--- fs/ext4/resize.c

+++ fs/ext4/resize.c

@@ -930,7 +930,8 @@ int ext4_group_add(struct super_block *s

percpu_counter_add(&sbi->s_freeinodes_counter,

EXT4_INODES_PER_GROUP(sb));

- if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {

+ if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG) &&

+ sbi->s_log_groups_per_flex) {

ext4_group_t flex_group;

flex_group = ext4_flex_group(sbi, input->group);

atomic_add(input->free_blocks_count,