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 71E22638 for ; Thu, 17 Aug 2023 04:19:44 +0000 (UTC) Received: from mail-pj1-f69.google.com (mail-pj1-f69.google.com [209.85.216.69]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C2C282D58 for ; Wed, 16 Aug 2023 21:19:42 -0700 (PDT) Received: by mail-pj1-f69.google.com with SMTP id 98e67ed59e1d1-26b30377d94so8633372a91.0 for ; Wed, 16 Aug 2023 21:19:42 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692245982; x=1692850782; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=5174e1lhoEtAOJSx6OzZg8YIf4r3sHHxcBtCy/AqYyo=; b=laL5U1gwykbm6HFMDhSCpiLTYsfXmkeKpl60vHG0pzj/SSx3oksYz6BK5edmaZ9JMH UwznCBPqBn8VTF1EptHVai1ojs8aBZMhuD5x5nBvn9Hmh+uEBQPih7pp4sn8EUQ8BEDw yFR+jgLCgkTxKYIrVivfHl/R10nEGd8QUsYbwQjuHNO7HAbrXQsahCXs0yWftE5D9jZ4 W2//X5lqSp7bGJrS4EU0W+OXRLICarenGGYk9hAKzAXARlBTTjizH1rXQoaaIUvEdHyM 5zxDB8n5kmOmjPcN4cH1r+vutTdVrHDCPx/TNwz39TApT8g2gzwCB0b5GiBETCySkB27 9YHw== X-Gm-Message-State: AOJu0YwESfAdFJHxoB1gm6xDpgEHsQkRsNA+nC2J1zlbDsMTM2F5DgkX oxgf6V7daXBnpyi2MoTEc4SFhDHwtr44sytmZ4IRrLVznCXg X-Google-Smtp-Source: AGHT+IEZTSdaa9kcYRvTXFZpDfiX5p9rZQWqGwpWUOdqE4TBv2CeMoaYVGf46u3LVELNCiS2dd8ME/kduWdrJuI3NqGAvxNOuL9V Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a17:90a:c901:b0:26b:5182:d042 with SMTP id v1-20020a17090ac90100b0026b5182d042mr837650pjt.2.1692245982314; Wed, 16 Aug 2023 21:19:42 -0700 (PDT) Date: Wed, 16 Aug 2023 21:19:42 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000a60932060316b8f1@google.com> Subject: [syzbot] [net?] WARNING in dev_index_reserve From: syzbot To: ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, hawk@kernel.org, john.fastabend@gmail.com, kuba@kernel.org, leonro@nvidia.com, 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=0.9 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 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 956db0a13b47df7f3d6d624394e602e8bf9b057e Author: Jakub Kicinski Date: Mon Aug 14 20:56:25 2023 +0000 net: warn about attempts to register negative ifindex bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17f68f03a80000 start commit: 950fe35831af Merge branch 'ipv6-expired-routes' git tree: net-next final oops: https://syzkaller.appspot.com/x/report.txt?x=140e8f03a80000 console output: https://syzkaller.appspot.com/x/log.txt?x=100e8f03a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=fe63ad15dded26b6 dashboard link: https://syzkaller.appspot.com/bug?extid=5ba06978f34abb058571 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11be0117a80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14950727a80000 Reported-by: syzbot+5ba06978f34abb058571@syzkaller.appspotmail.com Fixes: 956db0a13b47 ("net: warn about attempts to register negative ifindex") For information about bisection process see: https://goo.gl/tpsmEJ#bisection