[....] Starting enhanced syslogd: rsyslogd[ 15.813904] audit: type=1400 audit(1518225847.711:5): 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: [ 19.306579] audit: type=1400 audit(1518225851.204:6): 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 '10.128.0.33' (ECDSA) to the list of known hosts. executing program [ 26.195246] audit: type=1400 audit(1518225858.093:7): avc: denied { map } for pid=4158 comm="syzkaller390983" path="/root/syzkaller390983884" 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 [ 26.198238] ------------[ cut here ]------------ [ 26.225989] name len 0 [ 26.228685] WARNING: CPU: 1 PID: 4158 at fs/proc/generic.c:354 __proc_create+0x6ac/0x890 [ 26.236895] Kernel panic - not syncing: panic_on_warn set ... [ 26.236895] [ 26.244227] CPU: 1 PID: 4158 Comm: syzkaller390983 Not tainted 4.15.0+ #306 [ 26.251293] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.260614] Call Trace: [ 26.263173] dump_stack+0x194/0x257 [ 26.266772] ? arch_local_irq_restore+0x53/0x53 [ 26.271415] ? vsnprintf+0x1ed/0x1900 [ 26.275192] panic+0x1e4/0x41c [ 26.278357] ? refcount_error_report+0x214/0x214 [ 26.283085] ? show_regs_print_info+0x18/0x18 [ 26.287562] ? __warn+0x1c1/0x200 [ 26.290990] ? __proc_create+0x6ac/0x890 [ 26.295029] __warn+0x1dc/0x200 [ 26.298280] ? __proc_create+0x6ac/0x890 [ 26.302314] report_bug+0x211/0x2d0 [ 26.305920] fixup_bug.part.11+0x37/0x80 [ 26.309952] do_error_trap+0x2d7/0x3e0 [ 26.313810] ? vprintk_default+0x28/0x30 [ 26.317843] ? math_error+0x400/0x400 [ 26.321615] ? printk+0xaa/0xca [ 26.324868] ? show_regs_print_info+0x18/0x18 [ 26.329341] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.334158] do_invalid_op+0x1b/0x20 [ 26.337846] invalid_op+0x22/0x40 [ 26.341271] RIP: 0010:__proc_create+0x6ac/0x890 [ 26.345905] RSP: 0018:ffff8801b75972d0 EFLAGS: 00010282 [ 26.351241] RAX: dffffc0000000008 RBX: 1ffff10036eb2e5f RCX: ffffffff815a5c5e [ 26.358483] RDX: 0000000000000000 RSI: 1ffff10036eb2e0a RDI: 1ffff10036eb2ddf [ 26.365722] RBP: ffff8801b7597440 R08: 1ffff10036eb2da1 R09: 0000000000000000 [ 26.372961] R10: ffff8801b7597188 R11: 0000000000000000 R12: ffff8801b217d630 [ 26.380201] R13: ffff8801b7597418 R14: 0000000000000000 R15: ffff8801b75973d8 [ 26.387456] ? vprintk_func+0x5e/0xc0 [ 26.391237] ? proc_register+0x3b0/0x3b0 [ 26.395290] ? __lock_is_held+0xb6/0x140 [ 26.399334] ? mark_held_locks+0xaf/0x100 [ 26.403454] ? __raw_spin_lock_init+0x1c/0x100 [ 26.408012] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.413019] proc_create_data+0x76/0x180 [ 26.417064] hashlimit_mt_check_common.isra.9+0xaee/0x1420 [ 26.422663] ? hashlimit_mt_destroy_v1+0x70/0x70 [ 26.427392] ? xt_find_match+0x150/0x1e0 [ 26.431433] ? lock_downgrade+0x980/0x980 [ 26.435552] ? hashlimit_mt_check_common.isra.9+0xde0/0x1420 [ 26.441332] ? hashlimit_mt_destroy_v1+0x70/0x70 [ 26.446066] ? __mutex_unlock_slowpath+0xe9/0xac0 [ 26.450879] ? pcpu_free_area+0xa00/0xa00 [ 26.455000] hashlimit_mt_check_v1+0x48d/0x640 [ 26.459559] ? hashlimit_mt_check_v2+0x640/0x640 [ 26.464293] ? module_unload_free+0x5b0/0x5b0 [ 26.468758] ? hashlimit_mt_check_v2+0x640/0x640 [ 26.473486] xt_check_match+0x231/0x7d0 [ 26.477437] ? xt_check_target+0x7d0/0x7d0 [ 26.481649] ? mutex_unlock+0xd/0x10 [ 26.485337] ? mutex_unlock+0xd/0x10 [ 26.489032] ? xt_find_match+0x17b/0x1e0 [ 26.493084] find_check_entry.isra.7+0x42d/0xcf0 [ 26.497824] ? do_add_counters+0x560/0x560 [ 26.502047] ? kfree+0xf3/0x260 [ 26.505305] ? trace_hardirqs_on+0xd/0x10 [ 26.509433] translate_table+0xf52/0x1690 [ 26.513568] ? alloc_counters.isra.10+0x7e0/0x7e0 [ 26.518384] ? kasan_check_write+0x14/0x20 [ 26.522589] ? _copy_from_user+0x99/0x110 [ 26.526711] do_ip6t_set_ctl+0x370/0x5f0 [ 26.530746] ? translate_compat_table+0x1c50/0x1c50 [ 26.535743] ? mutex_unlock+0xd/0x10 [ 26.539431] ? nf_sockopt_find.constprop.0+0x1a7/0x220 [ 26.544681] nf_setsockopt+0x67/0xc0 [ 26.548373] ipv6_setsockopt+0x10b/0x130 [ 26.552409] rawv6_setsockopt+0x4a/0xf0 [ 26.556364] sock_common_setsockopt+0x95/0xd0 [ 26.560836] SyS_setsockopt+0x189/0x360 [ 26.564791] ? SyS_recv+0x40/0x40 [ 26.568217] ? mm_fault_error+0x2c0/0x2c0 [ 26.572336] ? move_addr_to_kernel+0x60/0x60 [ 26.576719] ? do_syscall_64+0xb7/0x940 [ 26.580667] ? SyS_recv+0x40/0x40 [ 26.584094] do_syscall_64+0x282/0x940 [ 26.587952] ? __do_page_fault+0xc90/0xc90 [ 26.592157] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.596886] ? syscall_return_slowpath+0x550/0x550 [ 26.601788] ? syscall_return_slowpath+0x2ac/0x550 [ 26.606690] ? prepare_exit_to_usermode+0x350/0x350 [ 26.611681] ? retint_user+0x18/0x18 [ 26.615376] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.620196] entry_SYSCALL_64_after_hwframe+0x26/0x9b [ 26.625354] RIP: 0033:0x441319 [ 26.628513] RSP: 002b:00007ffd97f06dc8 EFLAGS: 00000203 ORIG_RAX: 0000000000000036 [ 26.636189] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 0000000000441319 [ 26.643431] RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 [ 26.650670] RBP: 00000000006cb018 R08: 00000000000005c8 R09: 0000000000000000 [ 26.657911] R10: 0000000020ee3a38 R11: 0000000000000203 R12: 0000000000402c40 [ 26.665158] R13: 0000000000402cd0 R14: 0000000000000000 R15: 0000000000000000 [ 26.672937] Dumping ftrace buffer: [ 26.676533] (ftrace buffer empty) [ 26.680219] Kernel Offset: disabled [ 26.683819] Rebooting in 86400 seconds..