Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.15' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 33.174279] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 [ 33.223119] BTRFS info (device loop0): enabling inode map caching [ 33.247786] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (8130) [ 33.251247] BTRFS info (device loop0): force clearing of disk cache [ 33.269723] BTRFS info (device loop0): disabling free space tree [ 33.278585] BTRFS info (device loop0): has skinny extents [ 33.312267] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor506 (8129) [ 33.331303] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8133) [ 33.344889] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by systemd-udevd (8144) [ 33.358980] hrtimer: interrupt took 52120 ns executing program executing program [ 33.387125] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (8146) executing program [ 33.502394] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (8131) [ 33.536804] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (8171) [ 33.579882] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by syz-executor506 (8132) [ 33.650304] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8153) executing program executing program [ 33.696023] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by systemd-udevd (8179) [ 33.807282] BTRFS info (device loop0): clearing free space tree [ 33.820742] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (8184) [ 33.845843] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by systemd-udevd (8146) [ 33.903707] BTRFS info (device loop0): clearing 1 ro feature flag [ 33.940830] BTRFS info (device loop0): clearing 2 ro feature flag executing program [ 33.980643] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor506 (8183) [ 34.040570] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (8153) executing program [ 34.255592] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8188) [ 34.282210] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8179) executing program [ 34.398261] BTRFS info (device loop1): enabling inode map caching [ 34.405115] BTRFS info (device loop1): force clearing of disk cache [ 34.414467] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (8191) [ 34.448651] BTRFS info (device loop1): disabling free space tree [ 34.470973] BTRFS info (device loop1): has skinny extents [ 34.473599] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (8153) executing program executing program [ 34.672167] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (8206) [ 34.699862] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by systemd-udevd (8179) [ 34.738977] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor506 (8214) [ 34.761020] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (8171) executing program executing program [ 34.858876] BTRFS info (device loop1): clearing free space tree [ 34.890108] BTRFS info (device loop1): clearing 1 ro feature flag [ 34.896359] BTRFS info (device loop1): clearing 2 ro feature flag [ 35.060403] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8226) [ 35.129640] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8179) [ 35.181675] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (8236) executing program [ 35.259398] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (8153) [ 35.289573] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by syz-executor506 (8239) executing program [ 35.370279] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by systemd-udevd (8144) [ 35.457447] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by systemd-udevd (8171) [ 35.504554] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (8261) [ 35.509533] BTRFS info (device loop3): enabling inode map caching [ 35.544888] BTRFS info (device loop3): force clearing of disk cache [ 35.578051] BTRFS info (device loop3): disabling free space tree executing program [ 35.599927] BTRFS info (device loop3): has skinny extents executing program [ 35.714867] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8282) executing program [ 35.810245] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8318) executing program [ 35.873964] BTRFS info (device loop3): clearing free space tree [ 35.894112] BTRFS info (device loop3): clearing 1 ro feature flag [ 35.910546] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (8290) [ 35.916279] BTRFS info (device loop3): clearing 2 ro feature flag executing program [ 36.238328] BTRFS info (device loop0): enabling inode map caching [ 36.268292] BTRFS info (device loop0): force clearing of disk cache [ 36.295919] BTRFS info (device loop0): disabling free space tree [ 36.322888] BTRFS info (device