Re: reproducible crash when building sysutils/net-snmp

[David Laight <david%l8s.co.uk@localhost>]

On Fri, Jan 11, 2008 at 02:53:00AM +0000, Steven M. Bellovin wrote:
> I'm trying to rebuild sysutils/net-snmp on a T61 running
> amd64-current.  The disk is FFS; I'm not using softdep.  Every time I
> try the build, the system hangs or panics.  This last time, I turned
> off cpu1; it didn't help.  The kernel is from last night.  Here's the
> backtrace from the dump:
> 
> #0  0xffffffff80503105 in cpu_reboot (howto=256, bootstr=<value optimized 
> out>)
>     at /usr/src/sys/arch/amd64/amd64/machdep.c:666
> 666                     dumpsys();
> (gdb) bt
> #0  0xffffffff80503105 in cpu_reboot (howto=256, bootstr=<value optimized 
> out>)
>     at /usr/src/sys/arch/amd64/amd64/machdep.c:666
> #1  0xffffffff80463178 in panic (
>     fmt=0xffffffff80961f05 <Address 0xffffffff80961f05 out of bounds>)
>     at /usr/src/sys/kern/subr_prf.c:230
> #2  0xffffffff80504e94 in trap (frame=0xffff80004f3428b0)
>     at /usr/src/sys/arch/amd64/amd64/trap.c:264
> #3  0xffffffff80100f02 in calltrap ()
> #4  0x0000000000001000 in ?? ()
> Previous frame inner to this frame (corrupt stack?)

It is possible that my recent changes to the amd64 trap frame have
stopped gdb being able to traverse them.

        David

-- 
David Laight: david%l8s.co.uk@localhost