[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 67.949279][ T27] audit: type=1800 audit(1578450617.885:25): pid=9512 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 67.981220][ T27] audit: type=1800 audit(1578450617.885:26): pid=9512 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 68.025919][ T27] audit: type=1800 audit(1578450617.885:27): pid=9512 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 '10.128.0.80' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 81.216597][ T9666] kasan: CONFIG_KASAN_INLINE enabled [ 81.222182][ T9666] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 81.230394][ T9666] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 81.237348][ T9666] CPU: 0 PID: 9666 Comm: syz-executor061 Not tainted 5.5.0-rc4-syzkaller #0 [ 81.245999][ T9666] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.256066][ T9666] RIP: 0010:hash_ipportnet4_uadt+0x20b/0x13e0 [ 81.262118][ T9666] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 71 0c 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 2c [ 81.281707][ T9666] RSP: 0018:ffffc90001e67150 EFLAGS: 00010246 [ 81.287819][ T9666] RAX: dffffc0000000000 RBX: ffffc90001e67320 RCX: 0000000000000000 [ 81.295775][ T9666] RDX: 0000000000000000 RSI: ffffffff8681d788 RDI: ffff88809acb80a0 [ 81.303749][ T9666] RBP: ffffc90001e672b8 R08: 0000000000000000 R09: 0000000000000000 [ 81.311715][ T9666] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 81.319675][ T9666] R13: 0000000004000000 R14: ffffc90001e67220 R15: ffff8880a7693a00 [ 81.327627][ T9666] FS: 0000000002562880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 81.336544][ T9666] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.343106][ T9666] CR2: 0000000020000086 CR3: 000000008f739000 CR4: 00000000001406f0 [ 81.351060][ T9666] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.359021][ T9666] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.366968][ T9666] Call Trace: [ 81.370240][ T9666] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 81.376113][ T9666] ? hash_ipportnet6_test+0x10c0/0x10c0 [ 81.381656][ T9666] ? hash_ipportnet6_uadt+0xeb0/0xeb0 [ 81.387018][ T9666] ? nla_memcpy+0xb0/0xb0 [ 81.391398][ T9666] ? ip_set_utest+0x4aa/0x890 [ 81.396075][ T9666] ? __kasan_check_read+0x11/0x20 [ 81.401149][ T9666] ip_set_utest+0x55b/0x890 [ 81.405689][ T9666] ? ip_set_put_byindex+0x490/0x490 [ 81.410881][ T9666] ? __mutex_lock+0x458/0x13c0 [ 81.415656][ T9666] ? ip_set_put_byindex+0x490/0x490 [ 81.420838][ T9666] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 81.425776][ T9666] ? nfnetlink_bind+0x2c0/0x2c0 [ 81.430618][ T9666] ? __kasan_check_read+0x11/0x20 [ 81.435623][ T9666] ? __lock_acquire+0x8a0/0x4a00 [ 81.440628][ T9666] ? save_stack+0x5c/0x90 [ 81.444938][ T9666] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.451179][ T9666] ? apparmor_capable+0x497/0x900 [ 81.456184][ T9666] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.462404][ T9666] ? __kasan_check_read+0x11/0x20 [ 81.467421][ T9666] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 81.472883][ T9666] netlink_rcv_skb+0x177/0x450 [ 81.477632][ T9666] ? nfnetlink_bind+0x2c0/0x2c0 [ 81.482463][ T9666] ? netlink_ack+0xb50/0xb50 [ 81.487032][ T9666] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.493262][ T9666] ? ns_capable_common+0x93/0x100 [ 81.498276][ T9666] ? ns_capable+0x20/0x30 [ 81.502586][ T9666] ? __netlink_ns_capable+0x104/0x140 [ 81.507936][ T9666] nfnetlink_rcv+0x1ba/0x460 [ 81.512521][ T9666] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 81.517972][ T9666] ? netlink_deliver_tap+0x24a/0xbe0 [ 81.523251][ T9666] ? __kasan_check_write+0x14/0x20 [ 81.528356][ T9666] netlink_unicast+0x58c/0x7d0 [ 81.533115][ T9666] ? netlink_attachskb+0x870/0x870 [ 81.538206][ T9666] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 81.543922][ T9666] ? __check_object_size+0x3d/0x437 [ 81.549100][ T9666] netlink_sendmsg+0x91c/0xea0 [ 81.553851][ T9666] ? netlink_unicast+0x7d0/0x7d0 [ 81.558775][ T9666] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 81.564299][ T9666] ? apparmor_socket_sendmsg+0x2a/0x30 [ 81.569766][ T9666] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.575994][ T9666] ? security_socket_sendmsg+0x8d/0xc0 [ 81.581441][ T9666] ? netlink_unicast+0x7d0/0x7d0 [ 81.586354][ T9666] sock_sendmsg+0xd7/0x130 [ 81.590760][ T9666] ____sys_sendmsg+0x753/0x880 [ 81.595519][ T9666] ? kernel_sendmsg+0x50/0x50 [ 81.600175][ T9666] ? lockdep_init_map+0x1be/0x6d0 [ 81.605180][ T9666] ___sys_sendmsg+0x100/0x170 [ 81.609836][ T9666] ? sendmsg_copy_msghdr+0x70/0x70 [ 81.614925][ T9666] ? __kasan_check_read+0x11/0x20 [ 81.619927][ T9666] ? __lock_acquire+0x8a0/0x4a00 [ 81.624857][ T9666] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.631094][ T9666] ? __this_cpu_preempt_check+0x35/0x190 [ 81.636745][ T9666] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.642976][ T9666] ? percpu_counter_add_batch+0x13c/0x190 [ 81.648686][ T9666] ? __fd_install+0x1bc/0x640 [ 81.653338][ T9666] ? find_held_lock+0x35/0x130 [ 81.658097][ T9666] ? __fd_install+0x1bc/0x640 [ 81.662780][ T9666] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.668998][ T9666] ? __fget_light+0x1a9/0x230 [ 81.673668][ T9666] ? __fdget+0x1b/0x20 [ 81.677716][ T9666] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 81.683957][ T9666] __sys_sendmsg+0x105/0x1d0 [ 81.688524][ T9666] ? __sys_sendmsg_sock+0xc0/0xc0 [ 81.693534][ T9666] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 81.698981][ T9666] ? do_syscall_64+0x26/0x790 [ 81.703637][ T9666] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.709702][ T9666] ? do_syscall_64+0x26/0x790 [ 81.714369][ T9666] __x64_sys_sendmsg+0x78/0xb0 [ 81.719117][ T9666] do_syscall_64+0xfa/0x790 [ 81.723601][ T9666] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.729467][ T9666] RIP: 0033:0x440899 [ 81.733361][ T9666] 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 [ 81.752944][ T9666] RSP: 002b:00007ffd5e89e798 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 81.761331][ T9666] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440899 [ 81.769293][ T9666] RDX: 000000000c0000c4 RSI: 0000000020000280 RDI: 0000000000000004 [ 81.777255][ T9666] RBP: 00000000006ca018 R08: 0000000000000015 R09: 00000000004002c8 [ 81.785204][ T9666] R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000402120 [ 81.793165][ T9666] R13: 00000000004021b0 R14: 0000000000000000 R15: 0000000000000000 [ 81.801116][ T9666] Modules linked in: [ 81.805051][ T9666] ---[ end trace 95ed6fae8abcaef1 ]--- [ 81.810528][ T9666] RIP: 0010:hash_ipportnet4_uadt+0x20b/0x13e0 [ 81.816589][ T9666] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 71 0c 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 2c [ 81.836216][ T9666] RSP: 0018:ffffc90001e67150 EFLAGS: 00010246 [ 81.842306][ T9666] RAX: dffffc0000000000 RBX: ffffc90001e67320 RCX: 0000000000000000 [ 81.850371][ T9666] RDX: 0000000000000000 RSI: ffffffff8681d788 RDI: ffff88809acb80a0 [ 81.858332][ T9666] RBP: ffffc90001e672b8 R08: 0000000000000000 R09: 0000000000000000 [ 81.866327][ T9666] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 81.874322][ T9666] R13: 0000000004000000 R14: ffffc90001e67220 R15: ffff8880a7693a00 [ 81.882304][ T9666] FS: 0000000002562880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 81.891240][ T9666] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.897810][ T9666] CR2: 0000000020000086 CR3: 000000008f739000 CR4: 00000000001406f0 [ 81.905816][ T9666] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.913804][ T9666] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.921787][ T9666] Kernel panic - not syncing: Fatal exception in interrupt [ 81.930368][ T9666] Kernel Offset: disabled [ 81.934692][ T9666] Rebooting in 86400 seconds..