From: Eric Dumazet <[email protected]>
Date: Thu, 14 May 2020 13:58:13 -0700
> If user provides wrong virtual address in TCP_ZEROCOPY_RECEIVE
> operation we want to return -EINVAL error.
>
> But depending on zc->recv_skip_hint content, we might return
> -EIO error if the socket has SOCK_DONE set.
>
> Make sure to return -EINVAL in this case.
>
> BUG: KMSAN: uninit-value in tcp_zerocopy_receive net/ipv4/tcp.c:1833 [inline]
...
> Fixes: 05255b823a61 ("tcp: add TCP_ZEROCOPY_RECEIVE support for zerocopy
> receive")
> Signed-off-by: Eric Dumazet <[email protected]>
> Reported-by: syzbot <[email protected]>
Series applied and queued up for -stable, thanks.
