Messages in this thread | | | Date | Wed, 22 Feb 2017 20:29:17 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH 0/9] tools subsystem refcounter conversions |
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Em Wed, Feb 22, 2017 at 08:23:29PM -0300, Arnaldo Carvalho de Melo escreveu: > Em Tue, Feb 21, 2017 at 12:39:35PM -0300, Arnaldo Carvalho de Melo escreveu: > > Em Tue, Feb 21, 2017 at 05:34:54PM +0200, Elena Reshetova escreveu: > > > Now when new refcount_t type and API are finally merged > > > (see include/linux/refcount.h), the following > > > patches convert various refcounters in the tools susystem from atomic_t > > > to refcount_t. By doing this we prevent intentional or accidental > > > underflows or overflows that can led to use-after-free vulnerabilities. > > > > Thanks for working on this! I was almost going to jump on doing this > > myself! > > > > I'll try and get this merged ASAP. > > So, please take a look at my tmp.perf/refcount branch at: > > git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git > > There are multiple fixes in it to get it to build and test it, so far, > with: > > perf top -F 15000 -d 0 > > while doing kernel builds and tight usleep 1 loops to create lots of > short lived threads with its map_groups, maps, dsos, etc. > > Now running some build tests in some 36 containers with assorted distros > and cross compilers.
Tomorrow I'll inject some refcount errors to test this all.
- Arnaldo
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