Date: Fri, 14 Oct 2005 15:17:16 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-current@freebsd.org Cc: Benjamin Close <Benjamin.Close@clearchain.com> Subject: Re: 6.0-RC1 Panic Message-ID: <200510141517.16934.jhb@freebsd.org> In-Reply-To: <434D9B4A.7080909@clearchain.com> References: <434D9B4A.7080909@clearchain.com>
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On Wednesday 12 October 2005 07:24 pm, Benjamin Close wrote:
> Hi All,
> I can repeatedly get this panic at boot if I have my wi0 (802.11b
> Lucent / Hermes chipset) card in my laptop.
>
> Fatal trap 18: integer divide fault while in kernel mode
> instruction pointer = 0x20:0xc06474fa
> stack pointer = 0x28:0xd9927c78
> frame pointer = 0x28:0xd9927c88
> code segment = base 0x0, limit 0xfffff, type 0x1b
> = DPL 0, pres 1, def32 1, gran 1
> processor eflags = interrupt enabled, resume, IOPL = 0
> current process = 242 (netstat)
> trap number = 18
> panic: integer divide fault
> Uptime: 3m32s
> Dumping 511 MB (2 chunks)
> chunk 0: 1MB (159 pages) ... ok
> chunk 1: 511MB (130794 pages) 495 479 463 447 431 415 399 383 367 351
> 335 319 303 287 271 255 239 223 207 191 175 159 143 127 111
> 95 79 63 47 31 15
>
> Full Details below...
Hmm, so it looks like maybe your ipfw.ko KLD doesn't have a DT_HASH section.
Try doing an objdump of your ipfw.ko and see if it has a .hash. Here's the
objdump from the ipfw.ko on my laptop:
> objdump -h /boot/kernel.GENERIC/ipfw.ko | head
/boot/kernel.GENERIC/ipfw.ko: file format elf32-i386-freebsd
Sections:
Idx Name Size VMA LMA File off Algn
0 .hash 00000348 00000094 00000094 00000094 2**2
CONTENTS, ALLOC, LOAD, READONLY, DATA
1 .dynsym 000006f0 000003dc 000003dc 000003dc 2**2
CONTENTS, ALLOC, LOAD, READONLY, DATA
2 .dynstr 00000439 00000acc 00000acc 00000acc 2**0
Note the .hash as the first section.
You can also try this patch which might fix the problem (though your ipfw.ko
still won't load):
Index: kern/link_elf.c
===================================================================
RCS file: /usr/cvs/src/sys/kern/link_elf.c,v
retrieving revision 1.84
diff -u -r1.84 link_elf.c
--- kern/link_elf.c 28 Aug 2005 04:50:11 -0000 1.84
+++ kern/link_elf.c 14 Oct 2005 19:16:48 -0000
@@ -1019,6 +1019,12 @@
unsigned long hash;
int i;
+ /* If we don't have a hash, bail. */
+ if (ef->buckets == NULL || ef->nbuckets == 0) {
+ printf("link_elf_lookup_symbol: missing symbol hash table\n");
+ return ENOENT;
+ }
+
/* First, search hashed global symbols */
hash = elf_hash(name);
symnum = ef->buckets[hash % ef->nbuckets];
--
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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