Date: Mon, 3 Oct 2005 10:20:28 GMT From: Yar Tikhiy <yar@comp.chem.msu.su> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/86618: [if_nge] [panic] panic with ifconfig nge Message-ID: <200510031020.j93AKSg9062625@freefall.freebsd.org>
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The following reply was made to PR kern/86618; it has been noted by GNATS.
From: Yar Tikhiy <yar@comp.chem.msu.su>
To: freebsd-gnats-submit@FreeBSD.org
Cc:
Subject: Re: kern/86618: [if_nge] [panic] panic with ifconfig nge
Date: Mon, 3 Oct 2005 14:13:26 +0400
For the record: here is a detailed explanation of the problem from Yuriy.
----- Forwarded message from "Yuriy N. Shkandybin" <jura@networks.ru> -----
From: "Yuriy N. Shkandybin" <jura@networks.ru>
To: Yar Tikhiy <yar@FreeBSD.org>
Subject: Re: kern/83011: nge vlans broken
Date: Mon, 3 Oct 2005 14:06:45 +0400
Absolutely!
There is nge_stop() call from nge_init_locked()
it's might be noticed from traces i've provided.
Also i suppose problem appears due static nge nge_rx_list and nge_tx_list
allocation in struct nge_list_data
This leads to trash appeares here and when
for (i = 0; i < NGE_RX_LIST_CNT; i++) {
if (sc->nge_ldata->nge_rx_list[i].nge_mbuf != NULL) {
m_freem(sc->nge_ldata->nge_rx_list[i].nge_mbuf);
sc->nge_ldata->nge_rx_list[i].nge_mbuf = NULL;
}
}
performed
wrong sc->nge_ldata->nge_rx_list[i].nge_mbuf appeares and this leads to
crash.
Jura
>On Mon, Oct 03, 2005 at 06:50:18AM +0000, Yuriy N. Shkandybin wrote:
>>
>> Sure i've tested and it's definitely fixed.
>
>Thanks!
>
>> I've got another bug with this driver
>> See PR 86618
>
>Alas, I have no nge(4) hardware, so I posted a message
>to freebsd-net asking people to review PR 86618. The
>problem description looks nearly correct to me though.
>The only odd point I noticed was that nge_stop was called
>in responce to "ifconfig nge0 up" command. Are you sure
>it wasn't "ifconfig nge0 down"?
>
>--
>Yar
>
----- End forwarded message -----
--
Yar
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