On Sat, Sep 03, 2022 at 07:55:16 AM +1000, Dave Chinner wrote: > On Thu, Sep 01, 2022 at 06:55:31PM +0530, Chandan Babu R wrote: >> Hi Dave, >> >> 7684e2c4384d5d1f884b01ab8bff2369e4db0bff >> (https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7684e2c4384d5d1f884b01ab8bff2369e4db0bff) >> is one of the commits that needs to be backported to 5.4.y stable kernel. >> >> The commit message mentions that we could have written extents beyond EOF. I >> am unable to come up with a sequence of commands that could create such >> extents. >> >> Can you please explain how a user could create a file having written extents >> beyond EOF? > > That bug fix was committed in v5.5. We didn't convert delalloc to > use unwritten extents until v5.8 via commit a5949d3faedf. > Ok. Thanks for clarifying my doubt. I can now recreate the bug on my test machine when running v5.4 LTS kernel. -- chandan
