Re: [PATCH] xen/sched: fix rare error case in cpu_schedule_down()

[Jürgen Groß <jgross@xxxxxxxx>]

On 25.06.24 10:33, Jan Beulich wrote:
> On 25.06.2024 10:27, Juergen Gross wrote:
> > In case cpu_schedule_up() is failing to allocate memory for struct
> > sched_resource,
> Or (just to mention it again) in case the function isn't called at all
> because some earlier CPU_UP_PREPARE handler fails.
>
> > cpu_schedule_down() will be called with the
> > sched_resource pointer being NULL. This needs to be handled.
> >
> > Reported-by: Jan Beulich <jbeulich@xxxxxxxx>
> > Fixes: 207589dbacd4 ("xen/sched: move per cpu scheduler private data into struct 
> > sched_resource")
> > Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
>
> You didn't tag it for 4.19 and you also didn't Cc Oleksii, so I expect you
> deem this minor enough to be delayed until 4.20 opens, despite the Fixes:
> tag?
Correct.


Juergen