On Mon, Dec 20, 2021 at 10:36:56AM -0500, Theodore Ts'o wrote:
The following commits were cherry-picked from upstream to fix a crash in ext4/054. There was a minor fix-up needed in the first patch, although no other changes were needed for the 2nd and 3rd patches.
Ext4/054 will cause older LTS kernels to crash, but unfortunately these patches will need further back-porting to apply to 5.4, never mind older LTS kernels. But at least here are the fixes for 5.10....
Zhang Yi (3): ext4: prevent partial update of the extent blocks ext4: check for out-of-order index extents in ext4_valid_extent_entries() ext4: check for inconsistent extents between index and leaf block
fs/ext4/extents.c | 93 ++++++++++++++++++++++++++++++++--------------- 1 file changed, 63 insertions(+), 30 deletions(-)
-- 2.31.0
I also had to apply them to 5.15.y as you do not want people to upgrade and have a regression.
thanks,
greg k-h