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[2620:137:e000::1:20]) by mx.google.com with ESMTP id f13-20020a056402160d00b0052335677450si8552084edv.637.2023.08.14.09.56.26; Mon, 14 Aug 2023 09:56:55 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=DWdF6Uzi; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232908AbjHNPYr (ORCPT + 99 others); Mon, 14 Aug 2023 11:24:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34138 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229487AbjHNPYm (ORCPT ); Mon, 14 Aug 2023 11:24:42 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BF49FE7E for ; Mon, 14 Aug 2023 08:24:41 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 5559963478 for ; Mon, 14 Aug 2023 15:24:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6043CC433C7; Mon, 14 Aug 2023 15:24:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1692026680; bh=qs1SjNIypkGp+C7wohPlxBLFU3leZyt0yoMJ9I6/Pj4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=DWdF6Uzi1H8JnmoxAQCcvD5vAoM0wCDqkDzFxD18CDOzVV4cn1VdiaOfKrJQJSuwI GvdEEKCOU7wBzarwljNNld9jPrdTUm8MmGR18ccn4CkkqlyyPW6SM3cyYIgol6ZriR qE5+C3p23gu3/pJ1iEOm1ZdgCCB1iKaxHHNxjCeQ= Date: Mon, 14 Aug 2023 17:24:37 +0200 From: Greg KH To: Yikebaer Aizezi Cc: linux-kernel@vger.kernel.org, tj@kernel.org Subject: Re: WARNING in kernfs_remove_by_name_ns Message-ID: <2023081404-stuffy-relic-d126@gregkh> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 14, 2023 at 02:49:47PM +0800, Yikebaer Aizezi wrote: > Hello, > > When using Healer to fuzz the Linux-6.5-rc5, the following crash > was triggered. > > HEAD commit: 52a93d39b17dc7eb98b6aa3edb93943248e03b2f (tag: v6.5-rc5) > git tree: upstream > > And I also tried to reproduce this crash on Latest Linux-6.5-rc6, it > still exist. Great, can you work with the proper subsystem maintainers to resolve this (hint, look at the traceback, it's not a sysfs issue...) Wait: > memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=8437 'syz-executor' > loop1: detected capacity change from 0 to 32768 > BTRFS: device fsid 84eb0a0b-d357-4bc1-8741-9d3223c15974 devid 1 > transid 7 /dev/loop1 scanned by syz-executor (8437) > BTRFS info (device loop1): using xxhash64 (xxhash64-generic) checksum algorithm > BTRFS info (device loop1): disk space caching is enabled > BTRFS info (device loop1): enabling ssd optimizations > BTRFS info (device loop1): auto enabling async discard > FAULT_INJECTION: forcing a failure. You forced a failure, and look, things failed! Success! Why is this an issue, don't force failures, and then all should be good, right? thanks, greg k-h