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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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