[....] Starting enhanced syslogd: rsyslogd[ 13.169639] audit: type=1400 audit(1516047115.171:5): avc: denied { syslog } for pid=3508 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: [ 17.300087] audit: type=1400 audit(1516047119.301:6): avc: denied { map } for pid=3646 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 '10.128.0.35' (ECDSA) to the list of known hosts. executing program [ 23.580555] audit: type=1400 audit(1516047125.582:7): avc: denied { map } for pid=3660 comm="syzkaller116856" path="/root/syzkaller116856889" 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 [ 23.606889] TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. [ 23.625470] WARNING: CPU: 1 PID: 3660 at net/core/stream.c:206 sk_stream_kill_queues+0x3c5/0x520 [ 23.634428] Kernel panic - not syncing: panic_on_warn set ... [ 23.634428] [ 23.641767] CPU: 1 PID: 3660 Comm: syzkaller116856 Not tainted 4.15.0-rc7+ #190 [ 23.649191] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.658542] Call Trace: [ 23.661112] dump_stack+0x194/0x257 [ 23.664717] ? arch_local_irq_restore+0x53/0x53 [ 23.669494] ? vsnprintf+0x1ed/0x1900 [ 23.673282] panic+0x1e4/0x41c [ 23.676456] ? refcount_error_report+0x214/0x214 [ 23.681186] ? show_regs_print_info+0x18/0x18 [ 23.685683] ? kfree_skbmem+0xdd/0x1d0 [ 23.689569] ? __warn+0x1c1/0x200 [ 23.693007] ? sk_stream_kill_queues+0x3c5/0x520 [ 23.697745] __warn+0x1dc/0x200 [ 23.701000] ? sk_stream_kill_queues+0x3c5/0x520 [ 23.705740] report_bug+0x211/0x2d0 [ 23.709350] fixup_bug.part.11+0x37/0x80 [ 23.713396] do_error_trap+0x2d7/0x3e0 [ 23.717277] ? math_error+0x400/0x400 [ 23.721062] ? tcp_v4_destroy_sock+0x3b7/0x850 [ 23.725637] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 23.730461] do_invalid_op+0x1b/0x20 [ 23.734159] invalid_op+0x22/0x40 [ 23.737595] RIP: 0010:sk_stream_kill_queues+0x3c5/0x520 [ 23.742930] RSP: 0018:ffff8801bb5175e0 EFLAGS: 00010293 [ 23.748265] RAX: ffff8801bbe2e440 RBX: ffff8801bdf08040 RCX: ffffffff84353215 [ 23.755519] RDX: 0000000000000000 RSI: 1ffff100376a2ea3 RDI: ffff8801bdf08278 [ 23.762783] RBP: ffff8801bb517620 R08: 1ffff100376a2e35 R09: 0000000000000000 [ 23.770035] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000b00 [ 23.777288] R13: ffff8801bdf08230 R14: ffffffff888c7e20 R15: ffff8801bdf08178 [ 23.784563] ? sk_stream_kill_queues+0x3c5/0x520 [ 23.789311] inet_csk_destroy_sock+0x175/0x3f0 [ 23.793882] tcp_close+0x8ad/0xfc0 [ 23.797406] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.802404] tls_sk_proto_close+0x4f8/0x800 [ 23.806706] ? tcp_check_oom+0x500/0x500 [ 23.810743] ? tls_write_space+0x2c0/0x2c0 [ 23.814955] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 23.820831] ? call_rcu_sched+0x12/0x20 [ 23.824784] ? ipv6_sock_ac_close+0x2e8/0x3e0 [ 23.829257] ? ipv6_sock_mc_close+0x148/0x1a0 [ 23.833729] ? ip_mc_drop_socket+0x1ce/0x230 [ 23.838118] inet_release+0xed/0x1c0 [ 23.841811] inet6_release+0x50/0x70 [ 23.845512] sock_release+0x8d/0x1e0 [ 23.849203] ? sock_alloc_file+0x560/0x560 [ 23.853417] sock_close+0x16/0x20 [ 23.856843] __fput+0x327/0x7e0 [ 23.860103] ? fput+0x140/0x140 [ 23.863356] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 23.869223] ? _raw_spin_unlock_irq+0x27/0x70 [ 23.873698] ____fput+0x15/0x20 [ 23.876951] task_work_run+0x199/0x270 [ 23.880817] ? task_work_cancel+0x210/0x210 [ 23.885116] ? _raw_spin_unlock+0x22/0x30 [ 23.889237] ? switch_task_namespaces+0x87/0xc0 [ 23.893884] do_exit+0x9bb/0x1ad0 [ 23.897312] ? __pmd_alloc+0x4e0/0x4e0 [ 23.901175] ? __local_bh_enable_ip+0x121/0x230 [ 23.905821] ? mm_update_next_owner+0x930/0x930 [ 23.910471] ? find_held_lock+0x35/0x1d0 [ 23.914518] ? handle_mm_fault+0x248/0x8d0 [ 23.918729] ? find_held_lock+0x35/0x1d0 [ 23.922773] ? __do_page_fault+0x5f7/0xc90 [ 23.926994] ? lock_downgrade+0x980/0x980 [ 23.931132] ? down_read_trylock+0xdb/0x170 [ 23.935428] ? __do_page_fault+0x32d/0xc90 [ 23.939638] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 23.944193] ? vmacache_find+0x5f/0x280 [ 23.948152] ? up_read+0x1a/0x40 [ 23.951503] ? __do_page_fault+0x3d6/0xc90 [ 23.955720] ? mm_fault_error+0x2c0/0x2c0 [ 23.959847] ? ipv6_setsockopt+0xd7/0x150 [ 23.963976] ? do_page_fault+0xee/0x720 [ 23.967935] ? __do_page_fault+0xc90/0xc90 [ 23.972170] ? SyS_setsockopt+0x215/0x360 [ 23.976300] do_group_exit+0x149/0x400 [ 23.980174] ? SyS_recv+0x40/0x40 [ 23.983602] ? SyS_exit+0x30/0x30 [ 23.987043] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.992041] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 23.996779] SyS_exit_group+0x1d/0x20 [ 24.000569] entry_SYSCALL_64_fastpath+0x23/0x9a [ 24.005299] RIP: 0033:0x43eef8 [ 24.008477] RSP: 002b:00007ffcc1589ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 24.016161] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043eef8 [ 24.023407] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 24.030655] RBP: 00000000006ca018 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 24.037910] R10: 0000000020b0cffc R11: 0000000000000246 R12: 0000000000401c20 [ 24.045243] R13: 0000000000401cb0 R14: 0000000000000000 R15: 0000000000000000 [ 24.053051] Dumping ftrace buffer: [ 24.056643] (ftrace buffer empty) [ 24.060326] Kernel Offset: disabled [ 24.063929] Rebooting in 86400 seconds..