[....] Starting enhanced syslogd: rsyslogd[ 17.439629] audit: type=1400 audit(1517929506.420:5): avc: denied { syslog } for pid=4023 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.669885] audit: type=1400 audit(1517929511.650:6): avc: denied { map } for pid=4162 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 '10.128.15.208' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program [ 28.971836] audit: type=1400 audit(1517929517.952:7): avc: denied { map } for pid=4176 comm="syzkaller094041" path="/root/syzkaller094041968" 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 [ 28.981428] ipt_CLUSTERIP: ipt_CLUSTERIP is deprecated and it will removed soon, use xt_cluster instead [ 29.001400] ipt_CLUSTERIP: ipt_CLUSTERIP is deprecated and it will removed soon, use xt_cluster instead executing program [ 29.018323] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.018922] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.025815] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.032040] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.045527] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.045763] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.053459] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.058956] x_tables: ip_tables: osf match: only valid for protocol 6 executing program executing program executing program executing program [ 29.067275] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.072927] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.078919] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.085387] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.099163] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.100628] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.107100] x_tables: ip_tables: osf match: only valid for protocol 6 executing program executing program executing program executing program executing program [ 29.113509] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.119204] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.125863] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.133495] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.140062] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.146189] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.152952] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.159206] x_tables: ip_tables: osf match: only valid for protocol 6 [ 29.172107] ------------[ cut here ]------------ [ 29.176959] proc_dir_entry 'ipt_CLUSTERIP/172.20.0.170' already registered [ 29.184047] WARNING: CPU: 0 PID: 4198 at fs/proc/generic.c:330 proc_register+0x2a4/0x370 [ 29.192246] Kernel panic - not syncing: panic_on_warn set ... [ 29.192246] [ 29.199581] CPU: 0 PID: 4198 Comm: syzkaller094041 Not tainted 4.15.0+ #299 [ 29.206649] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.215974] Call Trace: [ 29.218535] dump_stack+0x194/0x257 [ 29.222140] ? arch_local_irq_restore+0x53/0x53 [ 29.226787] ? vsnprintf+0x1ed/0x1900 [ 29.230566] panic+0x1e4/0x41c [ 29.233735] ? refcount_error_report+0x214/0x214 [ 29.238469] ? show_regs_print_info+0x18/0x18 [ 29.242944] ? __warn+0x1c1/0x200 [ 29.246375] ? proc_register+0x2a4/0x370 [ 29.250414] __warn+0x1dc/0x200 [ 29.253667] ? proc_register+0x2a4/0x370 [ 29.257707] report_bug+0x211/0x2d0 [ 29.261312] fixup_bug.part.11+0x37/0x80 [ 29.265347] do_error_trap+0x2d7/0x3e0 [ 29.269212] ? vprintk_default+0x28/0x30 [ 29.273252] ? math_error+0x400/0x400 [ 29.277030] ? printk+0xaa/0xca [ 29.280285] ? show_regs_print_info+0x18/0x18 [ 29.284763] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.289583] do_invalid_op+0x1b/0x20 [ 29.293271] invalid_op+0x22/0x40 [ 29.296700] RIP: 0010:proc_register+0x2a4/0x370 [ 29.301342] RSP: 0018:ffff8801d0956cd8 EFLAGS: 00010286 [ 29.306679] RAX: dffffc0000000008 RBX: ffff8801d21c9bb8 RCX: ffffffff815a585e [ 29.313919] RDX: 0000000000000000 RSI: 1ffff1003a12ad4b RDI: 1ffff1003a12ad20 [ 29.321160] RBP: ffff8801d0956d28 R08: 1ffff1003a12ace2 R09: 0000000000000000 [ 29.328402] R10: ffff8801d0956b90 R11: 0000000000000000 R12: ffff8801b859d580 [ 29.335644] R13: dffffc0000000000 R14: ffff8801ad456848 R15: ffff8801b859d641 [ 29.342897] ? vprintk_func+0x5e/0xc0 [ 29.346679] ? proc_register+0x2a4/0x370 [ 