[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 65.197056][ T26] audit: type=1800 audit(1561405690.532:25): pid=8991 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 65.239637][ T26] audit: type=1800 audit(1561405690.532:26): pid=8991 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 65.281831][ T26] audit: type=1800 audit(1561405690.532:27): pid=8991 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 '10.128.0.182' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 74.847725][ T9145] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 74.915818][ T9147] IPVS: ftp: loaded support on port[0] = 21 executing program [ 74.981157][ T9149] IPVS: ftp: loaded support on port[0] = 21 [ 75.037774][ T9151] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.105884][ T9153] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 75.177966][ T9155] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.236301][ T9157] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.297110][ T9159] IPVS: ftp: loaded support on port[0] = 21 [ 75.356899][ T9161] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.435797][ T9163] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.566362][ T9166] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.660875][ T9168] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.779915][ T9170] IPVS: ftp: loaded support on port[0] = 21 executing program [ 75.950756][ T9172] IPVS: ftp: loaded support on port[0] = 21 executing program [ 76.049915][ T9174] IPVS: ftp: loaded support on port[0] = 21 executing program [ 76.171711][ T9176] IPVS: ftp: loaded support on port[0] = 21 executing program [ 76.305739][ T9178] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 76.405237][ T9180] IPVS: ftp: loaded support on port[0] = 21 [ 76.469874][ T9182] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 76.545965][ T9184] IPVS: ftp: loaded support on port[0] = 21 [ 76.605884][ T9186] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 76.675452][ T9188] IPVS: ftp: loaded support on port[0] = 21 [ 76.735195][ T9190] IPVS: ftp: loaded support on port[0] = 21 executing program [ 76.816044][ T9192] IPVS: ftp: loaded support on port[0] = 21 executing program [ 76.896055][ T9194] IPVS: ftp: loaded support on port[0] = 21 executing program [ 77.014126][ T9196] IPVS: ftp: loaded support on port[0] = 21 executing program [ 77.110679][ T9198] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 77.224347][ T9200] IPVS: ftp: loaded support on port[0] = 21 [ 77.292487][ T9202] IPVS: ftp: loaded support on port[0] = 21 executing program [ 77.391713][ T9204] IPVS: ftp: loaded support on port[0] = 21 executing program [ 77.476231][ T9206] IPVS: ftp: loaded support on port[0] = 21 executing program [ 77.560956][ T9208] IPVS: ftp: loaded support on port[0] = 21 executing program [ 77.657340][ T9210] IPVS: ftp: loaded support on port[0] = 21 executing program [ 77.736122][ T9227] IPVS: ftp: loaded support on port[0] = 21 [ 78.129656][ T9227] kasan: CONFIG_KASAN_INLINE enabled [ 78.135111][ T9227] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 78.143231][ T9227] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 78.150168][ T9227] CPU: 0 PID: 9227 Comm: syz-executor138 Not tainted 5.2.0-rc5-next-20190621 #20 [ 78.159252][ T9227] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.169298][ T9227] RIP: 0010:ovs_ct_exit+0x1ac/0x4ec [ 78.174491][ T9227] Code: 01 00 00 00 48 c7 c7 c0 3e da 88 e8 3e 4b 38 fa 49 8d 44 24 50 48 89 c2 48 89 45 d0 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 ee 02 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b [ 78.194188][ T9227] RSP: 0018:ffff8880843efb10 EFLAGS: 00010206 [ 78.200239][ T9227] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff110130a9558 [ 78.208191][ T9227] RDX: 