Hi,
This patch set is intended for stable/linux-5.{15, 10}.y. The patches applied cleanly without deviations from the original upstream patches. The last patch is fixing the bug reported at [1]. The other three are prerequisites for the last commit. I tested the patches and I confirm that the reproducer no longer complains on linux-5.{15, 10}.y. Older LTS kernels have more dependencies, let's fix these until I sort out what else should be backported for the older LTS kernels.
[1] LINK: https://syzkaller.appspot.com/bug?id=5266d464285a03cee9dbfda7d2452a72c3c2ae7...
Cheers, ta
Lukas Czerner (1): ext4: block range must be validated before use in ext4_mb_clear_bb()
Ritesh Harjani (3): ext4: refactor ext4_free_blocks() to pull out ext4_mb_clear_bb() ext4: add ext4_sb_block_valid() refactored out of ext4_inode_block_valid() ext4: add strict range checks while freeing blocks
fs/ext4/block_validity.c | 26 +++-- fs/ext4/ext4.h | 3 + fs/ext4/mballoc.c | 205 +++++++++++++++++++++++---------------- 3 files changed, 139 insertions(+), 95 deletions(-)