From: Baokun Li libaokun1@huawei.com
hulk inclusion category: bugfix bugzilla: 187935,https://gitee.com/src-openeuler/kernel/issues/I5ZR8Z CVE: NA
--------------------------------
When online resizing is performed twice consecutively, the error message "Superblock checksum does not match superblock" is displayed for the second time. Here's the reproducer:
mkfs.ext4 -F /dev/sdb 100M mount /dev/sdb /tmp/test resize2fs /dev/sdb 5G resize2fs /dev/sdb 6G
To solve this issue, we moved the update of the checksum after the es->s_overhead_clusters is updated.
Fixes: 026d0d27c488 ("ext4: reduce computation of overhead during resize") Fixes: de394a86658f ("ext4: update s_overhead_clusters in the superblock during an on-line resize") Signed-off-by: Baokun Li libaokun1@huawei.com Reviewed-by: Zhang Yi yi.zhang@huawei.com Signed-off-by: Yongqiang Liu liuyongqiang13@huawei.com --- fs/ext4/resize.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index bc870561e394..f2b881aaf0b1 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -1442,8 +1442,6 @@ static void ext4_update_super(struct super_block *sb, * active. */ ext4_r_blocks_count_set(es, ext4_r_blocks_count(es) + reserved_blocks); - ext4_superblock_csum_set(sb); - unlock_buffer(sbi->s_sbh);
/* Update the free space counts */ percpu_counter_add(&sbi->s_freeclusters_counter, @@ -1471,6 +1469,8 @@ static void ext4_update_super(struct super_block *sb, ext4_calculate_overhead(sb); es->s_overhead_clusters = cpu_to_le32(sbi->s_overhead);
+ ext4_superblock_csum_set(sb); + unlock_buffer(sbi->s_sbh); if (test_opt(sb, DEBUG)) printk(KERN_DEBUG "EXT4-fs: added group %u:" "%llu blocks(%llu free %llu reserved)\n", flex_gd->count,
-
Yongqiang Liu