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SubjectRe: Hang in 2.6.23-rc5
On 9/3/07, Satyam Sharma <satyam@infradead.org> wrote:
>
>
> On Mon, 3 Sep 2007, Alexey Dobriyan wrote:
> >
> > Try this from net-2.6 tree:
> >
> > --- a/net/ipv4/tcp_input.c
> > +++ b/net/ipv4/tcp_input.c
> > @@ -560,7 +560,7 @@ static u32 tcp_rto_min(struct sock *sk)
> > struct dst_entry *dst = __sk_dst_get(sk);
> > u32 rto_min = TCP_RTO_MIN;
> >
> > - if (dst_metric_locked(dst, RTAX_RTO_MIN))
> > + if (dst && dst_metric_locked(dst, RTAX_RTO_MIN))
> > rto_min = dst->metrics[RTAX_RTO_MIN-1];
> > return rto_min;
> > }
>
> That's my impression as well. That's way too core/busy a codepath to have
> a bug in. As I said earlier, almost anybody testing -rc5 is sure to hit
> this within a few hours (probably less) -- sad, it greatly erodes from the
> usefulness of -rc5 as a release candidate.
>

Well - when my box locked up I was also doing a 300MB scp
through my ipw2200 wireless interface. But I did another today
and nothing bad happened.

In another email someone mentioned /var/log/messages - no,
that was totally void of anything peculiar, despite the fact that
I rebooted via Alt-SysRq T / P / S / U / B (this last did reboot
the box). Upon restart however no, nothing in /var/log/messages.
Didn't think it was the case to set up netconsole - only one
occurrence AND with VMWare modules loaded...

I will apply the above fix and will post again in case the hang
issue pops up again. Thanks, ciao,

--alessandro

"I can't believe you if I can't hear you"

(Editors, 'Smokers Outside The Hospital Doors')
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