summaryrefslogtreecommitdiffstats
path: root/fs
diff options
context:
space:
mode:
authorSébastien Szymanski <sebastien.szymanski@armadeus.com>2019-03-22 09:33:52 +0100
committerTom Rini <trini@konsulko.com>2019-03-22 12:15:24 -0400
commit2e7365518acdb8fb6e9be332c8a6c57b457188d9 (patch)
tree5951f299b8b05cb6011deb8522a8b883a5d260e2 /fs
parent50580a0e7053599abdaa467cb43cff0c66564369 (diff)
downloadu-boot-2e7365518acdb8fb6e9be332c8a6c57b457188d9.tar.gz
u-boot-2e7365518acdb8fb6e9be332c8a6c57b457188d9.tar.xz
u-boot-2e7365518acdb8fb6e9be332c8a6c57b457188d9.zip
fs: ext4: do not write on filesystem with metadata_csum feature
U-Boot doesn't support metadata_csum feature. Writing to filesystem with metadata_csum feature makes the filesystem corrupted and unbootable by Linux: [ 2.527495] EXT4-fs (mmcblk0p2): ext4_check_descriptors: Checksum for group 0 failed (52188!=0) [ 2.537421] EXT4-fs (mmcblk0p2): ext4_check_descriptors: Checksum for group 1 failed (5262!=0) ... [ 2.653308] EXT4-fs (mmcblk0p2): ext4_check_descriptors: Checksum for group 14 failed (42611!=0) [ 2.662179] EXT4-fs (mmcblk0p2): ext4_check_descriptors: Checksum for group 15 failed (21527!=0) [ 2.687920] JBD2: journal checksum error [ 2.691982] EXT4-fs (mmcblk0p2): error loading journal [ 2.698292] VFS: Cannot open root device "mmcblk0p2" or unknown-block(179,2): error -74 Don't write to filesystem with meatadata_csum feature to not corrupt the filesystem. Signed-off-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/ext4/ext4_write.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/ext4/ext4_write.c b/fs/ext4/ext4_write.c
index a7f543f7df..4eb77c327e 100644
--- a/fs/ext4/ext4_write.c
+++ b/fs/ext4/ext4_write.c
@@ -864,6 +864,12 @@ int ext4fs_write(const char *fname, unsigned char *buffer,
printf("error in File System init\n");
return -1;
}
+
+ if (le32_to_cpu(fs->sb->feature_ro_compat) & EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) {
+ printf("Unsupported feature metadata_csum found, not writing.\n");
+ return -1;
+ }
+
inodes_per_block = fs->blksz / fs->inodesz;
parent_inodeno = ext4fs_get_parent_inode_num(fname, filename, F_FILE);
if (parent_inodeno == -1)