====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.1/18644 is trying to acquire lock: 00000000b50b51eb (&sb->s_type->i_mutex_key#10){++++}, at: inode_lock include/linux/fs.h:748 [inline] 00000000b50b51eb (&sb->s_type->i_mutex_key#10){++++}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 but task is already holding lock: 0000000015d97662 (loop_ctl_mutex){+.+.}, at: loop_set_fd drivers/block/loop.c:956 [inline] 0000000015d97662 (loop_ctl_mutex){+.+.}, at: lo_ioctl+0x1bb/0x20e0 drivers/block/loop.c:1576 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #7 (loop_ctl_mutex){+.+.}: lo_open+0x19/0xd0 drivers/block/loop.c:1771 __blkdev_get+0x372/0x1480 fs/block_dev.c:1494 blkdev_get+0xb0/0x940 fs/block_dev.c:1627 blkdev_open+0x202/0x290 fs/block_dev.c:1788 do_dentry_open+0x4aa/0x1160 fs/open.c:796 do_last fs/namei.c:3421 [inline] path_openat+0x793/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #6 (&bdev->bd_mutex){+.+.}: blkdev_put+0x30/0x520 fs/block_dev.c:1839 btrfs_close_bdev fs/btrfs/volumes.c:1033 [inline] btrfs_close_one_device fs/btrfs/volumes.c:1057 [inline] close_fs_devices.part.0+0x24d/0x8e0 fs/btrfs/volumes.c:1085 close_fs_devices fs/btrfs/volumes.c:1117 [inline] btrfs_close_devices+0x95/0x1f0 fs/btrfs/volumes.c:1103 close_ctree+0x3c8/0x850 fs/btrfs/disk-io.c:4047 generic_shutdown_super+0x144/0x370 fs/super.c:456 kill_anon_super+0x36/0x60 fs/super.c:1032 btrfs_kill_super+0x49/0x550 fs/btrfs/super.c:2221 deactivate_locked_super+0x94/0x160 fs/super.c:329 deactivate_super+0x174/0x1a0 fs/super.c:360 cleanup_mnt+0x1a8/0x290 fs/namespace.c:1098 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #5 (&fs_devs->device_list_mutex){+.+.}: btrfs_run_dev_stats+0xbb/0xa80 fs/btrfs/volumes.c:7111 commit_cowonly_roots+0x1ce/0xc30 fs/btrfs/transaction.c:1172 btrfs_commit_transaction+0x94a/0x2480 fs/btrfs/transaction.c:2218 btrfs_clear_free_space_tree+0x69d/0xa50 fs/btrfs/free-space-tree.c:1255 open_ctree.cold+0x30/0xc3d fs/btrfs/disk-io.c:3203 btrfs_fill_super fs/btrfs/super.c:1209 [inline] btrfs_mount_root+0x12e5/0x1830 fs/btrfs/super.c:1613 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount+0x3c/0x60 fs/namespace.c:951 btrfs_mount+0x23a/0xaa0 fs/btrfs/super.c:1681 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x115c/0x2f50 fs/namespace.c:2822 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #4 (&fs_info->tree_log_mutex){+.+.}: btrfs_commit_transaction+0x8c2/0x2480 fs/btrfs/transaction.c:2176 btrfs_clear_free_space_tree+0x69d/0xa50 fs/btrfs/free-space-tree.c:1255 open_ctree.cold+0x30/0xc3d fs/btrfs/disk-io.c:3203 btrfs_fill_super fs/btrfs/super.c:1209 [inline] btrfs_mount_root+0x12e5/0x1830 fs/btrfs/super.c:1613 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount+0x3c/0x60 fs/namespace.c:951 btrfs_mount+0x23a/0xaa0 fs/btrfs/super.c:1681 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x115c/0x2f50 fs/namespace.c:2822 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #3 (&fs_info->reloc_mutex){+.+.}: btrfs_commit_transaction+0x80b/0x2480 fs/btrfs/transaction.c:2120 btrfs_clear_free_space_tree+0x69d/0xa50 fs/btrfs/free-space-tree.c:1255 open_ctree.cold+0x30/0xc3d fs/btrfs/disk-io.c:3203 btrfs_fill_super fs/btrfs/super.c:1209 [inline] btrfs_mount_root+0x12e5/0x1830 fs/btrfs/super.c:1613 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount+0x3c/0x60 fs/namespace.c:951 btrfs_mount+0x23a/0xaa0 fs/btrfs/super.c:1681 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x115c/0x2f50 fs/namespace.c:2822 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #2 (sb_internal#3){.+.+}: sb_start_intwrite include/linux/fs.h:1626 [inline] start_transaction+0xa37/0xf90 fs/btrfs/transaction.c:528 btrfs_dirty_inode+0xe3/0x210 fs/btrfs/inode.c:6165 btrfs_update_time+0x33b/0x3d0 fs/btrfs/inode.c:6207 update_time fs/inode.c:1675 [inline] touch_atime+0x23c/0x2a0 fs/inode.c:1746 file_accessed include/linux/fs.h:2123 [inline] btrfs_file_mmap+0x11b/0x160 fs/btrfs/file.c:2274 call_mmap include/linux/fs.h:1826 [inline] mmap_region+0xc94/0x16b0 mm/mmap.c:1757 do_mmap+0x8e8/0x1080 mm/mmap.c:1530 do_mmap_pgoff include/linux/mm.h:2329 [inline] vm_mmap_pgoff+0x197/0x200 mm/util.c:357 ksys_mmap_pgoff+0x298/0x5a0 mm/mmap.c:1580 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (&mm->mmap_sem){++++}: __do_page_fault+0x97f/0xd60 arch/x86/mm/fault.c:1348 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 fault_in_pages_readable include/linux/pagemap.h:602 [inline] iov_iter_fault_in_readable+0x18b/0x3f0 lib/iov_iter.c:421 