Hello, On Tue, Oct 22, 2024 at 01:19:58PM -0700, Alexei Starovoitov wrote: > > The __nullable argument tagging request was originally from sched_ext but I also > > don't see its usage in-tree for now. > > ok. Let's sync up with Tejun whether they have plans to use it. Yeah, in sched_ext_ops.dispatch(s32 cpu, struct task_struct *prev), @prev can be NULL and right now if a BPF scheduler derefs without checking for NULL, it can trigger kernel crash, I think, so it needs __nullable tagging. Thanks. -- tejun
