[....] Starting enhanced syslogd: rsyslogd[ 11.252574] audit: type=1400 audit(1514624956.104:5): avc: denied { syslog } for pid=3040 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: [ 17.059194] audit: type=1400 audit(1514624961.910:6): avc: denied { map } for pid=3180 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 '10.128.0.20' (ECDSA) to the list of known hosts. executing program [ 23.326094] audit: type=1400 audit(1514624968.177:7): avc: denied { map } for pid=3194 comm="syzkaller348753" path="/root/syzkaller348753887" 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 [ 23.354306] device lo entered promiscuous mode [ 23.361325] WARNING: CPU: 0 PID: 3195 at net/core/stream.c:206 sk_stream_kill_queues+0x3c5/0x520 [ 23.370285] Kernel panic - not syncing: panic_on_warn set ... [ 23.370285] [ 23.377615] CPU: 0 PID: 3195 Comm: syzkaller348753 Not tainted 4.15.0-rc5+ #170 [ 23.385025] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.394345] Call Trace: [ 23.396918] dump_stack+0x194/0x257 [ 23.400522] ? arch_local_irq_restore+0x53/0x53 [ 23.405162] ? vsnprintf+0x1ed/0x1900 [ 23.408933] panic+0x1e4/0x41c [ 23.412093] ? refcount_error_report+0x214/0x214 [ 23.416812] ? show_regs_print_info+0x18/0x18 [ 23.421283] ? __warn+0x1c1/0x200 [ 23.424708] ? sk_stream_kill_queues+0x3c5/0x520 [ 23.429431] __warn+0x1dc/0x200 [ 23.432678] ? sk_stream_kill_queues+0x3c5/0x520 [ 23.437402] report_bug+0x211/0x2d0 [ 23.441006] fixup_bug.part.11+0x37/0x80 [ 23.445034] do_error_trap+0x2d7/0x3e0 [ 23.448888] ? kfree_skbmem+0xe2/0x1d0 [ 23.452758] ? math_error+0x400/0x400 [ 23.456524] ? sock_rfree+0x103/0x160 [ 23.460289] ? sk_clear_memalloc+0x140/0x140 [ 23.464674] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 23.469489] do_invalid_op+0x1b/0x20 [ 23.473178] invalid_op+0x22/0x40 [ 23.476599] RIP: 0010:sk_stream_kill_queues+0x3c5/0x520 [ 23.481934] RSP: 0018:ffff8801c8157238 EFLAGS: 00010293 [ 23.487261] RAX: ffff8801cc008440 RBX: ffff8801cac2e040 RCX: ffffffff8425aaf5 [ 23.494507] RDX: 0000000000000000 RSI: ffffffff861407e0 RDI: ffff8801cac2e278 [ 23.501747] RBP: ffff8801c8157278 R08: 1ffff1003902add6 R09: 0000000000000000 [ 23.508992] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000b00 [ 23.516225] R13: ffff8801cac2e230 R14: ffffffff88057f00 R15: ffff8801cac2e178 [ 23.523478] ? sk_stream_kill_queues+0x3c5/0x520 [ 23.528207] ? sk_stream_kill_queues+0x3c5/0x520 [ 23.532935] inet_csk_destroy_sock+0x175/0x3f0 [ 23.537486] tcp_done+0x1e9/0x240 [ 23.540909] tcp_time_wait+0x60b/0xa60 [ 23.544767] tcp_rcv_state_process+0x34b0/0x4830 [ 23.549491] ? __skb_clone+0x294/0xa60 [ 23.553354] ? tcp_finish_connect+0x410/0x410 [ 23.557817] ? find_held_lock+0x35/0x1d0 [ 23.562291] ? skb_clone+0x20d/0x480 [ 23.565975] ? __release_sock+0xca/0x360 [ 23.570001] ? skb_split+0x1310/0x1310 [ 23.573851] ? __lock_is_held+0xb6/0x140 [ 23.577885] ? mark_held_locks+0xaf/0x100 [ 23.582004] tcp_v6_do_rcv+0x739/0x11c0 [ 23.585950] ? tcp_v6_do_rcv+0x739/0x11c0 [ 23.590061] ? trace_hardirqs_on+0xd/0x10 [ 