From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B38D914F84 for ; Wed, 12 Jul 2023 18:54:35 +0000 (UTC) Received: from mail-ot1-f72.google.com (mail-ot1-f72.google.com [209.85.210.72]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1BB491FC1 for ; Wed, 12 Jul 2023 11:54:34 -0700 (PDT) Received: by mail-ot1-f72.google.com with SMTP id 46e09a7af769-6b75210454eso8394086a34.2 for ; Wed, 12 Jul 2023 11:54:34 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689188073; x=1691780073; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=iZMH+f/qQs35ft7PcSxeJWZ8yv3i3Olk8Bn6x6Aux/0=; b=TYUjbeUQrGv3JSqKHdIrBs2F65FyJzeoodY8naB2+A1odrWQbLVfzya7PfVYiIJ4Pm FCc574M/g6ecU39NdxOz6+/XEjb8a445QGmPtvMHw0jdEIRP7hqarJy71guaHKI2/P3g zX6haD383UDK7FkuGIGxy9qMxDlaJpGv3ItxL12SIetnMZiaJZElEgbngdDS5/03k0bN evl49P5GYRO/KAzPKHwv7KyYLMhZ2iil/EErmaGOmGE1QmywFrYZbxfFq3szAw5LA3ek GfXMQfgCStRDdCsVDaaBde+sfqGGX1UJDg7PkvTGbhEFmfKZ9Lj1PPELTIYAIQ8/z784 mQeA== X-Gm-Message-State: ABy/qLYaZlvj6++04KvKFu1JW6jI8sEcDunQy/nBdxBBdJOeFPAsTKjz OKlnHFL6uJXU/0N4d8prSVFO++koKI3NM+GyCBLkdXHlWmWp X-Google-Smtp-Source: APBJJlFsJIcb0rdx4JjgRS1wq5NhoTjU9MPmFzmv1EP3Vle1AIKr62xgl7dheKEiVE6GkXdOnIQBkcJkfp2R0puLgy6N5pzwWkeT Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6830:2056:b0:6af:a3de:5d26 with SMTP id f22-20020a056830205600b006afa3de5d26mr6113119otp.7.1689188073476; Wed, 12 Jul 2023 11:54:33 -0700 (PDT) Date: Wed, 12 Jul 2023 11:54:33 -0700 In-Reply-To: <000000000000881d0606004541d1@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001416bb06004ebf53@google.com> Subject: Re: [syzbot] [fs?] INFO: task hung in pipe_release (4) From: syzbot To: bpf@vger.kernel.org, brauner@kernel.org, davem@davemloft.net, dhowells@redhat.com, dsahern@kernel.org, edumazet@google.com, kuba@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL,SORTED_RECIPS,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net syzbot has bisected this issue to: commit 7ac7c987850c3ec617c778f7bd871804dc1c648d Author: David Howells Date: Mon May 22 12:11:22 2023 +0000 udp: Convert udp_sendpage() to use MSG_SPLICE_PAGES bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15853bcaa80000 start commit: 3f01e9fed845 Merge tag 'linux-watchdog-6.5-rc2' of git://w.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=17853bcaa80000 console output: https://syzkaller.appspot.com/x/log.txt?x=13853bcaa80000 kernel config: https://syzkaller.appspot.com/x/.config?x=150188feee7071a7 dashboard link: https://syzkaller.appspot.com/bug?extid=f527b971b4bdc8e79f9e syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12a86682a80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1520ab6ca80000 Reported-by: syzbot+f527b971b4bdc8e79f9e@syzkaller.appspotmail.com Fixes: 7ac7c987850c ("udp: Convert udp_sendpage() to use MSG_SPLICE_PAGES") For information about bisection process see: https://goo.gl/tpsmEJ#bisection