29.350723] proc_create_data+0xf8/0x180 [ 29.354766] clusterip_tg_check+0xf9c/0x16d0 [ 29.359158] ? arp_mangle+0x550/0x550 [ 29.362935] ? xt_find_target+0x150/0x1e0 [ 29.367060] ? lock_downgrade+0x980/0x980 [ 29.371188] ? rcu_read_lock_sched_held+0x108/0x120 [ 29.376181] ? pcpu_alloc+0x146/0x10e0 [ 29.380061] ? __mutex_unlock_slowpath+0xe9/0xac0 [ 29.384875] ? retint_kernel+0x10/0x10 [ 29.388737] ? wait_for_completion+0x770/0x770 [ 29.393299] ? arp_mangle+0x550/0x550 [ 29.397076] xt_check_target+0x22c/0x7d0 [ 29.401113] ? xt_target_seq_next+0x30/0x30 [ 29.405406] ? xt_find_target+0x44/0x1e0 [ 29.409446] ? strcmp+0x4f/0xb0 [ 29.412704] ? mutex_unlock+0xd/0x10 [ 29.416392] ? xt_find_target+0x17b/0x1e0 [ 29.420527] find_check_entry.isra.8+0x8c8/0xcb0 [ 29.425268] ? ipt_do_table+0x1950/0x1950 [ 29.429396] ? trace_hardirqs_off+0xd/0x10 [ 29.433604] ? quarantine_put+0xeb/0x190 [ 29.437644] ? kfree+0xf0/0x260 [ 29.440911] ? trace_hardirqs_on+0xd/0x10 [ 29.445044] translate_table+0xed1/0x1610 [ 29.449188] ? alloc_counters.isra.11+0x7d0/0x7d0 [ 29.454008] ? kasan_check_write+0x14/0x20 [ 29.458221] ? _copy_from_user+0x99/0x110 [ 29.462348] do_ipt_set_ctl+0x370/0x5f0 [ 29.466297] ? print_irqtrace_events+0x270/0x270 [ 29.471031] ? translate_compat_table+0x1b90/0x1b90 [ 29.476040] ? mutex_unlock+0xd/0x10 [ 29.479730] ? nf_sockopt_find.constprop.0+0x1a7/0x220 [ 29.484984] nf_setsockopt+0x67/0xc0 [ 29.488678] ip_setsockopt+0x97/0xa0 [ 29.492370] sctp_setsockopt+0x2b6/0x61d0 [ 29.496496] ? sctp_setsockopt_paddr_thresholds+0x550/0x550 [ 29.502187] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 29.507361] ? mem_cgroup_charge_statistics+0x9d0/0x9d0 [ 29.512698] ? __lock_is_held+0xb6/0x140 [ 29.516739] ? __lru_cache_add+0x2a6/0x410 [ 29.520950] ? __pagevec_lru_add+0x30/0x30 [ 29.525163] ? get_mem_cgroup_from_mm+0x49b/0x710 [ 29.529988] ? __lock_is_held+0xb6/0x140 [ 29.534034] ? check_noncircular+0x20/0x20 [ 29.538252] ? check_noncircular+0x20/0x20 [ 29.542461] ? check_noncircular+0x20/0x20 [ 29.546677] ? mark_held_locks+0xaf/0x100 [ 29.550803] ? find_held_lock+0x35/0x1d0 [ 29.554850] ? avc_has_perm+0x35e/0x680 [ 29.558797] ? lock_downgrade+0x980/0x980 [ 29.562923] ? lock_release+0xa40/0xa40 [ 29.566867] ? lock_downgrade+0x980/0x980 [ 29.570993] ? lock_release+0xa40/0xa40 [ 29.574945] ? __lock_is_held+0xb6/0x140 [ 29.578986] ? avc_has_perm+0x43e/0x680 [ 29.582940] ? avc_has_perm_noaudit+0x520/0x520 [ 29.587604] ? iterate_fd+0x3f0/0x3f0 [ 29.591379] ? lock_downgrade+0x980/0x980 [ 29.595500] ? check_noncircular+0x20/0x20 [ 29.599710] ? find_held_lock+0x35/0x1d0 [ 29.603756] ? handle_mm_fault+0x2a0/0x930 [ 29.607973] ? sock_has_perm+0x2a4/0x420 [ 29.612027] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 29.617372] ? selinux_netlbl_socket_setsockopt+0x10c/0x460 [ 29.623057] ? selinux_netlbl_sock_rcv_skb+0x730/0x730 [ 29.628316] ? handle_mm_fault+0x476/0x930 [ 29.632538] sock_common_setsockopt+0x95/0xd0 [ 29.637017] SyS_setsockopt+0x189/0x360 [ 29.640971] ? SyS_recv+0x40/0x40 [ 29.644403] ? mm_fault_error+0x2c0/0x2c0 [ 29.648534] ? move_addr_to_kernel+0x60/0x60 [ 29.652920] ? do_syscall_64+0xb7/0x940 [ 29.656871] ? SyS_recv+0x40/0x40 [ 29.660301] do_syscall_64+0x282/0x940 [ 29.664160] ? __do_page_fault+0xc90/0xc90 [ 29.668369] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 29.673360] ? syscall_return_slowpath+0x550/0x550 [ 29.678263] ? syscall_return_slowpath+0x2ac/0x550 [ 29.683166] ? prepare_exit_to_usermode+0x350/0x350 [ 29.688158] ? retint_user+0x18/0x18 [ 29.691853] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.696675] entry_SYSCALL_64_after_hwframe+0x26/0x9b [ 29.701834] RIP: 0033:0x446839 [ 29.705000] RSP: 002b:00007f2fd1382db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 29.712686] RAX: ffffffffffffffda RBX: 00000000006dbc3c RCX: 0000000000446839 [ 29.719928] RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000005 [ 29.727169] RBP: 00000000006dbc38 R08: 0000000000000348 R09: 0000000000000000 [ 29.734414] R10: 0000000020013c90 R11: 0000000000000246 R12: 0000000000000000 [ 29.741658] R13: 00007fff6b169aaf R14: 00007f2fd13839c0 R15: 0000000000000003 [ 29.749479] Dumping ftrace buffer: [ 29.753082] (ftrace buffer empty) [ 29.756764] Kernel Offset: disabled [ 29.760361] Rebooting in 86400 seconds..