[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 18.203887] audit: type=1400 audit(1519211286.114:6): avc: denied { map } for pid=4160 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.45' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 syzkaller login: [ 49.865629] audit: type=1400 audit(1519211317.776:7): avc: denied { map } for pid=4178 comm="syzkaller420029" path="/root/syzkaller420029420" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 50.094688] ip (4244) used greatest stack depth: 16944 bytes left [ 50.124955] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument executing program [ 50.442238] [ 50.443884] ===================================== [ 50.448699] WARNING: bad unlock balance detected! [ 50.453509] 4.16.0-rc2+ #235 Not tainted [ 50.457536] ------------------------------------- [ 50.462352] syzkaller420029/4178 is trying to release lock (rcu_read_lock_bh) at: [ 50.469950] [] hashlimit_mt_common.isra.10+0x1beb/0x2610 [ 50.476926] but there are no more locks to release! [ 50.481915] [ 50.481915] other info that might help us debug this: [ 50.488808] 4 locks held by syzkaller420029/4178: [ 50.493622] #0: (&mm->mmap_sem){++++}, at: [<0000000081520212>] __do_page_fault+0x32d/0xc90 [ 50.502272] #1: ((&idev->mc_ifc_timer)){+.-.}, at: [<00000000df4a8ee8>] call_timer_fn+0x1c6/0x820 [ 50.511430] #2: (rcu_read_lock){....}, at: [<00000000c630f099>] mld_sendpack+0x180/0xe70 [ 50.519808] #3: (rcu_read_lock){....}, at: [<0000000074167d70>] nf_hook.constprop.37+0x0/0x830 [ 50.528704] [ 50.528704] stack backtrace: [ 50.533169] CPU: 1 PID: 4178 Comm: syzkaller420029 Not tainted 4.16.0-rc2+ #235 [ 50.540580] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.549902] Call Trace: [ 50.552453] [ 50.554585] dump_stack+0x194/0x257 [ 50.558187] ? arch_local_irq_restore+0x53/0x53 [ 50.562827] ? hashlimit_mt_common.isra.10+0x1beb/0x2610 [ 50.568266] print_unlock_imbalance_bug+0x12f/0x140 [ 50.573252] lock_release+0x6fe/0xa40 [ 50.577022] ? hashlimit_mt_common.isra.10+0x1beb/0x2610 [ 50.582454] ? lock_downgrade+0x980/0x980 [ 50.586569] ? lock_release+0xa40/0xa40 [ 50.590510] ? __raw_spin_lock_init+0x1c/0x100 [ 50.595063] ? do_raw_spin_trylock+0x190/0x190 [ 50.599625] hashlimit_mt_common.isra.10+0x1c08/0x2610 [ 50.604871] ? lock_downgrade+0x980/0x980 [ 50.608986] ? dsthash_find+0x5b0/0x5b0 [ 50.612928] ? __lock_acquire+0x664/0x3e00 [ 50.617132] ? is_bpf_text_address+0x7b/0x120 [ 50.621596] ? lock_downgrade+0x95a/0x980 [ 50.625718] ? rcutorture_record_progress+0x10/0x10 [ 50.630706] ? __kernel_text_address+0xd/0x40 [ 50.635258] ? unwind_get_return_address+0x61/0xa0 [ 50.640155] hashlimit_mt+0x78/0x90 [ 50.643749] ? hashlimit_mt+0x78/0x90 [ 50.647519] ip6t_do_table+0x98d/0x1a30 [ 50.651468] ? kmem_cache_alloc_trace+0x136/0x740 [ 50.656442] ? mld_sendpack+0x617/0xe70 [ 50.660392] ? ip6t_error+0x60/0x60 [ 50.663988] ? check_noncircular+0x20/0x20 [ 50.668189] ? lock_acquire+0x1d5/0x580 [ 50.672129] ? lock_acquire+0x1d5/0x580 [ 