[....] Starting enhanced syslogd: rsyslogd[ 15.821299] audit: type=1400 audit(1518223765.456:5): avc: denied { syslog } for pid=4006 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 18.060948] audit: type=1400 audit(1518223767.695:6): avc: denied { map } for pid=4144 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 '10.128.15.200' (ECDSA) to the list of known hosts. executing program [ 27.785064] audit: type=1400 audit(1518223777.419:7): avc: denied { map } for pid=4159 comm="syzkaller598581" path="/root/syzkaller598581546" 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 [ 27.788254] ------------[ cut here ]------------ [ 27.815999] name len 0 [ 27.818609] WARNING: CPU: 0 PID: 4159 at fs/proc/generic.c:354 __proc_create+0x696/0x880 [ 27.826811] Kernel panic - not syncing: panic_on_warn set ... [ 27.826811] [ 27.834145] CPU: 0 PID: 4159 Comm: syzkaller598581 Not tainted 4.15.0+ #221 [ 27.841213] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.850536] Call Trace: [ 27.853101] dump_stack+0x194/0x257 [ 27.856703] ? arch_local_irq_restore+0x53/0x53 [ 27.861350] ? vsnprintf+0x1ed/0x1900 [ 27.865126] panic+0x1e4/0x41c [ 27.868291] ? refcount_error_report+0x214/0x214 [ 27.873022] ? show_regs_print_info+0x18/0x18 [ 27.877492] ? console_trylock+0x4d/0x70 [ 27.881529] ? __warn+0x1c1/0x200 [ 27.884960] ? __proc_create+0x696/0x880 [ 27.888998] __warn+0x1dc/0x200 [ 27.892253] ? __proc_create+0x696/0x880 [ 27.896288] report_bug+0x211/0x2d0 [ 27.899897] fixup_bug.part.11+0x37/0x80 [ 27.903931] do_error_trap+0x2d7/0x3e0 [ 27.907791] ? vprintk_default+0x28/0x30 [ 27.911826] ? math_error+0x400/0x400 [ 27.915602] ? printk+0xaa/0xca [ 27.918852] ? show_regs_print_info+0x18/0x18 [ 27.923329] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.928148] do_invalid_op+0x1b/0x20 [ 27.931833] invalid_op+0x22/0x40 [ 27.935262] RIP: 0010:__proc_create+0x696/0x880 [ 27.939899] RSP: 0018:ffff8801d3167418 EFLAGS: 00010282 [ 27.945234] RAX: dffffc0000000008 RBX: 1ffff1003a62ce88 RCX: ffffffff815a57ae [ 27.952475] RDX: 0000000000000000 RSI: 1ffff1003a62ce33 RDI: 1ffff1003a62ce08 [ 27.959719] RBP: ffff8801d3167588 R08: 1ffff1003a62cdca R09: 0000000000000000 [ 27.966960] R10: ffff8801d31672d0 R11: 0000000000000000 R12: ffff8801b1ee9a70 [ 27.974205] R13: ffff8801d3167560 R14: 0000000000000000 R15: ffff8801d3167520 [ 27.981463] ? vprintk_func+0x5e/0xc0 [ 27.985244] ? __proc_create+0x696/0x880 [ 27.989282] ? proc_register+0x370/0x370 [ 27.993323] ? __lock_is_held+0xb6/0x140 [ 27.997368] ? mark_held_locks+0xaf/0x100 [ 28.001492] ? __raw_spin_lock_init+0x1c/0x100 [ 28.006048] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 28.011053] proc_create_data+0x76/0x180 [ 28.015102] hashlimit_mt_check_common.isra.9+0xaee/0x1420 [ 28.020704] ? hashlimit_mt_destroy_v1+0x70/0x70 [ 28.025434] ? xt_find_match+0x150/0x1e0 [ 28.029469] ? lock_downgrade+0x980/0x980 [ 28.033587] ? hashlimit_mt_check_common.isra.9+0xde0/0x1420 [ 28.039362] ? hashlimit_mt_destroy_v1+0x70/0x70 [ 28.044100] ? __mutex_unlock_slowpath+0xe9/0xac0 [ 28.048916] ? pcpu_free_area+0xa00/0xa00 [ 28.053041] hashlimit_mt_check_v1+0x48d/0x640 [ 28.057595] ? hashlimit_mt_check_v2+0x640/0x640 [ 28.062331] ? module_unload_free+0x5b0/0x5b0 [ 28.066797] ? hashlimit_mt_check_v2+0x640/0x640 [ 28.071526] xt_check_match+0x231/0x7d0 [ 28.075473] ? xt_check_target+0x7d0/0x7d0 [ 28.079683] ? mutex_unlock+0xd/0x10 [ 28.083377] ? mutex_unlock+0xd/0x10 [ 28.087064] ? xt_find_match+0x17b/0x1e0 [ 28.091111] find_check_entry.isra.7+0x42d/0xcf0 [ 28.095850] ? do_add_counters+0x560/0x560 [ 28.100063] ? trace_hardirqs_off+0xd/0x10 [ 28.104281] ? quarantine_put+0xeb/0x190 [ 28.108315] ? kfree+0xf0/0x260 [ 28.111570] ? trace_hardirqs_on+0xd/0x10 [ 28.115696] translate_table+0xf52/0x1690 [ 28.119832] ? alloc_counters.isra.10+0x7e0/0x7e0 [ 28.124650] ? kasan_check_write+0x14/0x20 [ 28.128861] ? _copy_from_user+0x99/0x110 [ 28.132985] do_ip6t_set_ctl+0x370/0x5f0 [ 28.137029] ? handle_mm_fault+0x476/0x930 [ 28.141240] ? translate_compat_table+0x1c50/0x1c50 [ 28.146226] ? vmacache_find+0x5f/0x280 [ 28.150184] ? mutex_unlock+0xd/0x10 [ 28.153880] ? nf_sockopt_find.constprop.0+0x1a7/0x220 [ 28.159133] nf_setsockopt+0x67/0xc0 [ 28.162822] ipv6_setsockopt+0x10b/0x130 [ 28.166857] rawv6_setsockopt+0x4a/0xf0 [ 28.170810] sock_common_setsockopt+0x95/0xd0 [ 28.175281] SyS_setsockopt+0x189/0x360 [ 28.179233] ? SyS_recv+0x40/0x40 [ 28.182661] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 28.187477] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 28.192469] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 28.197203] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 28.201928] RIP: 0033:0x441319 [ 28.205089] RSP: 002b:00007ffde3898248 EFLAGS: 00000203 ORIG_RAX: 0000000000000036 [ 28.212769] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 0000000000441319 [ 28.220016] RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 [ 28.227270] RBP: 00000000006cb018 R08: 00000000000005c8 R09: 0000000000000000 [ 28.234514] R10: 0000000020ee3a38 R11: 0000000000000203 R12: 0000000000402c40 [ 28.241757] R13: 0000000000402cd0 R14: 0000000000000000 R15: 0000000000000000 [ 28.249553] Dumping ftrace buffer: [ 28.253152] (ftrace buffer empty) [ 28.256836] Kernel Offset: disabled [ 28.260439] Rebooting in 86400 seconds..