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 240C219F for ; Wed, 14 Jun 2023 00:43:33 +0000 (UTC) Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 88D3C19A7 for ; Tue, 13 Jun 2023 17:43:31 -0700 (PDT) Received: by mail-io1-f69.google.com with SMTP id ca18e2360f4ac-77b0124d7beso414552239f.2 for ; Tue, 13 Jun 2023 17:43:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686703411; x=1689295411; 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=2l3o9X4DUl6CHYQ2eJ/wgVXYrcJVZyyGP64Bx5hzSFo=; b=bsNq1SwZIcjZYGYgg2x2z7Jpm46qF27DpKXGrBXZkl9vVTGnx+huKAhggH0LR/JBBp Am7PHo6JAxcS1URyFtXjVL+pXrQjA0SW7WdQpKYRi5ZotfXRBG5qU3b2XYlykQzT+/Ig UYZj0lqGNSmKohn9iyYLRtv18tUuOuCH9NGtHlov7bN9MfKN0MdbZpeqAbtdAPrfp5ze ytwOsQ9XtWK1IXgV+MdY7p2OMVllzlJcK0dlqe9v4F3S3Qb0FgOZ80dv2CYp1ivIYg/0 +Q4Cu5nsbeBdKeXLAJfzByF5Avv4RX9ZAIW3yjRRcMnxnqCgpGj2sP3cmQtPJLZ0LmEf Ymyg== X-Gm-Message-State: AC+VfDwI10UScx2piJjDkDZKCurplvL9UHfo1hQ/cqTm/Rh14YqO7A9z dtrofrBoulLMuJisYUIXgCMOFIklIdWGlsNk4kgJtPp5mEbJ X-Google-Smtp-Source: ACHHUZ7pQAFqGo+YXYn4Pp7UOHTIW0tLIJtZrgi4ompHLJQyjZVznMQSZHBldmo6gwCfDTX3d3k+ot9FDhCnEBBrs5htpNrxlKk2 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a5d:8a18:0:b0:774:8f36:bb8e with SMTP id w24-20020a5d8a18000000b007748f36bb8emr5930497iod.2.1686703410910; Tue, 13 Jun 2023 17:43:30 -0700 (PDT) Date: Tue, 13 Jun 2023 17:43:30 -0700 In-Reply-To: <000000000000342a9105fe052726@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000a61ffe05fe0c3d08@google.com> Subject: Re: [syzbot] [net?] WARNING in unreserve_psock From: syzbot To: bpf@vger.kernel.org, davem@davemloft.net, dhowells@redhat.com, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com 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_H2, 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 c31a25e1db486f36a0ffe3c849b0a82cda3db7db Author: David Howells Date: Fri Jun 9 10:02:21 2023 +0000 kcm: Send multiple frags in one sendmsg() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13050c75280000 start commit: c29e012eae29 selftests: forwarding: Fix layer 2 miss test .. git tree: net-next final oops: https://syzkaller.appspot.com/x/report.txt?x=10850c75280000 console output: https://syzkaller.appspot.com/x/log.txt?x=17050c75280000 kernel config: https://syzkaller.appspot.com/x/.config?x=526f919910d4a671 dashboard link: https://syzkaller.appspot.com/bug?extid=dd1339599f1840e4cc65 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=170f2663280000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12f1c5e7280000 Reported-by: syzbot+dd1339599f1840e4cc65@syzkaller.appspotmail.com Fixes: c31a25e1db48 ("kcm: Send multiple frags in one sendmsg()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection