Date: Thu, 13 Oct 2005 01:41:50 +0200 From: Emanuel Strobl <Emanuel.strobl@gmx.net> To: freebsd-current@freebsd.org Cc: Andrew Gallatin <gallatin@cs.duke.edu> Subject: Re: Ugly BETA5 crashes, VM fault (with trace) Message-ID: <200510130142.01000@harrymail> In-Reply-To: <17229.22291.792602.879249@grasshopper.cs.duke.edu> References: <17229.22291.792602.879249@grasshopper.cs.duke.edu>
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Am Mittwoch, 12. Oktober 2005 20:33 CEST schrieb Andrew Gallatin:
> Can you start gdb on your kernel.debug, and
> show the output of: "list *vm_page_cowsetup+0x2e"
>
> Thanks,
Thank you for the hint, unfortunately I rebuilt my kernel (very_late=20
BETA5->RC1) and forgot that kernel.debug won't be in /boot/kernel.old.
But from the new kernel.debug I get something (to me) senseful:
builder_cale:usr/src/sys/CALE#11: gdb kernel.debug
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you=20
are
welcome to change it and/or distribute copies of it under certain=20
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd"...
(gdb) list *vm_page_cowsetup+0x2e
0xc06fd7be is in vm_page_cowsetup (/usr/src/sys/vm/vm_page.c:1699).
1694 void
1695 vm_page_cowsetup(vm_page_t m)
1696 {
1697
1698 mtx_assert(&vm_page_queue_mtx, MA_OWNED);
1699 m->cow++;
1700 pmap_page_protect(m, VM_PROT_READ);
1701 }
1702
1703 #include "opt_ddb.h"
(gdb) =20
Thanks! And Robert Watson's assumption is correct: I'm using=20
zero_copy_sockets.
My HW is really underdimensioned/oldfashioned so I tried to squeeze out the=
=20
last thing possible ;)
=2DHarry
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