[....] Starting enhanced syslogd: rsyslogd[ 12.889877] audit: type=1400 audit(1516046513.061:5): 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: [ 18.468038] audit: type=1400 audit(1516046518.639:6): avc: denied { map } for pid=3648 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 '10.128.15.209' (ECDSA) to the list of known hosts. executing program [ 24.710331] audit: type=1400 audit(1516046524.882:7): avc: denied { map } for pid=3662 comm="syzkaller364284" path="/root/syzkaller364284123" 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 [ 24.736776] TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. [ 24.747148] WARNING: CPU: 1 PID: 3662 at net/core/stream.c:206 sk_stream_kill_queues+0x3c5/0x520 [ 24.747160] Kernel panic - not syncing: panic_on_warn set ... [ 24.747160] [ 24.747167] CPU: 1 PID: 3662 Comm: syzkaller364284 Not tainted 4.15.0-rc7-mm1+ #56 [ 24.747171] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.747173] Call Trace: [ 24.747185] dump_stack+0x194/0x257 [ 24.747197] ? arch_local_irq_restore+0x53/0x53 [ 24.747212] ? vsnprintf+0x1ed/0x1900 [ 24.747227] panic+0x1e4/0x41c [ 24.747235] ? refcount_error_report+0x214/0x214 [ 24.747241] ? show_regs_print_info+0x18/0x18 [ 24.747251] ? kfree_skbmem+0xdd/0x1d0 [ 24.747264] ? __warn+0x1c1/0x200 [ 24.747278] ? sk_stream_kill_queues+0x3c5/0x520 [ 24.747285] __warn+0x1dc/0x200 [ 24.747294] ? sk_stream_kill_queues+0x3c5/0x520 [ 24.747305] report_bug+0x211/0x2d0 [ 24.747320] fixup_bug.part.11+0x37/0x80 [ 24.747328] do_error_trap+0x2d7/0x3e0 [ 24.747340] ? math_error+0x400/0x400 [ 24.747358] ? tcp_v4_destroy_sock+0x3b7/0x850 [ 24.747382] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.747399] do_invalid_op+0x1b/0x20 [ 24.747407] invalid_op+0x22/0x40 [ 24.747414] RIP: 0010:sk_stream_kill_queues+0x3c5/0x520 [ 24.747419] RSP: 0018:ffff8801d9fef5e0 EFLAGS: 00010293 [ 24.747426] RAX: ffff8801d9fde300 RBX: ffff8801be2aa040 RCX: ffffffff843982c5 [ 24.747430] RDX: 0000000000000000 RSI: 1ffff1003b3fdea3 RDI: ffff8801be2aa278 [ 24.747434] RBP: ffff8801d9fef620 R08: 1ffff1003b3fde35 R09: 0000000000000000 [ 24.747438] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000b00 [ 24.747442] R13: ffff8801be2aa230 R14: ffffffff888ccae0 R15: ffff8801be2aa178 [ 24.747462] ? sk_stream_kill_queues+0x3c5/0x520 [ 24.747491] inet_csk_destroy_sock+0x175/0x3f0 [ 24.747504] tcp_close+0x8ad/0xfc0 [ 24.747512] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.747534] tls_sk_proto_close+0x4f8/0x800 [ 24.747548] ? tcp_check_oom+0x500/0x500 [ 24.747561] ? tls_write_space+0x2c0/0x2c0 [ 24.747571] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 24.747581] ? call_rcu_sched+0x12/0x20 [ 24.747596] ? ipv6_sock_ac_close+0x2e8/0x3e0 [ 24.747610] ? ipv6_sock_mc_close+0x148/0x1a0 [ 24.747620] ? ip_mc_drop_socket+0x1ce/0x230 [ 24.747636] inet_release+0xed/0x1c0 [ 24.747648] inet6_release+0x50/0x70 [ 24.747658] sock_release+0x8d/0x1e0 [ 24.747667] ? sock_alloc_file+0x560/0x560 [ 24.747674] sock_close+0x16/0x20 [ 24.747683] __fput+0x327/0x7e0 [ 24.747700] ? fput+0x140/0x140 [ 24.747710] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 24.747716] ? _raw_spin_unlock_irq+0x27/0x70 [ 24.747734] ____fput+0x15/0x20 [ 24.747742] task_work_run+0x199/0x270 [ 24.747755] ? task_work_cancel+0x210/0x210 [ 24.747764] ? _raw_spin_unlock+0x22/0x30 [ 24.747773] ? switch_task_namespaces+0x87/0xc0 [ 24.747789] do_exit+0x9bb/0x1ad0 [ 24.747797] ? __pmd_alloc+0x4e0/0x4e0 [ 24.747806] ? __local_bh_enable_ip+0x121/0x230 [ 24.747819] ? mm_update_next_owner+0x930/0x930 [ 24.747826] ? find_held_lock+0x35/0x1d0 [ 24.747846] ? handle_mm_fault+0x2a0/0x930 [ 24.747859] ? find_held_lock+0x35/0x1d0 [ 24.747879] ? __do_page_fault+0x5f7/0xc90 [ 24.747889] ? lock_downgrade+0x980/0x980 [ 24.747911] ? down_read_trylock+0xdb/0x170 [ 24.747922] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 24.747927] ? vmacache_find+0x5f/0x280 [ 24.747945] ? up_read+0x1a/0x40 [ 24.747954] ? __do_page_fault+0x3d6/0xc90 [ 24.747974] ? mm_fault_error+0x2c0/0x2c0 [ 24.747984] ? ipv6_setsockopt+0xd7/0x150 [ 24.748004] ? do_page_fault+0xee/0x720 [ 24.748015] ? __do_page_fault+0xc90/0xc90 [ 24.748030] ? SyS_setsockopt+0x215/0x360 [ 24.748044] do_group_exit+0x149/0x400 [ 24.748049] ? SyS_recv+0x40/0x40 [ 24.748060] ? SyS_exit+0x30/0x30 [ 24.748070] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.748080] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.748094] SyS_exit_group+0x1d/0x20 [ 24.748103] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 24.748108] RIP: 0033:0x43eef8 [ 24.748112] RSP: 002b:00007fff0bd7a398 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 24.748119] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043eef8 [ 24.748123] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 24.748127] RBP: 00000000006ca018 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 24.748131] R10: 0000000020b0cffc R11: 0000000000000246 R12: 0000000000401c20 [ 24.748135] R13: 0000000000401cb0 R14: 0000000000000000 R15: 0000000000000000 [ 24.756737] Dumping ftrace buffer: [ 24.756784] (ftrace buffer empty) [ 24.756787] Kernel Offset: disabled [ 25.180022] Rebooting in 86400 seconds..