From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from zeniv.linux.org.uk (zeniv.linux.org.uk [62.89.141.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5CF3236D4F7; Mon, 1 Dec 2025 14:06:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=62.89.141.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764598020; cv=none; b=X5FW290n/7tusIfJ1mq3HykVQevFROFnm/HtZtFJWneEpqJkohpYn+3GT5r30Y2qrRQ1AYtJS1xGEtGklbGg++q85Z4LGhYfzobkMw67AvigEXmeYMbRxmkRFy7vbU/kduf9N48qdU0sOKmKtYCUrXn9FUlbgr/7UWO38XuRN04= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764598020; c=relaxed/simple; bh=xkJV2RQ5thOHN5xLDiAtxUQi4p9zL3HGEOIM9nz6ZFU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=hfM8EHCT4RCzblj8XBnPa1W1E7pHU3NiQ1wxeyhSzjOqKuMdCTBqQUOPVNnueNMwm60JpbRuZFMVfxozWqFuIEZg5JdW8vZiROgLjg4/4yLJPnqDpCk21BmDwoHnP7BbXAlsDByAEML/SKg96ocbIS+vpoynXP0BhDgjKm6fINE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zeniv.linux.org.uk; spf=none smtp.mailfrom=ftp.linux.org.uk; dkim=pass (2048-bit key) header.d=linux.org.uk header.i=@linux.org.uk header.b=Q1Rn0lHV; arc=none smtp.client-ip=62.89.141.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zeniv.linux.org.uk Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=ftp.linux.org.uk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linux.org.uk header.i=@linux.org.uk header.b="Q1Rn0lHV" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=linux.org.uk; s=zeniv-20220401; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=NJSpfg09ytdxsDNnz399hBNN4+NwPk9HPsXaFaTD/Vo=; b=Q1Rn0lHVWATCGNDptbtIctMGKp 2kVg12vgNnDUfmo+VMq9EONH2qn9fM9/BE05/Z3btpbBIPgo5pt3dOymfPAglkVLvJdmqzws8ky1w bikQkJP/lO7m46OGz1vwLFkI/z+PVJaWB4mDmSSGEw65/FHYW/TxKv67IJXT9+ryKIsxqLnIdbfsR sxKaXhIpkBLQWgPSBk/xDf3Xzp7AvGHS7Mj3b40WytmFtmDWP/3RwBpUtB+9ldBzOBnamPynHEAvw /xNh5Bj4jh3siVwEA8QlUejG8tNwtCsx90xbpCQUrB3zQrrs9VbEPpCLlIPhyJmucsdNj+koUW29o tB+wm82Q==; Received: from viro by zeniv.linux.org.uk with local (Exim 4.99 #2 (Red Hat Linux)) id 1vQ4YV-00000000IVw-2vBB; Mon, 01 Dec 2025 14:07:07 +0000 Date: Mon, 1 Dec 2025 14:07:07 +0000 From: Al Viro To: Mateusz Guzik Cc: syzbot , brauner@kernel.org, jack@suse.cz, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, Linus Torvalds Subject: Re: [syzbot] [fs?] kernel BUG in sctp_getsockopt_peeloff_common Message-ID: <20251201140707.GF3538@ZenIV> References: <692d66d3.a70a0220.2ea503.00b2.GAE@google.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: Al Viro 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.