[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 74.489578][ T27] audit: type=1800 audit(1578455305.966:25): pid=9376 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 74.522007][ T27] audit: type=1800 audit(1578455305.976:26): pid=9376 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 74.572820][ T27] audit: type=1800 audit(1578455305.976:27): pid=9376 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 '10.128.0.16' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 84.931994][ T9531] kasan: CONFIG_KASAN_INLINE enabled [ 84.937478][ T9531] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 84.945583][ T9531] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 84.952510][ T9531] CPU: 0 PID: 9531 Comm: syz-executor738 Not tainted 5.5.0-rc5-syzkaller #0 [ 84.961164][ T9531] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 84.971211][ T9531] RIP: 0010:hash_ip6_uadt+0x1f2/0x670 [ 84.976562][ T9531] Code: 11 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 c2 03 00 00 4c 89 f2 8b 48 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 80 [ 84.996149][ T9531] RSP: 0018:ffffc90001ae71b0 EFLAGS: 00010246 [ 85.011063][ T9531] RAX: dffffc0000000000 RBX: 1ffff9200035ce3a RCX: 0000000002000000 [ 85.019016][ T9531] RDX: 0000000000000000 RSI: ffffffff8679051b RDI: ffff8880a24f70e0 [ 85.026973][ T9531] RBP: ffffc90001ae72b8 R08: 0000000000000000 R09: 0000000000000000 [ 85.034931][ T9531] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: ffffc90001ae7320 [ 85.042974][ T9531] R13: ffff8880a8c23900 R14: 0000000000000000 R15: ffffc90001ae7200 [ 85.050924][ T9531] FS: 0000000000daf880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 85.060306][ T9531] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.066868][ T9531] CR2: 0000000020000058 CR3: 00000000a01b9000 CR4: 00000000001406f0 [ 85.074818][ T9531] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 85.082766][ T9531] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 85.090895][ T9531] Call Trace: [ 85.094164][ T9531] ? hash_ip_create+0xc10/0xc10 [ 85.099021][ T9531] ? hash_ip6_kadt+0x650/0x650 [ 85.103777][ T9531] ? nla_memcpy+0xb0/0xb0 [ 85.108088][ T9531] ? lock_acquire+0x190/0x410 [ 85.112748][ T9531] ? __kasan_check_read+0x11/0x20 [ 85.117763][ T9531] ip_set_utest+0x55b/0x890 [ 85.122278][ T9531] ? ip_set_put_byindex+0x490/0x490 [ 85.127455][ T9531] ? __mutex_lock+0x458/0x13c0 [ 85.132205][ T9531] ? ip_set_put_byindex+0x490/0x490 [ 85.137381][ T9531] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 85.142301][ T9531] ? nfnetlink_bind+0x2c0/0x2c0 [ 85.147230][ T9531] ? __kasan_check_read+0x11/0x20 [ 85.152235][ T9531] ? __lock_acquire+0x8a0/0x4a00 [ 85.157147][ T9531] ? __kasan_check_read+0x11/0x20 [ 85.162161][ T9531] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.168548][ T9531] ? apparmor_capable+0x497/0x900 [ 85.173560][ T9531] ? __kasan_check_read+0x11/0x20 [ 85.178559][ T9531] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 85.183995][ T9531] netlink_rcv_skb+0x177/0x450 [ 85.188735][ T9531] ? nfnetlink_bind+0x2c0/0x2c0 [ 85.193566][ T9531] ? netlink_ack+0xb50/0xb50 [ 85.198147][ T9531] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.204376][ T9531] ? ns_capable_common+0x93/0x100 [ 85.209402][ T9531] ? ns_capable+0x20/0x30 [ 85.213731][ T9531] ? __netlink_ns_capable+0x104/0x140 [ 85.219080][ T9531] nfnetlink_rcv+0x1ba/0x460 [ 85.223658][ T9531] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 85.229094][ T9531] ? netlink_deliver_tap+0x24a/0xbe0 [ 85.234382][ T9531] ? __kasan_check_write+0x14/0x20 [ 85.239495][ T9531] netlink_unicast+0x58c/0x7d0 [ 85.244253][ T9531] ? netlink_attachskb+0x870/0x870 [ 85.249347][ T9531] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 85.255051][ T9531] netlink_sendmsg+0x91c/0xea0 [ 85.259799][ T9531] ? netlink_unicast+0x7d0/0x7d0 [ 85.264774][ T9531] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 85.270302][ T9531] ? apparmor_socket_sendmsg+0x2a/0x30 [ 85.275755][ T9531] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.281975][ T9531] ? security_socket_sendmsg+0x8d/0xc0 [ 85.287429][ T9531] ? netlink_unicast+0x7d0/0x7d0 [ 85.292346][ T9531] sock_sendmsg+0xd7/0x130 [ 85.296746][ T9531] ____sys_sendmsg+0x753/0x880 [ 85.301491][ T9531] ? kernel_sendmsg+0x50/0x50 [ 85.306146][ T9531] ? lockdep_init_map+0x1be/0x6d0 [ 85.311153][ T9531] ___sys_sendmsg+0x100/0x170 [ 85.315809][ T9531] ? sendmsg_copy_msghdr+0x70/0x70 [ 85.320908][ T9531] ? __kasan_check_read+0x11/0x20 [ 85.325907][ T9531] ? __lock_acquire+0x8a0/0x4a00 [ 85.330821][ T9531] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.337050][ T9531] ? __this_cpu_preempt_check+0x35/0x190 [ 85.342661][ T9531] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.348889][ T9531] ? percpu_counter_add_batch+0x13c/0x190 [ 85.354853][ T9531] ? __fd_install+0x1bc/0x640 [ 85.359519][ T9531] ? find_held_lock+0x35/0x130 [ 85.364283][ T9531] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.370533][ T9531] ? __fget_light+0x1a9/0x230 [ 85.375207][ T9531] ? __fdget+0x1b/0x20 [ 85.379257][ T9531] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 85.385518][ T9531] __sys_sendmsg+0x105/0x1d0 [ 85.390093][ T9531] ? __sys_sendmsg_sock+0xc0/0xc0 [ 85.395119][ T9531] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 85.400559][ T9531] ? do_syscall_64+0x26/0x790 [ 85.405215][ T9531] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.411269][ T9531] ? do_syscall_64+0x26/0x790 [ 85.415941][ T9531] __x64_sys_sendmsg+0x78/0xb0 [ 85.420695][ T9531] do_syscall_64+0xfa/0x790 [ 85.425178][ T9531] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.431144][ T9531] RIP: 0033:0x4403c9 [ 85.435105][ T9531] 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 [ 85.454732][ T9531] RSP: 002b:00007ffff167aa68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 85.463120][ T9531] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004403c9 [ 85.471107][ T9531] RDX: 0000000020000000 RSI: 0000000020000180 RDI: 0000000000000005 [ 85.479079][ T9531] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 85.487175][ T9531] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000401c50 [ 85.495254][ T9531] R13: 0000000000401ce0 R14: 0000000000000000 R15: 0000000000000000 [ 85.504426][ T9531] Modules linked in: [ 85.508362][ T9531] ---[ end trace 4fdee12231db3b7c ]--- [ 85.513928][ T9531] RIP: 0010:hash_ip6_uadt+0x1f2/0x670 [ 85.519280][ T9531] Code: 11 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 c2 03 00 00 4c 89 f2 8b 48 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 80 [ 85.538907][ T9531] RSP: 0018:ffffc90001ae71b0 EFLAGS: 00010246 [ 85.544985][ T9531] RAX: dffffc0000000000 RBX: 1ffff9200035ce3a RCX: 0000000002000000 [ 85.552965][ T9531] RDX: 0000000000000000 RSI: ffffffff8679051b RDI: ffff8880a24f70e0 [ 85.560930][ T9531] RBP: ffffc90001ae72b8 R08: 0000000000000000 R09: 0000000000000000 [ 85.568912][ T9531] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: ffffc90001ae7320 [ 85.576886][ T9531] R13: ffff8880a8c23900 R14: 0000000000000000 R15: ffffc90001ae7200 [ 85.584887][ T9531] FS: 0000000000daf880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 85.593828][ T9531] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.600399][ T9531] CR2: 0000000020000058 CR3: 00000000a01b9000 CR4: 00000000001406f0 [ 85.608395][ T9531] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 85.616386][ T9531] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 85.624393][ T9531] Kernel panic - not syncing: Fatal exception in interrupt [ 85.632917][ T9531] Kernel Offset: disabled [ 85.637244][ T9531] Rebooting in 86400 seconds..