loop0): has skinny extents [ 36.328610] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by syz-executor506 (8310) executing program [ 36.364739] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by systemd-udevd (8349) executing program [ 36.474149] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (8326) [ 36.545555] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8337) [ 36.566749] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by systemd-udevd (8346) [ 36.604146] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8356) executing program executing program [ 36.697745] BTRFS info (device loop0): clearing free space tree [ 36.714252] BTRFS info (device loop0): clearing 1 ro feature flag [ 36.753491] BTRFS info (device loop0): clearing 2 ro feature flag [ 36.858579] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (8352) [ 36.882893] [ 36.884533] ====================================================== [ 36.890838] WARNING: possible circular locking dependency detected [ 36.897147] 4.19.211-syzkaller #0 Not tainted [ 36.901631] ------------------------------------------------------ [ 36.907945] syz-executor506/8407 is trying to acquire lock: [ 36.913640] 000000008fd65d2a (&mm->mmap_sem){++++}, at: __might_fault+0xef/0x1d0 [ 36.921179] [ 36.921179] but task is already holding lock: [ 36.927141] 0000000038adf7db (&cpuctx_mutex){+.+.}, at: perf_event_ctx_lock_nested+0x237/0x430 [ 36.935892] [ 36.935892] which lock already depends on the new lock. [ 36.935892] [ 36.944200] [ 36.944200] the existing dependency chain (in reverse order) is: [ 36.951810] [ 36.951810] -> #10 (&cpuctx_mutex){+.+.}: [ 36.957445] perf_event_init_cpu+0xc4/0x170 [ 36.962285] perf_event_init+0x309/0x34e [ 36.966863] start_kernel+0x5b1/0x911 [ 36.969761] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by syz-executor506 (8377) [ 36.971182] secondary_startup_64+0xa4/0xb0 [ 36.987668] [ 36.987668] -> #9 (pmus_lock){+.+.}: [ 36.992867] perf_event_init_cpu+0x2c/0x170 [ 36.997705] cpuhp_invoke_callback+0x201/0x1b80 [ 37.002886] _cpu_up+0x25c/0x540 [ 37.006769] do_cpu_up+0xdd/0x1b0 [ 37.010735] smp_init+0x1ed/0x202 [ 37.014704] kernel_init_freeable+0x62b/0xab7 [ 37.019720] kernel_init+0xd/0x1ba [ 37.023775] ret_from_fork+0x24/0x30 [ 37.027997] [ 37.027997] -> #8 (cpu_hotplug_lock.rw_sem){++++}: [ 37.034404] kmem_cache_create_usercopy+0x24/0x240 [ 37.039839] kmem_cache_create+0xd/0x10 [ 37.044338] bioset_init+0x473/0x810 [ 37.048566] init_bio+0x184/0x1e0 [ 37.052531] do_one_initcall+0xf1/0x740 [ 37.057024] kernel_init_freeable+0x9c5/0xab7 [ 37.062034] kernel_init+0xd/0x1ba [ 37.066092] ret_from_fork+0x24/0x30 [ 37.070313] [ 37.070313] -> #7 (bio_slab_lock){+.+.}: [ 37.075857] bioset_init+0x1ab/0x810 [ 37.080090] blk_alloc_queue_node+0x189/0xbf0 [ 37.085102] blk_mq_init_queue+0x44/0xa0 [ 37.089678] loop_add+0x2cb/0x8a0 [ 37.093646] loop_init+0x1ef/0x24a [ 37.097702] do_one_initcall+0xf1/0x740 [ 37.102193] kernel_init_freeable+0x9c5/0xab7 [ 37.107196] kernel_init+0xd/0x1ba [ 37.111234] ret_from_fork+0x24/0x30 [ 37.115437] [ 37.115437] -> #6 (loop_ctl_mutex){+.+.}: [ 37.121053] lo_open+0x19/0xd0 [ 37.124754] __blkdev_get+0x372/0x1480 [ 37.129140] blkdev_get+0xb0/0x940 [ 37.133175] blkdev_open+0x202/0x290 [ 37.137384] do_dentry_open+0x4aa/0x1160 [ 37.141944] path_openat+0x793/0x2df0 [ 37.146240] do_filp_open+0x18c/0x3f0 [ 37.150535] do_sys_open+0x3b3/0x520 [ 37.154746] do_syscall_64+0xf9/0x620 [ 37.159043] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.164722] [ 37.164722] -> #5 (&bdev->bd_mutex){+.+.}: [ 37.170413] blkdev_put+0x30/0x520 [ 37.174450] close_fs_devices.part.0+0x24d/0x8e0 [ 37.179705] btrfs_close_devices+0x95/0x1f0 [ 37.184525] close_ctree+0x3c8/0x850 [ 37.188738] generic_shutdown_super+0x144/0x370 [ 37.193904] kill_anon_super+0x36/0x60 [ 37.198288] btrfs_kill_super+0x49/0x550 [ 37.202849] deactivate_locked_super+0x94/0x160 [ 37.208013] deactivate_super+0x174/0x1a0 [ 37.212656] cleanup_mnt+0x1a8/0x290 [ 37.216868] task_work_run+0x148/0x1c0 [ 37.221250] exit_to_usermode_loop+0x251/0x2a0 [ 37.226326] do_syscall_64+0x538/0x620 [ 37.230709] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.236388] [ 37.236388] -> #4 (&fs_devs->device_list_mutex){+.+.}: [ 37.243124] btrfs_run_dev_stats+0xbb/0xa80 [ 37.247945] commit_cowonly_roots+0x1ce/0xc30 [ 37.252940] btrfs_commit_transaction+0x94a/0x2480 [ 37.258366] btrfs_clear_free_space_tree+0x69d/0xa50 [ 37.263963] open_ctree.cold+0x30/0xc3d [ 37.268438] btrfs_mount_root+0x12e5/0x1830 [ 37.273261] mount_fs+0xa3/0x310 [ 37.277126] vfs_kern_mount.part.0+0x68/0x470 [ 37.282116] vfs_kern_mount+0x3c/0x60 [ 37.286414] btrfs_mount+0x23a/0xaa0 [ 37.290622] mount_fs+0xa3/0x310 [ 37.294483] vfs_kern_mount.part.0+0x68/0x470 [ 37.299475] do_mount+0x115c/0x2f50 [ 37.303597] ksys_mount+0xcf/0x130 [ 37.307637] __x64_sys_mount+0xba/0x150 [ 37.312108] do_syscall_64+0xf9/0x620 [ 37.316410] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.322093] [ 37.322093] -> #3 (&fs_info->tree_log_mutex){+.