[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.15.196' (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 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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: [ 241.175939][ C0] [ 241.178326][ C0] ======================================================== [ 241.185513][ C0] WARNING: possible irq lock inversion dependency detected [ 241.192819][ C0] 5.6.0-syzkaller #0 Not tainted [ 241.197750][ C0] -------------------------------------------------------- [ 241.204946][ C0] ksoftirqd/0/9 just changed the state of lock: [ 241.211206][ C0] ffffffff898090d8 (tasklist_lock){.+.?}-{2:2}, at: send_sigio+0xa9/0x340 executing program executing program executing program executing program executing program executing program executing program executing program [ 241.219842][ C0] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 241.228079][ C0] (&pid->wait_pidfd){+.+.}-{2:2} [ 241.228090][ C0] [ 241.228090][ C0] [ 241.228090][ C0] and interrupts could create inverse lock ordering between them. [ 241.228090][ C0] [ 241.247406][ C0] [ 241.247406][ C0] other info that might help us debug this: [ 241.255465][ C0] Possible interrupt unsafe locking scenario: [ 241.255465][ C0] [ 241.263795][ C0] CPU0 CPU1 [ 241.269164][ C0] ---- ---- executing program executing program executing program executing program executing program executing program [ 241.274528][ C0] lock(&pid->wait_pidfd); [ 241.279035][ C0] local_irq_disable(); [ 241.285789][ C0] lock(tasklist_lock); [ 241.292549][ C0] lock(&pid->wait_pidfd); [ 241.299575][ C0] [ 241.303034][ C0] lock(tasklist_lock); [ 241.307709][ C0] [ 241.307709][ C0] *** DEADLOCK *** [ 241.307709][ C0] [ 241.315858][ C0] 8 locks held by ksoftirqd/0/9: [ 241.320800][ C0] #0: ffffffff899bb200 (rcu_read_lock){....}-{1:2}, at: process_backlog+0x1ad/0x7a0 [ 241.330407][ C0] #1: ffffffff899bb200 (rcu_read_lock){....}-{1:2}, at: ip_local_deliver_finish+0x124/0x360 [ 241.340669][ C0] #2: ffff88808e1750e0 (slock-AF_INET/1){+.-.}-{2:2}, at: tcp_v4_rcv+0x2d09/0x39c0 [ 241.350116][ C0] #3: ffffffff899bb200 (rcu_read_lock){....}-{1:2}, at: sock_def_error_report+0x0/0x4d0 [ 241.360027][ C0] #4: ffffffff899bb200 (rcu_read_lock){....}-{1:2}, at: sock_def_error_report+0x1d6/0x4d0 [ 241.370130][ C0] #5: ffffffff899bb200 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x3d/0x470 [ 241.379165][ C0] #6: ffff8880a41312b8 (&new->fa_lock){.+.?}-{2:2}, at: kill_fasync+0x162/0x470 [ 241.388289][ C0] #7: ffff8880a5d263f8 (&f->f_owner.lock){.+.?}-{2:2}, at: send_sigio+0x24/0x340 [ 241.397542][ C0] [ 241.397542][ C0] the shortest dependencies between 2nd lock and 1st lock: [ 241.407037][ C0] -> (&pid->wait_pidfd){+.+.