06.07.2021 03:57, Peter Chen пишет: > On 21-07-05 01:54:26, Dmitry Osipenko wrote: >> The HNP work can be re-scheduled while it's still in-fly. This results in >> re-initialization of the busy work, resetting the hrtimer's list node of >> the work and crashing kernel with null dereference within kernel/timer >> once work's timer is expired. It's very easy to trigger this problem by >> re-plugging USB cable quickly. Initialize HNP work only once to fix this >> trouble. >> >> Cc: stable@xxxxxxxxxxxxxxx >> Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx> > > Acked-by: Peter Chen <peter.chen@xxxxxxxxxx> > > It is better to append kernel dump if you have v4 patchset. The stacktrace isn't very useful because it crashes within a hrtimer code from a work thread, i.e. it doesn't point at usb at all. It actually took me some effort to find where the bug was.
