On Tue, 9 Sep 2025 11:08:46 +0200 Matthieu Baerts wrote:

quoted

Note that mptcp_pm_parse_entry has this, which should maybe be fixed at
the same time:

	u32 val = nla_get_s32(tb[MPTCP_PM_ADDR_ATTR_IF_IDX]);  

Good catch!

indeed!

This should be fixed in a dedicated patch, because this fixes commit:
ef0da3b8a2f1 ("mptcp: move address attribute into mptcp_addr_info"), a
different commit than the one being fixed here.

int = u32 is unlikely to cause issues AFAIU. We recently applied 
a bunch of such fixes to net-next. I think this can also go to -next.