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From:   Anatoly Pugachev <matorola@gmail.com>
Date:   Sat, 1 Feb 2020 14:57:41 +0300
Message-ID: <CADxRZqwBPJVa9EBeP2++bojgiJ-K1s+3LCm_Y2_KT4wDcUGZeg@mail.gmail.com>
Subject: Re: [sparc64] stall on CPU with current git master
To:     Arnd Bergmann <arnd@arndb.de>
Cc:     Sparc kernel list <sparclinux@vger.kernel.org>,
        Linux Kernel list <linux-kernel@vger.kernel.org>
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On Fri, Jan 31, 2020 at 7:40 PM Arnd Bergmann <arnd@arndb.de> wrote:
> On Fri, Jan 31, 2020 at 4:07 PM Anatoly Pugachev <matorola@gmail.com> wrote:
> >
> > $ git desc 251ec1c159e4874fbede0c3c586e317e177c0c9b
> > v5.5-rc1-19-g251ec1c159e4
> >
> > kernel 5.5.0-rc1-00018-g4f9fbd893fe8 - works perfectly (i.e. does not
> > hang or produce "stall on CPU" )
> >
> > current master with the patch reverted -
> > 5.5.0-07763-gccaaaf6fe5a5-dirty - works perfectly
> >
> > current master 5.5.0-07763-gccaaaf6fe5a5 - stalls, hangs
> >
> >
> > Can someone look what is wrong with it and/or probably revert it ?!
> > Thanks.
>
> Thanks for the report, I think I found the problem! Can you try this patch?

Arnd,

this patch fixed issue for me. Thanks.