Re: [PATCH] Input: evdev - Fix incorrect kfree of err_free_client after vzalloc

[David Rientjes]

On Thu, 12 Jun 2014, Yongtaek Lee wrote:

> This bug was introduced by commit 92eb77d ("Input: evdev - fall back
> to vmalloc for client event buffer").
> 
> vzalloc is used to alloc memory as fallback in case of failure
> of kzalloc. But err_free_client was not considered on below case.
> 1. kzalloc fail
> 2. vzalloc success
> 3. evdev_open_device fail
> 4. kfree
> 
> So that address checking is needed to call correct free function.
> 
> Signed-off-by: Yongtaek Lee <ytk.lee@xxxxxxxxxxx>
> Reviewed-by: Daniel Stone <daniels@xxxxxxxxxxxxx>

Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
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