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 autolearn=ham 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 AB339C433DB for ; Mon, 1 Mar 2021 11:50:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7C26864E38 for ; Mon, 1 Mar 2021 11:50:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234139AbhCALuB (ORCPT ); Mon, 1 Mar 2021 06:50:01 -0500 Received: from mail-io1-f71.google.com ([209.85.166.71]:51387 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234178AbhCALty (ORCPT ); Mon, 1 Mar 2021 06:49:54 -0500 Received: by mail-io1-f71.google.com with SMTP id i19so5154261ioh.18 for ; Mon, 01 Mar 2021 03:49:39 -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=DwARR0f16pytt1tCFzY3s3chbtjz6oz+ioNdZQ7XKbE=; b=t/5aCIvvfnBzax8vMy8dsWskLlPvhx6dxaH9PdADkoBz+k4SmZIhyU7+0Yn2rG30Pn 9IM8T4wvFXPPqm21/uSQo4gg++q7x2qrp/l0H+LiV84zhuWd+NfmBXGEp7Kz4kqgM+pb OyGq8tXNPmPDrpUjWFl23/2VQKD3SurCKY5XUbBwjEhMkDFSjzv5d9X9ORgqvuvIl5Zj YpxlO5Xa00Ix+sbjV3ZUKjHFMbxDFq9pnmzqvsQ4hX+gDvve8HChbyVDtccn03HSCTzx OzRqDuxzycYYrmCN1STxYsGqoyoMUNL7g2/ZbeyHx9yTpOhhqfG9LnH/zQt5ttWAIPSV 4avQ== X-Gm-Message-State: AOAM531D2MXF49SKQA3MzGwKtPwD2tJ2kYJZqWSJ75ReMADx97VGkpUn CHaSXDx9lgSUWTe0/Uiw6oIEPptwu9of7Iqtq9uXFhEjmK3r X-Google-Smtp-Source: ABdhPJxhD0zPY5Uhs0jKXVz/djbISrGEHK64CWufRALhFr638FsvoBeCA3iDrAmzXrTKoANokDPVKYR/wFXDWPFV2Ltp5x5IG7JS MIME-Version: 1.0 X-Received: by 2002:a92:6a0b:: with SMTP id f11mr12229147ilc.290.1614599353665; Mon, 01 Mar 2021 03:49:13 -0800 (PST) Date: Mon, 01 Mar 2021 03:49:13 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ee0e3005bc783400@google.com> Subject: KMSAN: uninit-value in dgram_sendmsg From: syzbot To: alex.aring@gmail.com, davem@davemloft.net, glider@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wpan@vger.kernel.org, netdev@vger.kernel.org, stefan@datenfreihafen.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-wpan@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 29ad81a1 arch/x86: add missing include to sparsemem.h git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=13b86466d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=c8e3b38ca92283e dashboard link: https://syzkaller.appspot.com/bug?extid=a209a964d48b219587cc compiler: Debian clang version 11.0.1-2 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+a209a964d48b219587cc@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in ieee802154_addr_from_sa include/net/ieee802154_netdev.h:174 [inline] BUG: KMSAN: uninit-value in dgram_sendmsg+0x14cb/0x15c0 net/ieee802154/socket.c:660 CPU: 0 PID: 14314 Comm: syz-executor.3 Not tainted 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 ieee802154_addr_from_sa include/net/ieee802154_netdev.h:174 [inline] dgram_sendmsg+0x14cb/0x15c0 net/ieee802154/socket.c:660 ieee802154_sock_sendmsg+0xec/0x130 net/ieee802154/socket.c:97 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg net/socket.c:672 [inline] ____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2345 ___sys_sendmsg net/socket.c:2399 [inline] __sys_sendmsg+0x714/0x830 net/socket.c:2432 __compat_sys_sendmsg net/compat.c:347 [inline] __do_compat_sys_sendmsg net/compat.c:354 [inline] __se_compat_sys_sendmsg+0xa7/0xc0 net/compat.c:351 __ia32_compat_sys_sendmsg+0x4a/0x70 net/compat.c:351 do_syscall_32_irqs_on arch/x86/entry/common.c:79 [inline] __do_fast_syscall_32+0x102/0x160 arch/x86/entry/common.c:141 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7fcc549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f55c65fc EFLAGS: 00000296 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000380 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Local variable ----address.i@__sys_sendmsg created at: ___sys_sendmsg net/socket.c:2389 [inline] __sys_sendmsg+0x30e/0x830 net/socket.c:2432 ___sys_sendmsg net/socket.c:2389 [inline] __sys_sendmsg+0x30e/0x830 net/socket.c:2432 ===================================================== --- 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.