[....] Starting enhanced syslogd: rsyslogd[ 13.278742] audit: type=1400 audit(1516048396.999:5): avc: denied { syslog } for pid=3515 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: [ 20.665239] audit: type=1400 audit(1516048404.386:6): avc: denied { map } for pid=3657 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 '10.128.15.193' (ECDSA) to the list of known hosts. executing program [ 26.913132] audit: type=1400 audit(1516048410.633:7): avc: denied { map } for pid=3670 comm="syzkaller826509" path="/root/syzkaller826509497" 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 [ 26.939835] TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. [ 26.958117] WARNING: CPU: 0 PID: 3670 at net/core/stream.c:206 sk_stream_kill_queues+0x3c5/0x520 [ 26.967091] Kernel panic - not syncing: panic_on_warn set ... [ 26.967091] [ 26.974445] CPU: 0 PID: 3670 Comm: syzkaller826509 Not tainted 4.15.0-rc7-next-20180115+ #97 [ 26.982991] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.992324] Call Trace: [ 26.994895] dump_stack+0x194/0x257 [ 26.999029] ? arch_local_irq_restore+0x53/0x53 [ 27.003677] ? vsnprintf+0x1ed/0x1900 [ 27.007453] panic+0x1e4/0x41c [ 27.010616] ? refcount_error_report+0x214/0x214 [ 27.015343] ? show_regs_print_info+0x18/0x18 [ 27.019814] ? kfree_skbmem+0xdd/0x1d0 [ 27.023673] ? __warn+0x1c1/0x200 [ 27.027111] ? sk_stream_kill_queues+0x3c5/0x520 [ 27.031838] __warn+0x1dc/0x200 [ 27.035090] ? sk_stream_kill_queues+0x3c5/0x520 [ 27.039835] report_bug+0x211/0x2d0 [ 27.043440] fixup_bug.part.11+0x37/0x80 [ 27.047473] do_error_trap+0x2d7/0x3e0 [ 27.051366] ? math_error+0x400/0x400 [ 27.055157] ? tcp_v4_destroy_sock+0x3b7/0x850 [ 27.059725] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.064544] do_invalid_op+0x1b/0x20 [ 27.068233] invalid_op+0x22/0x40 [ 27.071658] RIP: 0010:sk_stream_kill_queues+0x3c5/0x520 [ 27.076988] RSP: 0018:ffff8801bb61f5e0 EFLAGS: 00010293 [ 27.082324] RAX: ffff8801bbf242c0 RBX: ffff8801bd4e8040 RCX: ffffffff8439e2c5 [ 27.089566] RDX: 0000000000000000 RSI: 1ffff100376c3ea3 RDI: ffff8801bd4e8278 [ 27.096809] RBP: ffff8801bb61f620 R08: 1ffff100376c3e35 R09: 0000000000000000 [ 27.105078] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000b00 [ 27.112329] R13: ffff8801bd4e8230 R14: ffffffff888cdca0 R15: ffff8801bd4e8178 [ 27.119598] ? sk_stream_kill_queues+0x3c5/0x520 [ 27.124349] inet_csk_destroy_sock+0x175/0x3f0 [ 27.128910] tcp_close+0x8ad/0xfc0 [ 27.132429] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.137431] tls_sk_proto_close+0x4f8/0x800 [ 27.141740] ? tcp_check_oom+0x500/0x500 [ 27.145778] ? tls_write_space+0x2c0/0x2c0 [ 27.149994] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 27.155862] ? call_rcu_sched+0x12/0x20 [ 27.159818] ? ipv6_sock_ac_close+0x2e8/0x3e0 [ 27.164292] ? ipv6_sock_mc_close+0x148/0x1a0 [ 27.168764] ? ip_mc_drop_socket+0x1ce/0x230 [ 27.173156] inet_release+0xed/0x1c0 [ 27.176848] inet6_release+0x50/0x70 [ 27.180546] sock_release+0x8d/0x1e0 [ 27.184233] ? sock_alloc_file+0x560/0x560 [ 27.188448] sock_close+0x16/0x20 [ 27.191877] __fput+0x327/0x7e0 [ 27.195138] ? fput+0x140/0x140 [ 27.198395] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 27.204253] ? _raw_spin_unlock_irq+0x27/0x70 [ 27.208729] ____fput+0x15/0x20 [ 27.211985] task_work_run+0x199/0x270 [ 27.215847] ? task_work_cancel+0x210/0x210 [ 27.220143] ? _raw_spin_unlock+0x22/0x30 [ 27.224272] ? switch_task_namespaces+0x87/0xc0 [ 27.228920] do_exit+0x9bb/0x1ad0 [ 27.232347] ? __pmd_alloc+0x4e0/0x4e0 [ 27.236206] ? __local_bh_enable_ip+0x121/0x230 [ 27.240871] ? mm_update_next_owner+0x930/0x930 [ 27.245526] ? find_held_lock+0x35/0x1d0 [ 27.249568] ? handle_mm_fault+0x2a0/0x930 [ 27.253779] ? find_held_lock+0x35/0x1d0 [ 27.257828] ? __do_page_fault+0x5f7/0xc90 [ 27.262056] ? lock_downgrade+0x980/0x980 [ 27.266188] ? down_read_trylock+0xdb/0x170 [ 27.270486] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 27.275038] ? vmacache_find+0x5f/0x280 [ 27.278990] ? up_read+0x1a/0x40 [ 27.282343] ? __do_page_fault+0x3d6/0xc90 [ 27.286553] ? mm_fault_error+0x2c0/0x2c0 [ 27.290674] ? ipv6_setsockopt+0xd7/0x150 [ 27.294808] ? do_page_fault+0xee/0x720 [ 27.298758] ? __do_page_fault+0xc90/0xc90 [ 27.302973] ? SyS_setsockopt+0x215/0x360 [ 27.307096] do_group_exit+0x149/0x400 [ 27.310954] ? SyS_recv+0x40/0x40 [ 27.314396] ? SyS_exit+0x30/0x30 [ 27.317845] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.322839] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 27.327573] SyS_exit_group+0x1d/0x20 [ 27.331356] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 27.336084] RIP: 0033:0x43eef8 [ 27.339245] RSP: 002b:00007ffc5342cc88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 27.346923] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043eef8 [ 27.354172] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 27.361413] RBP: 00000000006ca018 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 27.368657] R10: 0000000020b0cffc R11: 0000000000000246 R12: 0000000000401c20 [ 27.375898] R13: 0000000000401cb0 R14: 0000000000000000 R15: 0000000000000000 [ 27.383893] Dumping ftrace buffer: [ 27.387530] (ftrace buffer empty) [ 27.391210] Kernel Offset: disabled [ 27.394810] Rebooting in 86400 seconds..