Re: qemu-i386: perf: BUG: kernel NULL pointer dereference, address: 00000148

[Naresh Kamboju]

On Thu, 3 Nov 2022 at 02:54, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
>
> On Wed, Nov 02, 2022 at 06:42:52PM +0530, Naresh Kamboju wrote:
> > Following kernel BUG: noticed on qemu-i386 while running perf test suite
> > on stable-rc 6.0.7-rc1 the image was built with gcc-11.
> >
> > The System did not recover after the crash.
> >
> > Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>
>
> What is this a regression from?  Does this happen on older stable
> kernels?  Linus's tree?

This looks like an intermittent problem.
I have tested multiple times and found that it is an intermittent crash
with qemu-i386 while running stable-rc 6.x. That is the one of the reasons
for not including the stable list and not reporting this as a regression.

> How about 'git bisect'?

Since it is an intermittent crash it is hard to bisect.

- Naresh