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,DKIM_SIGNED, DKIM_VALID,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 3972EC433DB for ; Mon, 18 Jan 2021 08:04:36 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 832EA223E8 for ; Mon, 18 Jan 2021 08:04:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 832EA223E8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 19D3817E3; Mon, 18 Jan 2021 09:03:44 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 19D3817E3 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1610957074; bh=frkx990uiPqLk3CW/JmtkCy//HVLlEh4b0LtVFu+k8s=; h=Date:Subject:From:To:List-Id:List-Unsubscribe:List-Archive: List-Post:List-Help:List-Subscribe:From; b=Vt5U/6O8sSB0Bz+MBJNe6nOn5XIC6Ml42sZ9s2G6OpIxDvLIfRHoSZJSrNnWTLSP0 qqCIZA4EFt7BVXUCicJxzUbM/X5XVKeH9SN1iEMKVpkArRxqQbbfyq9X1kyXxrfMvu E1ZfjKd+A0h8//oLjsYpt3GT4NydVIECV4OdAaE4= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 8FF86F8019D; Mon, 18 Jan 2021 09:02:53 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 5F2B8F801ED; Fri, 15 Jan 2021 09:48:05 +0100 (CET) Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 57705F80132 for ; Fri, 15 Jan 2021 09:47:27 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 57705F80132 Received: by mail-io1-f72.google.com with SMTP id m3so13052980ioy.0 for ; Fri, 15 Jan 2021 00:47:27 -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=3ckr1Mfn/YY+HNQ+AHLOJlRAcQoosqzSNDPBWIcaTtY=; b=ttB5ke4tQbFEfz3UsNzozp+AHnu/P7ut7Wn3VPj5hJac2PS/MsiDYsVho7YpDThnX7 CwdSIxLM3+YqCWPztGJBrzjEbvInFBBnWmXCdwGtjJIDHq1VYwfWQaWWsi255TMOMxK4 mReIKFlHwYyfGBBaIdXYAlmdfx8cXPN2lskhWrEHkCvoOqdEgGPupIHILqd+RAp20DV5 5EqXSwfraBJGMYUpozD9/9sNjopjELQVIlSgjixFvRMdZ7LYRMbZ8qYIYUJ9TIgTg9T4 5FGz2QxARi1913+4zqVJKEKyQwLAalwH1siJ44KkJ2LpoYdHC3d1Hzmw2fig8/RFCSuc ui/A== X-Gm-Message-State: AOAM532zOTkv1EALc9dCGbDj52nzb3QDUM0EvfykiWEcZDyY7s1me9Pn xTTXc6awoxg4d8ZJGFNtPxTvGSH156tkgxfi2yLXz1SQiuFm X-Google-Smtp-Source: ABdhPJzptic/hQVbC4RZn0b9E2+GUjLcLL/KforQ9fhnZiLUTe4Efxou5W3MviG+iKNFS8sgoZyos4sskWf5MPAbMMw7EJvRxuGo MIME-Version: 1.0 X-Received: by 2002:a6b:5018:: with SMTP id e24mr7746963iob.184.1610700445592; Fri, 15 Jan 2021 00:47:25 -0800 (PST) Date: Fri, 15 Jan 2021 00:47:25 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e635df05b8ec6b6e@google.com> Subject: KMSAN: uninit-value in snd_seq_oss_synth_make_info (2) From: syzbot To: alsa-devel@alsa-project.org, glider@google.com, linux-kernel@vger.kernel.org, perex@perex.cz, syzkaller-bugs@googlegroups.com, tiwai@suse.com Content-Type: text/plain; charset="UTF-8" X-Mailman-Approved-At: Mon, 18 Jan 2021 09:02:51 +0100 X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" Hello, syzbot found the following issue on: HEAD commit: 73d62e81 kmsan: random: prevent boot-time reports in _mix_.. git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=10284200d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=2cdf4151c9653e32 dashboard link: https://syzkaller.appspot.com/bug?extid=e42504ff21cff05a595f compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project.git ca2dcbd030eadbf0aa9b660efe864ff08af6e18b) 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+e42504ff21cff05a595f@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in strlen lib/string.c:576 [inline] BUG: KMSAN: uninit-value in strlcpy+0x8c/0x1c0 lib/string.c:143 CPU: 1 PID: 10203 Comm: syz-executor.3 Not tainted 5.10.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 strlen lib/string.c:576 [inline] strlcpy+0x8c/0x1c0 lib/string.c:143 snd_seq_oss_synth_make_info+0x381/0x820 sound/core/seq/oss/seq_oss_synth.c:619 snd_seq_oss_synth_info_user sound/core/seq/oss/seq_oss_ioctl.c:24 [inline] snd_seq_oss_ioctl+0x12b4/0x2530 sound/core/seq/oss/seq_oss_ioctl.c:139 odev_ioctl sound/core/seq/oss/seq_oss.c:180 [inline] odev_ioctl_compat+0x247/0x290 sound/core/seq/oss/seq_oss.c:190 __do_compat_sys_ioctl fs/ioctl.c:842 [inline] __se_compat_sys_ioctl+0x53d/0x1100 fs/ioctl.c:793 __ia32_compat_sys_ioctl+0x4a/0x70 fs/ioctl.c:793 do_syscall_32_irqs_on arch/x86/entry/common.c:80 [inline] __do_fast_syscall_32+0x102/0x160 arch/x86/entry/common.c:139 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:162 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:205 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f8c549 Code: 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 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f55860cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00000000c08c5114 RDX: 0000000020000080 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Local variable ----minf@snd_seq_oss_synth_make_info created at: snd_seq_oss_synth_make_info+0x22a/0x820 sound/core/seq/oss/seq_oss_synth.c:613 snd_seq_oss_synth_make_info+0x22a/0x820 sound/core/seq/oss/seq_oss_synth.c:613 ===================================================== --- 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.