[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 70.847470][ T28] audit: type=1800 audit(1578473377.987:25): pid=9420 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 70.868263][ T28] audit: type=1800 audit(1578473377.987:26): pid=9420 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 70.916963][ T28] audit: type=1800 audit(1578473377.987:27): pid=9420 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 '10.128.0.12' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 105.356824][ T9576] kasan: CONFIG_KASAN_INLINE enabled [ 105.362569][ T9576] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 105.370695][ T9576] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 105.377630][ T9576] CPU: 0 PID: 9576 Comm: syz-executor452 Not tainted 5.5.0-rc5-syzkaller #0 [ 105.386801][ T9576] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 105.396868][ T9576] RIP: 0010:hash_netport4_uadt+0x218/0xff0 [ 105.402831][ T9576] 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 [ 105.425231][ T9576] RSP: 0018:ffffc90001df7150 EFLAGS: 00010246 [ 105.431282][ T9576] RAX: dffffc0000000000 RBX: ffffc90001df7310 RCX: 0000000000000000 [ 105.439412][ T9576] RDX: 0000000000000000 RSI: ffffffff86811235 RDI: ffff8880a04b6830 [ 105.447361][ T9576] RBP: ffffc90001df72a8 R08: 0000000000000000 R09: 0000000000000000 [ 105.455322][ T9576] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 105.463274][ T9576] R13: 0000000004000000 R14: ffffc90001df7210 R15: 0000000000000002 [ 105.471933][ T9576] FS: 0000000000000000(0000) GS:ffff8880ae800000(0063) knlGS:00000000099ad840 [ 105.480843][ T9576] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 105.487416][ T9576] CR2: 0000000020000f86 CR3: 000000009fa65000 CR4: 00000000001406f0 [ 105.495368][ T9576] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 105.503320][ T9576] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 105.511280][ T9576] Call Trace: [ 105.514639][ T9576] ? hash_netport6_test+0x1320/0x1320 [ 105.520003][ T9576] ? hash_netport6_kadt+0x740/0x740 [ 105.525326][ T9576] ? nla_memcpy+0xb0/0xb0 [ 105.529652][ T9576] ? ip_set_utest+0x4aa/0x890 [ 105.534313][ T9576] ? __kasan_check_read+0x11/0x20 [ 105.539327][ T9576] ip_set_utest+0x55b/0x890 [ 105.543945][ T9576] ? ip_set_put_byindex+0x490/0x490 [ 105.549135][ T9576] ? __mutex_lock+0x458/0x13c0 [ 105.553912][ T9576] ? ip_set_put_byindex+0x490/0x490 [ 105.559099][ T9576] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 105.564137][ T9576] ? nfnetlink_bind+0x2c0/0x2c0 [ 105.569058][ T9576] ? __kasan_check_read+0x11/0x20 [ 105.574064][ T9576] ? __lock_acquire+0x8a0/0x4a00 [ 105.579075][ T9576] ? save_stack+0x5c/0x90 [ 105.583389][ T9576] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.589616][ T9576] ? apparmor_capable+0x497/0x900 [ 105.594655][ T9576] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.600877][ T9576] ? __kasan_check_read+0x11/0x20 [ 105.605907][ T9576] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 105.611362][ T9576] netlink_rcv_skb+0x177/0x450 [ 105.616115][ T9576] ? nfnetlink_bind+0x2c0/0x2c0 [ 105.620945][ T9576] ? netlink_ack+0xb50/0xb50 [ 105.625600][ T9576] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.632081][ T9576] ? ns_capable_common+0x93/0x100 [ 105.637327][ T9576] ? ns_capable+0x20/0x30 [ 105.641654][ T9576] ? __netlink_ns_capable+0x104/0x140 [ 105.647068][ T9576] nfnetlink_rcv+0x1ba/0x460 [ 105.651648][ T9576] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 105.657149][ T9576] ? netlink_deliver_tap+0x24a/0xbe0 [ 105.662423][ T9576] ? __kasan_check_write+0x14/0x20 [ 105.667518][ T9576] netlink_unicast+0x58c/0x7d0 [ 105.672279][ T9576] ? netlink_attachskb+0x870/0x870 [ 105.677377][ T9576] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 105.683190][ T9576] ? __check_object_size+0x3d/0x437 [ 105.688478][ T9576] netlink_sendmsg+0x91c/0xea0 [ 105.693351][ T9576] ? netlink_unicast+0x7d0/0x7d0 [ 105.698474][ T9576] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 105.704050][ T9576] ? apparmor_socket_sendmsg+0x2a/0x30 [ 105.709493][ T9576] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.715714][ T9576] ? security_socket_sendmsg+0x8d/0xc0 [ 105.721156][ T9576] ? netlink_unicast+0x7d0/0x7d0 [ 105.726074][ T9576] sock_sendmsg+0xd7/0x130 [ 105.730742][ T9576] ____sys_sendmsg+0x753/0x880 [ 105.735498][ T9576] ? kernel_sendmsg+0x50/0x50 [ 105.740156][ T9576] ? lockdep_init_map+0x1be/0x6d0 [ 105.745165][ T9576] ___sys_sendmsg+0x100/0x170 [ 105.749836][ T9576] ? sendmsg_copy_msghdr+0x70/0x70 [ 105.754938][ T9576] ? __kasan_check_read+0x11/0x20 [ 105.759964][ T9576] ? __lock_acquire+0x8a0/0x4a00 [ 105.764898][ T9576] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.771133][ T9576] ? __this_cpu_preempt_check+0x35/0x190 [ 105.776750][ T9576] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.783026][ T9576] ? percpu_counter_add_batch+0x13c/0x190 [ 105.788877][ T9576] ? __fd_install+0x1bc/0x640 [ 105.793556][ T9576] ? find_held_lock+0x35/0x130 [ 105.798304][ T9576] ? __fd_install+0x1bc/0x640 [ 105.802974][ T9576] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.809388][ T9576] ? __fget_light+0x1a9/0x230 [ 105.814393][ T9576] ? __fdget+0x1b/0x20 [ 105.818441][ T9576] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 105.824676][ T9576] __sys_sendmsg+0x105/0x1d0 [ 105.829266][ T9576] ? __sys_sendmsg_sock+0xc0/0xc0 [ 105.834385][ T9576] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 105.839822][ T9576] ? do_fast_syscall_32+0xd1/0xe16 [ 105.844912][ T9576] ? entry_SYSENTER_compat+0x70/0x7f [ 105.850175][ T9576] ? do_fast_syscall_32+0xd1/0xe16 [ 105.855900][ T9576] __ia32_compat_sys_sendmsg+0x7a/0xb0 [ 105.861451][ T9576] do_fast_syscall_32+0x27b/0xe16 [ 105.866462][ T9576] entry_SYSENTER_compat+0x70/0x7f [ 105.872347][ T9576] RIP: 0023:0xf7f4ba39 [ 105.876401][ T9576] 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 [ 105.896087][ T9576] RSP: 002b:00000000fffc4f6c EFLAGS: 00000202 ORIG_RAX: 0000000000000172 [ 105.904500][ T9576] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000180 [ 105.928080][ T9576] RDX: 0000000000000000 RSI: 00000000080ea080 RDI: 00000000fffc4fc0 [ 105.936032][ T9576] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 105.951189][ T9576] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 105.959317][ T9576] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 105.968249][ T9576] Modules linked in: [ 105.972787][ T9576] ---[ end trace 8da47ccd27edaebf ]--- [ 105.978256][ T9576] RIP: 0010:hash_netport4_uadt+0x218/0xff0 [ 105.984078][ T9576] 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 [ 106.003806][ T9576] RSP: 0018:ffffc90001df7150 EFLAGS: 00010246 [ 106.011017][ T9576] RAX: dffffc0000000000 RBX: ffffc90001df7310 RCX: 0000000000000000 [ 106.018983][ T9576] RDX: 0000000000000000 RSI: ffffffff86811235 RDI: ffff8880a04b6830 [ 106.026970][ T9576] RBP: ffffc90001df72a8 R08: 0000000000000000 R09: 0000000000000000 [ 106.035306][ T9576] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 106.043634][ T9576] R13: 0000000004000000 R14: ffffc90001df7210 R15: 0000000000000002 [ 106.051799][ T9576] FS: 0000000000000000(0000) GS:ffff8880ae800000(0063) knlGS:00000000099ad840 [ 106.061048][ T9576] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 106.067734][ T9576] CR2: 0000000020000f86 CR3: 000000009fa65000 CR4: 00000000001406f0 [ 106.075740][ T9576] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 106.083802][ T9576] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 106.092552][ T9576] Kernel panic - not syncing: Fatal exception in interrupt [ 106.101419][ T9576] Kernel Offset: disabled [ 106.105871][ T9576] Rebooting in 86400 seconds..