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From: Alexander Potapenko <glider@google.com>
To: Ard Biesheuvel <ardb@kernel.org>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
	Boris Pismenny <borisp@nvidia.com>,
	John Fastabend <john.fastabend@gmail.com>,
	Jakub Kicinski <kuba@kernel.org>,
	herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org,
	syzkaller-bugs@googlegroups.com,
	syzbot <syzbot+828dfc12440b4f6f305d@syzkaller.appspotmail.com>,
	Eric Biggers <ebiggers@kernel.org>,
	Aviad Yehezkel <aviadye@nvidia.com>,
	Daniel Borkmann <daniel@iogearbox.net>,
	netdev@vger.kernel.org, "David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Paolo Abeni <pabeni@redhat.com>
Subject: Re: [PATCH] net: tls: enable __GFP_ZERO upon tls_init()
Date: Fri, 30 Jun 2023 12:10:25 +0200	[thread overview]
Message-ID: <CAG_fn=X+eU=-WLXASidBCHWS3L7RvtN=mx3Bj8GD9GcA=Htf2w@mail.gmail.com> (raw)
In-Reply-To: <CAMj1kXGHRUUFYL09Lm-mO6MfGc19rC=-7mSJ1eDTcbw7QuEkaw@mail.gmail.com>

On Fri, Jun 30, 2023 at 12:02 PM Ard Biesheuvel <ardb@kernel.org> wrote:
>
> On Fri, 30 Jun 2023 at 11:53, Tetsuo Handa
> <penguin-kernel@i-love.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

The config together with the repro is available at
https://syzkaller.appspot.com/bug?extid=828dfc12440b4f6f305d, see the
latest row of the "Crashes" table that contains a C repro.
Config: https://syzkaller.appspot.com/text?tag=KernelConfig&x=ee5f7a0b2e48ed66
Report: https://syzkaller.appspot.com/text?tag=CrashReport&x=1325260d900000
Syz repro: https://syzkaller.appspot.com/text?tag=ReproSyz&x=11af973e900000
C repro: https://syzkaller.appspot.com/text?tag=ReproC&x=163a1e45900000

The bug is reproducible for me locally as well (and Tetsuo's patch
makes it disappear, although I have no opinion on its correctness).

  reply	other threads:[~2023-06-30 10:11 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-10 14:09 KMSAN: uninit-value in aes_encrypt (4) syzbot
2020-09-11 17:01 ` [net/tls] " Eric Biggers
2023-06-28 13:48   ` [PATCH] net: tls: enable __GFP_ZERO upon tls_init() Tetsuo Handa
2023-06-28 21:03     ` Jakub Kicinski
2023-06-28 22:15       ` Tetsuo Handa
2023-06-30  8:15         ` Eric Biggers
2023-06-30  9:36     ` Ard Biesheuvel
2023-06-30  9:52       ` Tetsuo Handa
2023-06-30 10:02         ` Ard Biesheuvel
2023-06-30 10:10           ` Alexander Potapenko [this message]
2023-06-30 10:18             ` Ard Biesheuvel
2023-06-30 11:11               ` Tetsuo Handa
2023-06-30 11:24                 ` Eric Dumazet
2023-06-30 11:32                 ` Ard Biesheuvel
2023-06-30 11:43                   ` Alexander Potapenko
2023-06-30 11:37               ` Alexander Potapenko
2023-06-30 11:49                 ` Ard Biesheuvel
2023-06-30 11:55                   ` Alexander Potapenko
2023-06-30 15:16                     ` Ard Biesheuvel
2023-06-30 15:27                       ` Jakub Kicinski
2023-06-30 15:50                         ` Ard Biesheuvel
2023-07-01  4:12                       ` Tetsuo Handa
2023-07-04 13:32                         ` Tetsuo Handa
2023-07-06 20:53                           ` Jakub Kicinski
2023-07-07  9:41                             ` Tetsuo Handa
2023-07-08 10:34                               ` Tetsuo Handa

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