000000000000000a RSI: 1ffff110130a955f RDI: 0000000000000286 [ 78.216163][ T9227] RBP: ffff8880843efb50 R08: ffff88809854a240 R09: 0000000000000002 [ 78.224121][ T9227] R10: fffffbfff13429ff R11: ffffffff89a14fff R12: 0000000000000000 [ 78.232080][ T9227] R13: ffff888097e3c400 R14: ffff888098fa6480 R15: dffffc0000000000 [ 78.240040][ T9227] FS: 00007f0c629f2700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 78.248964][ T9227] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.255617][ T9227] CR2: 00000000004cc870 CR3: 00000000a48e4000 CR4: 00000000001406f0 [ 78.263754][ T9227] Call Trace: [ 78.267048][ T9227] ? kasan_check_read+0x11/0x20 [ 78.271906][ T9227] ovs_exit_net+0x1f8/0xc30 [ 78.276401][ T9227] ? synchronize_rcu.part.0+0xcf/0xe0 [ 78.281864][ T9227] ? kfree_call_rcu+0x10/0x10 [ 78.286522][ T9227] ? ovs_dp_cmd_del+0x270/0x270 [ 78.291353][ T9227] ? ovs_dp_cmd_del+0x270/0x270 [ 78.296185][ T9227] ops_exit_list.isra.0+0xaa/0x150 [ 78.301302][ T9227] setup_net+0x518/0x870 [ 78.305528][ T9227] ? ops_init+0x410/0x410 [ 78.309868][ T9227] ? kasan_check_write+0x14/0x20 [ 78.314811][ T9227] ? down_read_killable+0x51/0x220 [ 78.319929][ T9227] copy_net_ns+0x1df/0x340 [ 78.324363][ T9227] create_new_namespaces+0x400/0x7b0 [ 78.329654][ T9227] unshare_nsproxy_namespaces+0xc2/0x200 [ 78.335279][ T9227] ksys_unshare+0x444/0x980 [ 78.339783][ T9227] ? walk_process_tree+0x2c0/0x2c0 [ 78.344882][ T9227] ? up_read+0xc4/0x200 [ 78.349108][ T9227] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 78.354550][ T9227] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.360621][ T9227] ? do_syscall_64+0x26/0x6a0 [ 78.365291][ T9227] ? lockdep_hardirqs_on+0x418/0x5d0 [ 78.370597][ T9227] __x64_sys_unshare+0x31/0x40 [ 78.375359][ T9227] do_syscall_64+0xfd/0x6a0 [ 78.379881][ T9227] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.385761][ T9227] RIP: 0033:0x4465f9 [ 78.389660][ T9227] Code: e8 5c b3 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 78.409270][ T9227] RSP: 002b:00007f0c629f1db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 [ 78.417688][ T9227] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004465f9 [ 78.425654][ T9227] RDX: 0000000000402634 RSI: b2e140e2e0010c85 RDI: 000000006c060000 [ 78.433741][ T9227] RBP: 00000000006dbc20 R08: 00007f0c629f2700 R09: 0000000000000000 [ 78.441702][ T9227] R10: 00007f0c629f2700 R11: 0000000000000246 R12: 00000000006dbc2c [ 78.449656][ T9227] R13: 00007ffeec63f81f R14: 00007f0c629f29c0 R15: 0000000000000000 [ 78.457634][ T9227] Modules linked in: [ 78.462160][ T9227] ---[ end trace 81f4c9d42533a912 ]--- [ 78.467655][ T9227] RIP: 0010:ovs_ct_exit+0x1ac/0x4ec [ 78.472915][ T9227] Code: 01 00 00 00 48 c7 c7 c0 3e da 88 e8 3e 4b 38 fa 49 8d 44 24 50 48 89 c2 48 89 45 d0 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 ee 02 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b [ 78.499336][ T9227] RSP: 0018:ffff8880843efb10 EFLAGS: 00010206 [ 78.505452][ T9227] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff110130a9558 [ 78.513478][ T9227] RDX: 000000000000000a RSI: 1ffff110130a955f RDI: 0000000000000286 [ 78.521570][ T9227] RBP: ffff8880843efb50 R08: ffff88809854a240 R09: 0000000000000002 [ 78.529598][ T9227] R10: fffffbfff13429ff R11: ffffffff89a14fff R12: 0000000000000000 [ 78.537660][ T9227] R13: ffff888097e3c400 R14: ffff888098fa6480 R15: dffffc0000000000 [ 78.545687][ T9227] FS: 00007f0c629f2700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 78.554695][ T9227] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.561346][ T9227] CR2: 00000000004cc870 CR3: 00000000a48e4000 CR4: 00000000001406f0 [ 78.569332][ T9227] Kernel panic - not syncing: Fatal exception [ 78.576428][ T9227] Kernel Offset: disabled [ 78.580863][ T9227] Rebooting in 86400 seconds..