https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264441
Bug ID: 264441
Summary: Hang with Valgrind on single CPU systems
Product: Base System
Version: 13.1-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
There are a lot more details here:
https://github.com/paulfloyd/freebsd_valgrind/issues/189
https://github.com/paulfloyd/freebsd_valgrind/issues/188
and discussion here
https://lists.freebsd.org/archives/freebsd-hackers/2022-May/001154.html
It may be somewhat difficult to reproduce the error as it may be quite timing
dependent.
Steps to reproduce:
Most importantly, you need a single CPU i386 or amd64 system. That's possible
with VirtualBox.
Clone and build the Valgrind source and regressions tests.
clone git://sourceware.org/git/valgrind.git
Backout a workaround for one of the issues
$ git revert a4151207a28b506cdd1e7c095e4aebaaf289a384
Make sure that you have the ports for autoconf, automake, libtool and gmake
installed.
Run the folllowing comamnds
If you have GCC installed you need to set the environment variables CC=clang
CXX=clang++
$ sh autogen.sh
$ ./configure
$ gmake
$ gmake check
Now you can try the two testcases that were causing problems
$ perl tests/vg_regtest none/tests/tls
and
$ perl tests/vg_regtest none/tests/pth_2sig
If you want to run Valgrind without any wrapper scripts then do the following
export VALGRIND_LAUNCHER=YOUR_PATH/valgrind/coregrind/valgrind
export VALGRIND_LIB=YOUR_PATH/valgrind/.in_place
export VALGRIND_LIB_INNER=YOUR_PATH/valgrind/.in_place
(where YOUR_PATH/valgrind is the path to the git repo cloned above)
cd to none/tests
Run
../../.in_place/none-amd64-freebsd --tool=none ./tls
or
../../.in_place/none-amd64-freebsd --tool=none ./pth_2sig
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