[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 30.729719] random: sshd: uninitialized urandom read (32 bytes read) [ 30.967925] kauditd_printk_skb: 9 callbacks suppressed [ 30.967934] audit: type=1400 audit(1571687031.064:35): avc: denied { map } for pid=6867 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 [ 31.010498] random: sshd: uninitialized urandom read (32 bytes read) [ 31.596904] random: sshd: uninitialized urandom read (32 bytes read) [ 47.152064] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.234' (ECDSA) to the list of known hosts. [ 56.214871] 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 [ 56.334345] audit: type=1400 audit(1571687056.434:36): avc: denied { map } for pid=6881 comm="syz-executor922" path="/root/syz-executor922102549" 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 [ 61.048651] [ 61.050332] ====================================================== [ 61.056642] WARNING: possible circular locking dependency detected [ 61.062958] 4.14.150 #0 Not tainted [ 61.066592] ------------------------------------------------------ [ 61.072922] syz-executor922/8158 is trying to acquire lock: [ 61.078641] (event_mutex){+.+.}, at: [] perf_trace_destroy+0x28/0x100 [ 61.086901] [ 61.086901] 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 [ 61.092874] (&event->child_mutex){+.+.}, at: [] perf_event_release_kernel+0x207/0x880 [ 61.102507] [ 61.102507] which lock already depends on the new lock. [ 61.102507] [ 61.110818] [ 61.110818] the existing dependency chain (in reverse order) is: [ 61.118434] [ 61.118434] -> #5 (&event->child_mutex){+.+.}: [ 61.124518] lock_acquire+0x16f/0x430 [ 61.128865] __mutex_lock+0xe8/0x1470 [ 61.133192] mutex_lock_nested+0x16/0x20 [ 61.137787] perf_event_for_each_child+0x8a/0x150 [ 61.143433] 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 [ 61.147590] do_vfs_ioctl+0x7ae/0x1060 [ 61.152009] SyS_ioctl+0x8f/0xc0 [ 61.155943] do_syscall_64+0x1e8/0x640 [ 61.160366] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 61.166270] [ 61.166270] -> #4 (&cpuctx_mutex){+.+.}: [ 61.171829] lock_acquire+0x16f/0x430 [ 61.176253] __mutex_lock+0xe8/0x1470 [ 61.180590] mutex_lock_nested+0x16/0x20 [ 61.185188] perf_event_init_cpu+0xc2/0x170 [ 61.190153] perf_event_init+0x2d8/0x31a [ 61.194852] 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 [ 61.199183] x86_64_start_reservations+0x29/0x2b [ 61.204499] x86_64_start_kernel+0x77/0x7b [ 61.209263] secondary_startup_64+0xa5/0xb0 [ 61.214130] [ 61.214130] -> #3 (pmus_lock){+.+.}: [ 61.219343] lock_acquire+0x16f/0x430 [ 61.223720] __mutex_lock+0xe8/0x1470 [ 61.228057] mutex_lock_nested+0x16/0x20 [ 61.232732] perf_event_init_cpu+0x2f/0x170 [ 61.237585] cpuhp_invoke_callback+0x1ea/0x1ab0 [ 61.242787] _cpu_up+0x228/0x530 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.246691] do_cpu_up+0x121/0x150 [ 61.250770] cpu_up+0x1b/0x20 [ 61.254427] smp_init+0x157/0x170 [ 61.258415] kernel_init_freeable+0x30b/0x532 [ 61.263642] kernel_init+0x12/0x162 [ 61.267809] ret_from_fork+0x24/0x30 [ 61.272047] [ 61.272047] -> #2 (cpu_hotplug_lock.rw_sem){++++}: [ 61.278483] lock_acquire+0x16f/0x430 [ 61.282813] cpus_read_lock+0x3d/0xc0 [ 61.287158] static_key_slow_inc+0x13/0x30 [ 61.291921] 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 [ 61.297810] tracepoint_probe_register+0x2b/0x40 [ 61.303091] trace_event_reg+0x277/0x330 [ 61.307940] perf_trace_init+0x449/0xaa0 [ 61.312526] perf_tp_event_init+0x7d/0xf0 [ 61.317226] perf_try_init_event+0x164/0x200 [ 61.322166] perf_event_alloc.part.0+0xd90/0x25b0 [ 61.327538] SYSC_perf_event_open+0xad1/0x2690 [ 61.332656] SyS_perf_event_open+0x34/0x40 [ 61.337423] do_syscall_64+0x1e8/0x640 [ 61.341855] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 61.347560] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.347560] -> #1 (tracepoints_mutex){+.+.}: [ 61.353475] lock_acquire+0x16f/0x430 [ 61.357800] __mutex_lock+0xe8/0x1470 [ 61.362238] mutex_lock_nested+0x16/0x20 [ 61.366826] tracepoint_probe_register_prio+0x36/0x6d0 [ 61.372637] tracepoint_probe_register+0x2b/0x40 [ 61.377930] trace_event_reg+0x277/0x330 [ 61.382525] perf_trace_init+0x449/0xaa0 [ 61.387116] perf_tp_event_init+0x7d/0xf0 [ 61.391791] perf_try_init_event+0x164/0x200 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.396757] perf_event_alloc.part.0+0xd90/0x25b0 [ 61.402131] SYSC_perf_event_open+0xad1/0x2690 [ 61.407249] SyS_perf_event_open+0x34/0x40 [ 61.412019] do_syscall_64+0x1e8/0x640 [ 61.416633] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 61.422346] [ 61.422346] -> #0 (event_mutex){+.+.}: [ 61.427729] __lock_acquire+0x2cb3/0x4620 [ 61.432452] lock_acquire+0x16f/0x430 [ 61.436809] __mutex_lock+0xe8/0x1470 [ 61.441134] mutex_lock_nested+0x16/0x20 [ 61.445732] 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 [ 61.450514] tp_perf_event_destroy+0x16/0x20 [ 61.455461] _free_event+0x330/0xe70 [ 61.459712] free_event+0x38/0x50 [ 61.463692] perf_event_release_kernel+0x364/0x880 [ 61.469193] perf_release+0x37/0x50 [ 61.473388] __fput+0x275/0x7a0 [ 61.477224] ____fput+0x16/0x20 [ 61.481037] task_work_run+0x114/0x190 [ 61.485474] do_exit+0x7df/0x2c10 [ 61.489461] do_group_exit+0x111/0x330 [ 61.493875] get_signal+0x381/0x1cd0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.498117] do_signal+0x86/0x19a0 [ 61.502189] exit_to_usermode_loop+0x15c/0x220 [ 61.507310] do_syscall_64+0x4bc/0x640 [ 61.511985] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 61.517693] [ 61.517693] other info that might help us debug this: [ 61.517693] [ 61.525835] Chain exists of: [ 61.525835] event_mutex --> &cpuctx_mutex --> &event->child_mutex [ 61.525835] [ 61.536690] Possible unsafe locking scenario: [ 61.536690] [ 61.542753] CPU0 CPU1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.547419] ---- ---- [ 61.552092] lock(&event->child_mutex); [ 61.556151] lock(&cpuctx_mutex); [ 61.562216] lock(&event->child_mutex); [ 61.568796] lock(event_mutex); [ 61.572159] [ 61.572159] *** DEADLOCK *** [ 61.572159] [ 61.578218] 2 locks held by syz-executor922/8158: [ 61.583057] #0: (&ctx->mutex){+.+.}, at: [] perf_event_release_kernel+0x1fd/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 [ 61.592777] #1: (&event->child_mutex){+.+.