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Re: kern/56701: paninc on ufs2 while running on QEMU 6.2.0
The following reply was made to PR kern/56701; it has been noted by GNATS.
From: nervoso <nervoso%k1.com.br@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc:
Subject: Re: kern/56701: paninc on ufs2 while running on QEMU 6.2.0
Date: Mon, 14 Feb 2022 20:17:24 -0300
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Em seg, 2022-02-14 Ã s 22:30 +0000, David Holland escreveu:
> The following reply was made to PR kern/56701; it has been noted by GNATS.
>
> From: David Holland <dholland-bugs%netbsd.org@localhost>
> To: gnats-bugs%netbsd.org@localhost
> Cc:
> Subject: Re: kern/56701: paninc on ufs2 while running on QEMU 6.2.0
> Date: Mon, 14 Feb 2022 22:27:00 +0000
>
> On Mon, Feb 14, 2022 at 08:55:01AM +0000, Martin Husemann wrote:
> > The following reply was made to PR kern/56701; it has been noted by GNATS.
> > This is probably totaly unrelated to ffs code.
> > My guess is random memory corruption.
> >
> > Could be cause by:
> > - a bug in qemu
> > - some random NetBSD kernel bug
> >
> > Also note that we heavily use Qemu to test i386 builds in our automatic
> > test setup, and we have not seen this issue there.
>
> My guess would be a 32-bit issue in the virtio disk code, since that's
> probably rarely used with 32-bit kernels.
>
> --
> David A. Holland
> dholland%netbsd.org@localhost
>
good... will try to use a not virtio-diskÂ
and tell the result... Â probably a not align dma??? that
by default is aligned on 64 bit boundary on amd64 and in 32bit on
i386...
probably the 9.2_stable code for virtio changedÂ
Will let you know
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<html><head></head><body><div>Em seg, 2022-02-14 =C3=A0s 22:30 +0000, David=
Holland escreveu:</div><blockquote type=3D"cite" style=3D"margin:0 0 0 .8e=
x; border-left:2px #729fcf solid;padding-left:1ex"><pre>The following reply=
was made to PR kern/56701; it has been noted by GNATS.</pre><pre><br></pre=
><pre>From: David Holland <<a href=3D"mailto:dholland-bugs%netbsd.org@localhost";>d=
holland-bugs%netbsd.org@localhost</a>></pre><pre>To: <a href=3D"mailto:gnats-bugs@=
netbsd.org">gnats-bugs%netbsd.org@localhost</a></pre><pre>Cc: </pre><pre>Subject: Re:=
kern/56701: paninc on ufs2 while running on QEMU 6.2.0</pre><pre>Date: Mon=
, 14 Feb 2022 22:27:00 +0000</pre><pre><br></pre><pre> On Mon, Feb 14, 2022=
at 08:55:01AM +0000, Martin Husemann wrote:</pre><pre> > The following=
reply was made to PR kern/56701; it has been noted by GNATS.</pre><pre> &=
gt; This is probably totaly unrelated to ffs code.</pre><pre> > My gu=
ess is random memory corruption.</pre><pre> > </pre><pre> > Could=
be cause by:</pre><pre> > - a bug in qemu</pre><pre> > - some =
random NetBSD kernel bug</pre><pre> > </pre><pre> > Also note tha=
t we heavily use Qemu to test i386 builds in our automatic</pre><pre> >=
test setup, and we have not seen this issue there.</pre><pre> </pre><pre>=
My guess would be a 32-bit issue in the virtio disk code, since that's</pr=
e><pre> probably rarely used with 32-bit kernels.</pre><pre> </pre><pre> --=
</pre><pre> David A. Holland</pre><pre> <a href=3D"mailto:dholland@netbsd.=
org">dholland%netbsd.org@localhost</a></pre><pre> </pre></blockquote><div>good... wil=
l try to use a not virtio-disk </div><div>and tell the result...  =
;probably a not align dma??? that</div><div>by default is aligned on 64 bit=
boundary on amd64 and in 32bit on i386...</div><div>probably the 9.2_stabl=
e code for virtio changed </div><div><br></div><div>Will let you know<=
/div><div class=3D"-x-evo-signature-wrapper"><span class=3D"-x-evo-signatur=
e" id=3D"none"></span></div></body></html>
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