Re: [PATCH 2/2] vsock/test: Add test for a linear and non-linear skb getting coalesced

[Michal Luczaj <mhal@rbox.co>]

On 1/12/26 14:44, Stefano Garzarella wrote:
> On Sun, Jan 11, 2026 at 11:59:54AM +0100, Michal Luczaj wrote:
>>>> diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
>>>> index bbe3723babdc..21c8616100f1 100644
>>>> --- a/tools/testing/vsock/vsock_test.c
>>>> +++ b/tools/testing/vsock/vsock_test.c
>>>> @@ -2403,6 +2403,11 @@ static struct test_case test_cases[] = {
>>>> 		.run_client = test_stream_accepted_setsockopt_client,
>>>> 		.run_server = test_stream_accepted_setsockopt_server,
>>>> 	},
>>>> +	{
>>>> +		.name = "SOCK_STREAM MSG_ZEROCOPY coalescence corruption",
>>>
>>> This is essentially a regression test for virtio transport, so I'd add
>>> virtio in the test name.
>>
>> Isn't virtio transport unaffected? It's about loopback transport (that
>> shares common code with virtio transport).
> 
> Why virtio transport is not affected?

With the usual caveat that I may be completely missing something, aren't
all virtio-transport's rx skbs linear? See virtio_vsock_alloc_linear_skb()
in virtio_vsock_rx_fill().