[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 70.282914][ T27] audit: type=1800 audit(1578425280.794:25): pid=9176 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 70.323698][ T27] audit: type=1800 audit(1578425280.794:26): pid=9176 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 70.383767][ T27] audit: type=1800 audit(1578425280.794:27): pid=9176 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 syzkaller login: [ 89.425953][ T9328] kasan: CONFIG_KASAN_INLINE enabled [ 89.431332][ T9328] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 89.439498][ T9328] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 89.446435][ T9328] CPU: 0 PID: 9328 Comm: syz-executor866 Not tainted 5.5.0-rc4-syzkaller #0 [ 89.455083][ T9328] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 89.465287][ T9328] RIP: 0010:hash_net4_uadt+0x200/0x940 [ 89.470728][ T9328] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 92 06 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 57 [ 89.490309][ T9328] RSP: 0018:ffffc90002007190 EFLAGS: 00010246 [ 89.496398][ T9328] RAX: dffffc0000000000 RBX: ffffc90002007320 RCX: 0000000000000000 [ 89.504448][ T9328] RDX: 0000000000000000 RSI: ffffffff86801a0d RDI: ffff88809aba2048 [ 89.512397][ T9328] RBP: ffffc900020072b8 R08: 0000000000000000 R09: 0000000000000000 [ 89.520354][ T9328] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 89.528318][ T9328] R13: 0000000009000000 R14: ffff8880a485b000 R15: 0000000000000002 [ 89.536267][ T9328] FS: 0000000001f44880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 89.545183][ T9328] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.551747][ T9328] CR2: 0000000020000446 CR3: 00000000a8e94000 CR4: 00000000001406f0 [ 89.559696][ T9328] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 89.567645][ T9328] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 89.575601][ T9328] Call Trace: [ 89.578898][ T9328] ? hash_net_create+0xa60/0xa60 [ 89.583818][ T9328] ? hash_net6_uadt+0x880/0x880 [ 89.588653][ T9328] ? nla_memcpy+0xb0/0xb0 [ 89.592970][ T9328] ? ip_set_utest+0x4aa/0x890 [ 89.597626][ T9328] ? __kasan_check_read+0x11/0x20 [ 89.602627][ T9328] ip_set_utest+0x55b/0x890 [ 89.607117][ T9328] ? ip_set_put_byindex+0x490/0x490 [ 89.612293][ T9328] ? __mutex_lock+0x458/0x13c0 [ 89.617081][ T9328] ? ip_set_put_byindex+0x490/0x490 [ 89.622316][ T9328] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 89.627380][ T9328] ? nfnetlink_bind+0x2c0/0x2c0 [ 89.632224][ T9328] ? __kasan_check_read+0x11/0x20 [ 89.637558][ T9328] ? __lock_acquire+0x8a0/0x4a00 [ 89.642475][ T9328] ? save_stack+0x5c/0x90 [ 89.646793][ T9328] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.653891][ T9328] ? apparmor_capable+0x497/0x900 [ 89.659015][ T9328] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.665250][ T9328] ? __kasan_check_read+0x11/0x20 [ 89.671424][ T9328] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 89.676877][ T9328] netlink_rcv_skb+0x177/0x450 [ 89.682574][ T9328] ? nfnetlink_bind+0x2c0/0x2c0 [ 89.687852][ T9328] ? netlink_ack+0xb50/0xb50 [ 89.692427][ T9328] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.698651][ T9328] ? ns_capable_common+0x93/0x100 [ 89.703749][ T9328] ? ns_capable+0x20/0x30 [ 89.708056][ T9328] ? __netlink_ns_capable+0x104/0x140 [ 89.716534][ T9328] nfnetlink_rcv+0x1ba/0x460 [ 89.721233][ T9328] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 89.726670][ T9328] ? netlink_deliver_tap+0x24a/0xbe0 [ 89.732118][ T9328] ? __kasan_check_write+0x14/0x20 [ 89.737558][ T9328] netlink_unicast+0x58c/0x7d0 [ 89.742323][ T9328] ? netlink_attachskb+0x870/0x870 [ 89.747419][ T9328] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 89.753124][ T9328] ? __check_object_size+0x3d/0x437 [ 89.758299][ T9328] netlink_sendmsg+0x91c/0xea0 [ 89.763041][ T9328] ? netlink_unicast+0x7d0/0x7d0 [ 89.767956][ T9328] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 89.773496][ T9328] ? apparmor_socket_sendmsg+0x2a/0x30 [ 89.778933][ T9328] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.785161][ T9328] ? security_socket_sendmsg+0x8d/0xc0 [ 89.790618][ T9328] ? netlink_unicast+0x7d0/0x7d0 [ 89.795579][ T9328] sock_sendmsg+0xd7/0x130 [ 89.799993][ T9328] ____sys_sendmsg+0x753/0x880 [ 89.804741][ T9328] ? kernel_sendmsg+0x50/0x50 [ 89.809400][ T9328] ? lockdep_init_map+0x1be/0x6d0 [ 89.814408][ T9328] ___sys_sendmsg+0x100/0x170 [ 89.819115][ T9328] ? sendmsg_copy_msghdr+0x70/0x70 [ 89.824208][ T9328] ? __kasan_check_read+0x11/0x20 [ 89.829206][ T9328] ? __lock_acquire+0x8a0/0x4a00 [ 89.834121][ T9328] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.840339][ T9328] ? __this_cpu_preempt_check+0x35/0x190 [ 89.845949][ T9328] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.852164][ T9328] ? percpu_counter_add_batch+0x13c/0x190 [ 89.857859][ T9328] ? __fd_install+0x1bc/0x640 [ 89.862510][ T9328] ? find_held_lock+0x35/0x130 [ 89.867290][ T9328] ? __fd_install+0x1bc/0x640 [ 89.871945][ T9328] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.878158][ T9328] ? __fget_light+0x1a9/0x230 [ 89.882812][ T9328] ? __fdget+0x1b/0x20 [ 89.886858][ T9328] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 89.893075][ T9328] __sys_sendmsg+0x105/0x1d0 [ 89.897690][ T9328] ? __sys_sendmsg_sock+0xc0/0xc0 [ 89.902696][ T9328] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 89.908135][ T9328] ? do_syscall_64+0x26/0x790 [ 89.912800][ T9328] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.918886][ T9328] ? do_syscall_64+0x26/0x790 [ 89.923538][ T9328] __x64_sys_sendmsg+0x78/0xb0 [ 89.928281][ T9328] do_syscall_64+0xfa/0x790 [ 89.932759][ T9328] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.938624][ T9328] RIP: 0033:0x440669 [ 89.942496][ T9328] 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 [ 89.962173][ T9328] RSP: 002b:00007ffde779c858 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 89.970565][ T9328] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440669 [ 89.978525][ T9328] RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000004 [ 89.986485][ T9328] RBP: 00000000006ca018 R08: 0000000000000048 R09: 00000000004002c8 [ 89.994437][ T9328] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000401ef0 [ 90.002388][ T9328] R13: 0000000000401f80 R14: 0000000000000000 R15: 0000000000000000 [ 90.010344][ T9328] Modules linked in: [ 90.014310][ T9328] ---[ end trace e8c4a3e1455d3dc0 ]--- [ 90.019771][ T9328] RIP: 0010:hash_net4_uadt+0x200/0x940 [ 90.025281][ T9328] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 92 06 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 57 [ 90.045014][ T9328] RSP: 0018:ffffc90002007190 EFLAGS: 00010246 [ 90.051118][ T9328] RAX: dffffc0000000000 RBX: ffffc90002007320 RCX: 0000000000000000 [ 90.059237][ T9328] RDX: 0000000000000000 RSI: ffffffff86801a0d RDI: ffff88809aba2048 [ 90.067221][ T9328] RBP: ffffc900020072b8 R08: 0000000000000000 R09: 0000000000000000 [ 90.075203][ T9328] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 90.083167][ T9328] R13: 0000000009000000 R14: ffff8880a485b000 R15: 0000000000000002 [ 90.091165][ T9328] FS: 0000000001f44880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 90.100116][ T9328] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.106706][ T9328] CR2: 0000000020000446 CR3: 00000000a8e94000 CR4: 00000000001406f0 [ 90.115038][ T9328] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 90.123001][ T9328] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 90.131023][ T9328] Kernel panic - not syncing: Fatal exception in interrupt [ 90.139930][ T9328] Kernel Offset: disabled [ 90.144289][ T9328] Rebooting in 86400 seconds..