[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 68.481725][ T26] audit: type=1800 audit(1578457481.915:25): pid=9508 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 68.506665][ T26] audit: type=1800 audit(1578457481.915:26): pid=9508 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 68.557819][ T26] audit: type=1800 audit(1578457481.915:27): pid=9508 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 '10.128.0.171' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 82.642207][ T9660] kasan: CONFIG_KASAN_INLINE enabled [ 82.647922][ T9660] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 82.656372][ T9660] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 82.663554][ T9660] CPU: 1 PID: 9660 Comm: syz-executor389 Not tainted 5.5.0-rc5-syzkaller #0 [ 82.672363][ T9660] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.683373][ T9660] RIP: 0010:hash_netport4_uadt+0x218/0xff0 [ 82.689188][ T9660] 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 [ 82.709324][ T9660] RSP: 0018:ffffc90001d87160 EFLAGS: 00010246 [ 82.715502][ T9660] RAX: dffffc0000000000 RBX: ffffc90001d87320 RCX: 0000000000000000 [ 82.723826][ T9660] RDX: 0000000000000000 RSI: ffffffff86811235 RDI: ffff88809a3aec8c [ 82.731884][ T9660] RBP: ffffc90001d872b8 R08: 0000000000000000 R09: 0000000000000000 [ 82.740126][ T9660] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: 0000000000000000 [ 82.748231][ T9660] R13: 0000000000000000 R14: ffffc90001d87220 R15: 0000000000000002 [ 82.756538][ T9660] FS: 00000000019d3880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 82.765731][ T9660] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.772311][ T9660] CR2: 0000000020000106 CR3: 00000000a8488000 CR4: 00000000001406e0 [ 82.780386][ T9660] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.788371][ T9660] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.798016][ T9660] Call Trace: [ 82.801421][ T9660] ? hash_netport6_test+0x1320/0x1320 [ 82.806797][ T9660] ? hash_netport6_kadt+0x740/0x740 [ 82.812182][ T9660] ? nla_memcpy+0xb0/0xb0 [ 82.816571][ T9660] ? ip_set_utest+0x4aa/0x890 [ 82.821252][ T9660] ? __kasan_check_read+0x11/0x20 [ 82.826313][ T9660] ip_set_utest+0x55b/0x890 [ 82.830820][ T9660] ? ip_set_put_byindex+0x490/0x490 [ 82.836105][ T9660] ? __mutex_lock+0x458/0x13c0 [ 82.841060][ T9660] ? ip_set_put_byindex+0x490/0x490 [ 82.846313][ T9660] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 82.851256][ T9660] ? nfnetlink_bind+0x2c0/0x2c0 [ 82.856165][ T9660] ? __kasan_check_read+0x11/0x20 [ 82.861187][ T9660] ? __lock_acquire+0x8a0/0x4a00 [ 82.866301][ T9660] ? save_stack+0x5c/0x90 [ 82.870895][ T9660] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.877181][ T9660] ? apparmor_capable+0x497/0x900 [ 82.882205][ T9660] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.888701][ T9660] ? __kasan_check_read+0x11/0x20 [ 82.893721][ T9660] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 82.899362][ T9660] netlink_rcv_skb+0x177/0x450 [ 82.904119][ T9660] ? nfnetlink_bind+0x2c0/0x2c0 [ 82.909018][ T9660] ? netlink_ack+0xb50/0xb50 [ 82.913711][ T9660] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.920002][ T9660] ? ns_capable_common+0x93/0x100 [ 82.925015][ T9660] ? ns_capable+0x20/0x30 [ 82.929339][ T9660] ? __netlink_ns_capable+0x104/0x140 [ 82.934703][ T9660] nfnetlink_rcv+0x1ba/0x460 [ 82.939294][ T9660] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 82.944744][ T9660] ? netlink_deliver_tap+0x24a/0xbe0 [ 82.950196][ T9660] ? __kasan_check_write+0x14/0x20 [ 82.955332][ T9660] netlink_unicast+0x58c/0x7d0 [ 82.960351][ T9660] ? netlink_attachskb+0x870/0x870 [ 82.965440][ T9660] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 82.971155][ T9660] ? __check_object_size+0x3d/0x437 [ 82.976852][ T9660] netlink_sendmsg+0x91c/0xea0 [ 