Re: [PATCH v3 3/5] multipath-tools tests: add test program for thread runners

On Tue, Apr 28, 2026 at 01:49:40PM +0200, Martin Wilck wrote:
> Add a test program for the "runner" thread implementation from the previous
> commit. The test program runs simulated "hanging" threads that may time
> out, and optionally kills all threads at an arbitrary point in time. See
> the comments at the top of the file for details.
> 
> Also add a test driver script (runner-test.sh) with a few reasonable
> combinations of command line arguments.
> 
> The test program has been used to test the "runner" implementation
> extensively on different architectures (x86_64, aarch64, ppc64le, s390x),
> using both valgrind and the gcc address sanitizer (libasan) for detection
> of memory leaks and use-after-free errors.
> 
> For valgrind, a suppression file needs to be added, as valgrind doesn't
> seem to capture the deallocation of thread local storage for detached
> threads in the test case where the test program is killed. The suppression
> affects only memory allocated by glibc. This leak has not been seen with
> libasan, only with valgrind.
> 
> Signed-off-by: Martin Wilck <[email protected]>

Reviewed-by: Benjamin Marzinski <[email protected]>