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=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 05D6CC433E0 for ; Wed, 3 Mar 2021 03:41:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A68AF64E66 for ; Wed, 3 Mar 2021 03:41:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352282AbhCCDcy (ORCPT ); Tue, 2 Mar 2021 22:32:54 -0500 Received: from mail-il1-f200.google.com ([209.85.166.200]:51489 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1838144AbhCBJ37 (ORCPT ); Tue, 2 Mar 2021 04:29:59 -0500 Received: by mail-il1-f200.google.com with SMTP id y11so14103514ilc.18 for ; Tue, 02 Mar 2021 01:29:43 -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=mWrgSF6bXDt8oZKzNoVO6j2ZDCRfyqKvx81/QMegxVY=; b=tJfN/lq16VANOe++2shHHUlre3yYNw0Tz0wdl9+wPuzqaBfYku8OPdOdhoYGC23h5l BC8x3L5CtceLQs5mtzFeIbkbnjze3Wt7891ZjCq3/thYDVm0vNVYvvsj7UTgrS+Lgize XTQOcIIVdZa3/4SK+pt3LZwdspGcQDziHrhl1YF3TtVZmSpCRqgOksPJTR229NVlIQvi g9vMPle1mLjhrbAUEVTFYWGTVqyl62jRRzrs5HenRyhJdF4k+tmDhIuSRRS5QMAA+rfY bdLZOwDcn9X0UUope02sh/ivtjtUFLMvF899ECoOXQADpyZ67f8QkkQCOVc9SYwv1onc mD1Q== X-Gm-Message-State: AOAM532uq8UO4j77uI1W8umMFRhyLMi04NGbnzT6L8eiyg1n2ukxL5yV F1CHVn1S7DxaWlYKcxfgE2OOFYzuoAlpHj4a57G0VzTcVBVM X-Google-Smtp-Source: ABdhPJzYRtugQNJwsfcvLS+hVKsgyEYDJW1KKRISaXRdJRbOrHfk6pYCMLv0Os1pprF2odVOB6j7luJaC0meF1O3pydUvjmKoHoJ MIME-Version: 1.0 X-Received: by 2002:a02:a606:: with SMTP id c6mr10241993jam.108.1614677357837; Tue, 02 Mar 2021 01:29:17 -0800 (PST) Date: Tue, 02 Mar 2021 01:29:17 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000057420705bc8a5eeb@google.com> Subject: KMSAN: uninit-value in ieee802154_hdr_push 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=1756eff2d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=c8e3b38ca92283e dashboard link: https://syzkaller.appspot.com/bug?extid=4f6e279a71100e94ae65 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+4f6e279a71100e94ae65@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in ieee802154_hdr_push_sechdr net/ieee802154/header_ops.c:54 [inline] BUG: KMSAN: uninit-value in ieee802154_hdr_push+0xd68/0xdd0 net/ieee802154/header_ops.c:108 CPU: 1 PID: 15015 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_hdr_push_sechdr net/ieee802154/header_ops.c:54 [inline] ieee802154_hdr_push+0xd68/0xdd0 net/ieee802154/header_ops.c:108 ieee802154_header_create+0xd07/0x1070 net/mac802154/iface.c:404 wpan_dev_hard_header include/net/cfg802154.h:374 [inline] dgram_sendmsg+0xf48/0x15c0 net/ieee802154/socket.c:670 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: 0023:0xf7f65549 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:00000000f555f5fc EFLAGS: 00000296 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000200003c0 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 ----hdr@ieee802154_header_create created at: ieee802154_header_create+0xc9/0x1070 net/mac802154/iface.c:368 ieee802154_header_create+0xc9/0x1070 net/mac802154/iface.c:368 ===================================================== --- 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.