From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 34AA6C77B7E for ; Tue, 2 May 2023 15:24:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234542AbjEBPYF (ORCPT ); Tue, 2 May 2023 11:24:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41484 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234529AbjEBPYC (ORCPT ); Tue, 2 May 2023 11:24:02 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6A0CC2733; Tue, 2 May 2023 08:24:01 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 2887F221E4; Tue, 2 May 2023 15:24:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1683041040; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=CW2LmtNuVSk94mDGCMJ1mJ80jVCNsh4d9/7vaIxHDh4=; b=zmNqwLSpBWozv3WsgFDqblkqkj9YdB1XZJul6aUiQSjbiUCMHugcr7A/qB/Fc8IZEgsQuy W5QfK5czrPgcnazCSULSiL7uuPkMs+eozDD0QfQIt8ZSFFR3hmCYWD4F7G/QyyCJ5IwVwO NIFVSlNrRVnz1UsSSyNMx1F255/Ky/0= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1683041040; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=CW2LmtNuVSk94mDGCMJ1mJ80jVCNsh4d9/7vaIxHDh4=; b=QPq4qeoLoFSA33UzVko5Z22yyv8ooaSf9wwviyeAHUoGDVBMTeOEUBFtQ6Gt3OJt7/tFNo DTzIsExRsdEGGQCA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id C9F9F134FB; Tue, 2 May 2023 15:23:59 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id erhcLw8rUWQGIAAAMHmgww (envelope-from ); Tue, 02 May 2023 15:23:59 +0000 Message-ID: Date: Tue, 2 May 2023 17:23:59 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.10.0 To: Sergey Senozhatsky , Petr Vorel Cc: Minchan Kim , ltp@lists.linux.it, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Nitin Gupta , Jens Axboe , OGAWA Hirofumi , Yang Xu References: <20221107191136.18048-1-pvorel@suse.cz> <3ac740c0-954b-5e68-b413-0adc7bc5a2b5@suse.cz> <9489dd1c-012c-8b5d-b670-a27213da287a@suse.cz> Content-Language: en-US From: Martin Doucha Subject: Re: [PATCH 0/1] Possible bug in zram on ppc64le on vfat In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 29. 11. 22 5:38, Sergey Senozhatsky wrote: > On (22/11/22 16:07), Petr Vorel wrote: >> Martin, thanks a lot for reruning tests. I wonder problems on /dev/zero is a >> kernel bug or just problem which should be workarounded. > > Hmm. Does CONFIG_KASAN show anything interesting? Sorry for the delay. We've tried to reproduce the bug with CONFIG_KASAN enabled but the only affected arch is PPC64LE and KASAN is not available there at all. Our kernel maintainers confirmed that if we need KASAN to debug this, we're out of luck. -- Martin Doucha mdoucha@suse.cz QA Engineer for Software Maintenance SUSE LINUX, s.r.o. CORSO IIa Krizikova 148/34 186 00 Prague 8 Czech Republic