[....] Starting enhanced syslogd: rsyslogd[ 16.446069] audit: type=1400 audit(1519182426.871:5): avc: denied { syslog } for pid=3998 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?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. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.080856] audit: type=1400 audit(1519182429.506:6): avc: denied { map } for pid=4137 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 Warning: Permanently added '10.128.0.18' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 25.458668] audit: type=1400 audit(1519182435.884:7): avc: denied { map } for pid=4151 comm="syzkaller833067" path="/root/syzkaller833067330" 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 RTNETLINK answers: Operation not supported [ 25.758649] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument executing program [ 26.071224] [ 26.072859] ===================================== [ 26.077666] WARNING: bad unlock balance detected! [ 26.082476] 4.16.0-rc2+ #323 Not tainted [ 26.086533] ------------------------------------- [ 26.091344] syzkaller833067/4151 is trying to release lock (rcu_read_lock_bh) at: [ 26.098949] [] hashlimit_mt_common.isra.10+0x1beb/0x2610 [ 26.105931] but there are no more locks to release! [ 26.110911] [ 26.110911] other info that might help us debug this: [ 26.117541] 5 locks held by syzkaller833067/4151: [ 26.122762] #0: (&xt[i].mutex){+.+.}, at: [<0000000094bed7a2>] xt_find_table_lock+0x3e/0x3e0 [ 26.131494] #1: (&mm->mmap_sem){++++}, at: [<00000000fafb8f99>] __do_page_fault+0x32d/0xc90 [ 26.140130] #2: ((&idev->mc_ifc_timer)){+.-.}, at: [<00000000d6e85709>] call_timer_fn+0x1c6/0x820 [ 26.149288] #3: (rcu_read_lock){....}, at: [<00000000f3bb8d80>] mld_sendpack+0x180/0xe70 [ 26.157668] #4: (rcu_read_lock){....}, at: [<000000006c0cdeb0>] nf_hook.constprop.37+0x0/0x830 [ 26.166575] [ 26.166575] stack backtrace: [ 26.171048] CPU: 1 PID: 4151 Comm: syzkaller833067 Not tainted 4.16.0-rc2+ #323 [ 26.178460] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.187785] Call Trace: [ 26.190338] [ 26.192463] dump_stack+0x194/0x257 [ 26.196067] ? arch_local_irq_restore+0x53/0x53 [ 26.200707] ? hashlimit_mt_common.isra.10+0x1beb/0x2610 [ 26.206125] print_unlock_imbalance_bug+0x12f/0x140 [ 26.211112] lock_release+0x6fe/0xa40 [ 26.214881] ? hashlimit_mt_common.isra.10+0x1beb/0x2610 [ 26.220300] ? lock_downgrade+0x980/0x980 [ 26.224416] ? lock_release+0xa40/0xa40 [ 26.228357] ? __raw_spin_lock_init+0x1c/0x100 [ 26.232909] ? do_raw_spin_trylock+0x190/0x190 [ 26.237463] hashlimit_mt_common.isra.10+0x1c08/0x2610 [ 26.242706] ? lock_downgrade+0x980/0x980 [ 26.246822] ? dsthash_find+0x5b0/0x5b0 [ 26.250765] ? __lock_acquire+0x664/0x3e00 [ 26.254969] ? is_bpf_text_address+0x7b/0x120 [ 26.259433] ? lock_downgrade+0x95a/0x980 [ 26.263562] ? rcutorture_record_progress+0x10/0x10 [ 26.268550] ? __kernel_text_address+0xd/0x40 [ 26.273015] ? unwind_get_return_address+0x61/0xa0 [ 26.277915] hashlimit_mt+0x78/0x90 [ 26.281508] ? hashlimit_mt+0x78/0x90 [ 26.285280] ip6t_do_table+0x98d/0x1a30 [ 26.289228] ? kmem_cache_alloc_trace+0x136/0x740 [ 