From: Michael Tokarev <mjt@tls.msk.ru>
To: Francois Romieu <romieu@fr.zoreil.com>
Cc: netdev <netdev@vger.kernel.org>
Subject: Re: r8169: instant crash if receiving packet larger than MTU
Date: Tue, 17 Feb 2009 23:55:19 +0300 [thread overview]
Message-ID: <499B2437.90400@msgid.tls.msk.ru> (raw)
In-Reply-To: <20090217193749.GA12921@electric-eye.fr.zoreil.com>
Francois Romieu wrote:
> Michael Tokarev <mjt@tls.msk.ru> :
>> I played with jumbo frames today at home on two
>> machines with built-in r8169 NICs. And discovered
>> that, after enabling larger packets on one machine,
>> it's sufficient to send SINGLE packet to immediately,
>> instantly crash the other machine.
>
> Which size did you use and how did it crash (dead keyboard leds
> without any message in the console ?) ?
Original interface MTU was unchanged from the default 1500 bytes.
The packet I sent was of size 8000 bytes.
The crash - one of the machines in question was completely dead,
nothing on the console, and dead keyboard leds. Another with the
same chip rebooted instantly.
/mjt
prev parent reply other threads:[~2009-02-17 20:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-14 15:16 r8169: instant crash if receiving packet larger than MTU Michael Tokarev
2009-02-17 19:37 ` Francois Romieu
2009-02-17 20:55 ` Michael Tokarev [this message]
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