From: Eric Dumazet
Date: Tue, 5 Jun 2018 06:06:19 -0700
> Before using nla_get_u32(), better make sure the attribute
> is of the proper size.
>
> Code recently was changed, but bug has been there from beginning
> of git.
...
> Fixes: a919525ad832 ("net: Move fib_convert_metrics to metrics file
Before using nla_get_u32(), better make sure the attribute
is of the proper size.
Code recently was changed, but bug has been there from beginning
of git.
BUG: KMSAN: uninit-value in rtnetlink_put_metrics+0x553/0x960
net/core/rtnetlink.c:746
CPU: 1 PID: 14139 Comm: syz-executor6 Not tainted 4.17
