On Mon, Aug 26, 2019 at 10:44:31AM -0700, Matthew Garrett wrote: > On Mon, Aug 26, 2019 at 9:28 AM Jarkko Sakkinen > <jarkko.sakkinen@xxxxxxxxxxxxxxx> wrote: > > > > On Mon, Aug 26, 2019 at 11:30:27AM -0400, Peter Jones wrote: > > > Some machines generate a lot of event log entries. When we're > > > iterating over them, the code removes the old mapping and adds a > > > new one, so once we cross the page boundary we're unmapping the page > > > with the count on it. Hilarity ensues. > > > > > > This patch keeps the info from the header in local variables so we don't > > > need to access that page again or keep track of if it's mapped. > > > > > > Signed-off-by: Peter Jones <pjones@xxxxxxxxxx> > > > Tested-by: Lyude Paul <lyude@xxxxxxxxxx> > > > > Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx> > Acked-by: Matthew Garrett <mjg59@xxxxxxxxxx> > > Jarkko, these two should probably go to 5.3 if possible - I > independently had a report of a system hitting this issue last week > (Intel apparently put a surprising amount of data in the event logs on > the NUCs). OK, I can try to push them. I'll do PR today. /Jarkko
