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From: Ben Hutchings <ben@decadent.org.uk>
To: Guenter Roeck <linux@roeck-us.net>, stable@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: boot stalls when booting sparc32 images on v3.16.y/v3.18.y in qemu
Date: Tue, 15 Jan 2019 23:51:06 +0000	[thread overview]
Message-ID: <fbe9499208e4899b2152877daabe9e59b390af6a.camel@decadent.org.uk> (raw)
In-Reply-To: <20190111221558.GA3067@roeck-us.net>

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On Mon, 2019-01-14 at 15:15 +0000, Guenter Roeck wrote:
> On Fri, Jan 11, 2019 at 01:26:35PM -0800, Guenter Roeck wrote:
> > Hi,
> > 
> > I recently updated the sparc32 root file system in my testbed
> > with one generated with buildroot.
> > 
> > As a result, sparc32 images no longer boot with v3.16.y and v3.18.y.
> > The system starts to come up, but stalls while starting syslog.
> > However, v3.16 and v3.18 do boot.
> > 
> > I bisected v3.18.y and ended up with commit 16c193364b4 ("sparc: Harden
> > signal return frame checks.") as culprit; bisect results below. Reverting
> > this commit fixes the problem for both v3.16.y and v3.18.y.
> > 
> > Is it worth spending any time on this, or should I just stop testing
> > sparc32 boot tests with v3.16.y and v3.18.y ?
> > 
> 
> After some more digging ... here is the quite obvious fix:
> 
> commit 07b5ab3f71d318e52c18cc3b73c1d44c908aacfa
> Author:     Andreas Larsson <andreas@gaisler.com>
> AuthorDate: Wed Nov 9 10:43:05 2016 +0100
> Commit:     David S. Miller <davem@davemloft.net>
> CommitDate: Thu Nov 10 16:47:38 2016 -0800
> 
>     sparc32: Fix inverted invalid_frame_pointer checks on sigreturns

Thanks, I've queued this up for 3.16.

Ben.

-- 
Ben Hutchings
This sentence contradicts itself - no actually it doesn't.



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      parent reply	other threads:[~2019-01-15 23:51 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-11 21:26 boot stalls when booting sparc32 images on v3.16.y/v3.18.y in qemu Guenter Roeck
2019-01-11 22:15 ` Guenter Roeck
2019-01-13  9:52   ` Greg Kroah-Hartman
2019-01-15 23:51   ` Ben Hutchings [this message]

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