linux-kernel - Re: [PATCH v2 1/5] nfsd: prevent callback tasks running concurrently

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Message-ID: <46AD5DEB9010FAAF+d05a1cd9-f287-4bb6-ad83-233db3ce9db4@chenxiaosong.com>
Date: Mon, 16 Jun 2025 20:18:11 +0800
From: ChenXiaoSong <chenxiaosong@...nxiaosong.com>
To: Jeff Layton <jlayton@...nel.org>
Cc: Olga Kornievskaia <okorniev@...hat.com>,
 Li Lingfeng <lilingfeng3@...wei.com>, Dai Ngo <Dai.Ngo@...cle.com>,
 Neil Brown <neilb@...e.de>, Chuck Lever <chuck.lever@...cle.com>,
 Tom Talpey <tom@...pey.com>, linux-nfs@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/5] nfsd: prevent callback tasks running concurrently

OK, I'll try to reproduce it. Thanks for your reply.

在 2025/6/16 20:09, Jeff Layton 写道:
> Not right offhand. My first guess would be some sort of UAF. Maybe a
> nfs4_client refcounting issue? If this is reproducible then you may
> want to turn up KASAN which might give you more info.
> 
> That said, 4.19.90 is more than 6 years old at this point. You may want
> to consider moving to something more recent.