[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 40.048505] audit: type=1800 audit(1546753297.795:25): pid=7812 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 40.088229] audit: type=1800 audit(1546753297.795:26): pid=7812 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 40.117502] audit: type=1800 audit(1546753297.795:27): pid=7812 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.209' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 386.848759] [ 386.850659] ====================================================== [ 386.856953] WARNING: possible circular locking dependency detected [ 386.863247] 4.20.0+ #11 Not tainted [ 386.866846] ------------------------------------------------------ [ 386.873137] syz-executor400/8644 is trying to acquire lock: [ 386.878839] 000000008d2e159b (&mm->mmap_sem){++++}, at: __do_page_fault+0x9c2/0xd60 [ 386.886815] [ 386.886815] but task is already holding lock: executing program [ 386.892770] 000000006a106cf5 (&sb->s_type->i_mutex_key#12){+.+.}, at: generic_file_write_iter+0xe5/0x6a0 [ 386.902494] [ 386.902494] which lock already depends on the new lock. [ 386.902494] [ 386.910783] [ 386.910783] the existing dependency chain (in reverse order) is: [ 386.918383] [ 386.918383] -> #2 (&sb->s_type->i_mutex_key#12){+.+.}: [ 386.925373] down_write+0x8a/0x130 [ 386.929482] shmem_fallocate+0x168/0x1200 [ 386.934217] ashmem_shrink_scan+0x239/0x630 [ 386.939044] ashmem_ioctl+0x38a/0x12c0 [ 386.943443] compat_ashmem_ioctl+0x53/0x63 executing program [ 386.948246] __ia32_compat_sys_ioctl+0x197/0x620 [ 386.953547] do_fast_syscall_32+0x333/0xf98 [ 386.958377] entry_SYSENTER_compat+0x70/0x7f [ 386.963283] [ 386.963283] -> #1 (ashmem_mutex){+.+.}: [ 386.968726] __mutex_lock+0x12f/0x1670 [ 386.973112] mutex_lock_nested+0x16/0x20 [ 386.977676] ashmem_mmap+0x55/0x520 [ 386.981856] mmap_region+0xde5/0x1ca0 [ 386.986157] do_mmap+0xa09/0x1220 [ 386.990197] vm_mmap_pgoff+0x20b/0x2b0 [ 386.994590] ksys_mmap_pgoff+0x4f8/0x650 executing program [ 386.999150] __ia32_sys_mmap_pgoff+0xdd/0x1a0 [ 387.004147] do_fast_syscall_32+0x333/0xf98 [ 387.009144] entry_SYSENTER_compat+0x70/0x7f [ 387.014161] [ 387.014161] -> #0 (&mm->mmap_sem){++++}: [ 387.019782] lock_acquire+0x1db/0x570 [ 387.024088] down_read+0x8d/0x120 [ 387.028065] __do_page_fault+0x9c2/0xd60 [ 387.032628] do_page_fault+0xe6/0x7d8 [ 387.036950] page_fault+0x1e/0x30 [ 387.041009] iov_iter_fault_in_readable+0x377/0x450 executing program [ 387.046533] generic_perform_write+0x202/0x6b0 [ 387.051616] __generic_file_write_iter+0x25e/0x630 [ 387.057171] generic_file_write_iter+0x34e/0x6a0 [ 387.062521] __vfs_write+0x764/0xb40 [ 387.066739] vfs_write+0x20c/0x580 [ 387.070781] ksys_write+0x105/0x260 [ 387.074923] __ia32_sys_write+0x71/0xb0 [ 387.079504] do_fast_syscall_32+0x333/0xf98 [ 387.084331] entry_SYSENTER_compat+0x70/0x7f [ 387.089404] [ 387.089404] other info that might help us debug this: [ 387.089404] [ 387.097628] Chain exists of: [ 387.097628] &mm->mmap_sem --> ashmem_mutex --> &sb->s_type->i_mutex_key#12 [ 387.097628] [ 387.109233] Possible unsafe locking scenario: [ 387.109233] [ 387.115270] CPU0 CPU1 [ 387.120038] ---- ---- [ 387.124798] lock(&sb->s_type->i_mutex_key#12); [ 387.129536] lock(ashmem_mutex); [ 387.135482] lock(&sb->s_type->i_mutex_key#12); [ 387.142739] lock(&mm->mmap_sem); [ 387.146348] [ 387.146348] *** DEADLOCK *** [ 387.146348] [ 387.152393] 2 locks held by syz-executor400/8644: [ 387.157242] #0: 000000009384c075 (sb_writers#5){.+.+}, at: vfs_write+0x429/0x580 [ 387.164904] #1: 000000006a106cf5 (&sb->s_type->i_mutex_key#12){+.+.