On Wed, Feb 18, 2026 at 04:53:16PM +0800, David Gow wrote: > Le 17/02/2026 à 10:10 PM, 'Mark Brown' via KUnit Development a écrit :
> > When running KUnit via qemu on current mailine I'm seeing random > > lockups, frequently but not always reporting an RCU stall. > > Unfortunately these don't seem to happen in a consistent place which > > makes it hard to figure out exactly what's going on, they started in > Hmm… I haven't seen this yet on x86_64, but looking at arm64 and 32-bit > i386, I do see a sporadic panic, often with rcu in the stacktrace. Seems to > happen more often when the KUnit test kthread is starting/stopping > (particularly, at least on i386, if it's due to a trapped fault). I did see this on x86_64 FWIW. > I've not been able to reproduce it after reverting the kthread affinity > series (git revert -m1 d16738a4e79e55b2c3c9ff4fb7b74a4a24723515), but that > could just be due to luck. It's flaky enough that my attempt at bisection > kept pointing at documentation patches. Yeah, it's not reliably reproducible though it happens pretty often. I did try things like retrying N times to see if it fails but I have a horrible feeling there's some dependency on the specific build somehow. Hopefully not.
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