}, at: [] perf_event_release_kernel+0x207/0x880 [ 61.602845] [ 61.602845] stack backtrace: [ 61.607342] CPU: 1 PID: 8158 Comm: syz-executor922 Not tainted 4.14.150 #0 [ 61.614350] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.623724] Call Trace: [ 61.626319] dump_stack+0x138/0x197 [ 61.629966] print_circular_bug.isra.0.cold+0x1cc/0x28f [ 61.635340] __lock_acquire+0x2cb3/0x4620 [ 61.639491] ? event_function+0x28b/0x380 [ 61.643646] ? trace_hardirqs_on+0x10/0x10 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.647891] lock_acquire+0x16f/0x430 [ 61.651699] ? perf_trace_destroy+0x28/0x100 [ 61.656115] ? perf_trace_destroy+0x28/0x100 [ 61.660536] __mutex_lock+0xe8/0x1470 [ 61.664345] ? perf_trace_destroy+0x28/0x100 [ 61.668757] ? perf_trace_destroy+0x28/0x100 [ 61.673167] ? alloc_perf_context+0xf0/0xf0 [ 61.677490] ? mutex_trylock+0x1c0/0x1c0 [ 61.681582] ? save_trace+0x290/0x290 [ 61.685385] ? __mutex_lock+0x36a/0x1470 [ 61.689453] ? perf_event_release_kernel+0x1f3/0x880 [ 61.694561] ? __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 [ 61.698656] ? check_preemption_disabled+0x3c/0x250 [ 61.703706] mutex_lock_nested+0x16/0x20 [ 61.707781] ? mutex_lock_nested+0x16/0x20 [ 61.712063] perf_trace_destroy+0x28/0x100 [ 61.716339] tp_perf_event_destroy+0x16/0x20 [ 61.720755] ? perf_tp_event_init+0xf0/0xf0 [ 61.725109] _free_event+0x330/0xe70 [ 61.728830] free_event+0x38/0x50 [ 61.732301] perf_event_release_kernel+0x364/0x880 [ 61.737248] ? perf_event_release_kernel+0x880/0x880 [ 61.742358] perf_release+0x37/0x50 [ 61.745990] __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 [ 61.749276] ____fput+0x16/0x20 [ 61.752568] task_work_run+0x114/0x190 [ 61.756468] do_exit+0x7df/0x2c10 [ 61.760028] ? find_held_lock+0x35/0x130 [ 61.764105] ? mm_update_next_owner+0x5d0/0x5d0 [ 61.768814] do_group_exit+0x111/0x330 [ 61.772716] get_signal+0x381/0x1cd0 [ 61.776556] ? __fd_install+0x236/0x5f0 [ 61.780550] do_signal+0x86/0x19a0 [ 61.784104] ? wait_for_completion+0x420/0x420 [ 61.788702] ? fd_install+0x4d/0x60 [ 61.792338] ? setup_sigcontext+0x7d0/0x7d0 [ 61.796669] ? SYSC_perf_event_open+0x61c/0x2690 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.801462] ? find_held_lock+0x35/0x130 [ 61.805546] ? perf_event_set_output+0x460/0x460 [ 61.810369] ? SyS_futex+0x215/0x302 [ 61.814132] ? SyS_futex+0x222/0x302 [ 61.817864] ? exit_to_usermode_loop+0x3d/0x220 [ 61.822581] exit_to_usermode_loop+0x15c/0x220 [ 61.827270] do_syscall_64+0x4bc/0x640 [ 61.831164] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 61.836018] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 61.841215] RIP: 0033:0x446969 [ 61.844508] RSP: 002b:00007fbdbacacdb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.852230] RAX: fffffffffffffe00 RBX: 00000000006dbc38 RCX: 0000000000446969 [ 61.859506] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006dbc38 [ 61.866779] RBP: 00000000006dbc30 R08: 0000000000000000 R09: 0000000000000000 [ 61.874085] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc3c [ 61.881365] R13: 00007ffe9b26cfcf R14: 00007fbdbacad9c0 R15: 000000000000002d executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program