[CHECKER] bugs in FreeBSD
kmacy at netapp.com
Fri Jan 16 21:00:08 PST 2004
Dawson is the man.
If I have not seen as far as others, it is because I have been
standing in the footprints of giants. -- from Usenet
On Fri, 16 Jan 2004, Xin LI wrote:
> The tool is amazing :)
> I am very interested in how does it work, is there any paper published on
> this topic?
> Thanks in advance!
> Xin LI,
> Beijing University of Technology
> ----- Original Message -----
> From: "Paul Twohey" <twohey at CS.Stanford.EDU>
> To: <freebsd-hackers at freebsd.org>
> Sent: Saturday, January 17, 2004 8:01 AM
> Subject: [CHECKER] bugs in FreeBSD
> > Hi,
> > I'm with the Stanford Metacompilation research group. We have a suite of
> > checkers that find bugs at compile time and we've had quite a bit of
> > success checking the Linux kernel code for errors. Since our checkers can
> > emit false alarms we filter the reports before we give them to the kernel
> > developers. While some false alarms slip past us to the developers, our
> > limited knowledge of the kernel allows us to recognize most of them.
> > We are currently trying to extend our checker to automatically find
> > functions which allocate resources and to make sure those resources are
> > properly disposed of.
> > Enclosed is a list of potential bugs in FreeBSD where a value is returned
> > from a function (like malloc) that should be owned by the caller and the
> > caller does not properly dispose of the value with the appropriate
> > disposal routine (like free).
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