Date: Tue, 25 Jan 2005 10:37:06 +0100 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Jeremie Le Hen <jeremie@le-hen.org> Cc: freebsd-current@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/md md.c Message-ID: <79659.1106645826@critter.freebsd.dk> In-Reply-To: Your message of "Mon, 24 Jan 2005 14:45:46 %2B0100." <20050124134546.GB59685@obiwan.tataz.chchile.org>
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In message <20050124134546.GB59685@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@freebsd.org, he's working on the FULL_PREEMPTION stuff. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@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.
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