[CC Super H maintainers: Sato-san and Rich Felker]
On Mon, Feb 29, 2016 at 12:03:38PM +0100, David Hildenbrand wrote: > > On 02/29/2016 09:24 AM, David Hildenbrand wrote: > > >> On 02/27/2016 03:28 PM, John Paul Adrian Glaubitz wrote: > > >>> Hi Hans! > > >>> > > >>> On 02/27/2016 03:20 PM, Geert Uytterhoeven wrote: > > >>>>> I noticed that 4.1 was ok and v4.2 wasn't, so I did a git bisect and > > >>>>> ended up with > > >>>>> commit 8222dbe21e79338de92d5e1956cd1e3994cc9f93 (sched/preempt, > > >>>>> mm/fault: Decouple > > >>>>> preemption from the page fault logic) as the culprit. > > >>> > > >>> If you like, please report this the kernel bug tracker and set > > >>> "Hardware" to "SuperH". This way we are able to keep track of > > >>> the issue. > > >>> > > >>> I think Yoshinori Sato and Rich Felker will have a look at this. > > >>> > > >>> Adrian > > >>> > > >> > > >> Done: https://bugzilla.kernel.org/show_bug.cgi?id=113321 > > >> > > >> Regards, > > >> > > >> Hans > > >> > > > > > > Looks like the code then requires to not be allowed to sleep/preempt in > > > these > > > sections (just like kmap_atomic, or kmap_coherent on mips). > > > > > > So the fix should be simple as (untested): > > > > That fixes it for me: > > > > Tested-by: Hans Verkuil <[email protected]> > > > > BTW, your patch is garbled and I had to manually make the change (not a big > > deal for a simple change like this). > > > > Thanks for testing. I just copy-pasted the patch, so this was somehow > expected :) > > @maintainers, how to proceed with this? Shall I send that patch again directly > to the linux-sh list? > > David
