linux-kernel - Re: [PATCH AUTOSEL 4.18 032/136] arm64: fix infinite stacktrace

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Message-ID: <20180918110051.GB16498@arm.com>
Date:   Tue, 18 Sep 2018 12:00:51 +0100
From:   Will Deacon <will.deacon@....com>
To:     Mikulas Patocka <mpatocka@...hat.com>
Cc:     Sasha Levin <Alexander.Levin@...rosoft.com>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH AUTOSEL 4.18 032/136] arm64: fix infinite stacktrace

On Tue, Sep 18, 2018 at 06:55:34AM -0400, Mikulas Patocka wrote:
> This patch is not correct, because the stacktrace is supposed to work 
> around discontiguous interrupt stacks.
> 
> You should replace 'frame->fp <= fp' with 'frame->fp == fp'.

No, just drop the patch. It was already reverted upstream in
e87a4a92fba3. Can the AUTOSEL robot check for upstream reverts?

Will