generic_perform_write+0x15d/0x4d0 mm/filemap.c:3160 __generic_file_write_iter+0x24b/0x610 mm/filemap.c:3295 ext4_file_write_iter+0x2fe/0xf20 fs/ext4/file.c:272 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x51b/0x770 fs/read_write.c:487 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&sb->s_type->i_mutex_key#10){++++}: down_write+0x34/0x90 kernel/locking/rwsem.c:70 inode_lock include/linux/fs.h:748 [inline] __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 ext4_sync_file+0xa35/0x1420 fs/ext4/fsync.c:118 vfs_fsync_range fs/sync.c:197 [inline] vfs_fsync+0x127/0x1f0 fs/sync.c:211 __loop_update_dio+0x4cd/0x690 drivers/block/loop.c:209 loop_update_dio drivers/block/loop.c:636 [inline] loop_set_fd drivers/block/loop.c:1000 [inline] lo_ioctl+0xeee/0x20e0 drivers/block/loop.c:1576 __blkdev_driver_ioctl block/ioctl.c:303 [inline] blkdev_ioctl+0x5cb/0x1a80 block/ioctl.c:601 block_ioctl+0xe9/0x130 fs/block_dev.c:1906 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: &sb->s_type->i_mutex_key#10 --> &bdev->bd_mutex --> loop_ctl_mutex Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(loop_ctl_mutex); lock(&bdev->bd_mutex); lock(loop_ctl_mutex); lock(&sb->s_type->i_mutex_key#10); *** DEADLOCK *** 1 lock held by syz-executor.1/18644: #0: 0000000015d97662 (loop_ctl_mutex){+.+.}, at: loop_set_fd drivers/block/loop.c:956 [inline] #0: 0000000015d97662 (loop_ctl_mutex){+.+.}, at: lo_ioctl+0x1bb/0x20e0 drivers/block/loop.c:1576 stack backtrace: CPU: 0 PID: 18644 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1222 check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1979 [inline] validate_chain kernel/locking/lockdep.c:2420 [inline] __lock_acquire+0x30c9/0x3ff0 kernel/locking/lockdep.c:3416 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 down_write+0x34/0x90 kernel/locking/rwsem.c:70 inode_lock include/linux/fs.h:748 [inline] __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989 ext4_sync_file+0xa35/0x1420 fs/ext4/fsync.c:118 vfs_fsync_range fs/sync.c:197 [inline] vfs_fsync+0x127/0x1f0 fs/sync.c:211 __loop_update_dio+0x4cd/0x690 drivers/block/loop.c:209 loop_update_dio drivers/block/loop.c:636 [inline] loop_set_fd drivers/block/loop.c:1000 [inline] lo_ioctl+0xeee/0x20e0 drivers/block/loop.c:1576 __blkdev_driver_ioctl block/ioctl.c:303 [inline] blkdev_ioctl+0x5cb/0x1a80 block/ioctl.c:601 block_ioctl+0xe9/0x130 fs/block_dev.c:1906 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f4bcca790c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 RSP: 002b:00007f4bcafeb168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f4bccb98f80 RCX: 00007f4bcca790c9 RDX: 000000000000000c RSI: 0000000000004c00 RDI: 000000000000000b RBP: 00007f4bccad4ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe03ed9eef R14: 00007f4bcafeb300 R15: 0000000000022000 IPVS: ftp: loaded support on port[0] = 21 overlayfs: unrecognized mount option "index=ogf" or missing value audit: type=1804 audit(1673105204.562:121): pid=18666 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir983802041/syzkaller.llEgNd/162/bus" dev="sda1" ino=13878 res=1 audit: type=1804 audit(1673105204.662:122): pid=18773 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir983802041/syzkaller.llEgNd/162/bus" dev="sda1" ino=13878 res=1 audit: type=1804 audit(1673105205.452:123): pid=18804 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir983802041/syzkaller.llEgNd/163/bus" dev="sda1" ino=13896 res=1 audit: type=1804 audit(1673105205.462:124): pid=18812 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir983802041/syzkaller.llEgNd/163/bus" dev="sda1" ino=13896 res=1 audit: type=1804 audit(1673105205.862:125): pid=18860 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir983802041/syzkaller.llEgNd/164/bus" dev="sda1" ino=14036 res=1 audit: type=1804 audit(1673105205.862:126): pid=18857 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir983802041/syzkaller.llEgNd/164/bus" dev="sda1" ino=14036 res=1 REISERFS (device loop4): found reiserfs format "3.5" with non-standard journal REISERFS (device loop4): using ordered data mode reiserfs: using flush barriers REISERFS (device loop4): journal params: device loop4, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop4): checking transaction log (loop4) REISERFS (device loop4): Using r5 hash to sort names REISERFS (device loop4): using 3.5.x disk format REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage. audit: type=1804 audit(1673105206.262:127): pid=18863 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir1062334064/syzkaller.hCrhXC/165/file0/bus" dev="loop4" ino=2 