cvs commit: src/sys/dev/md md.c

[Poul-Henning Kamp]

In message <20050124134546.GB59685 at obiwan.tataz.chchile.org>, Jeremie Le Hen writes:

>While talking about WITNESS, I checked my kernel config and remembered
>that FULL_PREEMPTION is on.  The panic disappeared when I turned off
>the latter : I managed to create up to about 16 md(4) devices.  I know
>this should not be enabled for users, but I'm interested in "exposing
>race conditions" as said in the comment.

Well, you clearly did :-)

I suggest you send a summary of what you have found to jhb at freebsd.org,
he's working on the FULL_PREEMPTION stuff.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.