Re: [tip:sched/core] [sched/fair] 79104becf4: BUG:kernel_NULL_pointer_dereference,address

[Peter Zijlstra]

On Mon, Oct 27, 2025 at 03:07:18PM +0100, Peter Zijlstra wrote:
> On Mon, Oct 27, 2025 at 02:55:16PM +0100, Peter Zijlstra wrote:
> 
> > > May I know if you are using the kernel config 0day attached?
> > > I found that the config 0day attached
> > > (https://download.01.org/0day-ci/archive/20251021/202510211205.1e0f5223-lkp@xxxxxxxxx/config-6.18.0-rc1-00001-g79104becf42b)
> > > has
> > > CONFIG_IA32_EMULATION=y
> > > CONFIG_IA32_EMULATION_DEFAULT_DISABLED=y
> 
> Yep, deleting that entry makes it all work. 

'work' might be over stating, it boots and starts trinity, which then
promptly (as in a handful of seconds) triggers OOM and dies. Not
actually reproducing the NULL deref I was looking for.