+.}: [ 37.328569] btrfs_commit_transaction+0x8c2/0x2480 [ 37.333996] btrfs_clear_free_space_tree+0x69d/0xa50 [ 37.339594] open_ctree.cold+0x30/0xc3d [ 37.344065] btrfs_mount_root+0x12e5/0x1830 [ 37.348882] mount_fs+0xa3/0x310 [ 37.352744] vfs_kern_mount.part.0+0x68/0x470 [ 37.357733] vfs_kern_mount+0x3c/0x60 [ 37.362031] btrfs_mount+0x23a/0xaa0 [ 37.366240] mount_fs+0xa3/0x310 [ 37.370102] vfs_kern_mount.part.0+0x68/0x470 [ 37.375092] do_mount+0x115c/0x2f50 [ 37.379222] ksys_mount+0xcf/0x130 [ 37.383258] __x64_sys_mount+0xba/0x150 [ 37.387729] do_syscall_64+0xf9/0x620 [ 37.392029] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.397711] [ 37.397711] -> #2 (&fs_info->reloc_mutex){+.+.}: [ 37.403925] btrfs_commit_transaction+0x80b/0x2480 [ 37.409355] btrfs_clear_free_space_tree+0x69d/0xa50 [ 37.414955] open_ctree.cold+0x30/0xc3d [ 37.419424] btrfs_mount_root+0x12e5/0x1830 [ 37.424241] mount_fs+0xa3/0x310 [ 37.428103] vfs_kern_mount.part.0+0x68/0x470 [ 37.433096] vfs_kern_mount+0x3c/0x60 [ 37.437399] btrfs_mount+0x23a/0xaa0 [ 37.441608] mount_fs+0xa3/0x310 [ 37.445473] vfs_kern_mount.part.0+0x68/0x470 [ 37.450464] do_mount+0x115c/0x2f50 [ 37.454589] ksys_mount+0xcf/0x130 [ 37.458625] __x64_sys_mount+0xba/0x150 [ 37.463095] do_syscall_64+0xf9/0x620 [ 37.467401] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.473083] [ 37.473083] -> #1 (sb_internal#2){.+.+}: [ 37.478609] start_transaction+0xa37/0xf90 [ 37.483340] btrfs_dirty_inode+0xe3/0x210 [ 37.487990] btrfs_update_time+0x33b/0x3d0 [ 37.492740] touch_atime+0x23c/0x2a0 [ 37.496951] btrfs_file_mmap+0x11b/0x160 [ 37.501509] mmap_region+0xc94/0x16b0 [ 37.505807] do_mmap+0x8e8/0x1080 [ 37.509758] vm_mmap_pgoff+0x197/0x200 [ 37.514141] ksys_mmap_pgoff+0x298/0x5a0 [ 37.518705] do_syscall_64+0xf9/0x620 [ 37.523004] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.528684] [ 37.528684] -> #0 (&mm->mmap_sem){++++}: [ 37.534206] __might_fault+0x152/0x1d0 [ 37.538595] perf_copy_attr+0xab/0x7a0 [ 37.542988] _perf_ioctl+0x6aa/0x2300 [ 37.547285] perf_ioctl+0x55/0x80 [ 37.551241] do_vfs_ioctl+0xcdb/0x12e0 [ 37.555625] ksys_ioctl+0x9b/0xc0 [ 37.559573] __x64_sys_ioctl+0x6f/0xb0 [ 37.563961] do_syscall_64+0xf9/0x620 [ 37.568260] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.573942] [ 37.573942] other info that might help us debug this: [ 37.573942] [ 37.582056] Chain exists of: [ 37.582056] &mm->mmap_sem --> pmus_lock --> &cpuctx_mutex [ 37.582056] [ 37.592090] Possible unsafe locking scenario: [ 37.592090] [ 37.598119] CPU0 CPU1 [ 37.602765] ---- ---- [ 37.607402] lock(&cpuctx_mutex); [ 37.610913] lock(pmus_lock); [ 37.616594] lock(&cpuctx_mutex); [ 37.622622] lock(&mm->mmap_sem); [ 37.626134] [ 37.626134] *** DEADLOCK *** [ 37.626134] [ 37.632168] 1 lock held by syz-executor506/8407: [ 37.636893] #0: 0000000038adf7db (&cpuctx_mutex){+.+.}, at: perf_event_ctx_lock_nested+0x237/0x430 [ 37.646060] [ 37.646060] stack backtrace: [ 37.650534] CPU: 0 PID: 8407 Comm: syz-executor506 Not tainted 4.19.211-syzkaller #0 [ 37.665797] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 37.675126] Call Trace: [ 37.677694] dump_stack+0x1fc/0x2ef [ 37.681300] print_circular_bug.constprop.0.cold+0x2d7/0x41e [ 37.687075] __lock_acquire+0x30c9/0x3ff0 [ 37.691201] ? io_schedule_timeout+0x140/0x140 [ 37.695760] ? mark_held_locks+0xf0/0xf0 [ 37.699799] ? try_to_wake_up+0x733/0x1050 [ 37.704009] ? preempt_schedule_common+0x45/0xc0 [ 37.708742] ? ___preempt_schedule+0x16/0x18 [ 37.713129] lock_acquire+0x170/0x3c0 [ 37.716909] ? __might_fault+0xef/0x1d0 [ 37.720861] __might_fault+0x152/0x1d0 [ 37.724723] ? __might_fault+0xef/0x1d0 [ 37.728683] perf_copy_attr+0xab/0x7a0 [ 37.732556] _perf_ioctl+0x6aa/0x2300 [ 37.736336] ? perf_event_ctx_lock_nested+0x237/0x430 [ 37.741502] ? mutex_trylock+0x1a0/0x1a0 [ 37.745541] ? __se_sys_perf_event_open+0x2720/0x2720 [ 37.750708] ? perf_event_ctx_lock_nested+0x1ff/0x430 [ 37.755876] ? perf_event_ctx_lock_nested+0x36e/0x430 [ 37.761042] ? put_ctx+0x130/0x130 [ 37.764563] ? futex_exit_release+0x220/0x220 [ 37.769035] ? _perf_ioctl+0x2300/0x2300 [ 37.773073] perf_ioctl+0x55/0x80 [ 37.776506] do_vfs_ioctl+0xcdb/0x12e0 [ 37.780377] ? lock_downgrade+0x720/0x720 [ 37.784501] ? check_preemption_disabled+0x41/0x280 [ 37.789493] ? ioctl_preallocate+0x200/0x200 [ 37.793877] ? __fget+0x356/0x510 [ 37.797308] ? do_dup2+0x450/0x450 [ 37.800823] ? __se_sys_futex+0x298/0x3b0 [ 37.804952] ksys_ioctl+0x9b/0xc0 [ 37.808386] __x64_sys_ioctl+0x6f/0xb0 [ 37.812252] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 37.816811] do_syscall_64+0xf9/0x620 [ 37.820589] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.825756] RIP: 0033:0x7fe653a6a879 [ 37.829447] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 37.848323] RSP: 002b:00007fe64c5f3208 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 37.856012] RAX: ffffffffffffffda RBX: 00007fe653af47b8 RCX: 00007fe653a6a879 [ 37.863260] RDX: 0000000000000000 RSI: 000000004008240b RDI: 0000000000000006 [ 37.870506] RBP: 00007fe653af47b0 R08: 0000000000000000 R09: 0000000000000000 [ 37.877752] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe653af47bc [ 37.884995] R13: 00007fff44202cef R14: 00007fe64c5f3300 R15: 0000000000022000 executing program [ 37.923196] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8401) executing program [ 37.965772] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor506 (8366) [ 37.977703] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (8357) executing program executing program [ 38.016931] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8346) [ 38.127990] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (8356) [ 38.203890] BTRFS info (device loop4): enabling inode map caching [ 38.235233] BTRFS info (device loop4): force clearing of disk cache [ 38.261983] BTRFS info (device loop4): disabling free space tree [ 38.267710] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (8416) [ 38.294702] BTRFS info (device loop4): has skinny extents executing program [ 38.304396] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (8349) executing program [ 38.381293] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8422) [ 38.410646] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor506 (8427) executing program executing program [ 38.437587] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8418) [ 38.471856] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (8346) [ 38.517928] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by syz-executor506 (8424) [ 38.561181] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by systemd-udevd (8356) executing program [ 38.605811] BTRFS info (device loop4): clearing free space tree [ 38.615360] BTRFS info (device loop4): clearing 1 ro feature flag [ 38.648012] BTRFS info (device loop4): clearing 2 ro feature flag [ 38.811558] BTRFS info (device loop0): enabling inode map caching [ 38.832724] BTRFS info (device loop0): force clearing of disk cache executing program [ 38.862121] BTRFS info (device loop0): disabling free space tree [ 38.877472] BTRFS info (device loop0): has skinny extents [ 38.887877] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (8453) [ 38.923754] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (8493) executing program [ 38.966220] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor506 (8471) [ 38.985607] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8469) [ 39.007686] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (8498) executing program executing program [ 39.076131] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8508) [ 39.097129] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by syz-executor506 (8477) executing program [ 39.183441] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by systemd-udevd (8526) [ 39.245603] BTRFS info (device loop0): clearing free space tree [ 39.255033] BTRFS info (device loop0): clearing 1 ro feature flag [ 39.272440] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (8494) [ 39.308521] BTRFS info (device loop0): clearing 2 ro feature flag [ 39.324713] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by systemd-udevd (8493) executing program [ 39.373457] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (8512) executing program [ 39.428059] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (8498) [ 39.488321] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor506 (8530) executing program [ 39.538788] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8529) executing program [ 39.580069] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (8508) [ 39.613654] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8526) [ 39.771827] BTRFS info (device loop4): enabling inode map caching [ 39.801081] BTRFS info (device loop4): force clearing of disk cache executing program [ 39.818549] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by syz-executor506 (8536) [ 39.841436] BTRFS info (device loop4): disabling free space tree [ 39.857250] BTRFS info (device loop4): has skinny extents executing program [ 39.863153] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by