Re: [PATCH] xen/grants: prevent integer overflow in gnttab_dma_alloc_pages()

Fri, 02 Sep 2022 00:02:18 -0700 

On 01.09.22 17:35, Dan Carpenter wrote:

The change from kcalloc() to kvmalloc() means that arg->nr_pages
might now be large enough that the "args->nr_pages << PAGE_SHIFT" can
result in an integer overflow.

Fixes: b3f7931f5c61 ("xen/gntdev: switch from kcalloc() to kvcalloc()")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>


Reviewed-by: Juergen Gross <jgr...@suse.com>


Juergen

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