50.676073] ? igmp6_mcf_seq_next+0x660/0x660 [ 50.680536] ? lock_release+0xa40/0xa40 [ 50.684478] ip6table_raw_hook+0x65/0x80 [ 50.688516] nf_hook_slow+0xba/0x1a0 [ 50.692203] nf_hook.constprop.37+0x3f6/0x830 [ 50.696671] ? igmp6_mcf_seq_next+0x660/0x660 [ 50.701137] ? trace_hardirqs_on+0xd/0x10 [ 50.705253] ? __local_bh_enable_ip+0x121/0x230 [ 50.709890] ? _raw_spin_unlock_bh+0x30/0x40 [ 50.714269] ? rt6_uncached_list_add+0x1b7/0x240 [ 50.718996] ? rt6_fill_node+0x18b0/0x18b0 [ 50.723208] ? icmp6_dst_alloc+0x475/0x660 [ 50.727412] ? ip6_mc_leave_src+0x1d0/0x1d0 [ 50.731702] ? icmpv6_flow_init+0x1f6/0x270 [ 50.735998] mld_sendpack+0x6c2/0xe70 [ 50.739864] ? nf_hook.constprop.37+0x830/0x830 [ 50.744502] ? mark_held_locks+0xaf/0x100 [ 50.748621] ? trace_hardirqs_on+0xd/0x10 [ 50.752739] ? __local_bh_enable_ip+0x121/0x230 [ 50.757375] mld_ifc_timer_expire+0x3d9/0x770 [ 50.761926] call_timer_fn+0x228/0x820 [ 50.765782] ? mld_dad_timer_expire+0x100/0x100 [ 50.770421] ? process_timeout+0x40/0x40 [ 50.774462] ? __run_timers+0x7e3/0xb70 [ 50.778405] ? lock_downgrade+0x980/0x980 [ 50.782524] ? debug_object_deactivate+0x364/0x560 [ 50.787420] ? lock_release+0xa40/0xa40 [ 50.791362] ? mark_held_locks+0xaf/0x100 [ 50.795480] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 50.800472] ? mld_dad_timer_expire+0x100/0x100 [ 50.805107] ? mld_dad_timer_expire+0x100/0x100 [ 50.809749] __run_timers+0x7ee/0xb70 [ 50.813523] ? trigger_dyntick_cpu.isra.29+0x150/0x150 [ 50.818771] ? timerqueue_add+0x1e9/0x280 [ 50.822886] ? check_noncircular+0x20/0x20 [ 50.827102] ? enqueue_hrtimer+0x177/0x4b0 [ 50.831303] ? lock_release+0xa40/0xa40 [ 50.835245] ? retrigger_next_event+0x1e0/0x1e0 [ 50.839885] ? print_irqtrace_events+0x270/0x270 [ 50.844610] ? check_noncircular+0x20/0x20 [ 50.848815] ? clockevents_program_event+0x163/0x2e0 [ 50.853895] ? lock_downgrade+0x980/0x980 [ 50.858015] ? __lock_is_held+0xb6/0x140 [ 50.862050] run_timer_softirq+0x4c/0x70 [ 50.866079] __do_softirq+0x2d7/0xb85 [ 50.869846] ? ktime_get+0x26f/0x3a0 [ 50.873529] ? __irqentry_text_end+0x1f8ad4/0x1f8ad4 [ 50.878606] ? check_noncircular+0x20/0x20 [ 50.882810] ? native_apic_msr_write+0x5c/0x80 [ 50.887359] ? lapic_next_event+0x54/0x80 [ 50.891476] ? clockevents_program_event+0x108/0x2e0 [ 50.896545] ? tick_program_event+0x83/0x100 [ 50.900924] ? __lock_is_held+0xb6/0x140 [ 50.904957] irq_exit+0x1cc/0x200 [ 50.908380] smp_apic_timer_interrupt+0x16b/0x700 [ 50.913197] ? smp_reschedule_interrupt+0xe6/0x650 [ 50.918093] ? smp_call_function_single_interrupt+0x640/0x640 [ 50.923945] ? _raw_spin_lock+0x32/0x40 [ 50.927887] ? _raw_spin_unlock+0x22/0x30 [ 50.932003] ? handle_edge_irq+0x2b4/0x7c0 [ 50.936207] ? task_prio+0x50/0x50 [ 50.939726] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.944553] apic_timer_interrupt+0x8e/0xa0 [ 50.948843] [ 50.951052] RIP: 0010:memset_erms+0x9/0x10 [ 50.955254] RSP: 0000:ffff8801b193e788 EFLAGS: 00010206 ORIG_RAX: ffffffffffffff12 [ 50.962929] RAX: 1ffff10037480000 RBX: