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RE: ppc/translate patch causing segfaults
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From: |
Paul A. Clarke |
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Subject: |
RE: ppc/translate patch causing segfaults |
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Date: |
Mon, 17 May 2021 14:57:57 -0500 |
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User-agent: |
Mutt/1.10.1 (2018-07-13) |
On Tue, May 11, 2021 at 02:00:17PM +1000, David Gibson wrote:
> On Mon, May 10, 2021 at 10:54:06AM -0500, Paul A. Clarke wrote:
> > On Tue, May 04, 2021 at 03:01:41PM -0500, Paul A. Clarke wrote:
> > > I built QEMU top-of-tree, and saw applications occasionally crashing while
> > > running full-system emulation of ppc64le/POWER9, and unable to reproduce
> > > on hardware.
> > ...
> > > I bisected to this commit:
> > > ```
> > > commit bcb0b7b1a1c05707304f80ca6f523d557816f85c
> > > Author: Giuseppe Musacchio <thatlemon@gmail.com>
> > > Date: Mon Nov 9 10:17:11 2020 +0100
> > >
> > > ppc/translate: Rewrite gen_lxvdsx to use gvec primitives
> > > ```
> >
> > I confirmed these crashes happen with QEMU release 6.0.0.
> >
> > I opened https://gitlab.com/qemu-project/qemu/-/issues/212.
>
> Bother, that's unfortunate.
>
> I don't really have any clues here. Richard?
It's an endian issue. I posted details in the issue:
https://gitlab.com/qemu-project/qemu/-/issues/212#note_577296412
PC