[....] Starting enhanced syslogd: rsyslogd[ 16.994467] audit: type=1400 audit(1518210910.759:5): avc: denied { syslog } for pid=4016 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.398445] audit: type=1400 audit(1518210913.163:6): avc: denied { map } for pid=4157 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.5' (ECDSA) to the list of known hosts. net.ipv6.conf.syz7.accept_dad = 0 [ 25.746740] audit: type=1400 audit(1518210919.511:7): avc: denied { map } for pid=4171 comm="syzkaller762652" path="/root/syzkaller762652649" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 net.ipv6.conf.syz2.accept_dad = 0 net.ipv6.conf.syz4.accept_dad = 0 net.ipv6.conf.syz3.accept_dad = 0 net.ipv6.conf.syz6.accept_dad = 0 net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz5.accept_dad = 0 net.ipv6.conf.syz1.accept_dad = 0 net.ipv6.conf.syz7.router_solicitations = 0 net.ipv6.conf.syz2.router_solicitations = 0 net.ipv6.conf.syz6.router_solicitations = 0 net.ipv6.conf.syz3.router_solicitations = 0 net.ipv6.conf.syz4.router_solicitations = 0 net.ipv6.conf.syz0.router_solicitations = 0 net.ipv6.conf.syz5.router_solicitations = 0 net.ipv6.conf.syz1.router_solicitations = 0 RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: File exists RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported [ 27.656390] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: No buffer space available RTNETLINK answers: No buffer space available RTNETLINK answers: No buffer space available RTNETLINK answers: No buffer space available RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument executing program executing program executing program executing program executing program executing program executing program [ 29.758589] ipt_CLUSTERIP: ipt_CLUSTERIP is deprecated and it will removed soon, use xt_cluster instead [ 29.760136] ipt_CLUSTERIP: ipt_CLUSTERIP is deprecated and it will removed soon, use xt_cluster instead [ 29.778744] ipt_CLUSTERIP: no config found for 172.20.0.170, need 'new' [ 29.791366] ipt_CLUSTERIP: no config found for 172.20.0.170, need 'new' [ 29.794184] ipt_CLUSTERIP: no config found for 172.20.0.170, need 'new' executing program executing program executing program [ 29.804730] ipt_CLUSTERIP: no config found for 172.20.0.170, need 'new' [ 29.809223] ipt_CLUSTERIP: no config found for 172.20.0.170, need 'new' [ 29.813060] ipt_CLUSTERIP: no config found for 172.20.0.170, need 'new' [ 29.823081] ipt_CLUSTERIP: no config found for 172.20.0.170, need 'new' [ 29.831473] ipt_CLUSTERIP: no config found for 172.20.0.170, need 'new' [ 29.832347] ipt_CLUSTERIP: no config found for 172.20.0.170, need 'new' [ 29.842865] ipt_CLUSTERIP: no config found for 172.20.0.170, need 'new' [ 29.847411] ipt_CLUSTERIP: no config found for 172.20.0.170, need 'new' executing program executing program executing program executing program executing program executing program [ 29.855723] ipt_CLUSTERIP: no config found for 172.20.0.170, need 'new' [ 29.861377] ipt_CLUSTERIP: no config found for 172.20.0.170, need 'new' [ 29.866424] ipt_CLUSTERIP: no config found for 172.20.0.170, need 'new' [ 29.875133] ipt_CLUSTERIP: no config found for 172.20.0.170, need 'new' [ 29.891669] ------------[ cut here ]------------ [ 29.896644] proc_dir_entry 'ipt_CLUSTERIP/255.255.255.255' already registered [ 29.904037] WARNING: CPU: 0 PID: 5291 at fs/proc/generic.c:330 proc_register+0x2a4/0x370 [ 29.912249] Kernel panic - not syncing: panic_on_warn set ... [ 29.912249] [ 29.919590] CPU: 0 PID: 5291 Comm: syzkaller762652 Not tainted 4.15.0+ #221 [ 29.926658] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.935985] Call Trace: [ 29.938551] dump_stack+0x194/0x257 [ 29.942157] ? arch_local_irq_restore+0x53/0x53 [ 29.946803] ? vsnprintf+0x1ed/0x1900 [ 29.950586] panic+0x1e4/0x41c [ 29.953753] ? refcount_error_report+0x214/0x214 [ 