Date: Tue, 22 Jan 2008 18:30:03 GMT From: wforms@Safe-mail.net To: freebsd-net@FreeBSD.org Subject: Re: kern/112654: [pcn] Kernel panic upon if_pcn module load on a Netfinity 5000 Message-ID: <200801221830.m0MIU312018478@freefall.freebsd.org>
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The following reply was made to PR kern/112654; it has been noted by GNATS.
From: wforms@Safe-mail.net
To: bug-followup@freebsd.org
Cc: marius@alchemy.franken.de, "Andy Farkas" <chuzzwassa@gmail.com>
Subject: Re: kern/112654: [pcn] Kernel panic upon if_pcn module load on a Netfinity 5000
Date: Tue, 22 Jan 2008 19:23:17 +0100
New test was carried out today using Marius' patch (and not using Andy's patch at the same time).
The new kernel re-introduces the original problem, loading the if_pcn driver while the RJ45 cable is connected results in a kernel panic and the system reboots. While the cable is disconnected the if_pcn module loads fine, after which the cable can be plugged back and the card can be used as expected.
### Here is what shows up upon "kldload if_pcn" while the cable is unplugged ###
pcn0: <AMD PCnet/PCI 10/100BaseTX> port 0x2180-0x219f mem 0xfebff800-0xfebff81f
irq 17 at device 9.0 on pci0
pcn0: Chip ID 2624 (Am79C972)
miibus5: <MII bus> on pcn0
nsphyter0: <DP83843 10/100 media interface> on miibus5
nsphyter0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
ukphy0: <Generic IEEE 802.3u media interface> on miibus5
ukphy0: 10baseT, 10baseT-FDX, auto
pcn0: Ethernet address: 00:06:29:50:d9:9e
### At that point ifconfig says: ###
root@netfinity ~# ifconfig pcn0
pcn0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
ether 00:06:29:50:d9:9e
media: Ethernet autoselect (none)
status: no carrier
### Then I connect the RJ45 cable coming from the switch and: ###
root@netfinity ~# ifconfig pcn0
pcn0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
ether 00:06:29:50:d9:9e
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
root@netfinity ~#
### Now here is what "kldload if_pcn" does while the cable is connected: ###
pcn0: <AMD PCnet/PCI 10/100BaseTX> port 0x2180-0x219f mem 0xfebff800-0xfebff81f
irq 17 at device 9.0 on pci0
pcn0: Chip ID 2624 (Am79C972)
miibus5: <MII bus> on pcn0
nsphyter0: <DP83843 10/100 media interface> on miibus5
nsphyter0: no media present
ifmedia_set: no match for 0x0/0xfffffff
panic: ifmedia_set
Regards,
Keve
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