Date: Fri, 27 Jan 2012 19:50:30 +1100 (EST) From: Bruce Evans <brde@optusnet.com.au> To: Gleb Smirnoff <glebius@FreeBSD.org> Cc: svn-src-head@FreeBSD.org, svn-src-all@FreeBSD.org, src-committers@FreeBSD.org, Bruce Evans <brde@optusnet.com.au> Subject: Re: svn commit: r230583 - head/sys/kern Message-ID: <20120127194612.H1547@besplex.bde.org> In-Reply-To: <20120126153641.GA68112@FreeBSD.org> References: <201201261159.q0QBxma2086162@svn.freebsd.org> <20120126233110.C960@besplex.bde.org> <20120126153641.GA68112@FreeBSD.org>
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On Thu, 26 Jan 2012, Gleb Smirnoff wrote: > On Thu, Jan 26, 2012 at 11:53:57PM +1100, Bruce Evans wrote: > B> > @@ -1552,6 +1552,12 @@ aio_aqueue(struct thread *td, struct aio > B> > return (error); > B> > } > B> > > B> > + /* XXX: aio_nbytes is later casted to signed types. */ > B> > + if ((int)aiocbe->uaiocb.aio_nbytes < 0) { > B> > B> This should avoid implementation-defined behaviour by checking if > B> > B> (uncast)aiocbe->uaiocb.aio_nbytes > INT_MAX. > Is the attached patch okay? Yes. It now matches the style used for read^Wsys_read() and friends. This used to have to fit the count in "int uio_resid". uio_resid now has type ssize_t, but for some reason the old INT_MAX limits remain. Bruce
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