Date: Thu, 20 Dec 2007 18:04:27 GMT From: Manolis Kiagias <sonicy@otenet.gr> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/118897: Kernel Panic acquiring IP address from DHCP server on newly enabled netcard Message-ID: <200712201804.lBKI4RgT068307@www.freebsd.org> Resent-Message-ID: <200712201810.lBKIA39T048819@freefall.freebsd.org>
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>Number: 118897 >Category: kern >Synopsis: Kernel Panic acquiring IP address from DHCP server on newly enabled netcard >Confidential: no >Severity: critical >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Dec 20 18:10:02 UTC 2007 >Closed-Date: >Last-Modified: >Originator: Manolis Kiagias >Release: 6.3-RC1 >Organization: >Environment: FreeBSD pegasus.dyndns.org 6.3-RC1-p1 FreeBSD 6.3-RC1-p1 #2: Sun Dec 2 19:48:21 EET 2007 root@pegasus.dyndns.org:/usr/obj/usr/src/sys/PEGASUS i386 >Description: Machine has a broadcom network card shown as bfe0. At boot, the card is not enabled (commented out) in rc.conf Driver attaches normally. After editing rc.conf to enable the line: ifconfig_bfe0="DHCP" and running: /etc/rc.d/netif restart there is a kernel panic while getting an address from DHCP server (a linksys home router). panic: page fault fault virtual address = 0x104 fault code = supervisor read, page not present instruction pointer = 0x20:0xc052417d stack pointer = 0x28:0xe71ffbec frame pointer = 0x28:0xe71ffbf8 code segment = base 0x0 limit 0xfffff type 0x1b =DPL 0, pres 1, def32 1, gran 1 =resume, IOPL=0 =971 (ifconfig) =12 >How-To-Repeat: The symptom is repeatable every time. Use the procedure mentioned above. The symptom does not occur if you reboot after enabling the card in rc.conf. In this case the card is assigned an IP and subsequent runs of netif have no undesirable effects. >Fix: None that I know. Only workaround is to reboot after enabling the rc.conf entry. >Release-Note: >Audit-Trail: >Unformatted:
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