Re: [PATCH 6.6.y 0/2] jbd2: backport CVE-2026-89566, CVE-2026-89567

From: Theodore Tso

Date: Sat Oct 10 2026 - 19:55:01 EST


On Sat, Oct 10, 2026 at 06:12:10PM -0500, Artem Dinaburg wrote:
>
> Our initial unpatched/patched runs showed some differences in both
> directions. We cannot yet attribute those to the series, so we have
> paused the patched comparison and are running three complete
> iterations on the same unpatched baseline to assess repeatability.

Note that some tests can be flaky. So when you see a test failure, it
can be useful to run a test multiple times, so you can see if the test
is a reliable hard failure, or one that only fails, say, 30% of the
time. So to run generic/363 10 times in the ext4/1k configuration,
you might do soemthing like this:

kvm-xfstests -c ext4/1k generic/363 -C 10

- Ted