systemd-udevd (8508) executing program [ 39.954723] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor506 (8555) [ 39.984936] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (8551) executing program [ 40.017669] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (8498) [ 40.037424] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (8493) [ 40.094845] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8557) [ 40.111346] BTRFS info (device loop4): clearing free space tree [ 40.119949] BTRFS info (device loop4): clearing 1 ro feature flag [ 40.126184] BTRFS info (device loop4): clearing 2 ro feature flag executing program [ 40.134799] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8508) [ 40.252293] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by syz-executor506 (8570) [ 40.314266] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by systemd-udevd (8526) [ 40.344667] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by syz-executor506 (8575) executing program executing program [ 40.387868] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by systemd-udevd (8493) executing program [ 40.517990] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (8600) [ 40.530409] BTRFS info (device loop3): enabling inode map caching [ 40.536755] BTRFS info (device loop3): force clearing of disk cache [ 40.544483] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (8508) [ 40.592767] BTRFS info (device loop3): disabling free space tree [ 40.610071] BTRFS info (device loop3): has skinny extents executing program [ 40.655165] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8608) executing program [ 40.705031] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8498) [ 40.718110] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by syz-executor506 (8620) executing program [ 40.768904] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by systemd-udevd (8630) [ 40.803498] BTRFS info (device loop3): clearing free space tree [ 40.812485] BTRFS info (device loop3): clearing 1 ro feature flag [ 40.831821] BTRFS info (device loop3): clearing 2 ro feature flag [ 40.985852] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (8632) [ 40.998492] BTRFS info (device loop1): enabling inode map caching [ 41.009485] BTRFS info (device loop1): force clearing of disk cache [ 41.019198] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (8498) executing program executing program [ 41.045790] BTRFS info (device loop1): disabling free space tree [ 41.077580] BTRFS info (device loop1): has skinny extents executing program [ 41.138658] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (8643) [ 41.166840] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by systemd-udevd (8630) [ 41.251405] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8662) [ 41.277948] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8498) executing program [ 41.312263] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by syz-executor506 (8667) [ 41.332766] BTRFS info (device loop1): clearing free space tree [ 41.342544] BTRFS info (device loop1): clearing 1 ro feature flag executing program [ 41.364269] BTRFS info (device loop1): clearing 2 ro feature flag [ 41.377302] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by systemd-udevd (8508) [ 41.586829] BTRFS info (device loop2): enabling inode map caching [ 41.604642] BTRFS info (device loop2): force clearing of disk cache [ 41.608552] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (8701) [ 41.626626] BTRFS info (device loop2): disabling free space tree executing program [ 41.639419] BTRFS info (device loop2): has skinny extents [ 41.645766] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor506 (8682) executing program [ 41.680344] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (8498) [ 41.702284] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by systemd-udevd (8493) executing program [ 41.776694] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8713) [ 41.809962] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8630) executing program [ 41.842839] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by syz-executor506 (8718) executing program [ 41.896777] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by systemd-udevd (8508) [ 41.968962] BTRFS info (device loop2): clearing free space tree [ 41.975068] BTRFS info (device loop2): clearing 1 ro feature flag [ 42.007009] BTRFS info (device loop2): clearing 2 ro feature flag [ 42.052437] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by systemd-udevd (8498) [ 42.114484] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by syz-executor506 (8734) [ 