}, at: generic_file_write_iter+0xe5/0x6a0 [ 387.175058] [ 387.175058] stack backtrace: [ 387.179538] CPU: 0 PID: 8644 Comm: syz-executor400 Not tainted 4.20.0+ #11 [ 387.186532] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 387.195885] Call Trace: [ 387.198572] dump_stack+0x1db/0x2d0 [ 387.202235] ? dump_stack_print_info.cold+0x20/0x20 [ 387.207336] ? print_stack_trace+0x77/0xb0 [ 387.211644] ? vprintk_func+0x86/0x189 [ 387.215557] print_circular_bug.isra.0.cold+0x1cc/0x28f [ 387.220930] __lock_acquire+0x3014/0x4a30 [ 387.225099] ? mark_held_locks+0x100/0x100 [ 387.229343] ? shmem_getpage_gfp+0x197e/0x4b70 [ 387.234043] ? trace_hardirqs_off_caller+0x300/0x300 [ 387.239155] ? do_raw_spin_trylock+0x270/0x270 [ 387.243764] ? shmem_getpage_gfp+0x26fb/0x4b70 [ 387.248356] ? __lock_is_held+0xb6/0x140 [ 387.252429] lock_acquire+0x1db/0x570 [ 387.256247] ? __do_page_fault+0x9c2/0xd60 [ 387.260591] ? ___might_sleep+0x1e7/0x310 [ 387.264745] ? lock_release+0xc40/0xc40 [ 387.268792] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 387.273818] ? cmp_ex_search+0x8c/0xb0 [ 387.277712] down_read+0x8d/0x120 [ 387.281207] ? __do_page_fault+0x9c2/0xd60 [ 387.285446] ? __down_interruptible+0x740/0x740 [ 387.290119] ? do_writepages+0x1a0/0x1a0 [ 387.294199] ? set_page_dirty+0x5dd/0xfc0 [ 387.298357] __do_page_fault+0x9c2/0xd60 [ 387.302430] do_page_fault+0xe6/0x7d8 [ 387.306230] ? unlock_page+0x2b1/0x4a0 [ 387.310120] ? vmalloc_sync_all+0x30/0x30 [ 387.314269] ? balance_dirty_pages_ratelimited+0x1b0/0x2370 [ 387.319999] ? preempt_schedule+0x4b/0x60 [ 387.324161] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 387.329030] page_fault+0x1e/0x30 [ 387.332493] RIP: 0010:iov_iter_fault_in_readable+0x377/0x450 [ 387.338301] Code: 89 f6 41 88 57 e0 e8 18 ad f3 fd 45 85 f6 74 c1 e9 70 fe ff ff e8 89 ab f3 fd 0f 1f 00 0f ae e8 44 89 f0 48 8b 8d 68 ff ff ff <8a> 11 89 c3 0f 1f 00 41 88 57 d0 31 ff 89 de e8 e5 ac f3 fd 85 db [ 387.357221] RSP: 0018:ffff8880a0bf7878 EFLAGS: 00010293 [ 387.362624] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000020e8623f [ 387.369893] RDX: 0000000000000000 RSI: ffffffff838e4d07 RDI: 0000000000000007 [ 387.377194] RBP: ffff8880a0bf7918 R08: ffff88808c3b81c0 R09: fffff94000496237 [ 387.384472] R10: fffff94000496236 R11: ffffea00024b11b7 R12: 0000000000001000 [ 387.391743] R13: 0000000000001000 R14: 0000000000000000 R15: ffff8880a0bf78f0 [ 387.399035] ? iov_iter_fault_in_readable+0x367/0x450 [ 387.404245] ? iov_iter_fault_in_readable+0x367/0x450 [ 387.409501] ? copy_page_from_iter+0x900/0x900 [ 387.414095] ? shmem_write_begin+0x105/0x1e0 [ 387.418514] ? shmem_write_begin+0x10f/0x1e0 [ 387.422942] generic_perform_write+0x202/0x6b0 [ 387.427533] ? add_page_wait_queue+0x480/0x480 [ 387.432222] ? current_time+0x1b0/0x1b0 [ 387.436237] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 387.441304] ? generic_write_check_limits+0x291/0x380 [ 387.446497] __generic_file_write_iter+0x25e/0x630 [ 387.451429] ? __fget+0x499/0x710 [ 387.454890] generic_file_write_iter+0x34e/0x6a0 [ 387.459645] ? __generic_file_write_iter+0x630/0x630 [ 387.464884] ? kfree+0xcf/0x230 [ 387.468201] ? entry_SYSENTER_compat+0x70/0x7f [ 387.472792] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 387.478338] ? iov_iter_init+0xea/0x220 [ 387.482323] __vfs_write+0x764/0xb40 [ 387.486051] ? kernel_read+0x120/0x120 [ 387.490043] ? rcu_read_lock_sched_held+0x110/0x130 [ 387.495109] ? rcu_sync_lockdep_assert+0x73/0xb0 [ 387.499883] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 387.505493] ? __sb_start_write+0x1ac/0x360 [ 387.509823] vfs_write+0x20c/0x580 [ 387.513383] ksys_write+0x105/0x260 [ 387.517043] ? __ia32_sys_read+0xb0/0xb0 [ 387.521265] ? __x32_compat_sys_get_robust_list+0x3f0/0x3f0 [ 387.527002] ? trace_hardirqs_off_caller+0x300/0x300 [ 387.532120] __ia32_sys_write+0x71/0xb0 [ 387.536110] do_fast_syscall_32+0x333/0xf98 [ 387.540497] ? do_int80_syscall_32+0x880/0x880 [ 387.545088] ? trace_hardirqs_off+0x310/0x310 [ 387.549608] ? syscall_return_slowpath+0x3b0/0x5f0 [ 387.554545] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 387.560091] ? prepare_exit_to_usermode+0x232/0x3b0 [ 387.565119] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 387.569975] entry_SYSENTER_compat+0x70/0x7f [ 387.574383] RIP: 0023:0xf7f73869 [ 387.577754] Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 387.596659] RSP: 002b:00000000f7f6f1dc EFLAGS: 00000246 ORIG_RAX: 0000000000000004 [ 387.604373] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020004240 [ 387.611654] RDX: 00000000fffffe48 RSI: 0000000000000000 RDI: 0000000000000000 [ 387.619057] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 387.626357] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 387.633631] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program