Will Deacon <will.dea...@arm.com> writes:
> A little bit of digging suggests that the preempt count isn't balanced
> across the call to perf_pmu_output_stop from perf_mmap_close. Further
> digging revealed the unbalanced get_cpu_ptr in __perf_pmu_output_stop.
> Fix below!
Oh gee, that's embarrassing. Thanks!
> This patch uses this_cpu_ptr instead of get_cpu_ptr, since preemption is
> already disabled by the caller.
>
> Fixes: 95ff4ca26c49 ("perf/core: Free AUX pages in unmap path")
> Cc: Alexander Shishkin <alexander.shish...@linux.intel.com>
> Cc: Peter Zijlstra <pet...@infradead.org>
> Signed-off-by: Will Deacon <will.dea...@arm.com>
Reviewed-by: Alexander Shishkin <alexander.shish...@linux.intel.com>
Regards,
--
Alex
