> I've read through this thread, but haven't had time to really debug it > yet. I did try a few test cases, and wasn't able to trigger anything. > The signal part is interesting, as it would cause parallel teardowns > potentially. And I did post a patch for that yesterday, where I did spot > a race in the user mm accounting. I don't think this is related to this > one, but would still be useful if you could test with this applied: > > https://lore.kernel.org/io-uring/20201217152105.693264-3-axboe@xxxxxxxxx/T/#u as you expected it didn't work, unfortunately I couldn't reproduce that in C..I'll try to debug in netty/kernel -- Josef
