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Mainline commitce9f24cccd("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. The way error is reported is also problematic because it updates the superblock without following journaling rules. This may result in superblock checksum errors if the superblock is in the process of being committed but has a previously calculated checksum that doesn't include the bogus error update. This patch eliminates the bogus error by trying to match how other backports were implemented, which is to flag an error only when inode numbers mismatch. Fixes: commita75a5d1638("ext4: check journal inode extents more carefully") Signed-off-by: Tahsin Erdogan <trdgn@amazon.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.