23.594178] __release_sock+0x124/0x360 [ 23.598127] release_sock+0xa4/0x2a0 [ 23.601809] ? __local_bh_enable_ip+0x121/0x230 [ 23.606456] ? __release_sock+0x360/0x360 [ 23.610588] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.615571] ? tcp_close+0x574/0xfc0 [ 23.619249] ? trace_hardirqs_on+0xd/0x10 [ 23.623363] ? __local_bh_enable_ip+0x121/0x230 [ 23.628001] tcp_close+0x57c/0xfc0 [ 23.631509] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.636502] tls_sk_proto_close+0x4f8/0x800 [ 23.640793] ? tcp_check_oom+0x500/0x500 [ 23.644822] ? tls_write_space+0x2c0/0x2c0 [ 23.649029] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 23.654887] ? ipv6_sock_ac_close+0x2e8/0x3e0 [ 23.659357] ? ipv6_sock_mc_close+0x148/0x1a0 [ 23.663822] ? ip_mc_drop_socket+0x1ce/0x230 [ 23.668202] inet_release+0xed/0x1c0 [ 23.671885] inet6_release+0x50/0x70 [ 23.675564] sock_release+0x8d/0x1e0 [ 23.679244] ? sock_alloc_file+0x560/0x560 [ 23.683443] sock_close+0x16/0x20 [ 23.686864] __fput+0x327/0x7e0 [ 23.690116] ? fput+0x140/0x140 [ 23.693364] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 23.699301] ? _raw_spin_unlock_irq+0x27/0x70 [ 23.703769] ____fput+0x15/0x20 [ 23.707014] task_work_run+0x199/0x270 [ 23.710878] ? task_work_cancel+0x210/0x210 [ 23.715166] ? _raw_spin_unlock+0x22/0x30 [ 23.719280] ? switch_task_namespaces+0x87/0xc0 [ 23.723921] do_exit+0x9bb/0x1ad0 [ 23.727349] ? mm_update_next_owner+0x930/0x930 [ 23.732008] ? __sched_text_start+0x8/0x8 [ 23.736123] ? dev_change_flags+0xf5/0x140 [ 23.740337] ? rtnl_unlock+0xe/0x10 [ 23.744020] ? devinet_ioctl+0x491/0x19e0 [ 23.748142] ? inet_ifa_byprefix+0x1f0/0x1f0 [ 23.752545] ? __schedule+0x2060/0x2060 [ 23.756508] ? sock_do_ioctl+0x73/0xb0 [ 23.760399] ? sock_ioctl+0x1e2/0x440 [ 23.764867] ? exit_to_usermode_loop+0x8c/0x310 [ 23.769526] ? trace_hardirqs_off+0xd/0x10 [ 23.773736] ? exit_to_usermode_loop+0x198/0x310 [ 23.778461] ? ioctl_preallocate+0x2b0/0x2b0 [ 23.782839] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 23.788341] ? selinux_capable+0x40/0x40 [ 23.792381] do_group_exit+0x149/0x400 [ 23.796242] ? prepare_exit_to_usermode+0x340/0x340 [ 23.801235] ? SyS_exit+0x30/0x30 [ 23.804671] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.809664] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 23.814393] SyS_exit_group+0x1d/0x20 [ 23.818164] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 23.822892] RIP: 0033:0x440839 [ 23.826054] RSP: 002b:00007ffcca1976d8 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7 [ 23.833732] RAX: ffffffffffffffda RBX: 0100000000000000 RCX: 0000000000440839 [ 23.841059] RDX: 0000000000440839 RSI: 000000002003b000 RDI: 0000000000000000 [ 23.848299] RBP: 00000000006cb018 R08: 000000000000001c R09: 00000000004002c8 [ 23.855554] R10: 000000000000001c R11: 0000000000000202 R12: 0000000000000000 [ 23.862792] R13: 0000000000401d70 R14: 0000000000000000 R15: 0000000000000000 [ 23.870191] Dumping ftrace buffer: [ 23.873744] (ftrace buffer empty) [ 23.877431] Kernel Offset: disabled [ 23.881042] Rebooting in 86400 seconds..