[ OK ] Started OpenBSD Secure Shell server. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.215' (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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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: [ 63.211147][T10262] ttyprintk ttyprintk: tty_port_close_start: tty->count = 1 port count = 1621 [ 63.220800][ C0] [ 63.220803][ C0] ====================================================== [ 63.220805][ C0] WARNING: possible circular locking dependency detected [ 63.220807][ C0] 5.7.0-rc1-syzkaller #0 Not tainted [ 63.220810][ C0] ------------------------------------------------------ [ 63.220812][ C0] syz-executor853/10262 is trying to acquire lock: [ 63.220814][ C0] ffffffff892e6a30 (console_owner){-.-.}-{0:0}, at: console_lock_spinning_enable+0x2d/0x60 [ 63.220821][ C0] [ 63.220824][ C0] but task is already holding lock: [ 63.220825][ C0] ffffffff8c07fb60 (&port->lock#2){-.-.}-{2:2}, at: tty_port_close_start+0x58/0x550 [ 63.220832][ C0] [ 63.220835][ C0] which lock already depends on the new lock. [ 63.220836][ C0] [ 63.220837][ C0] [ 63.220839][ C0] the existing dependency chain (in reverse order) is: [ 63.220840][ C0] [ 63.220841][ C0] -> #2 (&port->lock#2){-.-.}-{2:2}: [ 63.220849][ C0] lock_acquire+0x169/0x480 [ 63.220851][ C0] _raw_spin_lock_irqsave+0x9e/0xc0 [ 63.220852][ C0] tty_port_tty_get+0x21/0xe0 [ 63.220854][ C0] tty_port_default_wakeup+0x11/0x40 [ 63.220856][ C0] serial8250_tx_chars+0x5ea/0x800 [ 63.220858][ C0] serial8250_handle_irq+0x2fd/0x3e0 [ 63.220861][ C0] serial8250_default_handle_irq+0xac/0x190 [ 63.220862][ C0] serial8250_interrupt+0x93/0x180 executing program executing program [ 63.220864][ C0] __handle_irq_event_percpu+0x1b7/0x610 [ 63.220866][ C0] handle_irq_event+0xbd/0x280 [ 63.220868][ C0] handle_edge_irq+0x245/0xbf0 [ 63.220870][ C0] do_IRQ+0xf6/0x1d0 [ 63.220871][ C0] ret_from_intr+0x0/0x2b [ 63.220873][ C0] _raw_spin_unlock_irqrestore+0xa5/0xd0 [ 63.220875][ C0] uart_write+0x7d3/0x9c0 [ 63.220877][ C0] do_output_char+0x63b/0x940 [ 63.220879][ C0] n_tty_write+0xd5c/0x1170 [ 63.220880][ C0] tty_write+0x593/0x940 [ 63.220882][ C0] do_iter_write+0x402/0x540 [ 63.220884][ C0] do_writev+0x23f/0x4a0 [ 63.220885][ C0] do_syscall_64+0xf3/0x1b0 [ 63.220888][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 63.220889][ C0] [ 63.220890][ C0] -> #1 (&port->lock){-.-.}-{2:2}: [ 63.220896][ C0] lock_acquire+0x169/0x480 [ 63.220898][ C0] _raw_spin_lock_irqsave+0x9e/0xc0 [ 63.220900][ C0] serial8250_console_write+0x13e/0xd50 [ 63.220901][ C0] console_unlock+0x90c/0xec0 executing program executing program executing program [ 63.220903][ C0] vprintk_emit+0x1f8/0x3c0 [ 63.220905][ C0] printk+0x62/0x83 [ 63.220907][ C0] register_console+0xb64/0xed0 [ 63.220908][ C0] univ8250_console_init+0x41/0x43 [ 63.220910][ C0] console_init+0x52/0x97 [ 63.220912][ C0] start_kernel+0x421/0x76f [ 63.220914][ C0] secondary_startup_64+0xa4/0xb0 [ 63.220915][ C0] [ 63.220916][ C0] -> #0 (console_owner){-.-.}-{0:0}: [ 63.220923][ C0] validate_chain+0x1b09/0x8920 executing program [ 63.220924][ C0] __lock_acquire+0x116c/0x2c30 [ 63.220926][ C0] lock_acquire+0x169/0x480 [ 63.220928][ C0] console_lock_spinning_enable+0x52/0x60 [ 63.220930][ C0] console_unlock+0x73f/0xec0 [ 63.220932][ C0] vprintk_emit+0x1f8/0x3c0 [ 63.220933][ C0] printk+0x62/0x83 [ 63.220935][ C0] tty_port_close_start+0x3c8/0x550 [ 63.220937][ C0] tty_port_close+0x25/0x140 [ 63.220939][ C0] tty_release+0x40a/0x1100 [ 63.220940][ C0] __fput+0x2ed/0x750 executing program [ 63.220942][ C0] task_work_run+0x147/0x1d0 [ 63.220944][ C0] do_exit+0x5ef/0x1f80 [ 63.220946][ C0] do_group_exit+0x15e/0x2c0 [ 63.220947][ C0] get_signal+0x13cf/0x1d60 [ 63.220949][ C0] do_signal+0x33/0x610 [ 63.220951][ C0] prepare_exit_to_usermode+0x32a/0x600 [ 63.220953][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 63.220954][ C0] [ 63.220956][ C0] other info that might