42.144205] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (8746) executing program [ 42.196500] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by systemd-udevd (8493) [ 42.221625] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8765) executing program executing program [ 42.294537] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8630) [ 42.389168] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor506 (8763) [ 42.406116] BTRFS info (device loop0): enabling inode map caching [ 42.417040] BTRFS info (device loop0): force clearing of disk cache executing program [ 42.431957] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by systemd-udevd (8498) [ 42.440834] BTRFS info (device loop0): disabling free space tree [ 42.468195] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (8526) executing program [ 42.488911] BTRFS info (device loop0): has skinny extents [ 42.502303] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (8782) executing program [ 42.635885] BTRFS info (device loop0): clearing free space tree [ 42.649893] BTRFS info (device loop0): clearing 1 ro feature flag [ 42.678932] BTRFS info (device loop0): clearing 2 ro feature flag [ 42.712232] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8792) executing program [ 42.760860] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8835) executing program [ 42.904416] BTRFS info (device loop1): enabling inode map caching [ 42.926097] BTRFS info (device loop1): force clearing of disk cache [ 42.949942] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (8803) [ 42.958017] BTRFS info (device loop1): disabling free space tree [ 42.995654] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (8843) [ 43.000800] BTRFS info (device loop1): has skinny extents [ 43.032073] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor506 (8808) executing program executing program [ 43.077153] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (8839) [ 43.123581] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (8833) executing program [ 43.176286] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by systemd-udevd (8835) [ 43.236312] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8841) executing program [ 43.292642] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8843) [ 43.329381] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by syz-executor506 (8854) executing program [ 43.396278] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by systemd-udevd (8891) [ 43.467368] BTRFS info (device loop1): clearing free space tree [ 43.473472] BTRFS info (device loop1): clearing 1 ro feature flag [ 43.498752] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (8876) [ 43.506124] BTRFS info (device loop1): clearing 2 ro feature flag executing program [ 43.535942] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (8835) [ 43.556065] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor506 (8875) executing program [ 43.636244] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (8839) [ 43.686126] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (8888) executing program [ 43.736084] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by systemd-udevd (8891) [ 43.816119] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8835) [ 43.896936] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by syz-executor506 (8898) [ 43.908907] BTRFS info (device loop5): enabling inode map caching [ 43.915141] BTRFS info (device loop5): force clearing of disk cache [ 43.931407] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by systemd-udevd (8843) executing program [ 43.936317] BTRFS info (device loop5): disabling free space tree [ 43.966038] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (8909) [ 43.985964] BTRFS info (device loop5): has skinny extents executing program executing program [ 44.026545] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (8839) [ 44.078382] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor506 (8914) executing program [ 44.146041] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (8835) [ 44.188173] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (8919) executing program [ 44.241096] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by systemd-udevd (8843) [ 44.291565] BTRFS info (device loop5): clearing free space tree [ 44.309742] BTRFS info (device loop5): clearing 1 ro feature flag [ 44.329845] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by syz-executor506 (8929) executing program [ 44.350124] BTRFS info (device loop5): clearing 2 ro feature flag [ 44.357150] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by systemd-udevd (8839) executing program [ 44.470455] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (8941) [ 