From: george anzinger <george@mvista.com>
To: Andi Kleen <ak@muc.de>
Cc: "David S. Miller" <davem@redhat.com>,
kuznet@ms2.inr.ac.ru, netdev@oss.sgi.com,
linux-net@vger.kernel.org, pekkas@netcore.fi,
andrew.r.cress@intel.com
Subject: Re: Network oops
Date: Fri, 28 Jun 2002 12:56:31 -0700 [thread overview]
Message-ID: <afif9f$oe1$2@main.gmane.org> (raw)
In-Reply-To: 20020622025551.A1919@averell
We finally found the problem. I want to thank the folks who
gave any thought and/or feedback to us, particularly Alexey
and David.
For what its worth we tracked it down to the kernel memory
allocation routines allocating the same buffer to two
different network requesters. This in turn was caused by a
basic flaw in the preemption code that preempted on
spin_unlock, REGARDLESS OF THE STATE OF THE INTERRUPT
SYSTEM.
--
George Anzinger george@mvista.com
High-res-timers:
http://sourceforge.net/projects/high-res-timers/
Real time sched: http://sourceforge.net/projects/rtsched/
Preemption patch:
http://www.kernel.org/pub/linux/kernel/people/rml
next prev parent reply other threads:[~2002-06-28 19:56 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <3CE95190.75C52E2D@mvista.com>
2002-05-20 20:29 ` System crash in tcp_fragment() Andi Kleen
[not found] ` <20020520222937.A1467@averell>
2002-05-20 21:18 ` george anzinger
2002-05-20 21:25 ` kuznet
2002-05-20 22:08 ` David S. Miller
[not found] ` <200205202125.BAA03545@sex.inr.ac.ru>
2002-05-20 23:01 ` george anzinger
2002-05-20 23:54 ` Andi Kleen
2002-06-09 17:31 ` Network oops george anzinger
[not found] ` <3D0390E2.1B80ADEE@mvista.com>
2002-06-10 4:31 ` David S. Miller
2002-06-10 4:32 ` David S. Miller
[not found] ` <20020609.213150.32126725.davem@redhat.com>
2002-06-10 4:48 ` george anzinger
[not found] ` <3D042F8F.72764243@mvista.com>
2002-06-10 5:06 ` David S. Miller
2002-06-20 17:19 ` george anzinger
[not found] ` <3D120EAE.5A0D365E@mvista.com>
2002-06-21 0:38 ` David S. Miller
[not found] ` <20020620.173805.55219901.davem@redhat.com>
2002-06-21 14:16 ` george anzinger
[not found] ` <3D133538.60B6810C@mvista.com>
2002-06-21 14:17 ` David S. Miller
[not found] ` <20020621.071720.07439917.davem@redhat.com>
2002-06-21 15:12 ` george anzinger
2002-06-22 0:55 ` Andi Kleen
[not found] ` <20020622025551.A1919@averell>
2002-06-28 19:56 ` george anzinger [this message]
[not found] ` <20020609.213224.01016187.davem@redhat.com>
2002-06-10 8:11 ` george anzinger
[not found] ` <3D045F15.578E1DA9@mvista.com>
2002-06-10 8:31 ` David S. Miller
[not found] ` <20020610.013110.81671593.davem@redhat.com>
2002-06-10 14:12 ` george anzinger
2002-06-10 14:42 Mala Anand
2002-06-12 1:35 ` Donald Becker
-- strict thread matches above, loose matches on Subject: below --
2002-06-12 16:58 Mala Anand
[not found] <OF8ADD9FF7.49EC72C0-ON85256BD6.005CEBAC@raleigh.ibm.com>
2002-06-12 17:42 ` Nivedita Singhvi
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