[....] Starting enhanced syslogd: rsyslogd[ 13.130562] audit: type=1400 audit(1516046449.898:5): avc: denied { syslog } for pid=3493 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: [ 18.381417] audit: type=1400 audit(1516046455.149:6): avc: denied { map } for pid=3632 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 '10.128.15.192' (ECDSA) to the list of known hosts. executing program [ 40.316373] audit: type=1400 audit(1516046477.084:7): avc: denied { map } for pid=3649 comm="syzkaller674384" path="/root/syzkaller674384218" 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 [ 40.342631] TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. [ 40.361505] WARNING: CPU: 1 PID: 3649 at net/core/stream.c:206 sk_stream_kill_queues+0x3c5/0x520 [ 40.370468] Kernel panic - not syncing: panic_on_warn set ... [ 40.370468] [ 40.377831] CPU: 1 PID: 3649 Comm: syzkaller674384 Not tainted 4.15.0-rc8+ #173 [ 40.385256] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.394588] Call Trace: [ 40.397152] dump_stack+0x194/0x257 [ 40.400763] ? arch_local_irq_restore+0x53/0x53 [ 40.405417] ? vsnprintf+0x1ed/0x1900 [ 40.409202] panic+0x1e4/0x41c [ 40.412368] ? refcount_error_report+0x214/0x214 [ 40.417094] ? show_regs_print_info+0x18/0x18 [ 40.421567] ? __warn+0x1c1/0x200 [ 40.425003] ? sk_stream_kill_queues+0x3c5/0x520 [ 40.429765] __warn+0x1dc/0x200 [ 40.433020] ? sk_stream_kill_queues+0x3c5/0x520 [ 40.437753] report_bug+0x211/0x2d0 [ 40.441360] fixup_bug.part.11+0x37/0x80 [ 40.445395] do_error_trap+0x2d7/0x3e0 [ 40.449269] ? math_error+0x400/0x400 [ 40.453065] ? tcp_v4_destroy_sock+0x3b8/0x850 [ 40.457639] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.462466] do_invalid_op+0x1b/0x20 [ 40.466154] invalid_op+0x22/0x40 [ 40.469578] RIP: 0010:sk_stream_kill_queues+0x3c5/0x520 [ 40.474909] RSP: 0018:ffff8801d900f448 EFLAGS: 00010293 [ 40.480247] RAX: ffff8801bb5ea280 RBX: ffff8801bdb30040 RCX: ffffffff84340ec5 [ 40.487492] RDX: 0000000000000000 RSI: 1ffff1003b201e70 RDI: ffff8801bdb30278 [ 40.494755] RBP: ffff8801d900f488 R08: 1ffff1003b201e02 R09: 0000000000000000 [ 40.502005] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000b00 [ 40.509245] R13: ffff8801bdb30230 R14: ffffffff888c3180 R15: ffff8801bdb30178 [ 40.516499] ? sk_stream_kill_queues+0x3c5/0x520 [ 40.521229] ? sk_stream_kill_queues+0x3c5/0x520 [ 40.525964] inet_csk_destroy_sock+0x175/0x3f0 [ 40.530522] tcp_close+0x8ad/0xfc0 [ 40.534035] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 40.539029] tls_sk_proto_close+0x4f8/0x800 [ 40.543324] ? tcp_check_oom+0x500/0x500 [ 40.547360] ? tls_write_space+0x2c0/0x2c0 [ 40.551570] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 40.557433] ? ipv6_sock_ac_close+0x2e8/0x3e0 [ 40.561904] ? ipv6_sock_mc_close+0x148/0x1a0 [ 40.566374] ? ip_mc_drop_socket+0x1ce/0x230 [ 40.570770] inet_release+0xed/0x1c0 [ 40.574461] inet6_release+0x50/0x70 [ 