From mboxrd@z Thu Jan 1 00:00:00 1970 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 smtp.subspace.kernel.org (Postfix) with ESMTPS id C109A1D61BC for ; Mon, 6 Oct 2025 04:31:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759725064; cv=none; b=fn1hRuAisb5fGALA+g9XXkaE1y0PFrPtjrjpW3Q1eIYFPB/LOET6YYTLkgDoHcu/ynYNMFgPFsUyGC7FXvjaspqdkPA0+moYS7OrzP2ZGPyywE2T+Ph29x6KqyfxrNrzCkJHD6PatXarzXLwaV9byyuR5CyfdLvdhRV0J6oG1c0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759725064; c=relaxed/simple; bh=s+LrhnWS0EhHnKEs6tpduejKoSfYy0HkXTqdykcBHaQ=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=r+fx/uOQk1ahbaw2BOZ9Kzvb2PsSk+DWmrapA/KyoBjNyeIMIGESCB1LwsYhb1ZpLVE2w5ROYLwy1yv92/twSBf1W4obn5fK7Em5CVbp8lch9PkyFrbsnaXrwtRIjpq1l4xDAHHNG9QzpKbt9XnwF9o/pnPz4cSbqs+Dh1meAeU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f72.google.com with SMTP id ca18e2360f4ac-886e347d26bso565482139f.0 for ; Sun, 05 Oct 2025 21:31:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1759725062; x=1760329862; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=qYAPlWh5QqZG7ZzTdDdbGHnHnrg7g0fCemjpqHkKvfE=; b=N7LdYIFLFW0LmAf6pIOm0UvbyB0gnrRLrL/zxl/jam8natGjFKuQQGzxoJlFEqTyJt A/dszgtpilT0VCy3lMx83FQH6o0+ft3dWbZqeKO+qP8s5NX78X1Q69OtqLd2OaGAu8EE dw5Av3tKSR6DQ1VAr7Z5Rtp09chwqbg7Uag+XgEeNfDpLEJR6CWzI3cnd/KBEAcL5jfB rfRz5Rd1XC96CBBnnAQHvuMHXWNWVaf1RqUGFqSueDJRYETx71V1fqwRlwx3dDldOoO2 JlB2k7h94+EXGNnFmVK7Z+hrA0tnzLN3YXYO4sTME7fbKFTbLNMUdYgjpUAi+bjVHOOM uT2w== X-Forwarded-Encrypted: i=1; AJvYcCUmkYX6rl8sOiuwBtzfj+YPZmhwNjMRo3m/KYbsMOeF/FVieG0/8CVI55j+Hu0C3X8MZ6K1CIBsNXomOac=@vger.kernel.org X-Gm-Message-State: AOJu0Yxy8NlkaAT2ACufG7Hq2E7oWMQwRvVxme4NF2Rpki2XyM+XOHkb O58BZNxtlTtzrLM1RWCLUbQO/2x/W1CJ7m5TLHUK2ZvkfOsUcgz03A022H7Ks06jD3up8LonKWi ZZKBTkhtGz8sQmKL5d5IuChuQDbiCn2eiVty08VXFHLEwSfN2H4xOt6js6RA= X-Google-Smtp-Source: AGHT+IHwLCNlpvRxDJJexJ8mhE1ZlKnw256X+/lDKuYPrCek1Z8+Yc8wXHgdMmtWPWEKUKQ8yZDEMknakJRpwxf7DcUT9oblcO6+ Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:26d3:b0:93b:a3c3:1b09 with SMTP id ca18e2360f4ac-93bac7ec583mr937979839f.6.1759725061890; Sun, 05 Oct 2025 21:31:01 -0700 (PDT) Date: Sun, 05 Oct 2025 21:31:01 -0700 In-Reply-To: <68e2ff90.050a0220.2c17c1.0039.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68e34605.a00a0220.2ba410.0021.GAE@google.com> Subject: Re: [syzbot] [exfat?] KASAN: stack-out-of-bounds Read in exfat_nls_to_utf16 From: syzbot To: aha310510@gmail.com, ethan.ferguson@zetier.com, linkinjeon@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, sj1557.seo@samsung.com, syzkaller-bugs@googlegroups.com, yuezhang.mo@sony.com Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit d01579d590f72d2d91405b708e96f6169f24775a Author: Ethan Ferguson Date: Tue Sep 30 04:49:00 2025 +0000 exfat: Add support for FS_IOC_{GET,SET}FSLABEL bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12933334580000 start commit: 6093a688a07d Merge tag 'char-misc-6.18-rc1' of git://git.k.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=11933334580000 console output: https://syzkaller.appspot.com/x/log.txt?x=16933334580000 kernel config: https://syzkaller.appspot.com/x/.config?x=e2b03b8b7809165e dashboard link: https://syzkaller.appspot.com/bug?extid=98cc76a76de46b3714d4 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=161a3334580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13827942580000 Reported-by: syzbot+98cc76a76de46b3714d4@syzkaller.appspotmail.com Fixes: d01579d590f7 ("exfat: Add support for FS_IOC_{GET,SET}FSLABEL") For information about bisection process see: https://goo.gl/tpsmEJ#bisection