Messages in this thread | | | Date | Wed, 19 Jul 2017 15:35:46 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH 1/3] ipc: convert ipc_namespace.count from atomic_t to refcount_t |
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On Sun, 09 Jul 2017 16:59:55 -0500 ebiederm@xmission.com (Eric W. Biederman) wrote:
> Elena Reshetova <elena.reshetova@intel.com> writes: > > > refcount_t type and corresponding API should be > > used instead of atomic_t when the variable is used as > > a reference counter. This allows to avoid accidental > > refcounter overflows that might lead to use-after-free > > situations. > > In this patch you can see all of the uses of the count. > What accidental refcount overflows are possible?
I do rather dislike these conversions from the point of view of performance overhead and general code bloat. But I seem to have lost that struggle and I don't think any of these are fastpath(?).
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