Date: Thu, 20 May 2004 15:57:34 -0700 From: David Schultz <das@FreeBSD.ORG> To: Tomas Pluskal <plusik@pohoda.cz> Cc: hackers@FreeBSD.ORG Subject: Re: copyin() EFAULT Message-ID: <20040520225734.GA23802@VARK.homeunix.com> In-Reply-To: <Pine.LNX.4.30L2.0405191350210.2702-100000@pohoda.cz> References: <Pine.LNX.4.30L2.0405191350210.2702-100000@pohoda.cz>
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On Wed, May 19, 2004, Tomas Pluskal wrote: > I would like to ask you for help or explanation - why do I get EFAULT when > invoking copyin() or fubyte() etc. I am writing a kernel module, and I [...] > So copying of some blocks was OK, and on some blocks it returned EFAULT. > Why? You will get EFAULT when you try to copy pages that are not mapped in the user process.
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