Re: 6.8 to 6.9.0-rc3: kernel NULL pointer dereference in pick_next_task_fair+0x89

[Peter Zijlstra]

On Tue, Apr 16, 2024 at 08:18:28AM +0200, Igor Raits wrote:
> Hello all,
> 
> We also see this issue quite frequently these days, however it gets
> slightly hidden behind printk issue so that full stacktrace can't be
> printed due to the deadlock.

Who is we and how do you make it go bang?

Having a semi reliable reproducer in hand would be a tremendous help.


Anywya, I've had:

schedtool -D -e bash -c "while :; make O=defconfig-build clean; make O=defconfig-build -j64; done"

running for an hour or so now, but no luck :/