Re: [PATCH] hv_netvsc: Add check for kvmalloc_array

From: Jiasheng Jiang
Date: Mon Mar 14 2022 - 04:07:34 EST


On Mon, Mar 14, 2022 at 03:33:49PM +0800, Greg KH wrote:
>> Thanks, I have tested the patch by kernel_patch_verify,
>
> What is that?

It a Linux kernel patch static verification helper tool.
Link: https://github.com/nmenon/kernel_patch_verify

>> and all the tests are passed.
>
> What tests exactly? How did you fail this allocation?

The failure of allocation is not included in the tests.
And as far as I know, there is not any tool that has the
ability to fail the allocation.
But I think that for safety, the cost of redundant and harmless
check is acceptable.
Also, checking after allocation is a good program pattern.

Thanks,
Jiang