Re: [PATCH] RDMA/rxe: Use kzalloc() to alloc map_set

[Li, Zhijian]

on 2022/5/20 22:45, Jason Gunthorpe wrote:
> On Wed, May 18, 2022 at 12:37:25PM +0800, Li Zhijian wrote:
> > Below call chains will alloc map_set without fully initializing map_set.
> > rxe_mr_init_fast()
> >   -> rxe_mr_alloc()
> >      -> rxe_mr_alloc_map_set()
> >
> > Uninitialized values inside struct rxe_map_set are possible to cause
> > kernel panic.
> If the value is uninitialized then why is 0 an OK value?
>
> Would be happier to know the exact value that is not initialized

Well, good question. After re-think of this issue, it seems this patch 
wasn't the root cause though it made the crash disappear in some extent.

I'm still working on the root cause :)

Thanks

Zhijian


> Jason