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

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Message-ID: <CAMj1kXGHRUUFYL09Lm-mO6MfGc19rC=-7mSJ1eDTcbw7QuEkaw@mail.gmail.com>
Date: Fri, 30 Jun 2023 12:02:06 +0200
From: Ard Biesheuvel <ardb@...nel.org>
To: Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>
Cc: Boris Pismenny <borisp@...dia.com>, John Fastabend <john.fastabend@...il.com>, 
	Jakub Kicinski <kuba@...nel.org>, glider@...gle.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 Fri, 30 Jun 2023 at 11:53, Tetsuo Handa
<penguin-kernel@...ove.sakura.ne.jp> wrote:
>
> On 2023/06/30 18:36, Ard Biesheuvel wrote:
> > Why are you sending this now?
>
> Just because this is currently top crasher and I can reproduce locally.
>
> > Do you have a reproducer for this issue?
>
> Yes. https://syzkaller.appspot.com/text?tag=ReproC&x=12931621900000 works.
>

Could you please share your kernel config and the resulting kernel log
when running the reproducer? I'll try to reproduce locally as well,
and see if I can figure out what is going on in the crypto layer