From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f179.google.com (mail-pf0-f179.google.com [209.85.192.179]) by kanga.kvack.org (Postfix) with ESMTP id C68996B0262 for ; Tue, 5 Apr 2016 11:34:42 -0400 (EDT) Received: by mail-pf0-f179.google.com with SMTP id c20so12958501pfc.1 for ; Tue, 05 Apr 2016 08:34:42 -0700 (PDT) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org. [140.211.169.12]) by mx.google.com with ESMTPS id z4si8399760par.198.2016.04.05.08.34.41 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 05 Apr 2016 08:34:42 -0700 (PDT) Date: Tue, 5 Apr 2016 11:34:39 -0400 From: Greg KH Subject: Re: [BUG] lib: zram lz4 compression/decompression still broken on big endian Message-ID: <20160405153439.GA2647@kroah.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: Rui Salvaterra Cc: linux-kernel@vger.kernel.org, eunb.song@samsung.com, minchan@kernel.org, linux-mm@kvack.org On Tue, Apr 05, 2016 at 03:07:48PM +0100, Rui Salvaterra wrote: > Hi, > > > I apologise in advance if I've cc'ed too many/the wrong people/lists. > > Whenever I try to use zram with lz4, on my Power Mac G5 (tested with > kernel 4.4.0-16-powerpc64-smp from Ubuntu 16.04 LTS), I get the > following on my dmesg: > > [13150.675820] zram: Added device: zram0 > [13150.704133] zram0: detected capacity change from 0 to 5131976704 > [13150.715960] zram: Decompression failed! err=-1, page=0 > [13150.716008] zram: Decompression failed! err=-1, page=0 > [13150.716027] zram: Decompression failed! err=-1, page=0 > [13150.716032] Buffer I/O error on dev zram0, logical block 0, async page read > > I believe Eunbong Song wrote a patch [1] to fix this (or a very > identical) bug on MIPS, but it never got merged (maybe > incorrect/incomplete?). Is there any hope of seeing this bug fixed? > > > Thanks, > > Rui Salvaterra > > > [1] http://comments.gmane.org/gmane.linux.kernel/1752745 For some reason it never got merged, sorry, I don't remember why. Have you tested this patch? If so, can you resend it with your tested-by: line added to it? thanks, greg k-h -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org