26.02.2025 14:48, Alexander Korotkov пишет: > Hi, Michael! > > On Wed, Feb 26, 2025 at 3:04 AM Michael Paquier <mich...@paquier.xyz> wrote: >> >> On Tue, Feb 25, 2025 at 05:19:29PM +0200, Alexander Korotkov wrote: >>> It seems that I managed to reproduce the issue on my Raspberry PI 4. >>> After running our test suite in a loop for 2 days I found one timeout. >> >> Hmm. It's surprising to not see a higher occurence. My buildfarm >> host has caught that on its first run after the patch, for two >> different animals which are both on the same machine. >> >>> One way or another, we need protection against this situation any way. >>> The updated patch is attached. Now, after acquiring ReservedPtr it >>> waits till OldPageRqstPtr gets initialized. Additionally I've to >>> implement more accurate calculation of OldPageRqstPtr. I run tests >>> with new patch on my Raspberry in a loop. Let's see how it goes. >> >> Perhaps you'd prefer that I do more tests with your patch? This is >> time-consuming for you. This is not a review of the internals of the >> patch, and I cannot give you access to the host, but if my stuff is >> the only place where we have a good reproducibility of the issue, I'm >> OK to grab some time and run a couple of checks to avoid again a >> freeze of the buildfarm. > > Thank you for offering the help. Updated version of patch is attached > (I've added one memory barrier there just in case). I would > appreciate if you could run it on batta, hachi or similar hardware.
Good day, Alexander. Checked your additions to patch. They're clear and robust. ------- regards Yura Sokolov aka funny-falcon
