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Re: [PATCH 0/9] tools subsystem refcounter conversions

From Arnaldo Carvalho de Melo <acme@kernel.org>
Newsgroups linux.kernel
Subject Re: [PATCH 0/9] tools subsystem refcounter conversions
Date 2017-02-23 00:30 +0100
Message-ID <tdOw9-Mn-9@gated-at.bofh.it> (permalink)
References <tdkHL-4r9-13@gated-at.bofh.it> <tdkRr-4uK-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

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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.

- Arnaldo

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Thread

[PATCH 0/9] tools subsystem refcounter conversions Elena Reshetova <elena.reshetova@intel.com> - 2017-02-21 16:40 +0100
  [PATCH 9/9] tools: convert thread_map.refcnt from atomic_t to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-02-21 16:40 +0100
  [PATCH 2/9] tools: convert cpu_map.refcnt from atomic_t to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-02-21 16:40 +0100
    Re: [PATCH 2/9] tools: convert cpu_map.refcnt from atomic_t to  refcount_t Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-02-22 21:40 +0100
  [PATCH 1/9] tools: convert cgroup_sel.refcnt from atomic_t to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-02-21 16:40 +0100
    Re: [PATCH 1/9] tools: convert cgroup_sel.refcnt from atomic_t to  refcount_t Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-02-21 16:50 +0100
      RE: [PATCH 1/9] tools: convert cgroup_sel.refcnt from atomic_t to  refcount_t "Reshetova, Elena" <elena.reshetova@intel.com> - 2017-02-22 15:30 +0100
        Re: [PATCH 1/9] tools: convert cgroup_sel.refcnt from atomic_t to  refcount_t Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-02-22 16:50 +0100
          RE: [PATCH 1/9] tools: convert cgroup_sel.refcnt from atomic_t to  refcount_t "Reshetova, Elena" <elena.reshetova@intel.com> - 2017-02-22 17:20 +0100
            Re: [PATCH 1/9] tools: convert cgroup_sel.refcnt from atomic_t to  refcount_t Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-02-22 21:40 +0100
              RE: [PATCH 1/9] tools: convert cgroup_sel.refcnt from atomic_t to  refcount_t "Reshetova, Elena" <elena.reshetova@intel.com> - 2017-02-23 14:20 +0100
  [PATCH 3/9] tools: convert comm_str.refcnt from atomic_t to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-02-21 16:40 +0100
    Re: [PATCH 3/9] tools: convert comm_str.refcnt from atomic_t to  refcount_t Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-02-22 21:40 +0100
      Re: [PATCH 3/9] tools: convert comm_str.refcnt from atomic_t to  refcount_t Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-02-22 23:30 +0100
        Re: [PATCH 3/9] tools: convert comm_str.refcnt from atomic_t to  refcount_t Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-02-22 23:40 +0100
          RE: [PATCH 3/9] tools: convert comm_str.refcnt from atomic_t to  refcount_t "Reshetova, Elena" <elena.reshetova@intel.com> - 2017-02-23 10:20 +0100
            Re: [PATCH 3/9] tools: convert comm_str.refcnt from atomic_t to  refcount_t Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-02-23 14:20 +0100
  Re: [PATCH 0/9] tools subsystem refcounter conversions Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-02-21 16:50 +0100
    Re: [PATCH 0/9] tools subsystem refcounter conversions Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-02-23 00:30 +0100
      Re: [PATCH 0/9] tools subsystem refcounter conversions Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-02-23 00:30 +0100
        RE: [PATCH 0/9] tools subsystem refcounter conversions "Reshetova, Elena" <elena.reshetova@intel.com> - 2017-02-23 12:40 +0100
          Re: [PATCH 0/9] tools subsystem refcounter conversions Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-02-23 14:00 +0100
          Re: [PATCH 0/9] tools subsystem refcounter conversions Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-02-23 17:30 +0100
            RE: [PATCH 0/9] tools subsystem refcounter conversions "Reshetova, Elena" <elena.reshetova@intel.com> - 2017-02-24 08:40 +0100
              Re: [PATCH 0/9] tools subsystem refcounter conversions Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-02-24 14:40 +0100
  Re: [PATCH 0/9] tools subsystem refcounter conversions Peter Zijlstra <peterz@infradead.org> - 2017-02-21 16:50 +0100
    RE: [PATCH 0/9] tools subsystem refcounter conversions "Reshetova, Elena" <elena.reshetova@intel.com> - 2017-02-21 17:10 +0100

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