Re: [PATCH 5.8 108/177] gcov: Disable gcov build with GCC 10

Sasha Levin
2020-09-15T18:43:27Z

On Tue, Sep 15, 2020 at 10:24:25AM -0700, Linus Torvalds wrote:
>On Tue, Sep 15, 2020 at 7:28 AM Greg Kroah-Hartman
><gregkh@linuxfoundation.org> wrote:
>>
>> GCOV built with GCC 10 doesn't initialize n_function variable. This
>> produces different kernel panics as was seen by Colin in Ubuntu and me
>> in FC 32.
>>
>> As a workaround, let's disable GCOV build for broken GCC 10 version.
>
>Oh, Peter Oberparleiter actually figured out what was wrong, and we
>have commit 40249c696207 ("gcov: add support for GCC 10.1") upstream
>that enables it again with the fix for the changed semantics in
>gcc-10.

AUTOSEL spotted it
(https://lore.kernel.org/stable/20200914130358.1804194-27-sashal@kernel.org/),
and I didn't want to rush it in given it doesn't have a fixes/stable
tag.

I'll queue it up for this cycle as you've pointed it out.

--
Thanks,
Sasha