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Message-ID: <c688c115af578e6b6ae18d0eabe4aded9db2aad9.camel@gmail.com>
Date: Sun, 29 Sep 2024 02:37:44 -0700
From: Eduard Zingerman <eddyz87@...il.com>
To: David Howells <dhowells@...hat.com>, Leon Romanovsky <leon@...nel.org>
Cc: Christian Brauner <brauner@...nel.org>, Manu Bretelle
 <chantr4@...il.com>,  asmadeus@...ewreck.org, ceph-devel@...r.kernel.org,
 christian@...uner.io,  ericvh@...nel.org, hsiangkao@...ux.alibaba.com,
 idryomov@...il.com,  jlayton@...nel.org, linux-afs@...ts.infradead.org,
 linux-cifs@...r.kernel.org,  linux-erofs@...ts.ozlabs.org,
 linux-fsdevel@...r.kernel.org,  linux-kernel@...r.kernel.org,
 linux-mm@...ck.org, linux-nfs@...r.kernel.org,  marc.dionne@...istor.com,
 netdev@...r.kernel.org, netfs@...ts.linux.dev,  pc@...guebit.com,
 smfrench@...il.com, sprasad@...rosoft.com, tom@...pey.com, 
 v9fs@...ts.linux.dev, willy@...radead.org
Subject: Re: [PATCH v2 19/25] netfs: Speed up buffered reading

On Sun, 2024-09-29 at 10:12 +0100, David Howells wrote:
> Can you try the attached?  I've also put it on my branch here:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/?h=netfs-fixes

Used your branch:
fc22830c5a07 ("9p: Don't revert the I/O iterator after reading")

dmesg is here:
https://gist.github.com/eddyz87/4cd50c2cf01323641999dc386e2d41eb

Still see null-ptr-deref.

[...]


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