Date: Thu, 09 May 2002 21:53:23 -0400 (EDT) From: John Baldwin <jhb@FreeBSD.org> To: Josef Karthauser <joe@tao.org.uk> Cc: cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/usb usb_port.h Message-ID: <XFMail.20020509215323.jhb@FreeBSD.org> In-Reply-To: <20020509201833.GA403@genius.tao.org.uk>
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On 09-May-2002 Josef Karthauser wrote:
> On Thu, May 09, 2002 at 01:04:22PM -0400, John Baldwin wrote:
>>
>> >> If you have kernel.debug lying around for this one, try using
>> >> addr2line (or gdb) to get the file and line of those addresses
>> >> in the backtrace. Probably just the first one is needed as this
>> >> is a simple NULL pointer dereference.
>> >
>> > Ok. Here's a trace from a remote debug:
>> >
>> > Program received signal SIGSEGV, Segmentation fault.
>> > sysctl_find_oidname (name=0xc02e50ce "ata_dma", list=0x0)
>> > at /usr/src/sys/kern/kern_sysctl.c:79
>> > 79 SLIST_FOREACH(oidp, list, oid_link) {
>> > (gdb) bt
>> > #0 sysctl_find_oidname (name=0xc02e50ce "ata_dma", list=0x0)
>> > at /usr/src/sys/kern/kern_sysctl.c:79
>> > #1 0xc01ef62c in sysctl_register_oid (oidp=0xc0333380)
>> > at /usr/src/sys/kern/kern_sysctl.c:104
>> > #2 0xc01efb70 in sysctl_register_all (arg=0x0)
>> > at /usr/src/sys/kern/kern_sysctl.c:402
>> > #3 0xc01cf7c5 in mi_startup () at /usr/src/sys/kern/init_main.c:208
>> > (gdb)
>> >
>> > Joe
>>
>> I don't see how this can happen. Can you try doing a make clean to delete
>> all the .o's and rebuild the kernel from scratch? Also, can you run 'nm'
>> on the resulting kernel to make sure there aren't any unresolved symbols?
>> (unresolved symbols have a type of 'U').
>
> Yes, you're right. I've done a nice clean kernel build and this problem
> has gone away; coupled with the env fix I've now got a system that
> boots.
>
> Sweet!
Great, thanks for testing.
--
John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
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