Date: Thu, 3 May 2001 01:58:22 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: current@FreeBSD.org Subject: Re: panic in fxp driver Message-ID: <200105030158.SAA29983@usr09.primenet.com>
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The fxp driver is broken in a lot of places.
For example, in fxp_intr():
for (txp = sc->cbl_first; sc->tx_queued &&
(txp->cb_status & FXP_CB_STATUS_C) != 0;
txp = txp->next) {
if (txp->mb_head != NULL) {
m_freem(txp->mb_head);
txp->mb_head = NULL;
}
sc->tx_queued--;
}
...notice the "for" loop doesn't check to see if "txp = txp->next"
ends up being NULL? You can get this, if you put your system
under extreme load.
If you can repeat the problem with another card, it's a real
problem, otherwise it's probably just FXP driver brain damage...
Terry Lambert
terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.
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