Kernel prepatch 6.16-rc6

[Posted July 14, 2025 by corbet]

Linus has released 6.16-rc6 for testing; it includes a fix for a somewhat scary regression that came up over the week.

So I was flailing around blaming everybody and their pet hamster, because for a while it looked like a drm issue and then a netlink problem (it superficially coincided with separate issues with both of those subsystems).
But I did eventually figure out how to trigger it reliably and then it bisected nicely, and a couple of days have passed, and I'm feeling much better about the release again. We're back on track, and despite that little scare, I think we're in good shape.

Looks like someone else noticed the same bug

Posted Jul 14, 2025 5:08 UTC (Mon) by neggles (subscriber, #153254) [Link]

if anyone else is curious about what the relevant issue is/was, here's the message where Linus found the culprit, an attempted epoll priority inversion fix. I also found a patch from a few days ago that looks like a fix for the regression and the issue that it was originally trying to fix?