[....] 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: [ 35.257414] random: sshd: uninitialized urandom read (32 bytes read) [ 35.427727] kauditd_printk_skb: 10 callbacks suppressed [ 35.427737] audit: type=1400 audit(1566862002.086:35): avc: denied { map } for pid=6872 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 [ 35.482134] random: sshd: uninitialized urandom read (32 bytes read) [ 35.988944] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.137' (ECDSA) to the list of known hosts. [ 41.700414] urandom_read: 1 callbacks suppressed [ 41.700419] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 41.821139] audit: type=1400 audit(1566862008.486:36): avc: denied { map } for pid=6884 comm="syz-executor148" path="/root/syz-executor148668923" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.230762] [ 49.232447] ====================================================== [ 49.238756] WARNING: possible circular locking dependency detected [ 49.245064] 4.14.140 #36 Not tainted [ 49.248777] ------------------------------------------------------ [ 49.255173] syz-executor148/8907 is trying to acquire lock: [ 49.260873] (event_mutex){+.+.}, at: [] perf_trace_destroy+0x28/0x100 [ 49.269116] [ 49.269116] but task is already holding lock: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.275078] (&event->child_mutex){+.+.}, at: [] perf_event_release_kernel+0x207/0x880 [ 49.284703] [ 49.284703] which lock already depends on the new lock. [ 49.284703] [ 49.293025] [ 49.293025] the existing dependency chain (in reverse order) is: [ 49.300633] [ 49.300633] -> #5 (&event->child_mutex){+.+.}: [ 49.306707] lock_acquire+0x16f/0x430 [ 49.311022] __mutex_lock+0xe8/0x1470 [ 49.315339] mutex_lock_nested+0x16/0x20 [ 49.319923] perf_event_for_each_child+0x8a/0x150 [ 49.325371] perf_ioctl+0x1d9/0xdf0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.329514] do_vfs_ioctl+0x7ae/0x1060 [ 49.333920] SyS_ioctl+0x8f/0xc0 [ 49.337803] do_syscall_64+0x1e8/0x640 [ 49.342203] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 49.347903] [ 49.347903] -> #4 (&cpuctx_mutex){+.+.}: [ 49.353446] lock_acquire+0x16f/0x430 [ 49.357764] __mutex_lock+0xe8/0x1470 [ 49.362079] mutex_lock_nested+0x16/0x20 [ 49.366657] perf_event_init_cpu+0xc2/0x170 [ 49.371494] perf_event_init+0x2d8/0x31a [ 49.376073] start_kernel+0x3b6/0x6fd executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.380397] x86_64_start_reservations+0x29/0x2b [ 49.385667] x86_64_start_kernel+0x77/0x7b [ 49.390417] secondary_startup_64+0xa5/0xb0 [ 49.395244] [ 49.395244] -> #3 (pmus_lock){+.+.}: [ 49.400435] lock_acquire+0x16f/0x430 [ 49.404756] __mutex_lock+0xe8/0x1470 [ 49.409071] mutex_lock_nested+0x16/0x20 [ 49.413652] perf_event_init_cpu+0x2f/0x170 [ 49.418489] cpuhp_invoke_callback+0x1ea/0x1ab0 [ 49.423677] _cpu_up+0x228/0x530 [ 49.427563] do_cpu_up+0x121/0x150 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.431616] cpu_up+0x1b/0x20 [ 49.435239] smp_init+0x157/0x170 [ 49.439213] kernel_init_freeable+0x30b/0x532 [ 49.444225] kernel_init+0x12/0x162 [ 49.448365] ret_from_fork+0x24/0x30 [ 49.452591] [ 49.452591] -> #2 (cpu_hotplug_lock.rw_sem){++++}: [ 49.459005] lock_acquire+0x16f/0x430 [ 49.463318] cpus_read_lock+0x3d/0xc0 [ 49.467635] static_key_slow_inc+0x13/0x30 [ 49.472387] tracepoint_probe_register_prio+0x4d6/0x6d0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.478267] tracepoint_probe_register+0x2b/0x40 [ 49.483542] trace_event_reg+0x277/0x330 [ 49.488117] perf_trace_init+0x449/0xaa0 [ 49.492692] perf_tp_event_init+0x7d/0xf0 [ 49.497358] perf_try_init_event+0x164/0x200 [ 49.502280] perf_event_alloc.part.0+0xd90/0x25b0 [ 49.507740] SYSC_perf_event_open+0xad1/0x2690 [ 49.512851] SyS_perf_event_open+0x34/0x40 [ 49.517603] do_syscall_64+0x1e8/0x640 [ 49.522008] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 49.527714] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.527714] -> #1 (tracepoints_mutex){+.+.}: [ 49.533612] lock_acquire+0x16f/0x430 [ 49.538243] __mutex_lock+0xe8/0x1470 [ 49.542557] mutex_lock_nested+0x16/0x20 [ 49.547138] tracepoint_probe_register_prio+0x36/0x6d0 [ 49.552932] tracepoint_probe_register+0x2b/0x40 [ 49.558206] trace_event_reg+0x277/0x330 [ 49.562781] perf_trace_init+0x449/0xaa0 [ 49.567358] perf_tp_event_init+0x7d/0xf0 [ 49.572021] perf_try_init_event+0x164/0x200 [ 49.577088] perf_event_alloc.part.0+0xd90/0x25b0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.582454] SYSC_perf_event_open+0xad1/0x2690 [ 49.587551] SyS_perf_event_open+0x34/0x40 [ 49.592302] do_syscall_64+0x1e8/0x640 [ 49.596704] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 49.602492] [ 49.602492] -> #0 (event_mutex){+.+.}: [ 49.607882] __lock_acquire+0x2cb3/0x4620 [ 49.612556] lock_acquire+0x16f/0x430 [ 49.616876] __mutex_lock+0xe8/0x1470 [ 49.621195] mutex_lock_nested+0x16/0x20 [ 49.625866] perf_trace_destroy+0x28/0x100 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.630793] tp_perf_event_destroy+0x16/0x20 [ 49.635719] _free_event+0x330/0xe70 [ 49.639967] free_event+0x38/0x50 [ 49.643942] perf_event_release_kernel+0x364/0x880 [ 49.649394] perf_release+0x37/0x50 [ 49.653539] __fput+0x275/0x7a0 [ 49.657333] ____fput+0x16/0x20 [ 49.661130] task_work_run+0x114/0x190 [ 49.665533] do_exit+0x7df/0x2c10 [ 49.669502] do_group_exit+0x111/0x330 [ 49.673903] get_signal+0x381/0x1cd0 [ 49.678143] do_signal+0x86/0x19a0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.682200] exit_to_usermode_loop+0x15c/0x220 [ 49.687300] do_syscall_64+0x4bc/0x640 [ 49.691707] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 49.697414] [ 49.697414] other info that might help us debug this: [ 49.697414] [ 49.705551] Chain exists of: [ 49.705551] event_mutex --> &cpuctx_mutex --> &event->child_mutex [ 49.705551] [ 49.716311] Possible unsafe locking scenario: [ 49.716311] [ 49.722362] CPU0 CPU1 [ 49.727022] ---- ---- executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.731676] lock(&event->child_mutex); [ 49.735735] lock(&cpuctx_mutex); [ 49.741870] lock(&event->child_mutex); [ 49.748442] lock(event_mutex); [ 49.751800] [ 49.751800] *** DEADLOCK *** [ 49.751800] [ 49.757850] 2 locks held by syz-executor148/8907: [ 49.762682] #0: (&ctx->mutex){+.+.}, at: [] perf_event_release_kernel+0x1fd/0x880 [ 49.772194] #1: (&event->child_mutex){+.+.