svn commit: r212174 - head/sys/vm

Andriy Gapon avg at freebsd.org
Wed Sep 8 07:35:23 UTC 2010


on 03/09/2010 13:40 Andriy Gapon said the following:
> Author: avg
> Date: Fri Sep  3 10:40:53 2010
> New Revision: 212174
> URL: http://svn.freebsd.org/changeset/base/212174
> 
> Log:
>   vm_page.c: include opt_msgbuf.h for MSGBUF_SIZE use in vm_page_startup
>   
>   vm_page_startup uses MSGBUF_SIZE value for adding msgbuf pages to minidump.
>   If opt_msgbuf.h is not included and MSGBUF_SIZE is overriden in kernel
>   config, then not all msgbuf pages will be dumped.  And most importantly,
>   struct msgbuf itself will not be included.  Thus the dump would look
>   corrupted/incomplete to tools like kgdb, dmesg, etc that try to access
>   struct msgbuf as one of the first things they do when working on a crash
>   dump.
>   
>   MFC after:	5 days
Actually, not MFC is needed unless/until new way of allocating message buffer on
amd64 (via direct map) is MFC-ed.  In particular, r208164.

-- 
Andriy Gapon


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