26.294042] ? mld_sendpack+0x617/0xe70 [ 26.298003] ? ip6t_error+0x60/0x60 [ 26.301608] ? page_fault+0x62/0x90 [ 26.305204] ? check_noncircular+0x20/0x20 [ 26.309408] ? lock_acquire+0x1d5/0x580 [ 26.313349] ? lock_acquire+0x1d5/0x580 [ 26.317290] ? igmp6_mcf_seq_next+0x660/0x660 [ 26.321754] ? lock_release+0xa40/0xa40 [ 26.325696] ip6table_raw_hook+0x65/0x80 [ 26.329727] nf_hook_slow+0xba/0x1a0 [ 26.333409] nf_hook.constprop.37+0x3f6/0x830 [ 26.338046] ? igmp6_mcf_seq_next+0x660/0x660 [ 26.342510] ? trace_hardirqs_on+0xd/0x10 [ 26.346626] ? __local_bh_enable_ip+0x121/0x230 [ 26.351263] ? _raw_spin_unlock_bh+0x30/0x40 [ 26.355645] ? rt6_uncached_list_add+0x1b7/0x240 [ 26.360371] ? rt6_fill_node+0x18b0/0x18b0 [ 26.364575] ? icmp6_dst_alloc+0x475/0x660 [ 26.368781] ? ip6_mc_leave_src+0x1d0/0x1d0 [ 26.373069] ? icmpv6_flow_init+0x1f6/0x270 [ 26.377360] mld_sendpack+0x6c2/0xe70 [ 26.381131] ? nf_hook.constprop.37+0x830/0x830 [ 26.385777] ? mark_held_locks+0xaf/0x100 [ 26.389896] ? trace_hardirqs_on+0xd/0x10 [ 26.394015] ? __local_bh_enable_ip+0x121/0x230 [ 26.398671] mld_ifc_timer_expire+0x3d9/0x770 [ 26.403140] call_timer_fn+0x228/0x820 [ 26.406995] ? mld_dad_timer_expire+0x100/0x100 [ 26.411634] ? process_timeout+0x40/0x40 [ 26.415673] ? __run_timers+0x7e3/0xb70 [ 26.419618] ? lock_downgrade+0x980/0x980 [ 26.423735] ? debug_object_deactivate+0x364/0x560 [ 26.428634] ? lock_release+0xa40/0xa40 [ 26.432588] ? mark_held_locks+0xaf/0x100 [ 26.436706] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 26.441693] ? mld_dad_timer_expire+0x100/0x100 [ 26.446328] ? mld_dad_timer_expire+0x100/0x100 [ 26.450973] __run_timers+0x7ee/0xb70 [ 26.454743] ? trigger_dyntick_cpu.isra.29+0x150/0x150 [ 26.459987] ? timerqueue_add+0x1e9/0x280 [ 26.464110] ? check_noncircular+0x20/0x20 [ 26.468313] ? enqueue_hrtimer+0x177/0x4b0 [ 26.472524] ? lock_release+0xa40/0xa40 [ 26.476475] ? retrigger_next_event+0x1e0/0x1e0 [ 26.481118] ? print_irqtrace_events+0x270/0x270 [ 26.485842] ? check_noncircular+0x20/0x20 [ 26.490055] ? clockevents_program_event+0x163/0x2e0 [ 26.495128] ? lock_downgrade+0x980/0x980 [ 26.499249] ? __lock_is_held+0xb6/0x140 [ 26.503283] run_timer_softirq+0x4c/0x70 [ 26.507313] __do_softirq+0x2d7/0xb85 [ 26.511084] ? ktime_get+0x26f/0x3a0 [ 26.514766] ? __irqentry_text_end+0x1f8ad4/0x1f8ad4 [ 26.519839] ? check_noncircular+0x20/0x20 [ 26.524043] ? native_apic_msr_write+0x5c/0x80 [ 26.528593] ? lapic_next_event+0x54/0x80 [ 26.532710] ? clockevents_program_event+0x108/0x2e0 [ 26.537791] ? tick_program_event+0x83/0x100 [ 26.542167] ? __lock_is_held+0xb6/0x140 [ 26.546202] irq_exit+0x1cc/0x200 [ 26.549625] smp_apic_timer_interrupt+0x16b/0x700 [ 26.554434] ? smp_call_function_single_interrupt+0x640/0x640 [ 26.560297] ? _raw_spin_lock+0x32/0x40 [ 26.564239] ? _raw_spin_unlock+0x22/0x30 [ 26.568358] ? handle_edge_irq+0x2b4/0x7c0 [ 26.572561] ? task_prio+0x50/0x50 [ 26.576072] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.580883] apic_timer_interrupt+0x8e/0xa0 [ 26.585167] [ 26.587375] RIP: 0010:_raw_spin_unlock_irqrestore+0x5e/0xba [ 26.593050] RSP: 0018:ffff8801abed6d10 