From: Fedor Pchelkin <pchelkin@ispras.ru>
To: Dmitry Antipov <dmantipov@yandex.ru>
Cc: "Christian König" <christian.koenig@amd.com>,
lvc-project@linuxtesting.org, dri-devel@lists.freedesktop.org,
"T.J. Mercier" <tjmercier@google.com>,
syzbot+5d4cb6b4409edfd18646@syzkaller.appspotmail.com,
linux-fsdevel@vger.kernel.org,
"Zhiguo Jiang" <justinjiang@vivo.com>,
"Sumit Semwal" <sumit.semwal@linaro.org>,
linux-media@vger.kernel.org
Subject: Re: [lvc-project] [PATCH] [RFC] dma-buf: fix race condition between poll and close
Date: Mon, 6 May 2024 09:52:50 +0300 [thread overview]
Message-ID: <20240506-6128db77520dbf887927bd4d-pchelkin@ispras.ru> (raw)
In-Reply-To: <5c8345ee-011a-4fa7-8326-84f40daf2f2c@yandex.ru>
On Fri, 03. May 14:08, Dmitry Antipov wrote:
> On 5/3/24 11:18 AM, Christian König wrote:
>
> > Attached is a compile only tested patch, please verify if it fixes your problem.
>
> LGTM, and this is similar to get_file() in __pollwait() and fput() in
> free_poll_entry() used in implementation of poll(). Please resubmit to
> linux-fsdevel@ including the following:
>
> Reported-by: syzbot+5d4cb6b4409edfd18646@syzkaller.appspotmail.com
> Closes: https://syzkaller.appspot.com/bug?extid=5d4cb6b4409edfd18646
> Tested-by: Dmitry Antipov <dmantipov@yandex.ru>
I guess the problem is addressed by commit 4efaa5acf0a1 ("epoll: be better
about file lifetimes") which was pushed upstream just before v6.9-rc7.
Link: https://lore.kernel.org/lkml/0000000000002d631f0615918f1e@google.com/
next prev parent reply other threads:[~2024-05-06 6:53 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20240423191310.19437-1-dmantipov@yandex.ru>
[not found] ` <85b476cd-3afd-4781-9168-ecc88b6cc837@amd.com>
[not found] ` <3a7d0f38-13b9-4e98-a5fa-9a0d775bcf81@yandex.ru>
[not found] ` <72f5f1b8-ca5b-4207-9ac9-95b60c607f3a@amd.com>
2024-05-03 7:07 ` [PATCH] [RFC] dma-buf: fix race condition between poll and close Dmitry Antipov
2024-05-03 8:18 ` Christian König
2024-05-03 11:08 ` Dmitry Antipov
2024-05-06 6:52 ` Fedor Pchelkin [this message]
2024-05-07 9:58 ` [lvc-project] " Christian König
2024-05-07 10:40 ` Daniel Vetter
2024-05-07 15:02 ` Christian König
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