panic: Memory modified after free

[Pawel Jakub Dawidek]

On Tue, Jan 31, 2006 at 10:50:21PM +0100, Christian Brueffer wrote:
+> On Tue, Jan 31, 2006 at 01:22:09PM -0800, Steve Kargl wrote:
+> > The system is a dual proc Tyan K8S Pro with 12 GB of memory.
+> > The kernel is UP.  This was recorded by hand. I have the crash dump.
+> > 
+> > Memory modified after free 0xffffff02505e0c00(504) val=deadc0dd @
+> > 0xffffff02505e0cd0
+> > 
+> 
+> For the record, I got this as well today.  Here it was on my notebook
+> at system shutdown.

Cool, so you have a chance to try memguard(9) and verify my patch to
manual page:)

--- memguard.9  30 Dec 2005 12:28:19 -0000	1.2
+++ memguard.9  31 Jan 2006 22:06:04 -0000
@@ -56,6 +56,9 @@ vm.memguard.desc=<memory_type>
 .Ed
 .Pp
 Where memory_type is a short description of memory type to monitor.
+The short description of memory type is the second argument to
+.Xr MALLOC_DECLARE 9 ,
+so one has to find it in the kernel source.
 .Pp
 To use memguard for memory type defined in a kernel module, one has to
set
 .Va vm.memguard.desc

-- 
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd at FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!
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