linux-kernel - Re: Bug: slab-use-after-free Read in try_to_wake

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Message-ID: <2b186ee9-89cb-46f6-b1b2-3da51c82a5d1@gmail.com>
Date: Sat, 28 Dec 2024 12:13:19 +0000
From: Pavel Begunkov <asml.silence@...il.com>
To: Fudam <huk23@...udan.edu.cn>
Cc: Waiman Long <llong@...hat.com>, axboe@...nel.dk, peterz@...radead.org,
 mingo@...hat.com, will@...nel.org, boqun.feng@...il.com,
 linux-kernel@...r.kernel.org, jjtan24@...udan.edu.cn,
 io-uring@...r.kernel.org
Subject: Re: Bug: slab-use-after-free Read in try_to_wake_up

On 12/26/24 20:45, Fudam wrote:
>> Kun Hu, can you try out the patch I sent? It should likely be
>> it, but I couldn't reproduce without hand tailoring the kernel
>> code with sleeping and such.
> 
> 
> Okay, I’ll try again. Please wait for me for a moment. But you mean you couldn’t reproduce using the c program I provided unless you tailor the kernel code?

Right, it depends on timings / racy, so no wonder I wasn't able
to trigger it.

-- 
Pavel Begunkov