Date: Fri, 31 Aug 2001 11:22:32 -0700 (PDT) From: John Baldwin <jhb@FreeBSD.org> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: freebsd-alpha@FreeBSD.org, cvs-committers@FreeBSD.org, Peter Wemm <peter@FreeBSD.org> Subject: Re: cvs commit: src/sys/alpha/alpha pmap.c Message-ID: <XFMail.010831112232.jhb@FreeBSD.org> In-Reply-To: <20010831123412.A83980@grasshopper.cs.duke.edu>
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On 31-Aug-01 Andrew Gallatin wrote:
> Peter Wemm [peter@FreeBSD.org] wrote:
>> peter 2001/08/30 23:19:08 PDT
>>
>> Modified files:
>> sys/alpha/alpha pmap.c
>> Log:
>> Same treatment as i386/isa/pmap.c - clean up some style to sync towards
>> KSE diff.
>>
>> Revision Changes Path
>> 1.64 +35 -40 src/sys/alpha/alpha/pmap.c
>
>
> Hi Peter,
>
> I hate to be the bearer of bad news, but my UP1000 crashes about 10
> minutes into a buildworld with today's top of the tree kernel. After
> backing out this pmap change, I'm able to make it further (its still
> building).
>
> The crash is:
>
> fatal kernel trap:
>
> trap entry = 0x2 (memory management fault)
> faulting va = 0xfffffffe00480ca0
> type = access violation
> cause = load instructon
> pc = 0xfffffc0000582da8
> ra = 0xfffffc0000582ee4
Can you do a 'l *0xfffffc0000582da8' in gdb to see what source line it died on?
>#13 0xfffffc0000582ee4 in pmap_remove_pages (pmap=0xfffffe00152eb4f0,sva=0,
> eva=4398046511104) at ../../../alpha/alpha/pmap.c:1649
Erm, line 1649 of pmap.c is this:
static PMAP_INLINE void
free_pv_entry(pv_entry_t pv)
{
pv_entry_count--;
>>> zfree(pvzone, pv);
}
Which isn't in pmap_remove_pages().
Ah, that address in the frame line is the ra though, the pc might be the zfree
call.
--
John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/
PGP Key: http://www.baldwin.cx/~john/pgpkey.asc
"Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
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