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Re: [PATCH] xen/sched: fix rare error case in cpu_schedule_down()
- To: Juergen Gross <jgross@xxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 25 Jun 2024 10:33:15 +0200
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- Cc: George Dunlap <george.dunlap@xxxxxxxxxx>, Dario Faggioli <dfaggioli@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 25 Jun 2024 08:33:31 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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?
Jan
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