40.578147] sock_release+0x8d/0x1e0 [ 40.581843] ? sock_alloc_file+0x560/0x560 [ 40.586052] sock_close+0x16/0x20 [ 40.589490] __fput+0x327/0x7e0 [ 40.592758] ? fput+0x140/0x140 [ 40.596011] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 40.601868] ? _raw_spin_unlock_irq+0x27/0x70 [ 40.606342] ____fput+0x15/0x20 [ 40.609606] task_work_run+0x199/0x270 [ 40.613479] ? task_work_cancel+0x210/0x210 [ 40.617782] ? _raw_spin_unlock+0x22/0x30 [ 40.621906] ? switch_task_namespaces+0x87/0xc0 [ 40.626553] do_exit+0x9bb/0x1ad0 [ 40.629981] ? lock_release+0xa40/0xa40 [ 40.633932] ? mm_update_next_owner+0x930/0x930 [ 40.638571] ? __local_bh_enable_ip+0x121/0x230 [ 40.643214] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 40.648203] ? release_sock+0x1d4/0x2a0 [ 40.652158] ? trace_hardirqs_on+0xd/0x10 [ 40.656291] ? __local_bh_enable_ip+0x121/0x230 [ 40.660937] ? _raw_spin_unlock_bh+0x30/0x40 [ 40.665320] ? check_noncircular+0x20/0x20 [ 40.670151] ? __handle_mm_fault+0x80e/0x3ce0 [ 40.676122] ? check_noncircular+0x20/0x20 [ 40.682152] ? __pmd_alloc+0x4e0/0x4e0 [ 40.686191] ? do_tcp_setsockopt.isra.38+0x1ba/0x2130 [ 40.691351] ? lock_release+0xa40/0xa40 [ 40.695312] ? find_held_lock+0x35/0x1d0 [ 40.699354] ? handle_mm_fault+0x248/0x8d0 [ 40.703565] ? find_held_lock+0x35/0x1d0 [ 40.707606] ? __do_page_fault+0x5f7/0xc90 [ 40.711817] ? lock_downgrade+0x980/0x980 [ 40.715945] ? handle_mm_fault+0x410/0x8d0 [ 40.720148] ? down_read_trylock+0xdb/0x170 [ 40.724449] ? __do_page_fault+0x32d/0xc90 [ 40.728655] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 40.733208] ? vmacache_find+0x5f/0x280 [ 40.737161] do_group_exit+0x149/0x400 [ 40.741030] ? __do_page_fault+0x3d6/0xc90 [ 40.745234] ? SyS_exit+0x30/0x30 [ 40.748665] ? do_fast_syscall_32+0x156/0xf9d [ 40.753147] ? do_group_exit+0x400/0x400 [ 40.757198] SyS_exit_group+0x1d/0x20 [ 40.760982] do_fast_syscall_32+0x3ee/0xf9d [ 40.765284] ? do_int80_syscall_32+0x9d0/0x9d0 [ 40.769839] ? kasan_check_read+0x11/0x20 [ 40.773959] ? syscall_return_slowpath+0x550/0x550 [ 40.778863] ? SyS_rt_sigaction+0x94/0x1b0 [ 40.783070] ? SyS_sigprocmask+0x4b0/0x4b0 [ 40.787279] ? SyS_read+0x184/0x220 [ 40.790878] ? retint_user+0x18/0x18 [ 40.794567] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.799388] entry_SYSENTER_compat+0x54/0x63 [ 40.803768] RIP: 0023:0xf7fc1c79 [ 40.807105] RSP: 002b:00000000ffeae5dc EFLAGS: 00000292 ORIG_RAX: 00000000000000fc [ 40.814784] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000080eb298 [ 40.822026] RDX: 0000000000000000 RSI: 00000000080d5cf8 RDI: 00000000080eb2a0 [ 40.829268] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 40.836510] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 40.843751] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 40.851484] Dumping ftrace buffer: [ 40.855053] (ftrace buffer empty) [ 40.858745] Kernel Offset: disabled [ 40.862348] Rebooting in 86400 seconds..