On Thu, 14 Jul 2022 18:59:03 +0200, Lukas Czerner wrote: > Block range to free is validated in ext4_free_blocks() using > ext4_inode_block_valid() and then it's passed to ext4_mb_clear_bb(). > However in some situations on bigalloc file system the range might be > adjusted after the validation in ext4_free_blocks() which can lead to > troubles on corrupted file systems such as one found by syzkaller that > resulted in the following BUG > > [...] Applied, thanks! [1/1] ext4: block range must be validated before use in ext4_mb_clear_bb() commit: 91e204c46741b198693dd88bd7b03a5b5fe0ce17 Best regards, -- Theodore Ts'o <tytso@xxxxxxx>