[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 67.854439][ T27] audit: type=1800 audit(1578428979.099:25): pid=9475 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 67.889888][ T27] audit: type=1800 audit(1578428979.099:26): pid=9475 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 67.911814][ T27] audit: type=1800 audit(1578428979.099:27): pid=9475 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 '10.128.1.21' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 80.654546][ T9629] kasan: CONFIG_KASAN_INLINE enabled [ 80.660069][ T9629] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 80.668134][ T9629] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 80.675067][ T9629] CPU: 1 PID: 9629 Comm: syz-executor382 Not tainted 5.5.0-rc4-syzkaller #0 [ 80.683717][ T9629] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.693893][ T9629] RIP: 0010:hash_netnet4_uadt+0x1ff/0xdf0 [ 80.699951][ T9629] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 e8 09 00 00 48 89 da 45 8b 6d 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ad [ 80.719919][ T9629] RSP: 0018:ffffc90001eb7180 EFLAGS: 00010246 [ 80.726063][ T9629] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 80.734013][ T9629] RDX: 0000000000000000 RSI: ffffffff8683c4bc RDI: ffff8880a95bec64 [ 80.742587][ T9629] RBP: ffffc90001eb72b8 R08: 0000000000000000 R09: 0000000000000000 [ 80.750550][ T9629] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: ffffc90001eb7320 [ 80.758498][ T9629] R13: 00000000d3650000 R14: ffffc90001eb7200 R15: ffff8880a6980600 [ 80.766460][ T9629] FS: 0000000001392880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 80.775453][ T9629] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.782015][ T9629] CR2: 0000000020000f98 CR3: 00000000a249a000 CR4: 00000000001406e0 [ 80.789976][ T9629] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.797926][ T9629] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.805875][ T9629] Call Trace: [ 80.809159][ T9629] ? hash_netnet6_test+0x17d0/0x17d0 [ 80.814423][ T9629] ? hash_netnet6_uadt+0xae0/0xae0 [ 80.819522][ T9629] ? nla_memcpy+0xb0/0xb0 [ 80.823834][ T9629] ? lock_acquire+0x190/0x410 [ 80.828499][ T9629] ? __kasan_check_read+0x11/0x20 [ 80.833944][ T9629] ip_set_utest+0x55b/0x890 [ 80.838522][ T9629] ? ip_set_put_byindex+0x490/0x490 [ 80.843702][ T9629] ? __mutex_lock+0x458/0x13c0 [ 80.848452][ T9629] ? ip_set_put_byindex+0x490/0x490 [ 80.853641][ T9629] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 80.858561][ T9629] ? nfnetlink_bind+0x2c0/0x2c0 [ 80.863394][ T9629] ? __kasan_check_read+0x11/0x20 [ 80.868397][ T9629] ? __lock_acquire+0x8a0/0x4a00 [ 80.873311][ T9629] ? save_stack+0x5c/0x90 [ 80.877713][ T9629] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 80.884107][ T9629] ? apparmor_capable+0x497/0x900 [ 80.889370][ T9629] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 80.895605][ T9629] ? __kasan_check_read+0x11/0x20 [ 80.900891][ T9629] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 80.906337][ T9629] netlink_rcv_skb+0x177/0x450 [ 80.911091][ T9629] ? nfnetlink_bind+0x2c0/0x2c0 [ 80.916022][ T9629] ? netlink_ack+0xb50/0xb50 [ 80.920592][ T9629] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 80.926918][ T9629] ? ns_capable_common+0x93/0x100 [ 80.931932][ T9629] ? ns_capable+0x20/0x30 [ 80.936249][ T9629] ? __netlink_ns_capable+0x104/0x140 [ 80.941730][ T9629] nfnetlink_rcv+0x1ba/0x460 [ 80.946306][ T9629] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 80.952790][ T9629] ? netlink_deliver_tap+0x24a/0xbe0 [ 80.958290][ T9629] ? __kasan_check_write+0x14/0x20 [ 80.963393][ T9629] netlink_unicast+0x58c/0x7d0 [ 80.968137][ T9629] ? netlink_attachskb+0x870/0x870 [ 80.973707][ T9629] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 80.979409][ T9629] ? __check_object_size+0x3d/0x437 [ 80.984617][ T9629] netlink_sendmsg+0x91c/0xea0 [ 80.989451][ T9629] ? netlink_unicast+0x7d0/0x7d0 [ 80.994466][ T9629] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 81.000956][ T9629] ? apparmor_socket_sendmsg+0x2a/0x30 [ 81.006485][ T9629] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.012727][ T9629] ? security_socket_sendmsg+0x8d/0xc0 [ 81.018168][ T9629] ? netlink_unicast+0x7d0/0x7d0 [ 81.023534][ T9629] sock_sendmsg+0xd7/0x130 [ 81.027930][ T9629] ____sys_sendmsg+0x753/0x880 [ 81.032672][ T9629] ? kernel_sendmsg+0x50/0x50 [ 81.037700][ T9629] ? lockdep_init_map+0x1be/0x6d0 [ 81.042967][ T9629] ___sys_sendmsg+0x100/0x170 [ 81.047620][ T9629] ? sendmsg_copy_msghdr+0x70/0x70 [ 81.052735][ T9629] ? __kasan_check_read+0x11/0x20 [ 81.057747][ T9629] ? __lock_acquire+0x8a0/0x4a00 [ 81.062760][ T9629] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.068988][ T9629] ? __this_cpu_preempt_check+0x35/0x190 [ 81.074599][ T9629] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.080818][ T9629] ? percpu_counter_add_batch+0x13c/0x190 [ 81.086539][ T9629] ? __fd_install+0x1bc/0x640 [ 81.091348][ T9629] ? find_held_lock+0x35/0x130 [ 81.096181][ T9629] ? __fd_install+0x1bc/0x640 [ 81.101434][ T9629] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.107697][ T9629] ? __fget_light+0x1a9/0x230 [ 81.112608][ T9629] ? __fdget+0x1b/0x20 [ 81.116752][ T9629] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 81.123007][ T9629] __sys_sendmsg+0x105/0x1d0 [ 81.127584][ T9629] ? __sys_sendmsg_sock+0xc0/0xc0 [ 81.132719][ T9629] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 81.138163][ T9629] ? do_syscall_64+0x26/0x790 [ 81.142825][ T9629] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.148872][ T9629] ? do_syscall_64+0x26/0x790 [ 81.153540][ T9629] __x64_sys_sendmsg+0x78/0xb0 [ 81.158304][ T9629] do_syscall_64+0xfa/0x790 [ 81.162807][ T9629] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.168682][ T9629] RIP: 0033:0x4408a9 [ 81.172568][ T9629] 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 [ 81.192513][ T9629] RSP: 002b:00007ffcaf150bf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 81.200910][ T9629] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004408a9 [ 81.208876][ T9629] RDX: 0000000020000000 RSI: 0000000020000140 RDI: 0000000000000004 [ 81.216828][ T9629] RBP: 00000000006ca018 R08: 000000000000000c R09: 00000000004002c8 [ 81.224779][ T9629] R10: 000000000000002c R11: 0000000000000246 R12: 0000000000402130 [ 81.232819][ T9629] R13: 00000000004021c0 R14: 0000000000000000 R15: 0000000000000000 [ 81.240774][ T9629] Modules linked in: [ 81.244700][ T9629] ---[ end trace f1631c6e3041eae4 ]--- [ 81.250178][ T9629] RIP: 0010:hash_netnet4_uadt+0x1ff/0xdf0 [ 81.255877][ T9629] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 e8 09 00 00 48 89 da 45 8b 6d 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ad [ 81.275514][ T9629] RSP: 0018:ffffc90001eb7180 EFLAGS: 00010246 [ 81.282025][ T9629] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 81.290034][ T9629] RDX: 0000000000000000 RSI: ffffffff8683c4bc RDI: ffff8880a95bec64 [ 81.298014][ T9629] RBP: ffffc90001eb72b8 R08: 0000000000000000 R09: 0000000000000000 [ 81.306005][ T9629] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: ffffc90001eb7320 [ 81.314015][ T9629] R13: 00000000d3650000 R14: ffffc90001eb7200 R15: ffff8880a6980600 [ 81.322003][ T9629] FS: 0000000001392880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 81.330943][ T9629] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.337508][ T9629] CR2: 0000000020000f98 CR3: 00000000a249a000 CR4: 00000000001406e0 [ 81.345491][ T9629] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.353477][ T9629] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.361475][ T9629] Kernel panic - not syncing: Fatal exception in interrupt [ 81.370784][ T9629] Kernel Offset: disabled [ 81.375112][ T9629] Rebooting in 86400 seconds..