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Re: [PATCH] compat/memory: avoid UB shifts in XENMEM_exchange handling
- To: Jan Beulich <jbeulich@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jason Andryuk <jason.andryuk@xxxxxxx>
- Date: Thu, 17 Apr 2025 12:50:25 -0400
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Manuel Andreas <manuel.andreas@xxxxxx>
- Delivery-date: Thu, 17 Apr 2025 16:50:55 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 2025-04-17 10:08, Jan Beulich wrote:
Add an early basic check, yielding the same error code as the more
thorough on the the main handler would produce.
"as the more thorough check in the main handler"...
Fixes: b8a7efe8528a ("Enable compatibility mode operation for
HYPERVISOR_memory_op")
Reported-by: Manuel Andreas <manuel.andreas@xxxxxx>
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
With that:
Reviewed-by: Jason Andryuk <jason.andryuk@xxxxxxx>
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