}-{2:2} { [ 241.412767][ C0] HARDIRQ-ON-W at: [ 241.417004][ C0] lock_acquire+0x1f2/0x8f0 [ 241.423437][ C0] _raw_spin_lock+0x2a/0x40 [ 241.429852][ C0] proc_pid_make_inode+0x1f9/0x3c0 [ 241.436801][ C0] proc_pid_instantiate+0x51/0x150 [ 241.443744][ C0] proc_pid_lookup+0x1da/0x340 [ 241.450338][ C0] proc_root_lookup+0x20/0x60 [ 241.456934][ C0] __lookup_slow+0x256/0x490 [ 241.463457][ C0] walk_component+0x418/0x6a0 [ 241.469978][ C0] link_path_walk.part.0+0x4f1/0xb50 [ 241.477196][ C0] path_openat+0x25a/0x27b0 [ 241.483678][ C0] do_filp_open+0x203/0x260 [ 241.490073][ C0] do_sys_openat2+0x585/0x770 [ 241.496591][ C0] do_sys_open+0xc3/0x140 [ 241.502801][ C0] do_syscall_64+0xf6/0x7d0 [ 241.509377][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 241.517178][ C0] SOFTIRQ-ON-W at: [ 241.521235][ C0] lock_acquire+0x1f2/0x8f0 [ 241.527549][ C0] _raw_spin_lock+0x2a/0x40 [ 241.533884][ C0] proc_pid_make_inode+0x1f9/0x3c0 [ 241.540830][ C0] proc_pid_instantiate+0x51/0x150 [ 241.547741][ C0] proc_pid_lookup+0x1da/0x340 [ 241.554303][ C0] proc_root_lookup+0x20/0x60 [ 241.560783][ C0] __lookup_slow+0x256/0x490 [ 241.567342][ C0] walk_component+0x418/0x6a0 [ 241.574117][ C0] link_path_walk.part.0+0x4f1/0xb50 [ 241.581226][ C0] path_openat+0x25a/0x27b0 [ 241.587571][ C0] do_filp_open+0x203/0x260 [ 241.593886][ C0] do_sys_openat2+0x585/0x770 [ 241.600367][ C0] do_sys_open+0xc3/0x140 [ 241.606499][ C0] do_syscall_64+0xf6/0x7d0 [ 241.612818][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 241.620504][ C0] INITIAL USE at: [ 241.624462][ C0] lock_acquire+0x1f2/0x8f0 [ 241.630679][ C0] _raw_spin_lock_irqsave+0x8c/0xbf [ 241.637658][ C0] __wake_up_common_lock+0xb4/0x130 [ 241.644604][ C0] do_notify_parent+0x19e/0xe60 [ 241.651201][ C0] do_exit+0x238f/0x2dd0 [ 241.657188][ C0] call_usermodehelper_exec_async+0x507/0x710 [ 241.664972][ C0] ret_from_fork+0x24/0x30 [ 241.671183][ C0] } [ 241.673791][ C0] ... key at: [] __key.53746+0x0/0x40 [ 241.681320][ C0] ... acquired at: [ 241.685219][ C0] _raw_spin_lock_irqsave+0x8c/0xbf [ 241.690576][ C0] __wake_up_common_lock+0xb4/0x130 [ 241.695955][ C0] do_notify_parent+0x19e/0xe60 [ 241.701120][ C0] do_exit+0x238f/0x2dd0 [ 241.705657][ C0] call_usermodehelper_exec_async+0x507/0x710 [ 241.711930][ C0] ret_from_fork+0x24/0x30 [ 241.716496][ C0] [ 241.718802][ C0] -> (tasklist_lock){.+.?}-{2:2} { [ 241.724028][ C0] HARDIRQ-ON-R at: [ 241.728007][ C0] lock_acquire+0x1f2/0x8f0 [ 241.734183][ C0] _raw_read_lock+0x2d/0x40 [ 241.740921][ C0] do_wait+0x3b9/0xa00 [ 241.746624][ C0] kernel_wait4+0x14c/0x260 [ 241.753367][ C0] call_usermodehelper_exec_work+0x172/0x260 [ 241.761256][ C0] process_one_work+0x965/0x16a0 [ 241.767836][ C0] worker_thread+0x96/0xe20 [ 241.774048][ C0] kthread+0x388/0x470 [ 241.779761][ C0] ret_from_fork+0x24/0x30 [ 241.785821][ C0] IN-SOFTIRQ-R at: [ 241.789786][ C0] lock_acquire+0x1f2/0x8f0 [ 241.795919][ C0] _raw_read_lock+0x2d/0x40 [ 241.802050][ C0] send_sigio+0xa9/0x340 [ 241.807916][ C0] kill_fasync+0x21c/0x470 [ 241.813991][ C0] sock_wake_async+0xd2/0x160 [ 241.820990][ C0] sock_def_error_report+0x2d7/0x4d0 [ 241.827900][ C0] tcp_reset+0x195/0x4e0 [ 241.833767][ C0] tcp_rcv_state_process+0x2ead/0x4c80 [ 241.840849][ C0] tcp_v4_do_rcv+0x34c/0x8b0 [ 241.847076][ C0] tcp_v4_rcv+0x2f60/0x39c0 [ 241.853219][ C0] ip_protocol_deliver_rcu+0x57/0x880 [ 241.860323][ C0] ip_local_deliver_finish+0x220/0x360 [ 241.867407][ C0] ip_local_deliver+0x1c8/0x4e0 [ 241.873980][ C0] ip_rcv_finish+0x1da/0x2f0 [ 241.880197][ C0] ip_rcv+0xd0/0x3c0 [ 241.885728][ C0] __netif_receive_skb_one_core+0xf5/0x160 [ 241.893265][ C0] __netif_receive_skb+0x27/0x1c0 [ 241.900002][ C0] process_backlog+0x21e/0x7a0 [ 241.906396][ C0] net_rx_action+0x4c2/0x1070 [ 241.912710][ C0] __do_softirq+0x26c/0x9f7 [ 241.918852][ C0] run_ksoftirqd+0x89/0x100 [ 241.924992][ C0] smpboot_thread_fn+0x653/0x9e0 [ 241.931576][ C0] kthread+0x388/0x470 [ 241.937269][ C0] ret_from_fork+0x24/0x30 [ 241.943305][ C0] SOFTIRQ-ON-R at: [ 241.947279][ C0] lock_acquire+0x1f2/0x8f0 [ 241.953443][ C0] _raw_read_lock+0x2d/0x40 [ 241.959570][ C0] do_wait+0x3b9/0xa00 [ 241.965278][ C0] kernel_wait4+0x14c/0x260 [ 241.971494][ C0] call_usermodehelper_exec_work+0x172/0x260 [ 241.979182][ C0] process_one_work+0x965/0x16a0 [ 241.986021][ C0] worker_thread+0x96/0xe20 [ 241.992165][ C0] kthread+0x388/0x470 [ 241.997890][ C0] ret_from_fork+0x24/0x30 [ 242.003994][ C0] INITIAL USE at: [ 242.007883][ C0] lock_acquire+0x1f2/0x8f0 [ 242.013987][ C0] _raw_write_lock_irq+0x5b/0x80 [ 242.020522][ C0] copy_process+0x3430/0x72c0 [ 242.026742][ C0] _do_fork+0x12d/0x1010 [ 242.032566][ C0] kernel_thread+0xb1/0xf0 [ 242.038529][ C0] rest_init+0x23/0x365 [ 242.044331][ C0] start_kernel+0x867/0x8a1 [ 242.050713][ C0] secondary_startup_64+0xa4/0xb0 [ 242.057455][ C0] } [ 242.060068][ C0] ... key at: [] tasklist_lock+0x18/0x40 [ 242.067861][ C0] ... acquired at: [ 242.071664][ C0] mark_lock+0x624/0xf10 [ 242.076058][ C0] __lock_acquire+0x1ed9/0x4e00 [ 242.081074][ C0] lock_acquire+0x1f2/0x8f0 [ 242.085735][ C0] _raw_read_lock+0x2d/0x40 [ 242.090413][ C0] send_sigio+0xa9/0x340 [ 242.094803][ C0] kill_fasync+0x21c/0x470 [ 242.099386][ C0] sock_wake_async+0xd2/0x160 [ 242.104364][ C0] sock_def_error_report+0x2d7/0x4d0 [ 242.109989][ C0] tcp_reset+0x195/0x4e0 [ 242.114509][ C0] tcp_rcv_state_process+0x2ead/0x4c80 [ 242.120143][ C0] tcp_v4_do_rcv+0x34c/0x8b0 [ 242.124900][ C0] tcp_v4_rcv+0x2f60/0x39c0 [ 242.129555][ C0] ip_protocol_deliver_rcu+0x57/0x880 [ 242.135082][ C0] ip_local_deliver_finish+0x220/0x360 [ 242.140688][ C0] ip_local_deliver+0x1c8/0x4e0 [ 242.145686][ C0] ip_rcv_finish+0x1da/0x2f0 [ 242.150538][ C0] ip_rcv+0xd0/0x3c0 [ 242.154843][ C0] __netif_receive_skb_one_core+0xf5/0x160 [ 242.160811][ C0] __netif_receive_skb+0x27/0x1c0 [ 242.165997][ C0] process_backlog+0x21e/0x7a0 [ 242.170997][ C0] net_rx_action+0x4c2/0x1070 [ 242.175823][ C0] __do_softirq+0x26c/0x9f7 [ 242.180492][ C0] run_ksoftirqd+0x89/0x100 [ 242.185146][ C0] smpboot_thread_fn+0x653/0x9e0 [ 242.190239][ C0] kthread+0x388/0x470 [ 242.194456][ C0] ret_from_fork+0x24/0x30 [ 242.199027][ C0] [ 242.201328][ C0] [ 242.201328][ C0] stack backtrace: [ 242.207196][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.6.0-syzkaller #0 [ 242.214885][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 242.225037][ C0] Call Trace: [ 242.228433][ C0] dump_stack+0x188/0x20d [ 242.232937][ C0] check_usage_forwards.cold+0x20/0x29 [ 242.238375][ C0] ? check_usage_backwards+0x4e0/0x4e0 [ 242.243914][ C0] ? stack_trace_save+0x8c/0xc0 [ 242.248832][ C0] ? stack_trace_consume_entry+0x160/0x160 [ 242.254730][ C0] ? __bfs+0x76/0x520 [ 242.258715][ C0] ? save_trace+0x42/0x9f0 [ 