INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-net-kasan-gce-3,10.128.0.52' (ECDSA) to the list of known hosts. 2017/08/12 12:31:50 parsed 1 programs 2017/08/12 12:31:50 executed programs: 0 syzkaller login: [ 32.523857] device lo entered promiscuous mode [ 32.537651] ------------[ cut here ]------------ [ 32.538453] WARNING: CPU: 1 PID: 2953 at net/core/stream.c:199 sk_stream_kill_queues+0x3ce/0x520 [ 32.539668] Kernel panic - not syncing: panic_on_warn set ... [ 32.539668] [ 32.540700] CPU: 1 PID: 2953 Comm: syz-executor0 Not tainted 4.13.0-rc4+ #2 [ 32.541650] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.542869] Call Trace: [ 32.543229] dump_stack+0x194/0x257 [ 32.543721] ? arch_local_irq_restore+0x53/0x53 [ 32.546513] panic+0x1e4/0x417 [ 32.549676] ? __warn+0x1d9/0x1d9 [ 32.553105] ? show_regs_print_info+0x65/0x65 [ 32.557591] ? sk_stream_kill_queues+0x3ce/0x520 [ 32.562314] __warn+0x1c4/0x1d9 [ 32.565562] ? sk_stream_kill_queues+0x3ce/0x520 [ 32.570286] report_bug+0x211/0x2d0 [ 32.573885] fixup_bug+0x40/0x90 [ 32.577222] do_trap+0x260/0x390 [ 32.580563] do_error_trap+0x120/0x390 [ 32.584417] ? check_noncircular+0x20/0x20 [ 32.588626] ? do_trap+0x390/0x390 [ 32.592138] ? sk_stream_kill_queues+0x3ce/0x520 [ 32.596861] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 32.601847] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.606662] do_invalid_op+0x1b/0x20 [ 32.610343] invalid_op+0x1e/0x30 [ 32.613762] RIP: 0010:sk_stream_kill_queues+0x3ce/0x520 [ 32.619098] RSP: 0018:ffff8801d182f108 EFLAGS: 00010297 [ 32.624429] RAX: ffff8801d1144140 RBX: ffff8801d13cb280 RCX: 0000000000000000 [ 32.631673] RDX: 0000000000000000 RSI: ffffffff85137b00 RDI: ffff8801d13cb280 [ 32.638910] RBP: ffff8801d182f148 R08: 0000000000000001 R09: 0000000000000000 [ 32.646146] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d13cb4d0 [ 32.653393] R13: ffff8801d13cb3b8 R14: ffff8801d13cb300 R15: ffff8801d13cb3b8 [ 32.660653] ? sk_stream_kill_queues+0x3ce/0x520 [ 32.665383] inet_csk_destroy_sock+0x175/0x3f0 [ 32.669938] dccp_close+0x84d/0xc10 [ 32.673540] inet_release+0xed/0x1c0 [ 32.677224] sock_release+0x8d/0x1e0 [ 32.680910] ? sock_release+0x1e0/0x1e0 [ 32.684849] sock_close+0x16/0x20 [ 32.688280] __fput+0x327/0x7e0 [ 32.691532] ? fput+0x140/0x140 [ 32.694782] ? check_same_owner+0x320/0x320 [ 32.699072] ? do_raw_spin_trylock+0x190/0x190 [ 32.703623] ? check_same_owner+0x320/0x320 [ 32.707934] ____fput+0x15/0x20 [ 32.711189] task_work_run+0x18a/0x260 [ 32.715057] ? task_work_cancel+0x210/0x210 [ 32.719353] ? _raw_spin_unlock+0x22/0x30 [ 32.723471] ? switch_task_namespaces+0x87/0xc0 [ 32.728113] do_exit+0xa32/0x1b10 [ 32.731536] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 32.736702] ? plist_check_list+0xa0/0xa0 [ 32.740827] ? exit_notify+0xb10/0xb10 [ 32.744687] ? plist_add+0x760/0x760 [ 32.748376] ? check_noncircular+0x20/0x20 [ 32.752584] ? check_same_owner+0x320/0x320 [ 32.756884] ? lock_acquire+0x1d5/0x580 [ 32.760826] ? futex_wait_setup+0x14a/0x3d0 [ 32.765118] ? __might_sleep+0x95/0x190 [ 32.769067] ? find_held_lock+0x35/0x1d0 [ 32.773098] ? check_noncircular+0x20/0x20 [ 32.777301] ? futex_wait+0x43e/0xa00 [ 32.781072] ? lock_downgrade+0x990/0x990 [ 32.785212] ? do_raw_spin_trylock+0x190/0x190 [ 32.789760] ? fault_in_user_writeable+0x90/0x90 [ 32.794501] ? find_held_lock+0x35/0x1d0 [ 32.798554] ? get_signal+0x855/0x17e0 [ 32.802409] ? lock_downgrade+0x990/0x990 [ 32.806532] do_group_exit+0x149/0x400 [ 32.810390] ? __lock_is_held+0xb6/0x140 [ 32.814419] ? SyS_exit+0x30/0x30 [ 32.817843] ? _raw_spin_unlock_irq+0x27/0x70 [ 32.822308] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.827296] get_signal+0x7e8/0x17e0 [ 32.831005] ? ptrace_notify+0x130/0x130 [ 32.835049] ? dev_get_by_name_rcu+0x1c8/0x270 [ 32.839610] ? exit_robust_list+0x240/0x240 [ 32.843911] do_signal+0x94/0x1ee0 [ 32.847427] ? inet_ifa_byprefix+0x1e0/0x1e0 [ 32.851807] ? setup_sigcontext+0x7d0/0x7d0 [ 32.856117] ? sock_do_ioctl+0x73/0xb0 [ 32.859981] ? sock_ioctl+0x1e2/0x440 [ 32.863752] ? exit_to_usermode_loop+0x98/0x2d0 [ 32.868398] exit_to_usermode_loop+0x21c/0x2d0 [ 32.872975] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 32.878482] ? selinux_capable+0x40/0x40 [ 32.882517] syscall_return_slowpath+0x3a7/0x450 [ 32.887242] ? prepare_exit_to_usermode+0x220/0x220 [ 32.892236] ? entry_SYSCALL_64_fastpath+0x91/0xbe [ 32.897135] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.902121] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 32.906854] entry_SYSCALL_64_fastpath+0xbc/0xbe [ 32.911578] RIP: 0033:0x4512e9 [ 32.914739] RSP: 002b:00007f63a4be4cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 32.922413] RAX: fffffffffffffe00 RBX: 00000000007180c8 RCX: 00000000004512e9 [ 32.929651] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000007180c8 [ 32.936892] RBP: 00000000007180a8 R08: 0000000000000000 R09: 0000000000000000 [ 32.944165] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 32.951404] R13: 00007fff040cfbef R14: 00007f63a4be59c0 R15: 0000000000000002 [ 32.958817] Dumping ftrace buffer: [ 32.962400] (ftrace buffer empty) [ 32.966081] Kernel Offset: disabled [ 32.969706] Rebooting in 86400 seconds..