[LTP] [PATCH] sctp/sctp_big_chunk.c: Add a hint on failure with EINVAL

[Alexey Kodanev]

On 05.04.2018 13:27, Xiao Yang wrote:
> If two ipv6 addresses have same family, a buggy kernel(e.g. RHEL6) lacked
> the port check for them, and made this test get a failure with EINVAL:
> -------------------------------------------------------------------------
> safe_net.c:160: BROK: sctp_big_chunk.c:77: setsockopt(4, 132, 100, 0x7ffdbaac83a0, 91644) failed: EINVAL
> -------------------------------------------------------------------------
> 
> If you want to know detailed info for the bug, please see the following commit:
> '40b4f0f (sctp: lack the check for ports in sctp_v6_cmp_addr)'
> 
> We just want to hint users about the likely cause of the failure.

I guess, the test will fail with EINVAL with this patch,

https://patchwork.ozlabs.org/patch/897172/

it tries to avoid the check with ports so it won't be possible
to pass the same addresses like the test does, it is currently
in ML.

The first version of the test would work but it can be slower
for some VMs, because it creates unique addresses.

http://lists.linux.it/pipermail/ltp/2018-March/007269.html

Thanks,
Alexey