[....] Starting enhanced syslogd: rsyslogd[ 12.381288] audit: type=1400 audit(1517080012.542:5): avc: denied { syslog } for pid=3524 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: [ 19.219751] audit: type=1400 audit(1517080019.380:6): avc: denied { map } for pid=3663 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 '10.128.0.52' (ECDSA) to the list of known hosts. [ 40.895091] audit: type=1400 audit(1517080041.055:7): avc: denied { map } for pid=3680 comm="syzkaller464755" path="/root/syzkaller464755718" 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 [ 40.896928] ------------[ cut here ]------------ [ 40.896934] name len 0 [ 40.897008] WARNING: CPU: 0 PID: 3680 at fs/proc/generic.c:354 __proc_create+0x696/0x880 [ 40.897011] Kernel panic - not syncing: panic_on_warn set ... [ 40.897011] [ 40.897017] CPU: 0 PID: 3680 Comm: syzkaller464755 Not tainted 4.15.0-rc9+ #283 [ 40.897019] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.897021] Call Trace: [ 40.897029] dump_stack+0x194/0x257 [ 40.897038] ? arch_local_irq_restore+0x53/0x53 [ 40.897047] ? vsnprintf+0x1ed/0x1900 [ 40.897058] panic+0x1e4/0x41c [ 40.897063] ? refcount_error_report+0x214/0x214 [ 40.897069] ? show_regs_print_info+0x18/0x18 [ 40.897080] ? __warn+0x1c1/0x200 [ 40.897088] ? __proc_create+0x696/0x880 [ 40.897092] __warn+0x1dc/0x200 [ 40.897097] ? __proc_create+0x696/0x880 [ 40.897104] report_bug+0x211/0x2d0 [ 40.897116] fixup_bug.part.11+0x37/0x80 [ 40.897123] do_error_trap+0x2d7/0x3e0 [ 40.897132] ? math_error+0x400/0x400 [ 40.897136] ? vprintk_emit+0x3ea/0x590 [ 40.897155] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.897165] do_invalid_op+0x1b/0x20 [ 40.897170] invalid_op+0x22/0x40 [ 40.897175] RIP: 0010:__proc_create+0x696/0x880 [ 40.897177] RSP: 0018:ffff8801d9607410 EFLAGS: 00010286 [ 40.897182] RAX: dffffc0000000008 RBX: 1ffff1003b2c0e87 RCX: ffffffff8159ebae [ 40.897184] RDX: 0000000000000000 RSI: 1ffff1003b284970 RDI: 0000000000000293 [ 40.897187] RBP: ffff8801d9607580 R08: 1ffff1003b2c0e15 R09: 0000000000000000 [ 40.897190] R10: ffff8801d96072c8 R11: 0000000000000000 R12: ffff8801d981ef28 [ 40.897192] R13: ffff8801d9607558 R14: 0000000000000000 R15: ffff8801d9607518 [ 40.897205] ? vprintk_func+0x5e/0xc0 [ 40.897220] ? proc_register+0x370/0x370 [ 40.897229] ? __lock_is_held+0xb6/0x140 [ 40.897242] ? mark_held_locks+0xaf/0x100 [ 40.897248] ? __raw_spin_lock_init+0x1c/0x100 [ 40.897255] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 40.897265] proc_create_data+0x76/0x180 [ 40.897277] hashlimit_mt_check_common.isra.9+0xaee/0x1420 [ 40.897288] ? hashlimit_mt_destroy_v1+0x70/0x70 [ 40.897295] ? xt_find_match+0x150/0x1e0 [ 40.897301] ? lock_downgrade+0x980/0x980 [ 40.897307] ? rcu_read_lock_sched_held+0x108/0x120 [ 40.897313] ? pcpu_alloc+0x146/0x10e0 [ 40.897328] ? pcpu_free_area+0xa00/0xa00 [ 40.897337] hashlimit_mt_check_v1+0x48d/0x640 [ 40.897343] ? hashlimit_mt_check_v2+0x640/0x640 [ 40.897349] ? __kernel_text_address+0xd/0x40 [ 40.897358] ? trace_hardirqs_off+0xd/0x10 [ 40.897364] ? hashlimit_mt_check_v2+0x640/0x640 [ 40.897372] xt_check_match+0x231/0x7d0 [ 40.897379] ? xt_check_target+0x7d0/0x7d0 [ 40.897384] ? save_stack+0xa3/0xd0 [ 40.897390] ? kasan_slab_free+0x71/0xc0 [ 40.897393] ? kfree+0xd6/0x260 [ 40.897398] ? kvfree+0x36/0x60 [ 40.897404] ? translate_table+0xdd2/0x1610 [ 40.897413] ? mutex_unlock+0xd/0x10 [ 40.897422] ? xt_find_match+0x17b/0x1e0 [ 40.897437] find_check_entry.isra.8+0x3fc/0xcb0 [ 40.897453] ? ipt_do_table+0x1860/0x1860 [ 40.897462] ? mark_held_locks+0xaf/0x100 [ 40.897468] ? kfree+0xf0/0x260 [ 40.897477] ? trace_hardirqs_on+0xd/0x10 [ 40.897488] translate_table+0xed1/0x1610 [ 40.897511] ? alloc_counters.isra.11+0x7d0/0x7d0 [ 40.897519] ? kasan_check_write+0x14/0x20 [ 40.897526] ? _copy_from_user+0x99/0x110 [ 40.897534] do_ipt_set_ctl+0x370/0x5f0 [ 40.897543] ? translate_compat_table+0x1b90/0x1b90 [ 40.897559] ? mutex_unlock+0xd/0x10 [ 40.897565] ? nf_sockopt_find.constprop.0+0x1a7/0x220 [ 40.897574] nf_setsockopt+0x67/0xc0 [ 40.897584] ip_setsockopt+0xa1/0xb0 [ 40.897592] tcp_setsockopt+0x82/0xd0 [ 40.897602] sock_common_setsockopt+0x95/0xd0 [ 40.897611] SyS_setsockopt+0x189/0x360 [ 40.897619] ? SyS_recv+0x40/0x40 [ 40.897626] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 40.897633] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 40.897639] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 40.897650] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 40.897654] RIP: 0033:0x4408b9 [ 40.897656] RSP: 002b:00007ffce155c8c8 EFLAGS: 00000203 ORIG_RAX: 0000000000000036 [ 40.897661] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 00000000004408b9 [ 40.897663] RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 [ 40.897665] RBP: 00000000006cb018 R08: 0000000000000318 R09: 0000000000000000 [ 40.897668] R10: 000000002000fce8 R11: 0000000000000203 R12: 00000000004021e0 [ 40.897670] R13: 0000000000402270 R14: 0000000000000000 R15: 0000000000000000 [ 40.921306] Dumping ftrace buffer: [ 40.921376] (ftrace buffer empty) [ 40.921379] Kernel Offset: disabled [ 41.352657] Rebooting in 86400 seconds..