From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) (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 ADA261A9FB4 for ; Mon, 6 Oct 2025 04:31:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759725064; cv=none; b=G5YfDSxUx9na8C1mjk6UTLbMcpU9KcufR0zS/lg4uBYAxLlx0/2rnnL0a/cXe1pV9tThEhJt1T3rNrkj5FpPWWkE25aSOSf+tddJcnGSRWTTH8mm5tPaxFD51JLhy0KFjJJF4j32EtTh/HZY5Rb5wbIIdGjOKm+Q+mFSjTzbN6I= 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=209.85.166.69 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-f69.google.com with SMTP id ca18e2360f4ac-92c122eb2bdso372527239f.1 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=hK9Mbbp61AF+1uZzVN50SID4Qu298zG+KgF5NX2904MWcVTNaHkoH6O7yynWlxoQ0k 7OoFJ4l179FUjkUsw1UpxHQfUnkNRssDLiEqXUts0zg9y8likfrgMTu6jB511EHaMzCw rD2OYzE1YPM2w7I6BtskW1nJpPv6ZDBhwHtjf1BKTvDRPbFIsaaj9/UrSXlTIv2qhjfJ /ruonHi/DWOORy7uao/rH2CJydrfDc5tx/aXT3qbrSM1PslsIAa3zAAmfI2Ls/KUcWcI /oDQkZy1M9rI4AjGRJ0Vbq/iI42kR16lLX5rX4LLUb6BWApcPCvtkrgQsih+dpMPKwlN A69w== X-Forwarded-Encrypted: i=1; AJvYcCWacp6D9FXgl+HZABrnuJ6UpfccACDWDBEvzWocYanqidsAsuDfy0uaRmxaQHsU4OtvE6GVRQ1uPBIyKGPm@vger.kernel.org X-Gm-Message-State: AOJu0YwaFqxnJA/0x37BxK3K18cpkY6XcGPKQU42sDBxGPh0GhhQkldL wF1l7yekgRJo2kkRez6iIbEjmtekvEOe4xmnn5fI+au0TrkesbeOH3fNpM17muIbBqNzjkqatwE 3tefqWtzdxCGlSSLBZO5hH/5KBCUlF6ms8GMD6tT8klak9aMPQBNHkmOWKz8= X-Google-Smtp-Source: AGHT+IHwLCNlpvRxDJJexJ8mhE1ZlKnw256X+/lDKuYPrCek1Z8+Yc8wXHgdMmtWPWEKUKQ8yZDEMknakJRpwxf7DcUT9oblcO6+ Precedence: bulk X-Mailing-List: linux-fsdevel@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