Hello, I have a Samsung Chromebook Plus (rk3399-gru-kevin) which boots linux off an external ssd plugged into USB. The root filesystem is ext4 with unicode support, case folding is enabled only on some directories in my home directory. Since 5.17 the system has been unbootable. I ran a git bisect and it pointed to aa8bf298a96acaaaa3af07d09cf7ffeb9798e48a ext4: simplify ext4_sb_read_encoding Unfortunately reverting that commit alone did not make 5.17 bootable, and reverting the whole patch series conflicts with later changes. tune2fs 1.46.5 (30-Dec-2021) Filesystem volume name: <none> Last mounted on: /mnt/chrome Filesystem UUID: 8b5e21f1-3d26-4340-8326-d5a3e54f89fc Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent 64bit flex_bg casefold sparse_super large_file huge_file dir_nlink extra_isize metadata_csum Filesystem flags: signed_directory_hash Default mount options: user_xattr acl Filesystem state: clean Errors behavior: Continue Filesystem OS type: Linux Inode count: 30523392 Block count: 122087425 Reserved block count: 6104371 Overhead clusters: 2196820 Free blocks: 108560118 Free inodes: 29690527 First block: 0 Block size: 4096 Fragment size: 4096 Group descriptor size: 64 Reserved GDT blocks: 1024 Blocks per group: 32768 Fragments per group: 32768 Inodes per group: 8192 Inode blocks per group: 512 Flex block group size: 16 Filesystem created: Sun Apr 24 18:30:23 2022 Last mount time: Sat May 28 18:45:39 2022 Last write time: Sat May 28 18:45:39 2022 Mount count: 118 Maximum mount count: -1 Last checked: Sun Apr 24 18:30:23 2022 Check interval: 0 (<none>) Lifetime writes: 96 GB Reserved blocks uid: 0 (user root) Reserved blocks gid: 0 (group root) First inode: 11 Inode size: 256 Required extra isize: 32 Desired extra isize: 32 Journal inode: 8 Default directory hash: half_md4 Directory Hash Seed: 4973c679-1148-4fa4-b450-2bd335cee42d Journal backup: inode blocks Checksum type: crc32c Checksum: 0x9480930d Character encoding: utf8-12.1