netdev - Re: [syzbot] [mptcp?] general protection fault in proc

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Message-ID: <20250105112948.GI1977892@ZenIV>
Date: Sun, 5 Jan 2025 11:29:48 +0000
From: Al Viro <viro@...iv.linux.org.uk>
To: Eric Dumazet <edumazet@...gle.com>
Cc: Matthieu Baerts <matttbe@...nel.org>, davem@...emloft.net,
	geliang@...nel.org, horms@...nel.org, kuba@...nel.org,
	linux-kernel@...r.kernel.org, martineau@...nel.org,
	mptcp@...ts.linux.dev, netdev@...r.kernel.org, pabeni@...hat.com,
	syzkaller-bugs@...glegroups.com,
	syzbot <syzbot+e364f774c6f57f2c86d1@...kaller.appspotmail.com>
Subject: Re: [syzbot] [mptcp?] general protection fault in proc_scheduler

On Sun, Jan 05, 2025 at 09:32:36AM +0100, Eric Dumazet wrote:

> According to grep, we have many other places directly reading
> current->nsproxy->net_ns
> For instance in net/sctp/sysctl.c
> Should we change them all ?

Depends - do you want their contents match the netns of opener (as,
AFAICS, for ipv4 sysctls) or that of the reader?