On Mon, Oct 02, 2017 at 06:35:24PM -0500, Kim Phillips wrote: [trim other stuff]
> Meanwhile, when I build this v5 arm_spe_pmu as a module, load it, do a > perf list, rmmod it, then re-load it, I get an Oops: > > # insmod arm_spe_pmu.ko > [ 2018.623646] arm_spe_pmu spe-pmu@0: probed for CPUs 0-3 [max_record_sz 64, > align 1, features 0xf] > [ 2018.626346] arm_spe_pmu spe-pmu@1: probed for CPUs 4-7 [max_record_sz 64, > align 1, features 0xf] > # ./perf list > [ 2021.649688] Unable to handle kernel NULL pointer dereference at virtual > address 00000038 [...] Cheers for the report. Fix here: https://lkml.org/lkml/2017/10/3/564 Will