Date: Tue, 11 Dec 2001 09:42:06 +0100 (CET) From: Riccardo.Veraldi@fi.infn.it To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: Rich Bud <rbud@fortean.com>, <freebsd-alpha@freebsd.org> Subject: Re: ifconfig gives unaligned access with faith driver Message-ID: <Pine.NEB.4.33.0112110939240.261-100000@dijkstra.fi.infn.it> In-Reply-To: <15381.22096.993339.435960@grasshopper.cs.duke.edu>
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very nice this uac program!
here is hte result I got from the ifconfig.core
Program terminated with signal 10, Bus error.
#0 status (afp=0x12003e538, addrcount=2, sdl=0x30312e3534312e34,
ifm=0x12006c134, ifam=0x12006c214) at ifconfig.c:1148
1148 if (allfamilies || afp->af_status == ether_status)
(gdb) bt
#0 status (afp=0x12003e538, addrcount=2, sdl=0x30312e3534312e34,
ifm=0x12006c134, ifam=0x12006c214) at ifconfig.c:1148
#1 0x120000cbc in main (argc=0, argv=0x12006c134) at ifconfig.c:633
(gdb) info registers
v0 0xa 10
t0 0x120070038 4832297016
t1 0x3e5453414349544c 4491306268162085964
t2 0x5453414349544c 23735437810553932
t3 0x120056958 4832192856
t4 0x2c 44
t5 0x0 0
t6 0x3d736761 1030973281
t7 0xa6576693d736761 749135107401672545
s0 0x12006c214 4832281108
s1 0x12003e538 4832093496
s2 0x3 3
s3 0x0 0
s4 0x2 2
s5 0x1 1
fp 0x12006c134 4832280884
a0 0x54 84
a1 0x0 0
a2 0x4 4
a3 0x11ffb49c 301970588
a4 0x120070010 4832296976
a5 0x0 0
t8 0x0 0
t9 0x0 0
t10 0x0 0
t11 0x0 0
ra 0x1200022b0 4831847088
t12 0x120034800 4832053248
at 0x120056b80 4832193408
gp 0x12005ef28 4832227112
sp 0x11ffb658 301971032
zero 0x0 0
pc 0x1200022bc 4831847100
vfp 0x11ffba28 301972008
(gdb) info frame
Stack level 0, frame at 0x11ffba28:
pc = 0x1200022bc in status (ifconfig.c:1148); saved pc 0x120000cbc
called by frame at 0x11ffbae8
source language c.
frame pointer is at sp+976
Arglist at 0x11ffb9f8, args: afp=0x12003e538, addrcount=2,
sdl=0x30312e3534312e34, ifm=0x12006c134, ifam=0x12006c214
Locals at 0x11ffba28, Previous frame's sp is 0x11ffba28
Saved registers:
s0 at 0x11ffb660, s1 at 0x11ffb668, s2 at 0x11ffb670, s3 at 0x11ffb678,
s4 at 0x11ffb680, s5 at 0x11ffb688, fp at 0x11ffb690, ra at 0x11ffb658,
pc at 0x11ffb658
I hope this can be useful
ciao
Rick
On Mon, 10 Dec 2001, Andrew Gallatin wrote:
> Date: Mon, 10 Dec 2001 19:41:52 -0500 (EST)
> From: Andrew Gallatin <gallatin@cs.duke.edu>
> To: Rich Bud <rbud@fortean.com>
> Cc: freebsd-alpha@freebsd.org
> Subject: Re: ifconfig gives unaligned access with faith driver
>
>
> Rich Bud writes:
>
> > kernel to pop the error messages? If not, do i plug in va,pc,ra or op
> > somewhere to track unaligned accesses down?
> >
>
> Run uac -s in the shell you're debugging from, then run ifconfig under
> gdb. The program should die with a sigbus at the site of the
> unaligned access trap.
>
> Drew
>
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