29.958482] ? show_regs_print_info+0x18/0x18 [ 29.962958] ? __warn+0x1c1/0x200 [ 29.966391] ? proc_register+0x2a4/0x370 [ 29.970425] __warn+0x1dc/0x200 [ 29.973679] ? proc_register+0x2a4/0x370 [ 29.977718] report_bug+0x211/0x2d0 [ 29.981327] fixup_bug.part.11+0x37/0x80 [ 29.985376] do_error_trap+0x2d7/0x3e0 [ 29.989239] ? vprintk_default+0x28/0x30 [ 29.993279] ? math_error+0x400/0x400 [ 29.997053] ? printk+0xaa/0xca [ 30.000308] ? show_regs_print_info+0x18/0x18 [ 30.004788] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.009609] do_invalid_op+0x1b/0x20 [ 30.013296] invalid_op+0x22/0x40 [ 30.016724] RIP: 0010:proc_register+0x2a4/0x370 [ 30.021364] RSP: 0018:ffff8801cd657528 EFLAGS: 00010286 [ 30.026702] RAX: dffffc0000000008 RBX: ffff8801d21963f8 RCX: ffffffff815a57ae [ 30.033946] RDX: 0000000000000000 RSI: 1ffff10039acae55 RDI: 1ffff10039acae2a [ 30.041197] RBP: ffff8801cd657578 R08: 1ffff10039acadec R09: 0000000000000000 [ 30.048438] R10: ffff8801cd6573e0 R11: 0000000000000000 R12: ffff8801d0057580 [ 30.055681] R13: dffffc0000000000 R14: ffff8801b5730308 R15: ffff8801d0057641 [ 30.062939] ? vprintk_func+0x5e/0xc0 [ 30.066723] ? proc_register+0x2a4/0x370 [ 30.070771] proc_create_data+0xf8/0x180 [ 30.074814] clusterip_tg_check+0xf9c/0x16d0 [ 30.079211] ? arp_mangle+0x550/0x550 [ 30.082990] ? xt_find_target+0x150/0x1e0 [ 30.087115] ? lock_downgrade+0x980/0x980 [ 30.091238] ? rcu_read_lock_sched_held+0x108/0x120 [ 30.096231] ? pcpu_alloc+0x146/0x10e0 [ 30.100107] ? pcpu_free_area+0xa00/0xa00 [ 30.104236] ? __mutex_unlock_slowpath+0xe9/0xac0 [ 30.109052] ? kernel_text_address+0x102/0x140 [ 30.113610] ? wait_for_completion+0x770/0x770 [ 30.118166] ? unwind_get_return_address+0x61/0xa0 [ 30.123071] ? __save_stack_trace+0x7e/0xd0 [ 30.127369] ? arp_mangle+0x550/0x550 [ 30.131148] xt_check_target+0x22c/0x7d0 [ 30.135190] ? xt_target_seq_next+0x30/0x30 [ 30.139488] ? save_stack+0xa3/0xd0 [ 30.143090] ? save_stack+0x43/0xd0 [ 30.146688] ? kasan_slab_free+0x71/0xc0 [ 30.150723] ? kfree+0xd6/0x260 [ 30.153976] ? kvfree+0x36/0x60 [ 30.157235] ? mutex_unlock+0xd/0x10 [ 30.160922] ? xt_find_target+0x17b/0x1e0 [ 30.165057] find_check_entry.isra.8+0x8c8/0xcb0 [ 30.169798] ? ipt_do_table+0x1950/0x1950 [ 30.173933] ? trace_hardirqs_off+0xd/0x10 [ 30.178141] ? quarantine_put+0xeb/0x190 [ 30.182177] ? kfree+0xf0/0x260 [ 30.185435] ? trace_hardirqs_on+0xd/0x10 [ 30.189562] translate_table+0xed1/0x1610 [ 30.193705] ? alloc_counters.isra.11+0x7d0/0x7d0 [ 30.198524] ? kasan_check_write+0x14/0x20 [ 30.202732] ? _copy_from_user+0x99/0x110 [ 30.206858] do_ipt_set_ctl+0x370/0x5f0 [ 30.210813] ? translate_compat_table+0x1b90/0x1b90 [ 30.215825] ? mutex_unlock+0xd/0x10 [ 30.219512] ? nf_sockopt_find.constprop.0+0x1a7/0x220 [ 30.224765] nf_setsockopt+0x67/0xc0 [ 30.228456] ip_setsockopt+0x97/0xa0 [ 30.232235] raw_setsockopt+0xb7/0xd0 [ 30.236040] sock_common_setsockopt+0x95/0xd0 [ 30.240516] SyS_setsockopt+0x189/0x360 [ 30.244470] ? SyS_recv+0x40/0x40 [ 30.247901] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 30.252723] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 30.257716] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.262455] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 30.267184] RIP: 0033:0x44b669 [ 30.270349] RSP: 002b:00007f7930633d48 EFLAGS: 00000202 ORIG_RAX: 0000000000000036 [ 30.278033] RAX: ffffffffffffffda RBX: 00007f7930634700 RCX: 000000000044b669 [ 30.285279] RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000007 [ 30.292528] RBP: 00007ffe839eadc0 R08: 0000000000000368 R09: 0000000000000000 [ 30.299776] R10: 00000000204a0c98 R11: 0000000000000202 R12: 0000000000000000 [ 30.307025] R13: 00007ffe839ead1f R14: 00007f79306349c0 R15: 0000000000000004 [ 30.315047] Dumping ftrace buffer: [ 30.318676] (ftrace buffer empty) [ 30.322376] Kernel Offset: disabled [ 30.325981] Rebooting in 86400 seconds..