svn commit: r197715 - releng/6.3 releng/6.3/sys/conf releng/6.3/sys/fs/devfs releng/6.3/sys/kern releng/6.3/sys/sys releng/6.4 releng/6.4/sys/conf releng/6.4/sys/fs/devfs releng/6.4/sys/kern releng...

[Simon L. Nielsen]

On 2009.10.02 18:09:56 +0000, Simon L. Nielsen wrote:
> Author: simon
> Date: Fri Oct  2 18:09:56 2009
> New Revision: 197715
> URL: http://svn.freebsd.org/changeset/base/197715
> 
> Log:
>   MFC r197711 (partial) to 6.x and 7.x:
>   
>   - Add no zero mapping feature, disabled by default. [EN-09:05]
>   
>   MFC 178913,178914,179242,179243,180336,180340 to 6.x:
>   
>   - Fix kqueue pipe race conditions. [SA-09:13]
>   
>   MFC r192301 to 7.x; 6.x has slightly different fix:
>   
>   - Fix devfs / VFS NULL pointer race condition. [SA-09:14]
>   
>   Security:	FreeBSD-SA-09:13.pipe
>   Security:	FreeBSD-SA-09:14.devfs
>   Errata:		FreeBSD-EN-09:05.null
>   Submitted by:	kib [SA-09:13] [SA-09:14]
>   Submitted by:	bz [EN-09:05]
>   In collaboration with:	jhb, kib, alc [EN-09:05]
>   Approved by:	so (simon)

Oh, and I initially forgot:

Tested by:	pho

(and that was testing both reproducing the problems in the first place
and helping in testing that the patches actually closes the races
etc. - so thanks to pho as well as the other people mentioned above!
:-) )

-- 
Simon L. Nielsen