}, at: [] perf_event_release_kernel+0x207/0x880 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.782255] [ 49.782255] stack backtrace: [ 49.786748] CPU: 1 PID: 8907 Comm: syz-executor148 Not tainted 4.14.140 #36 [ 49.793837] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.803186] Call Trace: [ 49.805774] dump_stack+0x138/0x197 [ 49.809414] print_circular_bug.isra.0.cold+0x1cc/0x28f [ 49.814779] __lock_acquire+0x2cb3/0x4620 [ 49.818927] ? _raw_spin_unlock_irq+0x5e/0x90 [ 49.823516] ? trace_hardirqs_on+0x10/0x10 [ 49.827767] ? alloc_perf_context+0xf0/0xf0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.832203] lock_acquire+0x16f/0x430 [ 49.836000] ? perf_trace_destroy+0x28/0x100 [ 49.840403] ? perf_trace_destroy+0x28/0x100 [ 49.844812] __mutex_lock+0xe8/0x1470 [ 49.848614] ? perf_trace_destroy+0x28/0x100 [ 49.853019] ? perf_trace_destroy+0x28/0x100 [ 49.857429] ? alloc_perf_context+0xf0/0xf0 [ 49.861746] ? mutex_trylock+0x1c0/0x1c0 [ 49.865804] ? save_trace+0x290/0x290 [ 49.869606] ? __mutex_lock+0x36a/0x1470 [ 49.873669] ? perf_event_release_kernel+0x1f3/0x880 [ 49.878770] ? __lock_is_held+0xb6/0x140 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.882829] ? check_preemption_disabled+0x3c/0x250 [ 49.887849] mutex_lock_nested+0x16/0x20 [ 49.891905] ? mutex_lock_nested+0x16/0x20 [ 49.896136] perf_trace_destroy+0x28/0x100 [ 49.900368] tp_perf_event_destroy+0x16/0x20 [ 49.904773] ? perf_tp_event_init+0xf0/0xf0 [ 49.909355] _free_event+0x330/0xe70 [ 49.913068] free_event+0x38/0x50 [ 49.916519] perf_event_release_kernel+0x364/0x880 [ 49.921449] ? perf_event_release_kernel+0x880/0x880 [ 49.926552] perf_release+0x37/0x50 [ 49.930185] __fput+0x275/0x7a0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.933461] ____fput+0x16/0x20 [ 49.936736] task_work_run+0x114/0x190 [ 49.940620] do_exit+0x7df/0x2c10 [ 49.944068] ? find_held_lock+0x35/0x130 [ 49.948127] ? mm_update_next_owner+0x5d0/0x5d0 [ 49.952810] do_group_exit+0x111/0x330 [ 49.956692] get_signal+0x381/0x1cd0 [ 49.960404] ? __fd_install+0x236/0x5f0 [ 49.964381] do_signal+0x86/0x19a0 [ 49.967915] ? wait_for_completion+0x420/0x420 [ 49.972496] ? fd_install+0x4d/0x60 [ 49.976123] ? setup_sigcontext+0x7d0/0x7d0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.980441] ? SYSC_perf_event_open+0x61c/0x2690 [ 49.985334] ? find_held_lock+0x35/0x130 [ 49.989383] ? perf_event_set_output+0x460/0x460 [ 49.994245] ? SyS_futex+0x215/0x302 [ 49.997966] ? SyS_futex+0x222/0x302 [ 50.001685] ? exit_to_usermode_loop+0x3d/0x220 [ 50.006355] exit_to_usermode_loop+0x15c/0x220 [ 50.010931] do_syscall_64+0x4bc/0x640 [ 50.014811] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.019673] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 50.024861] RIP: 0033:0x447f19 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 50.028043] RSP: 002b:00007f38b9febcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 50.035751] RAX: fffffffffffffe00 RBX: 00000000006dcc38 RCX: 0000000000447f19 [ 50.043284] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006dcc38 [ 50.050546] RBP: 00000000006dcc30 R08: 0000000000000000 R09: 0000000000000000 [ 50.057809] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc3c [ 50.065089] R13: 00007fff951c638f R14: 00007f38b9fec9c0 R15: 0000000000000001 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program