Re: [PATCH 0/3] livepatch: cleanup kpl_patch kobject release

[Ming Lei]

On Fri, Oct 29, 2021 at 09:51:54AM -0400, Joe Lawrence wrote:
> On Thu, Oct 28, 2021 at 08:57:31PM +0800, Ming Lei wrote:
> > Hello,
> >
> > The 1st patch moves module_put() to release handler of klp_patch
> > kobject.
> >
> > The 2nd patch changes to free klp_patch and other kobjects without
> > klp_mutex.
> >
> > The 3rd patch switches to synchronous kobject release for klp_patch.
> >
> 
> Hi Ming,
> 
> I gave the patchset a spin on top of linus tree @ 1fc596a56b33 and ended
> up with a stuck task:
> 
> Test
> ----
> Enable the livepatch selftests:
>   $ grep CONFIG_TEST_LIVEPATCH .config
>   CONFIG_TEST_LIVEPATCH=m
> 
> Run a continuous kernel build in the background:
>   $ while (true); do make clean && make -j$(nproc); done
> 
> While continuously executing the selftests:
>   $ while (true); do make -C tools/testing/selftests/livepatch/ run_tests; done
> 
> Results
> -------

Hello Joe,

Thanks for the test!

Can you replace the 3rd patch with the following one then running the test again?