44.492775] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (8891) executing program [ 44.607731] BTRFS info (device loop1): enabling inode map caching [ 44.635820] BTRFS info (device loop1): force clearing of disk cache [ 44.665853] BTRFS info (device loop1): disabling free space tree [ 44.696181] BTRFS info (device loop1): has skinny extents executing program [ 44.750364] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor506 (8961) [ 44.778614] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by syz-executor506 (8971) [ 44.818473] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (8993) executing program [ 44.859114] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (8964) executing program [ 44.915678] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by systemd-udevd (8997) [ 44.951230] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by systemd-udevd (9003) executing program [ 44.997747] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (8978) [ 45.046895] BTRFS info (device loop1): clearing free space tree [ 45.065959] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (9024) [ 45.067791] BTRFS info (device loop1): clearing 1 ro feature flag [ 45.098628] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor506 (9007) [ 45.121887] BTRFS info (device loop1): clearing 2 ro feature flag executing program [ 45.165072] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (8993) [ 45.193109] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (8987) [ 45.222552] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (8997) executing program [ 45.363009] BTRFS info (device loop0): enabling inode map caching [ 45.388908] BTRFS info (device loop0): force clearing of disk cache [ 45.422975] BTRFS info (device loop0): disabling free space tree [ 45.454490] BTRFS info (device loop0): has skinny extents executing program [ 45.467005] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (9029) [ 45.510896] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (8997) [ 45.543118] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (9022) executing program executing program executing program [ 45.608904] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by syz-executor506 (9038) [ 45.638817] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by systemd-udevd (9024) [ 45.669839] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (9045) executing program [ 45.719964] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 8 scanned by systemd-udevd (8993) [ 45.750195] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (9003) [ 45.791987] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by syz-executor506 (9054) [ 45.825616] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by systemd-udevd (8997) executing program [ 45.846605] BTRFS info (device loop0): clearing free space tree [ 45.852900] BTRFS info (device loop0): clearing 1 ro feature flag [ 45.887369] BTRFS info (device loop0): clearing 2 ro feature flag [ 46.108558] BTRFS info (device loop3): enabling inode map caching [ 46.123016] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (9082) [ 46.136188] BTRFS info (device loop3): force clearing of disk cache executing program [ 46.159546] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (9086) [ 46.166196] BTRFS info (device loop3): disabling free space tree [ 46.196289] BTRFS info (device loop3): has skinny extents executing program [ 46.198126] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by systemd-udevd (9112) executing program [ 46.240980] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by systemd-udevd (9108) [ 46.296101] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by systemd-udevd (9106) [ 46.336972] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 8 scanned by syz-executor506 (9091) executing program [ 46.406702] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by syz-executor506 (9099) [ 46.440399] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 8 scanned by systemd-udevd (9118) executing program [ 46.489365] BTRFS info (device loop3): clearing free space tree [ 46.505620] BTRFS info (device loop3): clearing 1 ro feature flag [ 46.533028] BTRFS info (device loop3): clearing 2 ro feature flag [ 46.614427] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by syz-executor506 (9117) [ 46.643889] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 8 scanned by systemd-udevd (9106) executing program [ 46.671939] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 8 scanned by syz-executor506 (9132) executing program [ 46.725410] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 8 scanned by syz-executor506 (9121) executing program executing program