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 3695419E82A for ; Tue, 13 May 2025 15:02:03 +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=1747148524; cv=none; b=eoT8osau5e7njtLWisruwsd5SfJBV5wgddML+jsiSQdaU7Of0wXI49DnU0MhBNehuys96wieqG/xsYy7esUYGAfMOS/yx0n8eeP6YcxwqlG8plF5VpaXKlS9+e5tqU3wnKbMBh3ChYMnpvdLUTAjO5oMsl5M4JZORW3KqxaUSH0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747148524; c=relaxed/simple; bh=hP4PegqdC13RnAQ85+yUWVwc7+/McCk2lZDiw5UO/Bg=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=S2bd37ahBObGOBfg8dstoGrttxB2mrZC5bK1Bf7bvMI9jYvA11DThsBwA4drklO1z1+x9sKeeFNUkB7hdQzNmiK9KNd+QrtesQURMEq5otPpRl4liCN86UWriu7UHcQYVJXDIhBUVIIexyoPKWEsKvaOEjP3R/6Uj3VgZ85GilM= 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-85db3356bafso1139272739f.3 for ; Tue, 13 May 2025 08:02:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1747148522; x=1747753322; 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=QRCw3Vnmu98ynSRU7dOHd3K3QYDecyR1q9zxGNfhk6k=; b=P9+npjdRv7omrFgjaSyvpnfZfvtcxrr7n89/cjqrysXiJW2XYw/2GS/T9wszB/UZW7 7zSydDhJqlgeqmelEgE0OPCpDHIQjvPN4YOWR0JPt3+K082at7Rymw8zwY0+xZloQEYK O7IAfMNm0ku3cUSYkuMOVEw/4EvPQdXNVIKcAq6StXTr5bIKDHT7EH6sSbNiJvEw5QS1 3JhAiTIEBNFWcJCFIlnbb6CrtvfXmS6KaZpcNb0ltl2Pg5fyxWo6Sc7K7QCo97DcC0nX iAALD2wRUoLNb7U2aVi9WQmjDHgU6Ofji+ZPwxw3t4Ov8eKKR5VkbmkGdqkZpmUIXddZ USTA== X-Forwarded-Encrypted: i=1; AJvYcCUosODFCyAUnbNAYJ4Q68no7bqLBibpyFetu9sWLZbCvk68zfvMUqdXOVseJ7xb+uIMvbUcDAsb7Zjx2SM=@vger.kernel.org X-Gm-Message-State: AOJu0YyiK8Do4b8+f07A8sOCM+bz2vb1m7RCOwg5y2cVXLf1zPs69+Bd iznvBgMHA/mT05akcgaXaerHHmfz5alqEBENa6goo3iL2Pyxt4z1XY42CyZHMDyQgHR5sFQBeh4 MIowP41w7d/peNaZwtvtSIdu2ehlMY9rxAHzLvJDtXRCp7rB/tuyVR2A= X-Google-Smtp-Source: AGHT+IGMtQ161tXmf2KXLsHZBWzf4It6/o3Ywvnbm9ZKDK/irJkDeLwoCqMl97LC/tlvDAtSX5MOkOfGHaXSl5yf56Ur/aYT6NLX Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a6b:da19:0:b0:867:63db:8e4e with SMTP id ca18e2360f4ac-86763db8f38mr1628657039f.1.1747148521963; Tue, 13 May 2025 08:02:01 -0700 (PDT) Date: Tue, 13 May 2025 08:02:01 -0700 In-Reply-To: <000000000000453f3d05db72fc7e@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68235ee9.050a0220.f2294.09fc.GAE@google.com> Subject: Re: [syzbot] [usb?] [media?] KASAN: use-after-free Read in em28xx_init_extension (2) From: syzbot To: gregkh@linuxfoundation.org, hdanton@sina.com, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-usb@vger.kernel.org, mchehab@kernel.org, paskripkin@gmail.com, stern@rowland.harvard.edu, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit a368ecde8a5055b627749b09c6218ef793043e47 Author: Alan Stern Date: Thu Jun 27 19:56:18 2024 +0000 USB: core: Fix duplicate endpoint bug by clearing reserved bits in the descriptor bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12cf6cd4580000 start commit: cd802e7e5f1e Merge tag 'for-linus' of git://git.kernel.org.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=11cf6cd4580000 console output: https://syzkaller.appspot.com/x/log.txt?x=16cf6cd4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=91c351a0f6229e67 dashboard link: https://syzkaller.appspot.com/bug?extid=99d6c66dbbc484f50e1c syz repro: https://syzkaller.appspot.com/x/repro.syz?x=143a7768580000 Reported-by: syzbot+99d6c66dbbc484f50e1c@syzkaller.appspotmail.com Fixes: a368ecde8a50 ("USB: core: Fix duplicate endpoint bug by clearing reserved bits in the descriptor") For information about bisection process see: https://goo.gl/tpsmEJ#bisection