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff12 [ 26.600725] RAX: dffffc0000000000 RBX: 0000000000000282 RCX: 0000000000000006 [ 26.607963] RDX: 1ffffffff0d592d5 RSI: 1ffff1003621e130 RDI: 0000000000000282 [ 26.615201] RBP: ffff8801abed6d20 R08: 1ffff100357dad70 R09: 0000000000000000 [ 26.622440] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff86d02f60 [ 26.629677] R13: 000000000001061c R14: 00000000000000d0 R15: 0000000000000282 [ 26.636925] depot_save_stack+0x2ca/0x460 [ 26.641043] save_stack+0xa3/0xd0 [ 26.644465] ? save_stack+0x43/0xd0 [ 26.648057] ? kasan_kmalloc+0xad/0xe0 [ 26.651913] ? kasan_slab_alloc+0x12/0x20 [ 26.656030] ? kmem_cache_alloc+0x11b/0x760 [ 26.660319] ? ptlock_alloc+0x24/0x70 [ 26.664086] ? pte_alloc_one+0x59/0x100 [ 26.668027] ? do_huge_pmd_anonymous_page+0x551/0x1b00 [ 26.673270] ? __handle_mm_fault+0x1a0c/0x3ce0 [ 26.677819] ? handle_mm_fault+0x35c/0x970 [ 26.682022] ? __do_page_fault+0x5c9/0xc90 [ 26.686221] ? do_page_fault+0xee/0x730 [ 26.690163] ? page_fault+0x62/0x90 [ 26.693759] ? copy_user_generic_unrolled+0x89/0xc0 [ 26.698744] ? __do_replace+0x840/0xa70 [ 26.702700] ? do_ip6t_set_ctl+0x40f/0x5f0 [ 26.706904] ? nf_setsockopt+0x67/0xc0 [ 26.710768] ? ipv6_setsockopt+0x10b/0x130 [ 26.714968] ? rawv6_setsockopt+0x4a/0xf0 [ 26.719101] ? sock_common_setsockopt+0x95/0xd0 [ 26.723736] ? SyS_setsockopt+0x189/0x360 [ 26.727855] ? do_syscall_64+0x280/0x940 [ 26.731885] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 26.737219] ? find_held_lock+0x35/0x1d0 [ 26.741250] ? print_irqtrace_events+0x270/0x270 [ 26.745971] ? __lock_is_held+0xb6/0x140 [ 26.750002] ? trace_event_raw_event_sched_switch+0x810/0x810 [ 26.755864] ? kasan_unpoison_shadow+0x35/0x50 [ 26.760415] kasan_kmalloc+0xad/0xe0 [ 26.764097] kasan_slab_alloc+0x12/0x20 [ 26.768041] kmem_cache_alloc+0x11b/0x760 [ 26.772158] ? print_irqtrace_events+0x270/0x270 [ 26.776882] ptlock_alloc+0x24/0x70 [ 26.780478] pte_alloc_one+0x59/0x100 [ 26.784246] do_huge_pmd_anonymous_page+0x551/0x1b00 [ 26.789319] ? __thp_get_unmapped_area+0x130/0x130 [ 26.794215] ? __lock_acquire+0x664/0x3e00 [ 26.798417] ? __lock_acquire+0x664/0x3e00 [ 26.802619] ? kernel_text_address+0x102/0x140 [ 26.807171] ? __is_insn_slot_addr+0x1fc/0x330 [ 26.811730] ? lock_downgrade+0x980/0x980 [ 26.815849] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 26.821006] ? modules_open+0xa0/0xa0 [ 26.824776] ? trace_raw_output_xdp_redirect_map_err+0x440/0x440 [ 26.830897] ? is_bpf_text_address+0x7b/0x120 [ 26.835362] ? lock_downgrade+0x980/0x980 [ 26.839477] ? lock_release+0xa40/0xa40 [ 26.843420] ? __free_insn_slot+0x5c0/0x5c0 [ 26.847713] ? rcutorture_record_progress+0x10/0x10 [ 26.852697] ? is_bpf_text_address+0xa4/0x120 [ 26.857162] ? kernel_text_address+0x102/0x140 [ 26.861714] __handle_mm_fault+0x1a0c/0x3ce0 [ 26.866091] ? __pmd_alloc+0x4e0/0x4e0 [ 26.869944] ? check_noncircular+0x20/0x20 [ 26.874147] ? print_lockdep_cache.isra.32+0x109/0x109 [ 26.879390] ? find_held_lock+0x35/0x1d0 [ 26.883417] ? handle_mm_fault+0x270/0x970 [ 26.887621] ? lock_downgrade+0x980/0x980 [ 26.891741] handle_mm_fault+0x35c/0x970 [ 26.895774] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 26.900322] ? vmacache_find+0x5f/0x280 [ 26.904266] ? find_vma+0x30/0x150 [ 26.907782] __do_page_fault+0x5c9/0xc90 [ 26.911816] ? mm_fault_error+0x2c0/0x2c0 [ 26.915931] ? kfree+0xd9/0x260 [ 26.919179] ? xt_free_table_info+0x110/0x170 [ 26.923643] ? __do_replace+0x810/0xa70 [ 26.927585] ? check_noncircular+0x20/0x20 [ 26.931787] ? rawv6_setsockopt+0x4a/0xf0 [ 26.935903] ? sock_common_setsockopt+0x95/0xd0 [ 26.940538] do_page_fault+0xee/0x730 [ 26.944308] ? __do_page_fault+0xc90/0xc90 [ 26.948599] ? find_held_lock+0x35/0x1d0 [ 26.952629] ? __might_fault+0x110/0x1d0 [ 26.956660] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.961490] page_fault+0x62/0x90 [ 26.964920] RIP: 0010:copy_user_generic_unrolled+0x89/0xc0 [ 26.970510] RSP: 0018:ffff8801abed79b8 EFLAGS: 00010206 [ 26.975839] RAX: fffff5200027b806 RBX: 0000000000000030 RCX: 0000000000000006 [ 26.983077] RDX: 0000000000000000 RSI: ffffc900013dc000 RDI: 0000000020849fd0 [ 26.990318] RBP: ffff8801abed79e8 R08: 0000000000000000 R09: fffff5200027b806 [ 26.997557] R10: 0000000000000006 R11: fffff5200027b805 R12: 0000000020849fd0 [ 27.004794] R13: ffffc900013dc000 R14: 00007ffffffff000 R15: 000000002084a000 [ 27.012043] ? _copy_to_user+0x9b/0xc0 [ 27.015899] __do_replace+0x840/0xa70 [ 27.019670] ? compat_table_info+0x4a0/0x4a0 [ 27.024048] ? kasan_check_write+0x14/0x20 [ 27.028335] ? _copy_from_user+0x99/0x110 [ 27.032450] do_ip6t_set_ctl+0x40f/0x5f0 [ 27.036479] ? translate_compat_table+0x1c50/0x1c50 [ 27.041465] ? mutex_unlock+0xd/0x10 [ 27.045162] ? nf_sockopt_find.constprop.0+0x1a7/0x220 [ 27.050443] nf_setsockopt+0x67/0xc0 [ 27.054144] ipv6_setsockopt+0x10b/0x130 [ 27.058176] rawv6_setsockopt+0x4a/0xf0 [ 27.062126] sock_common_setsockopt+0x95/0xd0 [ 27.066591] SyS_setsockopt+0x189/0x360 [ 27.070533] ? SyS_recv+0x40/0x40 [ 27.073956] ? mm_fault_error+0x2c0/0x2c0 [ 27.078073] ? move_addr_to_kernel+0x60/0x60 [ 27.082449] ? do_syscall_64+0xb6/0x940 [ 27.086390] ? SyS_recv+0x40/0x40 [ 27.089810] do_syscall_64+0x280/0x940 [ 27.093676] ? __do_page_fault+0xc90/0xc90 [ 27.097888] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 27.102613] ? syscall_return_slowpath+0x550/0x550 [ 27.107511] ? syscall_return_slowpath+0x2ac/0x550 [ 27.112408] ? prepare_exit_to_usermode+0x350/0x350 [ 27.117392] ? retint_user+0x18/0x18 [ 27.121073] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.125888] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 27.131044] RIP: 0033:0x4460c9 [ 27.134204] RSP: 002b:00007ffd98949198 EFLAGS: 00000207 ORIG_RAX: 0000000000000036 [ 27.141878] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 00000000004460c9 [ 27.149290] RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000004 [ 27.156527] RBP: 00000000004a7bd0 R08: 00000000000004a8 R09: 0000000000000000 [ 27.163770] R10: 0000000020038b58 R11: 0000000000000207 R12: 0000000020038c80 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.171008] R13: 0000000000403590 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 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