On 1/22/19 11:15 PM, Hans van Kranenburg wrote: > On 1/22/19 11:08 PM, Boris Ostrovsky wrote: >> On 1/21/19 4:58 AM, gregkh@xxxxxxxxxxxxxxxxxxx wrote: >>> The patch below does not apply to the 4.14-stable tree. >>> If someone wants it applied there, or to any other stable or longterm >>> tree, then please email the backport, including the original git commit >>> id to <stable@xxxxxxxxxxxxxxx>. >> >> I am actually not convinced this fix is needed for 4.14 (or earlier). I >> couldn't reproduce this bug. >> >> I think we also need Pasha Tatashin's time series (38669ba205d1 and >> friends) for the problem to show up. > > It happens after f94c8d1169, and it was really easy to reproduce for me > (or not to) during bisecting. > > https://lists.xenproject.org/archives/html/xen-devel/2018-12/msg02356.html Wait, I have been horsing around in the 'normal' linux timeline of course with the bisecting, hopping from rc to rc, and not in the latest linux-stable versions of 4.14 etc. So, it's possible that things happened in there over time. But, in that case it would also be suspicious that some other commit would be covering up the issue, while I started out the investigation with 4.19... -- Hans van Kranenburg