [ 96.942815][ T9638] ? __netlink_ns_capable+0x104/0x140 [ 96.948164][ T9638] nfnetlink_rcv+0x1ba/0x460 [ 96.952728][ T9638] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 96.958160][ T9638] ? netlink_deliver_tap+0x24a/0xbe0 [ 96.963458][ T9638] ? __kasan_check_write+0x14/0x20 [ 96.968587][ T9638] netlink_unicast+0x58c/0x7d0 [ 96.973372][ T9638] ? netlink_attachskb+0x870/0x870 [ 96.978460][ T9638] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 96.984155][ T9638] ? __check_object_size+0x3d/0x437 [ 96.989331][ T9638] netlink_sendmsg+0x91c/0xea0 [ 96.994074][ T9638] ? netlink_unicast+0x7d0/0x7d0 [ 96.999000][ T9638] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 97.004520][ T9638] ? apparmor_socket_sendmsg+0x2a/0x30 [ 97.009969][ T9638] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 97.016197][ T9638] ? security_socket_sendmsg+0x8d/0xc0 [ 97.021634][ T9638] ? netlink_unicast+0x7d0/0x7d0 [ 97.026550][ T9638] sock_sendmsg+0xd7/0x130 [ 97.030945][ T9638] ____sys_sendmsg+0x753/0x880 [ 97.035686][ T9638] ? kernel_sendmsg+0x50/0x50 [ 97.040345][ T9638] ? lockdep_init_map+0x1be/0x6d0 [ 97.045354][ T9638] ___sys_sendmsg+0x100/0x170 [ 97.050007][ T9638] ? sendmsg_copy_msghdr+0x70/0x70 [ 97.055094][ T9638] ? __kasan_check_read+0x11/0x20 [ 97.060091][ T9638] ? __lock_acquire+0x8a0/0x4a00 [ 97.065005][ T9638] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 97.071232][ T9638] ? __this_cpu_preempt_check+0x35/0x190 [ 97.077024][ T9638] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 97.083248][ T9638] ? percpu_counter_add_batch+0x13c/0x190 [ 97.088951][ T9638] ? __fd_install+0x1bc/0x640 [ 97.093690][ T9638] ? find_held_lock+0x35/0x130 [ 97.098443][ T9638] ? __fd_install+0x1bc/0x640 [ 97.103102][ T9638] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 97.109317][ T9638] ? __fget_light+0x1a9/0x230 [ 97.113985][ T9638] ? __fdget+0x1b/0x20 [ 97.118054][ T9638] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 97.124291][ T9638] __sys_sendmsg+0x105/0x1d0 [ 97.128878][ T9638] ? __sys_sendmsg_sock+0xc0/0xc0 [ 97.133896][ T9638] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 97.139331][ T9638] ? do_syscall_64+0x26/0x790 [ 97.143982][ T9638] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 97.150031][ T9638] ? do_syscall_64+0x26/0x790 [ 97.154687][ T9638] __x64_sys_sendmsg+0x78/0xb0 [ 97.159431][ T9638] do_syscall_64+0xfa/0x790 [ 97.163927][ T9638] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 97.169811][ T9638] RIP: 0033:0x4407e9 [ 97.173694][ T9638] 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 [ 97.193280][ T9638] RSP: 002b:00007ffcbb4073c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 97.201669][ T9638] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004407e9 [ 97.209628][ T9638] RDX: 0000000000041000 RSI: 0000000020000140 RDI: 0000000000000004 [ 97.217575][ T9638] RBP: 00000000006ca018 R08: 0000000000000008 R09: 00000000004002c8 [ 97.225521][ T9638] R10: 000000000000002c R11: 0000000000000246 R12: 0000000000402070 [ 97.233469][ T9638] R13: 0000000000402100 R14: 0000000000000000 R15: 0000000000000000 [ 97.241421][ T9638] Modules linked in: [ 97.245346][ T9638] ---[ end trace 3fe21ce243d42c14 ]--- [ 97.250818][ T9638] RIP: 0010:hash_netport4_uadt+0x218/0xff0 [ 97.256642][ T9638] 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 [ 97.276251][ T9638] RSP: 0018:ffffc90001d37160 EFLAGS: 00010246 [ 97.282326][ T9638] RAX: dffffc0000000000 RBX: ffffc90001d37320 RCX: 0000000000000000 [ 97.290335][ T9638] RDX: 0000000000000000 RSI: ffffffff86814235 RDI: ffff8880a784108c [ 97.298321][ T9638] RBP: ffffc90001d372b8 R08: 0000000000000000 R09: 0000000000000000 [ 97.306324][ T9638] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 97.314475][ T9638] R13: 0000000000000000 R14: ffffc90001d37220 R15: 0000000000000002 [ 97.322424][ T9638] FS: 00000000011e4880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 97.331354][ T9638] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 97.337937][ T9638] CR2: 0000000020000106 CR3: 000000008927c000 CR4: 00000000001406f0 [ 97.345928][ T9638] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 97.356867][ T9638] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 97.364851][ T9638] Kernel panic - not syncing: Fatal exception in interrupt [ 97.373335][ T9638] Kernel Offset: disabled [ 97.377659][ T9638] Rebooting in 86400 seconds..