Re: [PATCH bpf v2 2/2] selftests/bpf: add verifier test for PTR_TO_MEM spill

[Yonghong Song]

On 1/12/21 9:38 PM, Gilad Reti wrote:
> Add a test to check that the verifier is able to recognize spilling of
> PTR_TO_MEM registers, by reserving a ringbuf buffer, forcing the spill
> of a pointer holding the buffer address to the stack, filling it back
> in from the stack and writing to the memory area pointed by it.
>
> The patch was partially contributed by CyberArk Software, Inc.
>
> Signed-off-by: Gilad Reti <gilad.reti@xxxxxxxxx>

I didn't verify result_unpriv = ACCEPT part. I think it is correct
by checking code.

Acked-by: Yonghong Song <yhs@xxxxxx>