linux-kernel - Re: [PATCH] eventpoll: Fix semi-unbounded recursion

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Message-ID: <CAG48ez0fWFjw8-RCLfKGXR4aNaRfZ37-GdDH=Rw2TFupAhocVg@mail.gmail.com>
Date: Fri, 11 Jul 2025 18:38:16 +0200
From: Jann Horn <jannh@...gle.com>
To: Alexander Viro <viro@...iv.linux.org.uk>, Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	stable@...r.kernel.org
Subject: Re: [PATCH] eventpoll: Fix semi-unbounded recursion

On Fri, Jul 11, 2025 at 6:33 PM Jann Horn <jannh@...gle.com> wrote:
> A more thorough check is done in reverse_path_check() after the new graph
> edge has already been created; this checks, among other things, that no
> paths going upwards from any non-epoll file with a length of more than 5
> edges exist. However, this check does not apply to non-epoll files.

... of course directly after sending this I notice that I put one too
many negations in this sentence.

s/does not apply to non-epoll files/does not apply to epoll files/