linux-kernel - Re: [syzbot] [fs?] kernel BUG in sctp_getsockopt_peeloff

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Message-ID: <20251202-sektflaschen-biologen-12303d3f052b@brauner>
Date: Tue, 2 Dec 2025 10:49:47 +0100
From: Christian Brauner <brauner@...nel.org>
To: Al Viro <viro@...iv.linux.org.uk>
Cc: Mateusz Guzik <mjguzik@...il.com>, 
	syzbot <syzbot+984a5c208d87765b2ee7@...kaller.appspotmail.com>, jack@...e.cz, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com, 
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [syzbot] [fs?] kernel BUG in sctp_getsockopt_peeloff_common

On Mon, Dec 01, 2025 at 02:07:07PM +0000, Al Viro wrote:
> On Mon, Dec 01, 2025 at 01:57:11PM +0100, Mateusz Guzik wrote:
> 
> > I suspect this is botched error handling in the recent conversion to
> > FD_PREPARE machinery.
> 
> Quite.  FWIW, at that point I believe that FD_ADD/FD_PREPARE branch
> is simply not ready - too little time in -next, if nothing else.
> 
> Christian, drop that pull request, please.

Fwiw, this conversion isn't in mainline. This is -next being out of
sync. Sorry I was too eager to push this. I just got excited about it.
I'm happy to send a revert in case Linus wants that.