[PATCH 0/4] perf/arm-cmn: Add CMN-650 and CMN-700

[Qian Cai]

On Tue, May 10, 2022 at 06:50:56PM +0100, Robin Murphy wrote:
> Hmm, can you narrow it down a bit more to a particular patch and/or a
> specific reproducer? I don't see how it could really be crashing
> dereferencing event->pmu, especially since none of the code this early in
> event_init has even changed recently :/

Specifically, One of "e" == NULL in arm_cmn_filter_sel().

e = container_of(arm_cmn_event_attrs[i], typeof(*e), attr.attr);

Then, the next line will dereference it.