[PATCHSET,0/2] fstests: improve coredump capture and storage

Message

Darrick J. Wong Oct. 5, 2022, 10:31 p.m. UTC

Hi all,

While I was debugging some core dumps resulting from xfs_repair fuzz
testing, I noticed that fstests was no longer putting core dumps into
the test results directory.  The root cause of this turned out to be
that systemd enables kernel.core_uses_pid, which changes the core
pattern from "core" to "core.$pid".  This is a good change since we can
now capture *all* the coredumps produced by a test, but bad in that the
check script doesn't know about this.

Therefore, fix check to detect multiple corefiles and preserve them, and
compress coredumps if desired.

If you're going to start using this mess, you probably ought to just
pull from my git trees, which are linked below.

This is an extraordinary way to destroy everything.  Enjoy!
Comments and questions are, as always, welcome.

--D

fstests git tree:
https://git.kernel.org/cgit/linux/kernel/git/djwong/xfstests-dev.git/log/?h=compress-core-dumps
---
 README    |    1 +
 check     |   26 ++++++++++++++++++++++----
 common/rc |   29 +++++++++++++++++++++++++++++
 3 files changed, 52 insertions(+), 4 deletions(-)