ffffed0037480000 RCX: 0000000000008d80 [ 50.970169] RDX: 0000000000040000 RSI: 0000000000000000 RDI: ffffed0037477280 [ 50.977417] RBP: ffff8801b193e7a0 R08: 0000000000100000 R09: ffffed0037440000 [ 50.984657] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000200000 [ 50.991897] R13: 0000000000000000 R14: dffffc0000000000 R15: ffffea0006e88000 [ 50.999147] ? kernel_poison_pages+0xce/0x1f0 [ 51.003621] ? kasan_unpoison_shadow+0x35/0x50 [ 51.008170] kasan_alloc_pages+0x38/0x40 [ 51.012202] get_page_from_freelist+0x2cf2/0x52d0 [ 51.017022] ? __lock_is_held+0xb6/0x140 [ 51.021057] ? __isolate_free_page+0x8a0/0x8a0 [ 51.025610] ? rcu_read_lock_sched_held+0x108/0x120 [ 51.030685] ? __pagevec_lru_add_fn+0x783/0xf40 [ 51.035323] ? get_kernel_page+0x110/0x110 [ 51.039570] ? check_usage+0x22f/0xb60 [ 51.043610] ? check_noncircular+0x20/0x20 [ 51.047821] ? check_noncircular+0x20/0x20 [ 51.052038] ? find_held_lock+0x35/0x1d0 [ 51.056085] ? print_irqtrace_events+0x270/0x270 [ 51.060814] ? pagevec_lru_move_fn+0x197/0x260 [ 51.065366] ? lock_downgrade+0x980/0x980 [ 51.069484] ? lock_release+0xa40/0xa40 [ 51.073437] ? mark_held_locks+0xaf/0x100 [ 51.077555] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 51.082634] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 51.087621] ? pagevec_lru_move_fn+0x1ce/0x260 [ 51.092170] ? get_kernel_page+0x110/0x110 [ 51.096376] ? __lru_cache_add+0x2a6/0x410 [ 51.100586] ? __pagevec_lru_add+0x30/0x30 [ 51.104792] ? print_irqtrace_events+0x270/0x270 [ 51.109520] ? mem_cgroup_can_attach+0x590/0x590 [ 51.114244] ? lru_cache_add+0x1c7/0x3a0 [ 51.118276] ? __mem_cgroup_threshold+0x8f0/0x8f0 [ 51.123089] ? mark_held_locks+0xaf/0x100 [ 51.127210] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 51.132195] ? print_irqtrace_events+0x270/0x270 [ 51.136920] ? find_held_lock+0x35/0x1d0 [ 51.140949] ? do_huge_pmd_anonymous_page+0xab1/0x1b00 [ 51.146194] ? lock_downgrade+0x980/0x980 [ 51.150311] ? pudp_huge_clear_flush+0x1f0/0x1f0 [ 51.155035] ? print_irqtrace_events+0x270/0x270 [ 51.159758] ? __lock_acquire+0x664/0x3e00 [ 51.163961] ? do_raw_spin_trylock+0x190/0x190 [ 51.168516] ? _cond_resched+0x14/0x30 [ 51.172375] ? clear_huge_page+0x309/0x730 [ 51.176596] ? print_irqtrace_events+0x270/0x270 [ 51.181322] ? __lock_acquire+0x664/0x3e00 [ 51.185522] ? lock_downgrade+0x980/0x980 [ 51.189653] ? lock_release+0xa40/0xa40 [ 51.193599] ? __lock_acquire+0x664/0x3e00 [ 51.197803] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 51.202961] ? is_bpf_text_address+0x7b/0x120 [ 51.207425] ? lock_downgrade+0x980/0x980 [ 51.211554] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 51.216721] ? __lock_acquire+0x664/0x3e00 [ 51.220925] ? check_noncircular+0x20/0x20 [ 51.225237] ? check_noncircular+0x20/0x20 [ 51.229441] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 51.234600] ? find_held_lock+0x35/0x1d0 [ 51.238630] ? check_noncircular+0x20/0x20 [ 51.242833] ? __is_insn_slot_addr+0x1fc/0x330 [ 51.247382] ? lock_downgrade+0x980/0x980 [ 51.251498] ? check_noncircular+0x20/0x20 [ 51.255700] ? find_held_lock+0x35/0x1d0 [ 51.259749] __alloc_pages_nodemask+0x4a5/0xdd0 [ 51.264392] ? __alloc_pages_slowpath+0x2d10/0x2d10 [ 51.269377] ? depot_save_stack+0x2ca/0x460 [ 51.273926] ? lock_downgrade+0x980/0x980 [ 51.278048] ? lock_release+0xa40/0xa40 [ 51.282001] ? is_bpf_text_address+0xa4/0x120 [ 51.286466] ? kernel_text_address+0x102/0x140 [ 51.291017] ? check_noncircular+0x20/0x20 [ 51.295226] alloc_pages_vma+0x30b/0x4b0 [ 51.299257] do_huge_pmd_anonymous_page+0x376/0x1b00 [ 51.304347] ? xt_table_unlock+0x52/0x60 [ 51.308378] ? __thp_get_unmapped_area+0x130/0x130 [ 51.313281] ? __lock_acquire+0x664/0x3e00 [ 51.317484] ? __lock_acquire+0x664/0x3e00 [ 51.321699] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 51.326859] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 51.332019] ? wait_for_completion+0x770/0x770 [ 51.336571] ? mark_held_locks+0xaf/0x100 [ 51.340689] ? kfree+0xf3/0x260 [ 51.343941] ? __vunmap+0x2b9/0x380 [ 51.347536] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 51.352522] ? trace_hardirqs_on+0xd/0x10 [ 51.356638] ? __vunmap+0x252/0x380 [ 51.360235] ? mutex_unlock+0xd/0x10 [ 51.363928] ? xt_table_unlock+0x52/0x60 [ 51.367960] __handle_mm_fault+0x1a0c/0x3ce0 [ 51.372339] ? __pmd_alloc+0x4e0/0x4e0 [ 51.376209] ? check_noncircular+0x20/0x20 [ 51.380411] ? compat_table_info+0x4a0/0x4a0 [ 51.384790] ? find_held_lock+0x35/0x1d0 [ 51.388821] ? handle_mm_fault+0x270/0x970 [ 51.393025] ? lock_downgrade+0x980/0x980 [ 51.397144] handle_mm_fault+0x35c/0x970 [ 51.401184] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 51.405734] ? vmacache_find+0x5f/0x280 [ 51.409680] ? find_vma+0x30/0x150 [ 51.413192] __do_page_fault+0x5c9/0xc90 [ 51.417234] ? mm_fault_error+0x2c0/0x2c0 [ 51.421358] ? move_addr_to_kernel+0x60/0x60 [ 51.425744] ? do_syscall_64+0xb6/0x940 [ 51.429691] do_page_fault+0xee/0x730 [ 51.433459] ? __do_page_fault+0xc90/0xc90 [ 51.437681] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 51.443197] ? syscall_return_slowpath+0x550/0x550 [ 51.448185] ? syscall_return_slowpath+0x2ac/0x550 [ 51.453095] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 51.458430] ? page_fault+0x6c/0x90 [ 51.462034] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.466864] ? page_fault+0x6c/0x90 [ 51.470461] page_fault+0x82/0x90 [ 51.473968] RIP: 0033:0x401f48 [ 51.477139] RSP: 002b:00007ffe2578cef0 EFLAGS: 00010217 [ 51.482469] RAX: 0000000000000000 RBX: ffffffffffffffff RCX: 0000000000446119 [ 51.489798] RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000004 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 51.497035] RBP: 00000000004a7c30 R08: 00000000000004a8 R09: 0000000000000000 [ 51.504273] R10: 0000000020038b58 R11: 0000000000000207 R12: 0000000020038c80 [ 51.511512] R13: 00000000004035e0 R14: 0000000000000000 R15: 0000000000000000 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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