82.983475][ T9660] ? netlink_unicast+0x7d0/0x7d0 [ 82.988597][ T9660] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 82.994141][ T9660] ? apparmor_socket_sendmsg+0x2a/0x30 [ 82.999684][ T9660] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.006473][ T9660] ? security_socket_sendmsg+0x8d/0xc0 [ 83.011941][ T9660] ? netlink_unicast+0x7d0/0x7d0 [ 83.016978][ T9660] sock_sendmsg+0xd7/0x130 [ 83.021595][ T9660] ____sys_sendmsg+0x753/0x880 [ 83.026375][ T9660] ? kernel_sendmsg+0x50/0x50 [ 83.031153][ T9660] ? lockdep_init_map+0x1be/0x6d0 [ 83.036368][ T9660] ___sys_sendmsg+0x100/0x170 [ 83.041217][ T9660] ? sendmsg_copy_msghdr+0x70/0x70 [ 83.046529][ T9660] ? __kasan_check_read+0x11/0x20 [ 83.051561][ T9660] ? __lock_acquire+0x8a0/0x4a00 [ 83.056588][ T9660] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.062871][ T9660] ? __this_cpu_preempt_check+0x35/0x190 [ 83.068522][ T9660] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.074934][ T9660] ? percpu_counter_add_batch+0x13c/0x190 [ 83.080839][ T9660] ? __fd_install+0x1bc/0x640 [ 83.085557][ T9660] ? find_held_lock+0x35/0x130 [ 83.090327][ T9660] ? __fd_install+0x1bc/0x640 [ 83.095003][ T9660] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.101250][ T9660] ? __fget_light+0x1a9/0x230 [ 83.105920][ T9660] ? __fdget+0x1b/0x20 [ 83.110228][ T9660] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 83.117604][ T9660] __sys_sendmsg+0x105/0x1d0 [ 83.122533][ T9660] ? __sys_sendmsg_sock+0xc0/0xc0 [ 83.127777][ T9660] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 83.133233][ T9660] ? do_syscall_64+0x26/0x790 [ 83.137903][ T9660] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 83.144053][ T9660] ? do_syscall_64+0x26/0x790 [ 83.149091][ T9660] __x64_sys_sendmsg+0x78/0xb0 [ 83.153966][ T9660] do_syscall_64+0xfa/0x790 [ 83.158482][ T9660] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 83.164676][ T9660] RIP: 0033:0x4407a9 [ 83.168578][ T9660] 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 [ 83.188601][ T9660] RSP: 002b:00007ffdf08a7568 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 83.197159][ T9660] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004407a9 [ 83.205509][ T9660] RDX: 0000000000041000 RSI: 0000000020000140 RDI: 0000000000000004 [ 83.213740][ T9660] RBP: 00000000006ca018 R08: 000000000000000c R09: 00000000004002c8 [ 83.224210][ T9660] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000402030 [ 83.232185][ T9660] R13: 00000000004020c0 R14: 0000000000000000 R15: 0000000000000000 [ 83.240517][ T9660] Modules linked in: [ 83.244613][ T9660] ---[ end trace 9b5d1ab3f829ed70 ]--- [ 83.250331][ T9660] RIP: 0010:hash_netport4_uadt+0x218/0xff0 [ 83.256179][ T9660] 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 [ 83.276368][ T9660] RSP: 0018:ffffc90001d87160 EFLAGS: 00010246 [ 83.282813][ T9660] RAX: dffffc0000000000 RBX: ffffc90001d87320 RCX: 0000000000000000 [ 83.291107][ T9660] RDX: 0000000000000000 RSI: ffffffff86811235 RDI: ffff88809a3aec8c [ 83.299504][ T9660] RBP: ffffc90001d872b8 R08: 0000000000000000 R09: 0000000000000000 [ 83.307728][ T9660] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: 0000000000000000 [ 83.315719][ T9660] R13: 0000000000000000 R14: ffffc90001d87220 R15: 0000000000000002 [ 83.324188][ T9660] FS: 00000000019d3880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 83.333292][ T9660] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 83.340077][ T9660] CR2: 0000000020000106 CR3: 00000000a8488000 CR4: 00000000001406e0 [ 83.348202][ T9660] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 83.356191][ T9660] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 83.364187][ T9660] Kernel panic - not syncing: Fatal exception in interrupt [ 83.372616][ T9660] Kernel Offset: disabled [ 83.377034][ T9660] Rebooting in 86400 seconds..