From: Jakub Kicinski <kuba@kernel.org>
Date: Thu, 27 Mar 2025 12:51:19 -0700

On Tue, 25 Mar 2025 12:58:12 -0700 Kuniyuki Iwashima wrote:

quoted

I got a report that UDP mem usage in /proc/net/sockstat did not
drop even after an application was terminated.

The issue could happen if sk->sk_rmem_alloc wraps around due
to a large sk->sk_rcvbuf, which was INT_MAX in our case.

The patch 2 fixes the issue, and the patch 1 fixes yet another
overflow I found while investigating the issue.

Selftest doesn't apply after the net-next PR :(

Will send v3 shortly with so_rcv_listener sorted.

Thanks!