Messages in this thread | | | Subject | Re: Bug: d0e936adbd22 crashes at boot | From | Jens Axboe <> | Date | Fri, 3 Sep 2021 08:15:29 -0600 |
| |
On 9/3/21 8:13 AM, Srinivas Pandruvada wrote: > Hi Axboe, > > Thanks for reporting. > On Fri, 2021-09-03 at 07:36 -0600, Jens Axboe wrote: >> Hi, >> >> Booting Linus's tree causes a crash on my laptop, an x1 gen9. This was >> a bit >> difficult to pin down as it crashes before the display is up, but I >> managed >> to narrow it down to: >> >> commit d0e936adbd2250cb03f2e840c6651d18edc22ace >> Author: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> >> Date: Thu Aug 19 19:40:06 2021 -0700 >> >> cpufreq: intel_pstate: Process HWP Guaranteed change notification >> >> which crashes with a NULL pointer deref in notify_hwp_interrupt() -> >> queue_delayed_work_on(). >> >> Reverting this change makes the laptop boot fine again. >> > Does this change fixes your issue?
I would assume so, as it's crashing on cpudata == NULL :-)
But why is it NULL? Happy to test patches, but the below doesn't look like a real fix and more of a work-around.
-- Jens Axboe
| |