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Groups > linux.kernel > #1584577
| From | "Reshetova, Elena" <elena.reshetova@intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | RE: [PATCH 0/3] ipc subsystem refcounter conversions |
| Date | 2017-02-20 13:40 +0100 |
| Message-ID | <tcVq2-4F1-9@gated-at.bofh.it> (permalink) |
| References | <tcUtX-453-3@gated-at.bofh.it> <tcUDE-48G-25@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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> On Mon, Feb 20, 2017 at 1:29 PM, Elena Reshetova > <elena.reshetova@intel.com> wrote: > > Now when new refcount_t type and API are finally merged > > (see include/linux/refcount.h), the following > > patches convert various refcounters in the ipc 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. > > > > The below patches are fully independent and can be cherry-picked separately. > > Since we convert all kernel subsystems in the same fashion, resulting > > in about 300 patches, we have to group them for sending at least in some > > fashion to be manageable. Please excuse the long cc list. > > Is that done using coccinelle? Yes and no. The *finding* of cases that should be converted was done using coccinelle, but actual conversion was done manually for each case and not via semantic patch. There were many false-positives and all kind of other issues, so we had to analyse each variable separately to the extend we understand the code. > > Can I see the semantic patch (sorry if I missed it earlier)? Attached is the one we used to initially find variables. Best Regards, Elena.
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[PATCH 0/3] ipc subsystem refcounter conversions Elena Reshetova <elena.reshetova@intel.com> - 2017-02-20 12:40 +0100
Re: [PATCH 0/3] ipc subsystem refcounter conversions Andy Shevchenko <andy.shevchenko@gmail.com> - 2017-02-20 12:50 +0100
RE: [PATCH 0/3] ipc subsystem refcounter conversions "Reshetova, Elena" <elena.reshetova@intel.com> - 2017-02-20 13:40 +0100
Re: [PATCH 0/3] ipc subsystem refcounter conversions Davidlohr Bueso <dave@stgolabs.net> - 2017-02-22 16:50 +0100
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