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[2620:137:e000::1:20]) by mx.google.com with ESMTP id x64-20020a638643000000b0050f8a43b1bdsi5013255pgd.181.2023.04.14.08.14.07; Fri, 14 Apr 2023 08:14:23 -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=@google.com header.s=20221208 header.b=BiV1ZX1X; 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=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230209AbjDNPKE (ORCPT + 99 others); Fri, 14 Apr 2023 11:10:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230156AbjDNPJ6 (ORCPT ); Fri, 14 Apr 2023 11:09:58 -0400 Received: from mail-wm1-x329.google.com (mail-wm1-x329.google.com [IPv6:2a00:1450:4864:20::329]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D82229EF7 for ; Fri, 14 Apr 2023 08:09:56 -0700 (PDT) Received: by mail-wm1-x329.google.com with SMTP id 5b1f17b1804b1-3f04275b2bdso135405e9.1 for ; Fri, 14 Apr 2023 08:09:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1681484995; x=1684076995; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=zCGUqGKs3tAkN4PWIVOkGhEmJaHLWss+zp+zjXoaqdA=; b=BiV1ZX1XVOjp3RYTp/kQgVb2NKLRT/hVMSM3sJFOjaKVbpQjPd+XrgO2+g/2vEuCPL VcJWkLr32iIkTFOyTc8Vz2wIvkclgb/IRQH208Qdx6xnVPE3waKluFljcnKdCG+cPg75 OJQTdsL9vKavdzdAUcRRxBiMUAecMmKCzJC57GLhDRXQRuW+b2pXWE9H9LvbwqJA09FM rJOYSBswFOdVXmeGy5nLNcWX/CjP/AOeQ06K+FNtIXQ6tYE18Y98ekB3NmeUkHscJMxK TgNYY0BoIF+xAHuneV6baHatEyNFKISfm3dJNyTjwEsWW7NpgTmeSODYjTwWK9zUWtcJ xynw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681484995; x=1684076995; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=zCGUqGKs3tAkN4PWIVOkGhEmJaHLWss+zp+zjXoaqdA=; b=jNNtX2I5XJH97uXB7R2eIXvccUsCnrPFJWbDeNejhU1LfMleqkMLQIZOQ3AUOEIs4X XvweImBJgA6MIHK+rJCZkNXEt7JuKj/h+xv/7of+ccoM9SLGzP8eAconxoYIWjRHFeSV IAde1mpr799QSYQyRzoJA/3LPCPJVNxxMkRQDXnKD7Xty+Wuilrd/O0X9kCsW9vpZIXL d0UmUa0vTMlekLCxSVGOZTtdK4E1G3+R8jUG7YWRf42QqtwyI33gYhGYjJhllbeBDmf9 5SHYabiSY/Vz1A4L6Gy7WD6XS6fUVrLJuQeX/AKandC9vwdwn5qKDjS9W3Vsfp1YXqih DMFw== X-Gm-Message-State: AAQBX9e3nT/OfUdgNh7+umox4+vnHKgnYM/hSlMLx0M1/2Ew+3HYrmJS Gn7sKs/+w1hRb2ob4vpuBakkszjX2s4IdrX9hIZqoQ== X-Received: by 2002:a05:600c:12c5:b0:3df:f3cb:e8ce with SMTP id v5-20020a05600c12c500b003dff3cbe8cemr107763wmd.7.1681484995027; Fri, 14 Apr 2023 08:09:55 -0700 (PDT) MIME-Version: 1.0 References: <000000000000d5a93805f8930638@google.com> In-Reply-To: From: Aleksandr Nogikh Date: Fri, 14 Apr 2023 17:09:42 +0200 Message-ID: Subject: Re: [syzbot] Monthly fuse report To: Miklos Szeredi Cc: Dmitry Vyukov , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, syzbot Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-17.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE,USER_IN_DEF_DKIM_WL,USER_IN_DEF_SPF_WL 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 Wed, Apr 12, 2023 at 3:52=E2=80=AFPM 'Miklos Szeredi' via syzkaller-bugs wrote: > > On Wed, 5 Apr 2023 at 11:00, syzbot > wrote: > > > > Hello fuse maintainers/developers, > > > > This is a 30-day syzbot report for the fuse subsystem. > > All related reports/information can be found at: > > https://syzkaller.appspot.com/upstream/s/fuse > > > > During the period, 0 new issues were detected and 0 were fixed. > > In total, 8 issues are still open and 34 have been fixed so far. > > > > Some of the still happening issues: > > > > Crashes Repro Title > > 146 Yes INFO: task hung in fuse_simple_request > > https://syzkaller.appspot.com/bug?extid=3D46fe899420456e0= 14d6b > > 26 Yes INFO: task hung in lookup_slow (3) > > https://syzkaller.appspot.com/bug?extid=3D7cfc6a4f6b025f7= 10423 > > 13 Yes INFO: task hung in walk_component (5) > > https://syzkaller.appspot.com/bug?extid=3D8fba0e0286621ce= 71edd > > Hi Dmitry, > > These all look like non-kernel deadlocks. > > AFAIR syzbot was taught about breaking these by "umount -f" or "echo 1 > > /sys/fs/fuse/connections/$DEV/abort", right? Hi Miklos, syzbot indeed writes 0x1 to each /sys/fs/fuse/connections/%s/abort See https://github.com/google/syzkaller/blob/ec410564b9e4ff241d1242febb29ed= a2ee28b50d/executor/common_linux.h#L4614 Some C reproducers (e.g. https://syzkaller.appspot.com/text?tag=3DReproC&x=3D128284a0b00000) also contain that piece of code. -- Aleksandr > > I wonder why they are still triggering a report then. > > Thanks, > Miklos > > -- > You received this message because you are subscribed to the Google Groups= "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an= email to syzkaller-bugs+unsubscribe@googlegroups.com. > To view this discussion on the web visit https://groups.google.com/d/msgi= d/syzkaller-bugs/CAJfpegsGjFQX9t_NS8-oiE0K8Y0xEmr60VXMg6d4HQCCXOrOXg%40mail= .gmail.com.