help us debug this: [ 63.220957][ C0] [ 63.220959][ C0] Chain exists of: executing program [ 63.220960][ C0] console_owner --> &port->lock --> &port->lock#2 [ 63.220968][ C0] [ 63.220970][ C0] Possible unsafe locking scenario: [ 63.220971][ C0] [ 63.220973][ C0] CPU0 CPU1 [ 63.220975][ C0] ---- ---- [ 63.220976][ C0] lock(&port->lock#2); [ 63.220981][ C0] lock(&port->lock); [ 63.220985][ C0] lock(&port->lock#2); [ 63.220989][ C0] lock(console_owner); [ 63.220992][ C0] executing program [ 63.220994][ C0] *** DEADLOCK *** [ 63.220995][ C0] [ 63.220997][ C0] 3 locks held by syz-executor853/10262: [ 63.220998][ C0] #0: ffff888092b081c0 (&tty->legacy_mutex){+.+.}-{3:3}, at: tty_release+0xb3/0x1100 [ 63.221005][ C0] #1: ffffffff8c07fb60 (&port->lock#2){-.-.}-{2:2}, at: tty_port_close_start+0x58/0x550 [ 63.221014][ C0] #2: ffffffff892e6910 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x1db/0x3c0 [ 63.221021][ C0] [ 63.221022][ C0] stack backtrace: executing program executing program [ 63.221025][ C0] CPU: 0 PID: 10262 Comm: syz-executor853 Not tainted 5.7.0-rc1-syzkaller #0 [ 63.221028][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.221029][ C0] Call Trace: [ 63.221031][ C0] dump_stack+0x1e9/0x30e [ 63.221033][ C0] print_circular_bug+0xc72/0xea0 [ 63.221034][ C0] ? stack_trace_save+0xad/0x150 [ 63.221036][ C0] ? save_trace+0x49/0xb60 [ 63.221038][ C0] check_noncircular+0x1fb/0x3a0 [ 63.221039][ C0] validate_chain+0x1b09/0x8920 [ 63.221041][ C0] ? mark_lock+0x102/0x1b00 executing program [ 63.221043][ C0] ? put_dec_trunc8+0x19a/0x290 [ 63.221044][ C0] ? number+0xf14/0x1190 [ 63.221046][ C0] __lock_acquire+0x116c/0x2c30 [ 63.221047][ C0] ? sprintf+0x71/0x90 [ 63.221049][ C0] lock_acquire+0x169/0x480 [ 63.221051][ C0] ? console_lock_spinning_enable+0x2d/0x60 [ 63.221053][ C0] console_lock_spinning_enable+0x52/0x60 [ 63.221055][ C0] ? console_lock_spinning_enable+0x2d/0x60 [ 63.221056][ C0] console_unlock+0x73f/0xec0 [ 63.221059][ C0] ? __down_trylock_console_sem+0x178/0x1b0 [ 63.221060][ C0] ? vprintk_emit+0x1db/0x3c0 [ 63.221062][ C0] ? vprintk_emit+0x1db/0x3c0 [ 63.221063][ C0] vprintk_emit+0x1f8/0x3c0 [ 63.221065][ C0] printk+0x62/0x83 [ 63.221067][ C0] ? _raw_spin_lock_irqsave+0xaa/0xc0 [ 63.221068][ C0] tty_port_close_start+0x3c8/0x550 [ 63.221070][ C0] tty_port_close+0x25/0x140 [ 63.221072][ C0] ? tpk_open+0x60/0x60 [ 63.221073][ C0] tty_release+0x40a/0x1100 [ 63.221075][ C0] ? ima_file_free+0xea/0x3b0 [ 63.221077][ C0] ? tty_release_struct+0xd0/0xd0 executing program executing program [ 63.221078][ C0] __fput+0x2ed/0x750 [ 63.221080][ C0] task_work_run+0x147/0x1d0 [ 63.221081][ C0] do_exit+0x5ef/0x1f80 [ 63.221083][ C0] do_group_exit+0x15e/0x2c0 [ 63.221084][ C0] get_signal+0x13cf/0x1d60 [ 63.221086][ C0] ? _raw_spin_unlock_irqrestore+0xb4/0xd0 [ 63.221088][ C0] ? check_preemption_disabled+0x40/0x240 [ 63.221090][ C0] do_signal+0x33/0x610 [ 63.221091][ C0] ? __se_sys_futex+0x2a7/0x390 [ 63.221093][ C0] ? prepare_exit_to_usermode+0x280/0x600 executing program executing program [ 63.221095][ C0] prepare_exit_to_usermode+0x32a/0x600 [ 63.221097][ C0] ? syscall_return_slowpath+0xf9/0x420 [ 63.221099][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 63.221101][ C0] RIP: 0033:0x446cf9 [ 63.221102][ C0] Code: Bad RIP value. [ 63.221104][ C0] RSP: 002b:00007fe7567aacf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 63.221108][ C0] RAX: fffffffffffffe00 RBX: 00000000006dcc28 RCX: 0000000000446cf9 [ 63.221111][ C0] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006dcc28 executing program executing program executing program [ 63.221113][ C0] RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000 [ 63.221116][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc2c [ 63.221118][ C0] R13: 00007ffc933d653f R14: 00007fe7567ab9c0 R15: 20c49ba5e353f7cf executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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