Re: [PATCH] vmalloc: Fix NULL pointer dereference in is_vm_area_hugepages()

[Uladzislau Rezki]

On Fri, May 29, 2026 at 10:24:12AM +0530, Dev Jain wrote:
> 
> 
> On 29/05/26 7:11 am, Hui Zhu wrote:
> > From: Hui Zhu <zhuhui@xxxxxxxxxx>
> > 
> > find_vm_area() can return NULL if the given address is not a valid
> > vmalloc area. Check the return value before dereferencing it to avoid
> > a kernel crash.
> > 
> > Fixes: 121e6f3258fe ("mm/vmalloc: hugepage vmalloc mappings")
> > Signed-off-by: Hui Zhu <zhuhui@xxxxxxxxxx>
> > ---
> 
> I think this makes sense from API PoV.
> 
> Reviewed-by: Dev Jain <dev.jain@xxxxxxx>
> 
Reviewed-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>

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Uladzislau Rezki