[....] Starting enhanced syslogd: rsyslogd[ 13.531785] audit: type=1400 audit(1516046437.383:5): avc: denied { syslog } for pid=3498 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: [ 17.843398] audit: type=1400 audit(1516046441.695:6): avc: denied { map } for pid=3640 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 '10.128.0.29' (ECDSA) to the list of known hosts. executing program [ 24.140859] audit: type=1400 audit(1516046447.992:7): avc: denied { map } for pid=3654 comm="syzkaller602807" path="/root/syzkaller602807504" 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 [ 24.167417] TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. [ 24.185476] WARNING: CPU: 0 PID: 3654 at net/core/stream.c:206 sk_stream_kill_queues+0x3c5/0x520 [ 24.194428] Kernel panic - not syncing: panic_on_warn set ... [ 24.194428] [ 24.201767] CPU: 0 PID: 3654 Comm: syzkaller602807 Not tainted 4.15.0-rc8+ #263 [ 24.209182] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.218508] Call Trace: [ 24.221075] dump_stack+0x194/0x257 [ 24.224676] ? arch_local_irq_restore+0x53/0x53 [ 24.229320] ? vsnprintf+0x1ed/0x1900 [ 24.233102] panic+0x1e4/0x41c [ 24.236264] ? refcount_error_report+0x214/0x214 [ 24.241001] ? show_regs_print_info+0x18/0x18 [ 24.245477] ? kfree_skbmem+0xdd/0x1d0 [ 24.249338] ? __warn+0x1c1/0x200 [ 24.252794] ? sk_stream_kill_queues+0x3c5/0x520 [ 24.257541] __warn+0x1dc/0x200 [ 24.260798] ? sk_stream_kill_queues+0x3c5/0x520 [ 24.265525] report_bug+0x211/0x2d0 [ 24.269128] fixup_bug.part.11+0x37/0x80 [ 24.273162] do_error_trap+0x2d7/0x3e0 [ 24.277033] ? math_error+0x400/0x400 [ 24.280819] ? tcp_v4_destroy_sock+0x3b8/0x850 [ 24.285379] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.290274] do_invalid_op+0x1b/0x20 [ 24.293973] invalid_op+0x22/0x40 [ 24.297399] RIP: 0010:sk_stream_kill_queues+0x3c5/0x520 [ 24.302728] RSP: 0018:ffff8801bbaaf5e0 EFLAGS: 00010293 [ 24.308060] RAX: ffff8801bb858380 RBX: ffff8801be2f0040 RCX: ffffffff84340ec5 [ 24.315314] RDX: 0000000000000000 RSI: 1ffff10037755ea3 RDI: ffff8801be2f0278 [ 24.322554] RBP: ffff8801bbaaf620 R08: 1ffff10037755e35 R09: 0000000000000000 [ 24.329967] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000b00 [ 24.337207] R13: ffff8801be2f0230 R14: ffffffff888c3180 R15: ffff8801be2f0178 [ 24.344471] ? sk_stream_kill_queues+0x3c5/0x520 [ 24.349211] inet_csk_destroy_sock+0x175/0x3f0 [ 24.353773] tcp_close+0x8ad/0xfc0 [ 24.357284] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.362277] tls_sk_proto_close+0x4f8/0x800 [ 24.366572] ? tcp_check_oom+0x500/0x500 [ 24.370606] ? tls_write_space+0x2c0/0x2c0 [ 24.374813] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 24.380674] ? ipv6_sock_ac_close+0x2e8/0x3e0 [ 24.385146] ? ipv6_sock_mc_close+0x148/0x1a0 [ 24.389614] ? ip_mc_drop_socket+0x1ce/0x230 [ 24.393994] inet_release+0xed/0x1c0 [ 24.397683] inet6_release+0x50/0x70 [ 24.401382] sock_release+0x8d/0x1e0 [ 24.405077] ? sock_alloc_file+0x560/0x560 [ 24.409312] sock_close+0x16/0x20 [ 24.412748] __fput+0x327/0x7e0 [ 24.416001] ? fput+0x140/0x140 [ 24.419260] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 24.425132] ? _raw_spin_unlock_irq+0x27/0x70 [ 24.429617] ____fput+0x15/0x20 [ 24.432869] task_work_run+0x199/0x270 [ 24.436732] ? task_work_cancel+0x210/0x210 [ 24.441029] ? _raw_spin_unlock+0x22/0x30 [ 24.445146] ? switch_task_namespaces+0x87/0xc0 [ 24.449790] do_exit+0x9bb/0x1ad0 [ 24.453218] ? __pmd_alloc+0x4e0/0x4e0 [ 24.457075] ? __local_bh_enable_ip+0x121/0x230 [ 24.461714] ? mm_update_next_owner+0x930/0x930 [ 24.466355] ? find_held_lock+0x35/0x1d0 [ 24.470392] ? handle_mm_fault+0x248/0x8d0 [ 24.474598] ? find_held_lock+0x35/0x1d0 [ 24.478637] ? __do_page_fault+0x5f7/0xc90 [ 24.482842] ? lock_downgrade+0x980/0x980 [ 24.486966] ? down_read_trylock+0xdb/0x170 [ 24.491255] ? __do_page_fault+0x32d/0xc90 [ 24.495463] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 24.500015] ? vmacache_find+0x5f/0x280 [ 24.503966] ? up_read+0x1a/0x40 [ 24.507300] ? __do_page_fault+0x3d6/0xc90 [ 24.511624] ? mm_fault_error+0x2c0/0x2c0 [ 24.515755] ? ipv6_setsockopt+0xd7/0x150 [ 24.519881] ? do_page_fault+0xee/0x720 [ 24.523826] ? __do_page_fault+0xc90/0xc90 [ 24.528035] ? SyS_setsockopt+0x215/0x360 [ 24.532249] do_group_exit+0x149/0x400 [ 24.536107] ? SyS_recv+0x40/0x40 [ 24.539529] ? SyS_exit+0x30/0x30 [ 24.542955] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.547944] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.552769] SyS_exit_group+0x1d/0x20 [ 24.556542] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 24.561265] RIP: 0033:0x43eef8 [ 24.564423] RSP: 002b:00007ffef98e6948 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 24.572111] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043eef8 [ 24.579351] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 24.586613] RBP: 00000000006ca018 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 24.593884] R10: 0000000020b0cffc R11: 0000000000000246 R12: 0000000000401c20 [ 24.601154] R13: 0000000000401cb0 R14: 0000000000000000 R15: 0000000000000000 [ 24.609174] Dumping ftrace buffer: [ 24.612872] (ftrace buffer empty) [ 24.616595] Kernel Offset: disabled [ 24.620225] Rebooting in 86400 seconds..