netdev - Re: [PATCH] net: tls: enable __GFP_ZERO upon tls

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Message-ID: <20230706135319.66d3cb78@kernel.org>
Date: Thu, 6 Jul 2023 13:53:19 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Cc: Ard Biesheuvel <ardb@...nel.org>, Alexander Potapenko
 <glider@...gle.com>, Boris Pismenny <borisp@...dia.com>, John Fastabend
 <john.fastabend@...il.com>, herbert@...dor.apana.org.au,
 linux-crypto@...r.kernel.org, syzkaller-bugs@...glegroups.com, syzbot
 <syzbot+828dfc12440b4f6f305d@...kaller.appspotmail.com>, Eric Biggers
 <ebiggers@...nel.org>, Aviad Yehezkel <aviadye@...dia.com>, Daniel Borkmann
 <daniel@...earbox.net>, netdev@...r.kernel.org, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Paolo Abeni
 <pabeni@...hat.com>
Subject: Re: [PATCH] net: tls: enable __GFP_ZERO upon tls_init()

On Tue, 4 Jul 2023 22:32:00 +0900 Tetsuo Handa wrote:
> I found a simplified reproducer.
> This problem happens when splice() and sendmsg() run in parallel.

Could you retry with the upstream (tip of Linus's tree) and see if it
still repros? I tried to get a KMSAN kernel to boot on QEMU but it
the kernel doesn't want to start, no idea what's going on :(