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

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Message-ID: <f70b043f-3444-a6d3-81cf-66af515a8b3c@I-love.SAKURA.ne.jp>
Date: Sat, 8 Jul 2023 19:34:43 +0900
From: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To: Jakub Kicinski <kuba@...nel.org>
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 2023/07/07 18:41, Tetsuo Handa wrote:
> On 2023/07/07 5:53, Jakub Kicinski wrote:
>> 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 :(

(Returned from https://lkml.kernel.org/r/20230707180901.34c17465@kernel.org .)

It seems that a series of changes that was merged in this merge window
made this problem no longer reproducible. ;-)

Which commit should we mark as a fix for this problem?