linux-kernel - Re: BUG : PowerPC RCU: torture test failed with __stack_chk

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Message-ID: <87v8hixbql.fsf@mail.concordia>
Date:   Thu, 27 Apr 2023 13:09:06 +1000
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Zhouyi Zhou <zhouzhouyi@...il.com>
Cc:     linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        rcu <rcu@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>, lance@...osl.org,
        "Paul E. McKenney" <paulmck@...nel.org>
Subject: Re: BUG : PowerPC RCU: torture test failed with __stack_chk_fail

Zhouyi Zhou <zhouzhouyi@...il.com> writes:
> On Tue, Apr 25, 2023 at 2:01 PM Zhouyi Zhou <zhouzhouyi@...il.com> wrote:
>> On Tue, Apr 25, 2023 at 6:07 AM Michael Ellerman <mpe@...erman.id.au> wrote:
...
>> >
>> > There's 12.2.0 here:
>> >   https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/12.2.0/
>> >   https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/ppc64le/12.2.0/

> powerpc64le-linux-gnu-gcc-12 cross compiler on my Ubuntu 22.04 does
> not seem to have that issue as gcc-10 does

OK. So so far it's only that GCC 10 that shows the problem.

If you have time, you could use some of the other versions to narrow
down which versions show the bug:

  https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/ppc64le/

There's an 11.0, 11.1 and 11.3 there, as well as 9.5 and so on.

There's