From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org
X-Spam-Level: 
X-Spam-Status: No, score=-1.0 required=5.0 tests=MAILING_LIST_MULTI,
	RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4
Received: (qmail 10353 invoked from network); 2 Jan 2021 18:38:45 -0000
Received: from krantz.zx2c4.com (192.95.5.69)
  by inbox.vuxu.org with ESMTPUTF8; 2 Jan 2021 18:38:45 -0000
Received: 
	by krantz.zx2c4.com (ZX2C4 Mail Server) with ESMTP id 5bb50df9;
	Sat, 2 Jan 2021 18:28:04 +0000 (UTC)
Return-Path: <nuxi@vault24.org>
Received: from pinero.vault24.org (pinero.vault24.org [69.164.212.126])
 by krantz.zx2c4.com (ZX2C4 Mail Server) with ESMTPS id 07dc8814
 (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO) for <cgit@lists.zx2c4.com>;
 Sat, 2 Jan 2021 18:28:03 +0000 (UTC)
Received: from feynman.vault24.org (c-98-243-50-21.hsd1.mi.comcast.net
 [98.243.50.21])
 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
 key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256)
 (No client certificate requested)
 by pinero.vault24.org (Postfix) with ESMTPS id 77D7760CF
 for <cgit@lists.zx2c4.com>; Sat,  2 Jan 2021 13:38:40 -0500 (EST)
Received: by feynman.vault24.org (Postfix, from userid 1000)
 id 99FF8302DCE3; Sat,  2 Jan 2021 13:38:39 -0500 (EST)
Date: Sat, 2 Jan 2021 13:38:39 -0500
From: Jon DeVree <nuxi@vault24.org>
To: cgit@lists.zx2c4.com
Subject: Re: cgit 1.2.3: lighttpd 1.4.57, AlpineLinux [edge]: using cache
 breaks delivery
Message-ID: <X/C9rxfAjgWsXZN+@feynman.vault24.org>
Mail-Followup-To: cgit@lists.zx2c4.com
References: <20201221162619.wYrRU%steffen@sdaoden.eu>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
In-Reply-To: <20201221162619.wYrRU%steffen@sdaoden.eu>
X-BeenThere: cgit@lists.zx2c4.com
X-Mailman-Version: 2.1.30rc1
Precedence: list
List-Id: List for cgit developers and users <cgit.lists.zx2c4.com>
List-Unsubscribe: <https://lists.zx2c4.com/mailman/options/cgit>,
 <mailto:cgit-request@lists.zx2c4.com?subject=unsubscribe>
List-Archive: <http://lists.zx2c4.com/pipermail/cgit/>
List-Post: <mailto:cgit@lists.zx2c4.com>
List-Help: <mailto:cgit-request@lists.zx2c4.com?subject=help>
List-Subscribe: <https://lists.zx2c4.com/mailman/listinfo/cgit>,
 <mailto:cgit-request@lists.zx2c4.com?subject=subscribe>
Errors-To: cgit-bounces@lists.zx2c4.com
Sender: "CGit" <cgit-bounces@lists.zx2c4.com>

I think that this is a bug in the 5.10 kernel.

I just hit it on a previously working cgit host by upgrading the kernel
from 5.9.15 to 5.10.4. Downgrading the kernel back to 5.9.15 fixes it.

I'm guessing it was broken by 36e2c7421f02 ("fs: don't allow splice
read/write without explicit ops") because if I crank up kernel logging I
get:

    splice write not supported for file  (pid: 2522 comm: cgit.cgi)

-- 
Jon
Doge Wrangler
X(7): A program for managing terminal windows. See also screen(1) and tmux(1).