[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 69.061099][ T27] audit: type=1800 audit(1578535925.676:25): pid=9644 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 69.094407][ T27] audit: type=1800 audit(1578535925.676:26): pid=9644 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 69.134426][ T27] audit: type=1800 audit(1578535925.676:27): pid=9644 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 '10.128.0.49' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 81.718740][ T9797] kasan: CONFIG_KASAN_INLINE enabled [ 81.724424][ T9797] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 81.732590][ T9797] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 81.739515][ T9797] CPU: 1 PID: 9797 Comm: syz-executor385 Not tainted 5.5.0-rc5-syzkaller #0 [ 81.748176][ T9797] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.758327][ T9797] RIP: 0010:hash_ipportip6_uadt+0x226/0xa00 [ 81.764203][ T9797] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 14 07 00 00 4c 89 ea 45 8b 76 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 d9 [ 81.784058][ T9797] RSP: 0018:ffffc90001ab7170 EFLAGS: 00010246 [ 81.790221][ T9797] RAX: dffffc0000000000 RBX: ffffc90001ab7320 RCX: 0000000000000000 [ 81.798308][ T9797] RDX: 0000000000000000 RSI: ffffffff867d0153 RDI: ffff888095c5c830 [ 81.806288][ T9797] RBP: ffffc90001ab72b8 R08: 0000000000000000 R09: 0000000000000000 [ 81.814250][ T9797] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: ffff8880a7078e00 [ 81.822235][ T9797] R13: 0000000000000000 R14: 0000000004000000 R15: 0000000000000002 [ 81.830199][ T9797] FS: 00000000013a9880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 81.839112][ T9797] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.845725][ T9797] CR2: 0000000020000180 CR3: 000000009104d000 CR4: 00000000001406e0 [ 81.854837][ T9797] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.862804][ T9797] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.870848][ T9797] Call Trace: [ 81.874133][ T9797] ? hash_ipportip4_test+0x6c0/0x6c0 [ 81.879408][ T9797] ? hash_ipportip6_same_set+0x1a0/0x1a0 [ 81.886125][ T9797] ? ip_set_utest+0x4aa/0x890 [ 81.891347][ T9797] ? __kasan_check_read+0x11/0x20 [ 81.896387][ T9797] ip_set_utest+0x55b/0x890 [ 81.900894][ T9797] ? ip_set_put_byindex+0x490/0x490 [ 81.906234][ T9797] ? __mutex_lock+0x458/0x13c0 [ 81.911001][ T9797] ? ip_set_put_byindex+0x490/0x490 [ 81.916264][ T9797] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 81.921206][ T9797] ? nfnetlink_bind+0x2c0/0x2c0 [ 81.926051][ T9797] ? __kasan_check_read+0x11/0x20 [ 81.931072][ T9797] ? __lock_acquire+0x8a0/0x4a00 [ 81.936016][ T9797] ? save_stack+0x5c/0x90 [ 81.940373][ T9797] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.946617][ T9797] ? apparmor_capable+0x497/0x900 [ 81.951641][ T9797] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.958043][ T9797] ? __kasan_check_read+0x11/0x20 [ 81.963162][ T9797] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 81.968634][ T9797] netlink_rcv_skb+0x177/0x450 [ 81.973382][ T9797] ? nfnetlink_bind+0x2c0/0x2c0 [ 81.978227][ T9797] ? netlink_ack+0xb50/0xb50 [ 81.982809][ T9797] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.989037][ T9797] ? ns_capable_common+0x93/0x100 [ 81.994051][ T9797] ? ns_capable+0x20/0x30 [ 81.998378][ T9797] ? __netlink_ns_capable+0x104/0x140 [ 82.003737][ T9797] nfnetlink_rcv+0x1ba/0x460 [ 82.008329][ T9797] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 82.013787][ T9797] ? netlink_deliver_tap+0x24a/0xbe0 [ 82.019058][ T9797] ? __kasan_check_write+0x14/0x20 [ 82.024261][ T9797] netlink_unicast+0x58c/0x7d0 [ 82.029029][ T9797] ? netlink_attachskb+0x870/0x870 [ 82.034402][ T9797] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 82.040298][ T9797] ? __check_object_size+0x3d/0x437 [ 82.045492][ T9797] netlink_sendmsg+0x91c/0xea0 [ 82.050788][ T9797] ? netlink_unicast+0x7d0/0x7d0 [ 82.055825][ T9797] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 82.061376][ T9797] ? apparmor_socket_sendmsg+0x2a/0x30 [ 82.066844][ T9797] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.073086][ T9797] ? security_socket_sendmsg+0x8d/0xc0 [ 82.078857][ T9797] ? netlink_unicast+0x7d0/0x7d0 [ 82.083936][ T9797] sock_sendmsg+0xd7/0x130 [ 82.088608][ T9797] ____sys_sendmsg+0x753/0x880 [ 82.093375][ T9797] ? kernel_sendmsg+0x50/0x50 [ 82.098680][ T9797] ? _raw_spin_unlock+0x28/0x40 [ 82.103639][ T9797] ? do_huge_pmd_wp_page+0x53a/0x21c0 [ 82.109023][ T9797] ___sys_sendmsg+0x100/0x170 [ 82.113824][ T9797] ? sendmsg_copy_msghdr+0x70/0x70 [ 82.118942][ T9797] ? fault_around_bytes_set+0xa0/0xa0 [ 82.124399][ T9797] ? __do_page_fault+0x56a/0xd80 [ 82.129780][ T9797] ? find_held_lock+0x35/0x130 [ 82.134565][ T9797] ? __do_page_fault+0x56a/0xd80 [ 82.140035][ T9797] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.146274][ T9797] ? __fget_light+0x1a9/0x230 [ 82.150986][ T9797] ? __fdget+0x1b/0x20 [ 82.155043][ T9797] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 82.161388][ T9797] __sys_sendmsg+0x105/0x1d0 [ 82.165976][ T9797] ? __sys_sendmsg_sock+0xc0/0xc0 [ 82.170991][ T9797] ? down_read_non_owner+0x490/0x490 [ 82.176939][ T9797] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 82.182382][ T9797] ? do_syscall_64+0x26/0x790 [ 82.187048][ T9797] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.193102][ T9797] ? do_syscall_64+0x26/0x790 [ 82.197776][ T9797] __x64_sys_sendmsg+0x78/0xb0 [ 82.202523][ T9797] do_syscall_64+0xfa/0x790 [ 82.207008][ T9797] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.213151][ T9797] RIP: 0033:0x441469 [ 82.217047][ T9797] Code: e8 fc ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 9b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 82.237863][ T9797] RSP: 002b:00007ffc64d4b728 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 82.246276][ T9797] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441469 [ 82.254233][ T9797] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 82.262552][ T9797] RBP: 0000000000013f13 R08: 00000000004002c8 R09: 00000000004002c8 [ 82.270508][ T9797] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000402290 [ 82.278633][ T9797] R13: 0000000000402320 R14: 0000000000000000 R15: 0000000000000000 [ 82.286590][ T9797] Modules linked in: [ 82.290530][ T9797] ---[ end trace 2ba0892277dc52fb ]--- [ 82.296020][ T9797] RIP: 0010:hash_ipportip6_uadt+0x226/0xa00 [ 82.302247][ T9797] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 14 07 00 00 4c 89 ea 45 8b 76 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 d9 [ 82.322107][ T9797] RSP: 0018:ffffc90001ab7170 EFLAGS: 00010246 [ 82.328202][ T9797] RAX: dffffc0000000000 RBX: ffffc90001ab7320 RCX: 0000000000000000 [ 82.336281][ T9797] RDX: 0000000000000000 RSI: ffffffff867d0153 RDI: ffff888095c5c830 [ 82.344736][ T9797] RBP: ffffc90001ab72b8 R08: 0000000000000000 R09: 0000000000000000 [ 82.352700][ T9797] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: ffff8880a7078e00 [ 82.360732][ T9797] R13: 0000000000000000 R14: 0000000004000000 R15: 0000000000000002 [ 82.368832][ T9797] FS: 00000000013a9880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 82.377779][ T9797] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.384399][ T9797] CR2: 0000000020000180 CR3: 000000009104d000 CR4: 00000000001406e0 [ 82.392385][ T9797] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.400404][ T9797] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.409365][ T9797] Kernel panic - not syncing: Fatal exception in interrupt [ 82.418119][ T9797] Kernel Offset: disabled [ 82.422462][ T9797] Rebooting in 86400 seconds..