res=1 audit: type=1800 audit(1673105206.262:128): pid=18863 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="loop4" ino=2 res=0 overlayfs: unrecognized mount option "index=ogf" or missing value audit: type=1804 audit(1673105206.762:129): pid=18884 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir1062334064/syzkaller.hCrhXC/166/bus" dev="sda1" ino=14181 res=1 audit: type=1800 audit(1673105206.792:130): pid=18884 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="sda1" ino=14181 res=0 REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "" REISERFS (device loop4): found reiserfs format "3.5" with non-standard journal REISERFS (device loop4): using ordered data mode reiserfs: using flush barriers REISERFS (device loop4): journal params: device loop4, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop4): checking transaction log (loop4) REISERFS (device loop4): Using r5 hash to sort names REISERFS (device loop4): using 3.5.x disk format REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage. EXT4-fs warning (device sda1): ext4_resize_begin:72: There are errors in the filesystem, so online resizing is not allowed EXT4-fs warning (device sda1): ext4_resize_begin:72: There are errors in the filesystem, so online resizing is not allowed kauditd_printk_skb: 10 callbacks suppressed audit: type=1804 audit(1673105209.772:141): pid=19142 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir983802041/syzkaller.llEgNd/171/bus" dev="sda1" ino=14904 res=1 EXT4-fs warning (device sda1): ext4_resize_begin:72: There are errors in the filesystem, so online resizing is not allowed audit: type=1804 audit(1673105209.902:142): pid=19158 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="/root/syzkaller-testdir983802041/syzkaller.llEgNd/171/bus" dev="sda1" ino=14904 res=1 audit: type=1804 audit(1673105210.092:143): pid=19166 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="/root/syzkaller-testdir983802041/syzkaller.llEgNd/171/bus" dev="sda1" ino=14904 res=1 audit: type=1804 audit(1673105210.202:144): pid=19177 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir1922127339/syzkaller.pkO20i/158/bus" dev="sda1" ino=14908 res=1 audit: type=1804 audit(1673105210.222:145): pid=19177 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir1922127339/syzkaller.pkO20i/158/bus" dev="sda1" ino=14908 res=1 FAT-fs (loop4): Directory bread(block 64) failed FAT-fs (loop4): Directory bread(block 65) failed audit: type=1804 audit(1673105210.232:146): pid=19177 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir1922127339/syzkaller.pkO20i/158/bus" dev="sda1" ino=14908 res=1 FAT-fs (loop4): Directory bread(block 66) failed FAT-fs (loop4): Directory bread(block 67) failed FAT-fs (loop4): Directory bread(block 68) failed FAT-fs (loop4): Directory bread(block 69) failed FAT-fs (loop4): Directory bread(block 70) failed audit: type=1804 audit(1673105210.322:147): pid=19187 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.1" name="/root/syzkaller-testdir1922127339/syzkaller.pkO20i/158/bus" dev="sda1" ino=14908 res=1 FAT-fs (loop4): Directory bread(block 71) failed FAT-fs (loop4): Directory bread(block 72) failed FAT-fs (loop4): Directory bread(block 73) failed audit: type=1804 audit(1673105211.043:148): pid=19229 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir983802041/syzkaller.llEgNd/172/bus" dev="sda1" ino=14888 res=1 audit: type=1804 audit(1673105211.053:149): pid=19228 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="/root/syzkaller-testdir983802041/syzkaller.llEgNd/172/bus" dev="sda1" ino=14888 res=1 audit: type=1800 audit(1673105211.143:150): pid=19237 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=14889 res=0 attempt to access beyond end of device loop4: rw=1, want=5896, limit=256 attempt to access beyond end of device loop4: rw=1, want=5964, limit=256 FAT-fs (loop4): Directory bread(block 64) failed FAT-fs (loop4): Directory bread(block 65) failed FAT-fs (loop4): Directory bread(block 66) failed FAT-fs (loop4): Directory bread(block 67) failed FAT-fs (loop4): Directory bread(block 68) failed FAT-fs (loop4): Directory bread(block 69) failed FAT-fs (loop4): Directory bread(block 70) failed FAT-fs (loop4): Directory bread(block 71) failed FAT-fs (loop4): Directory bread(block 72) failed FAT-fs (loop4): Directory bread(block 73) failed IPVS: ftp: loaded support on port[0] = 21 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 IPVS: ftp: loaded support on port[0] = 21