static int ext4_sync_fs(struct super_block *sb, int wait)
{
	int ret = 0;
	tid_t target;
	struct ext4_sb_info *sbi = EXT4_SB(sb);

	trace_ext4_sync_fs(sb, wait);
	flush_workqueue(sbi->dio_unwritten_wq);
	if (jbd2_journal_start_commit(sbi->s_journal, &target)) {
		if (wait)
			jbd2_log_wait_commit(sbi->s_journal, target);
	}
	return ret;
}

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.