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commita71ef31485upstream. Smatch is awesome. Fixes:32671e3799("perf: Disallow mis-matched inherited group reads") Reported-by: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>