242.263424][ C0] mark_lock+0x624/0xf10 [ 242.267664][ C0] ? check_usage_backwards+0x4e0/0x4e0 [ 242.273150][ C0] ? print_usage_bug+0x240/0x240 [ 242.278100][ C0] __lock_acquire+0x1ed9/0x4e00 [ 242.282944][ C0] ? mark_held_locks+0xe0/0xe0 [ 242.287699][ C0] ? mark_held_locks+0xe0/0xe0 [ 242.292449][ C0] ? mark_held_locks+0xe0/0xe0 [ 242.297205][ C0] lock_acquire+0x1f2/0x8f0 [ 242.301683][ C0] ? send_sigio+0xa9/0x340 [ 242.306077][ C0] ? lock_release+0x800/0x800 [ 242.310738][ C0] ? lock_release+0x800/0x800 [ 242.315393][ C0] _raw_read_lock+0x2d/0x40 [ 242.319874][ C0] ? send_sigio+0xa9/0x340 [ 242.324266][ C0] send_sigio+0xa9/0x340 [ 242.328582][ C0] kill_fasync+0x21c/0x470 [ 242.333408][ C0] sock_wake_async+0xd2/0x160 [ 242.338071][ C0] sock_def_error_report+0x2d7/0x4d0 [ 242.343338][ C0] tcp_reset+0x195/0x4e0 [ 242.347609][ C0] tcp_rcv_state_process+0x2ead/0x4c80 [ 242.353464][ C0] ? tcp_finish_connect+0x500/0x500 [ 242.358729][ C0] ? nf_conntrack_free+0x97/0xe0 [ 242.363696][ C0] ? do_raw_spin_lock+0x129/0x2e0 [ 242.368700][ C0] ? tcp_v4_do_rcv+0x34c/0x8b0 [ 242.373462][ C0] tcp_v4_do_rcv+0x34c/0x8b0 [ 242.378055][ C0] tcp_v4_rcv+0x2f60/0x39c0 [ 242.382552][ C0] ? tcp_v4_early_demux+0x8d0/0x8d0 [ 242.387910][ C0] ? rcu_read_lock_held+0x9c/0xb0 [ 242.393180][ C0] ? rcu_read_lock_held_common+0x130/0x130 [ 242.398973][ C0] ip_protocol_deliver_rcu+0x57/0x880 [ 242.404322][ C0] ip_local_deliver_finish+0x220/0x360 [ 242.409763][ C0] ip_local_deliver+0x1c8/0x4e0 [ 242.414762][ C0] ? ip_local_deliver_finish+0x360/0x360 [ 242.420411][ C0] ? ip_rcv+0x24e/0x3c0 [ 242.424571][ C0] ? ip_protocol_deliver_rcu+0x880/0x880 [ 242.430187][ C0] ? lock_downgrade+0x840/0x840 [ 242.435131][ C0] ? ip_rcv_finish_core.isra.0+0x606/0x1ec0 [ 242.441626][ C0] ip_rcv_finish+0x1da/0x2f0 [ 242.446200][ C0] ip_rcv+0xd0/0x3c0 [ 242.450190][ C0] ? ip_local_deliver+0x4e0/0x4e0 [ 242.455208][ C0] ? ip_rcv_finish_core.isra.0+0x1ec0/0x1ec0 [ 242.461177][ C0] ? lock_acquire+0x1f2/0x8f0 [ 242.465827][ C0] ? process_backlog+0x1ad/0x7a0 [ 242.470742][ C0] ? ip_local_deliver+0x4e0/0x4e0 [ 242.475745][ C0] __netif_receive_skb_one_core+0xf5/0x160 [ 242.481664][ C0] ? __netif_receive_skb_core+0x30e0/0x30e0 [ 242.487553][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 242.492484][ C0] __netif_receive_skb+0x27/0x1c0 [ 242.497502][ C0] process_backlog+0x21e/0x7a0 [ 242.502240][ C0] ? net_rx_action+0x25f/0x1070 [ 242.507067][ C0] net_rx_action+0x4c2/0x1070 [ 242.511719][ C0] ? napi_busy_loop+0x950/0x950 [ 242.516823][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 242.522813][ C0] __do_softirq+0x26c/0x9f7 [ 242.527321][ C0] ? takeover_tasklets+0x810/0x810 [ 242.532857][ C0] run_ksoftirqd+0x89/0x100 [ 242.537442][ C0] smpboot_thread_fn+0x653/0x9e0 [ 242.543611][ C0] ? __smpboot_create_thread.part.0+0x340/0x340 [ 242.549832][ C0] ? __kthread_parkme+0x13f/0x1e0 [ 242.554855][ C0] ? __smpboot_create_thread.part.0+0x340/0x340 [ 242.561087][ C0] kthread+0x388/0x470 [ 242.565238][ C0] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 242.570973][ C0] ret_from_fork+0x24/0x30 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program