On Sat, Jul 03, 2021 at 04:05:55PM -0700, Tahsin Erdogan wrote:
Mainline commit ce9f24cccdc0 ("ext4: check journal inode extents more carefully") enabled validity checks for journal inode's data blocks. This change got ported to stable branches, but the backport for 4.19 has a bug where it will flag an error even when system block entry's inode number matches journal inode.
Tahsin,
If I understand the commit description, this patch is only intended for the 4.19 stable kernel. If this is the case, I'd suggest using the Subject prefix [PATCH 4.19] for future patches. This is more likely to be clearer (via a quick glance at the Subject line) for subsystem maintainers, as well as for stable kernel maintainers, that this is meant for the stable kernel. It would perhaps also be useful if you could indicate whether a similar fix is needed for 4.14, and other older LTS kernels, or whether the only stable backport which had this bug was 4.19.
Cheers,
- Ted
P.S. Great to see you've landed at Amazon! It's been a while; if I have a chance to make it out to Seattle, one of these days, it would be great to catch up.