From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B366EC4742C for ; Fri, 13 Nov 2020 07:21:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7B40320825 for ; Fri, 13 Nov 2020 07:21:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726394AbgKMHVn (ORCPT ); Fri, 13 Nov 2020 02:21:43 -0500 Received: from mail-il1-f197.google.com ([209.85.166.197]:47335 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726112AbgKMHVn (ORCPT ); Fri, 13 Nov 2020 02:21:43 -0500 Received: by mail-il1-f197.google.com with SMTP id u16so5879676ilq.14 for ; Thu, 12 Nov 2020 23:21:26 -0800 (PST) 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:message-id:subject:from:to; bh=gVVMdz3oRX87N13pmpdCesTAp3yBHf4CwILFJimeEYc=; b=uZygHqPDNz2VYn4MFY/NjaqnDdPshFpSRRvoZ31H2amtuHxWRzpttniC0eMpUY78eY eHk5vd560/xwxwlFis0dtUU1FHhAhprL2xu/ixkUXsc+L+3YNKnlMM2k6QRugKEgsjyE qgmkOaFirmjSPySg6NAH0xcGii5pg/3GVWoil1hd56cvXWQ+cJZA5BiW4YA4f6C+TgYJ 6ENHbFsL9aAfErqWvZ/Sr2BKjYU9OGUslScFeoQzuCHF7sRAATsNZsxdZ8SaEFu2LhaD zr64oXF/ppZdhfF7eazoBiFLkhRa4r2x0K7O9BiGv4SA5J+oIvFQw75BgMVuN60h96/7 34cw== X-Gm-Message-State: AOAM532ncXeFeHYHZ1NpiXORw+j+W5DWn281Lm7B1itXBXXi+N/Mo/qd xRBC93CpMriyygqLFXuJvEIm1ex2HwpkSYaJlrUw87VcSAAd X-Google-Smtp-Source: ABdhPJxgwUKqCrbFTiHbsTHi0QhBas4uFAyNRLPjuGp1oQ6hauIbTtMZWWFCPYVKk7mwG17R4/NRZ2XGz2JVOlmANsNkDqsQukdg MIME-Version: 1.0 X-Received: by 2002:a05:6602:235b:: with SMTP id r27mr908738iot.123.1605252086524; Thu, 12 Nov 2020 23:21:26 -0800 (PST) Date: Thu, 12 Nov 2020 23:21:26 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000647eff05b3f7e0d4@google.com> Subject: general protection fault in tomoyo_socket_sendmsg_permission From: syzbot To: jmorris@namei.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, penguin-kernel@I-love.SAKURA.ne.jp, serge@hallyn.com, syzkaller-bugs@googlegroups.com, takedakn@nttdata.co.jp Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 9dbc1c03 Merge tag 'xfs-5.10-fixes-3' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10453034500000 kernel config: https://syzkaller.appspot.com/x/.config?x=1735b7978b1c3721 dashboard link: https://syzkaller.appspot.com/bug?extid=95ce4b142579611ef0a9 compiler: gcc (GCC) 10.1.0-syz 20200507 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+95ce4b142579611ef0a9@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] CPU: 0 PID: 23364 Comm: vhci_tx Not tainted 5.10.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:tomoyo_socket_sendmsg_permission+0x80/0x340 security/tomoyo/network.c:762 Code: c7 40 0c f3 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 84 24 a0 00 00 00 31 c0 e8 0b 70 f1 fd 48 8d 7d 18 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 7d 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c RSP: 0018:ffffc90016f77ad0 EFLAGS: 00010206 RAX: 0000000000000003 RBX: 1ffff92002deef5b RCX: ffffffff83b3789e RDX: ffff8880186c8000 RSI: ffffffff837e9945 RDI: 0000000000000018 RBP: 0000000000000000 R08: 0000000000000030 R09: ffffc90016f77d97 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffc90016f77ce8 R14: ffffc90016f77ce8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562623b70868 CR3: 000000002af19000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: security_socket_sendmsg+0x50/0xb0 security/security.c:2140 sock_sendmsg+0x3f/0x120 net/socket.c:668 vhci_send_cmd_submit+0x897/0xf90 drivers/usb/usbip/vhci_tx.c:139 vhci_tx_loop+0xfc/0x370 drivers/usb/usbip/vhci_tx.c:241 kthread+0x3af/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Modules linked in: ---[ end trace 535369ec3e6ef304 ]--- RIP: 0010:tomoyo_socket_sendmsg_permission+0x80/0x340 security/tomoyo/network.c:762 Code: c7 40 0c f3 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 84 24 a0 00 00 00 31 c0 e8 0b 70 f1 fd 48 8d 7d 18 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 7d 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c RSP: 0018:ffffc90016f77ad0 EFLAGS: 00010206 RAX: 0000000000000003 RBX: 1ffff92002deef5b RCX: ffffffff83b3789e RDX: ffff8880186c8000 RSI: ffffffff837e9945 RDI: 0000000000000018 RBP: 0000000000000000 R08: 0000000000000030 R09: ffffc90016f77d97 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffc90016f77ce8 R14: ffffc90016f77ce8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0c3a930740 CR3: 000000002af19000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.