On 03/11/15 23:20, Frederic Barrat wrote:
When the cxl driver creates a context, it stores the pid of the
calling task, and mistakenly increments the reference count of the
struct pid twice, once through get_task_pid(), once through
get_pid(). The reference count is only decremented once on detach. As
a result, a struct pid is leaked and it reduces the number of
processes that can run simultaneously by one.
The fix is to simply remove the call to get_pid().
There is a separate patch for the user API, since it goes to
different kernel versions.
Signed-off-by: Frederic Barrat <fbar...@linux.vnet.ibm.com>
Cc: <sta...@vger.kernel.org> # 4.3+
Reviewed-by: Andrew Donnellan <andrew.donnel...@au1.ibm.com>
--
Andrew Donnellan Software Engineer, OzLabs
andrew.donnel...@au1.ibm.com Australia Development Lab, Canberra
+61 2 6201 8874 (work) IBM Australia Limited
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