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[23.128.96.18]) by mx.google.com with ESMTP id u26si23371870ejz.460.2021.07.20.14.34.50; Tue, 20 Jul 2021 14:35:15 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231414AbhGTUwg (ORCPT + 99 others); Tue, 20 Jul 2021 16:52:36 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:44726 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231157AbhGTUwc (ORCPT ); Tue, 20 Jul 2021 16:52:32 -0400 Received: by mail-io1-f70.google.com with SMTP id k2-20020a5d8b020000b029050b6f9cfe31so38740ion.11 for ; Tue, 20 Jul 2021 14:33:10 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=3twmQjVLKZYLJpKK4SKvwqowp6QBKj+Dr4lo3yFdzNA=; b=csmr4qoT+JsVh4BI3PoFJyUXo3jdD+iOWmWTV0u/gUU8WUld7NMxMLAngL3nwYvX4L wmO6JPkdQuWk1A88KFZq7nWrTp2eERi2+7xepG6kiUMTUzGMM7emJVAuRWOC8XrXP4DI TotB6vY0ykCa4/StYWtQ2mW4m8wD3h0tjF1y3VNlK9SSKIdu98xDN8d0MxpwHL9vBnVo H+iTcaK+E7/zYCHTX3HXqQMwVWAGlrWCuy8tqAhLT/HCrqX7KRkloRk1KkBf4zAwSUau 8RmLJu3Zfg9T1ztr5gHqTemdlVXi7xqdPr4625vU0LnZyVwZSRyjYDSm7rwuufY4rIO1 WyUQ== X-Gm-Message-State: AOAM531KWsOT3Qynye0/A0Hh5DxvYUjL6Hjva1eufm+pqbXLYBY2Brd1 0wNRbSUvOdIrFftgaikYLv682hnAXyv6prHPalkhqKuzn+AO MIME-Version: 1.0 X-Received: by 2002:a92:507:: with SMTP id q7mr17867804ile.81.1626816790235; Tue, 20 Jul 2021 14:33:10 -0700 (PDT) Date: Tue, 20 Jul 2021 14:33:10 -0700 In-Reply-To: <000000000000a0982305c6e5c9f5@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e58f5705c794cc1b@google.com> Subject: Re: [syzbot] KASAN: use-after-free Write in sctp_auth_shkey_hold From: syzbot To: davem@davemloft.net, hdanton@sina.com, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-sctp@vger.kernel.org, lucien.xin@gmail.com, marcelo.leitner@gmail.com, netdev@vger.kernel.org, nhorman@tuxdriver.com, syzkaller-bugs@googlegroups.com, vyasevich@gmail.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit 56dd525abd56f7acd7b44a52935726e3ada4916c Author: Xin Long Date: Mon Aug 19 14:02:49 2019 +0000 sctp: add SCTP_AUTH_SUPPORTED sockopt bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=162bdf22300000 start commit: 6f20c8adb181 net/tcp_fastopen: fix data races around tfo_a.. git tree: net final oops: https://syzkaller.appspot.com/x/report.txt?x=152bdf22300000 console output: https://syzkaller.appspot.com/x/log.txt?x=112bdf22300000 kernel config: https://syzkaller.appspot.com/x/.config?x=6da37c7627210105 dashboard link: https://syzkaller.appspot.com/bug?extid=b774577370208727d12b syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12d37b4a300000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=114bd0ea300000 Reported-by: syzbot+b774577370208727d12b@syzkaller.appspotmail.com Fixes: 56dd525abd56 ("sctp: add SCTP_AUTH_SUPPORTED sockopt") For information about bisection process see: https://goo.gl/tpsmEJ#bisection