[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 68.881342][ T27] audit: type=1800 audit(1578701095.688:25): pid=9617 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 68.911132][ T27] audit: type=1800 audit(1578701095.688:26): pid=9617 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 68.952165][ T27] audit: type=1800 audit(1578701095.688:27): pid=9617 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 '10.128.0.190' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 80.273720][ T9770] general protection fault, probably for non-canonical address 0xdffffc0000000275: 0000 [#1] PREEMPT SMP KASAN [ 80.285555][ T9770] KASAN: probably user-memory-access in range [0x00000000000013a8-0x00000000000013af] [ 80.295118][ T9770] CPU: 0 PID: 9770 Comm: syz-executor499 Not tainted 5.5.0-rc5-next-20200110-syzkaller #0 [ 80.304978][ T9770] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.315026][ T9770] RIP: 0010:xt_rateest_put+0xa1/0x440 [ 80.320376][ T9770] Code: 35 79 f1 fa 45 84 f6 0f 84 68 02 00 00 e8 e7 77 f1 fa 49 8d bd a8 13 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 6c 03 00 00 4d 8b b5 a8 13 00 00 e8 69 97 dd fa [ 80.339966][ T9770] RSP: 0018:ffffc90001ae7940 EFLAGS: 00010202 [ 80.346011][ T9770] RAX: dffffc0000000000 RBX: ffff8880a5283c00 RCX: ffffffff8683a9d2 [ 80.353962][ T9770] RDX: 0000000000000275 RSI: ffffffff8683a759 RDI: 00000000000013a8 [ 80.361913][ T9770] RBP: ffffc90001ae7970 R08: ffff888098f8a2c0 R09: ffffed1015d07074 [ 80.369870][ T9770] R10: ffffed1015d07073 R11: ffff8880ae83839b R12: 000000000000002d [ 80.377825][ T9770] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8683ab10 [ 80.385782][ T9770] FS: 0000000002636880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 80.394688][ T9770] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.401250][ T9770] CR2: 00000000200008e0 CR3: 00000000982d1000 CR4: 00000000001406f0 [ 80.409254][ T9770] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.417225][ T9770] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.425231][ T9770] Call Trace: [ 80.428528][ T9770] ? xt_rateest_put+0x440/0x440 [ 80.433371][ T9770] xt_rateest_tg_destroy+0x72/0xa0 [ 80.438467][ T9770] ? xt_percpu_counter_free+0x8f/0xd0 [ 80.443838][ T9770] translate_table+0x11f4/0x1d80 [ 80.448765][ T9770] ? arpt_alloc_initial_table+0x690/0x690 [ 80.454474][ T9770] ? lock_downgrade+0x920/0x920 [ 80.459320][ T9770] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 80.465544][ T9770] ? _copy_from_user+0x12c/0x1a0 [ 80.470478][ T9770] do_arpt_set_ctl+0x317/0x650 [ 80.475236][ T9770] ? __do_replace+0xa80/0xa80 [ 80.479904][ T9770] ? __mutex_unlock_slowpath+0xf0/0x6a0 [ 80.485445][ T9770] ? ___might_sleep+0x163/0x2c0 [ 80.490277][ T9770] ? wait_for_completion+0x440/0x440 [ 80.495549][ T9770] ? mutex_unlock+0xd/0x10 [ 80.499961][ T9770] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 80.505918][ T9770] nf_setsockopt+0x77/0xd0 [ 80.510326][ T9770] ip_setsockopt+0xdf/0x100 [ 80.514899][ T9770] udp_setsockopt+0x68/0xb0 [ 80.519382][ T9770] sock_common_setsockopt+0x94/0xd0 [ 80.524557][ T9770] __sys_setsockopt+0x261/0x4c0 [ 80.529388][ T9770] ? sock_create_kern+0x50/0x50 [ 80.534213][ T9770] ? up_read+0x1cd/0x810 [ 80.538436][ T9770] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 80.543871][ T9770] ? do_syscall_64+0x26/0x790 [ 80.548525][ T9770] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 80.555102][ T9770] ? do_syscall_64+0x26/0x790 [ 80.559760][ T9770] __x64_sys_setsockopt+0xbe/0x150 [ 80.564850][ T9770] do_syscall_64+0xfa/0x790 [ 80.569338][ T9770] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 80.575217][ T9770] RIP: 0033:0x441699 [ 80.579090][ T9770] 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 [ 80.598670][ T9770] RSP: 002b:00007ffef7227b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 80.607057][ T9770] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441699 [ 80.615019][ T9770] RDX: 0000000000000060 RSI: 0a02000000000000 RDI: 0000000000000003 [ 80.622972][ T9770] RBP: 00000000006cb018 R08: 0000000000000430 R09: 00000000004002c8 [ 80.630931][ T9770] R10: 00000000200008c0 R11: 0000000000000246 R12: 0000000000402f20 [ 80.638891][ T9770] R13: 0000000000402fb0 R14: 0000000000000000 R15: 0000000000000000 [ 80.646847][ T9770] Modules linked in: [ 80.650862][ T9770] ---[ end trace 57cd30d2e710df45 ]--- [ 80.656380][ T9770] RIP: 0010:xt_rateest_put+0xa1/0x440 [ 80.661771][ T9770] Code: 35 79 f1 fa 45 84 f6 0f 84 68 02 00 00 e8 e7 77 f1 fa 49 8d bd a8 13 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 6c 03 00 00 4d 8b b5 a8 13 00 00 e8 69 97 dd fa [ 80.681428][ T9770] RSP: 0018:ffffc90001ae7940 EFLAGS: 00010202 [ 80.687487][ T9770] RAX: dffffc0000000000 RBX: ffff8880a5283c00 RCX: ffffffff8683a9d2 [ 80.695468][ T9770] RDX: 0000000000000275 RSI: ffffffff8683a759 RDI: 00000000000013a8 [ 80.703562][ T9770] RBP: ffffc90001ae7970 R08: ffff888098f8a2c0 R09: ffffed1015d07074 [ 80.711549][ T9770] R10: ffffed1015d07073 R11: ffff8880ae83839b R12: 000000000000002d [ 80.719509][ T9770] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8683ab10 [ 80.727495][ T9770] FS: 0000000002636880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 80.736430][ T9770] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.743020][ T9770] CR2: 00000000200008e0 CR3: 00000000982d1000 CR4: 00000000001406f0 [ 80.750979][ T9770] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.758957][ T9770] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.766933][ T9770] Kernel panic - not syncing: Fatal exception [ 80.774465][ T9770] Kernel Offset: disabled [ 80.778787][ T9770] Rebooting in 86400 seconds..