From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qv1-f46.google.com (mail-qv1-f46.google.com [209.85.219.46]) (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 2D0E32356D2 for ; Wed, 9 Jul 2025 17:53:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.46 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752083584; cv=none; b=lr/3wCoXzHBOC5zeyGhY9VO/LZ7sk7WutTYBLhIfRP9JAiPa+fmMhfoWuwu2q3JwSoYkHk3nQckpI+GB+Tk7k3lJswS3Br293S7pdnuHLQgukSCggvk9TzlFoNuKWtHHocwtyTF6tWu9DsoI5szNnavV9/cBI5eG/HRxigmQMbI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752083584; c=relaxed/simple; bh=5Ia0HRV7zH2WBWN+qpcO4e/eQosXMi2uWlBScRIgOoA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ne8fzBK9bmkOXq2RHtzdwUSjhahIWoqQKv31x2mnFv6Dcw4wHDCgUVd2UIFJjxXR/AnNl+cY85uqzpjGT7IqINC0wy0dKM38QS+qoBmiWBEJYwsodopAD0sydjaoeIJ/J4+Vc0mFHah09lNU7LupTXJ1Nse458kcxtbI7nwvjEg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=rowland.harvard.edu; spf=fail smtp.mailfrom=g.harvard.edu; dkim=pass (2048-bit key) header.d=rowland.harvard.edu header.i=@rowland.harvard.edu header.b=GeIHh7Uo; arc=none smtp.client-ip=209.85.219.46 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=rowland.harvard.edu Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=g.harvard.edu Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=rowland.harvard.edu header.i=@rowland.harvard.edu header.b="GeIHh7Uo" Received: by mail-qv1-f46.google.com with SMTP id 6a1803df08f44-6fb0eb0f0fbso2653206d6.1 for ; Wed, 09 Jul 2025 10:53:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rowland.harvard.edu; s=google; t=1752083582; x=1752688382; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=6kcOerGxtDRl0IqsXa2Fyv0O/gmOLQbQigHP1EIwUd0=; b=GeIHh7UodvyMCRJ8oB0ar8ilUn/fFCiaTul5j9IwXGry1mmBfZFTuRV9qafsayDVpn YSF2TLFYLj4yDDN/VvtbF9E+dffRjovmPzWmQZn0CtuINVtzkriImFEKt2mbP7XNFW0b 3vwq+2FW9y6pc2Lel0widrJ7t2rIyuR9ZOx1VG3DtkwHpVyc0hL7BuIdAZlslvF+awB5 9JjQNLbDQmTX9iv5XgBUZOJ3igobGqbe3Nivs37hq3UpjOPzoNu4ifB707Zo/2X2TO6l D4x5K1osPBRCfjca6JxOu5O5somCV208lCmsgTakQBs8Jj4b9+16h3h/m6cQTn4LEwCT Yo3g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752083582; x=1752688382; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=6kcOerGxtDRl0IqsXa2Fyv0O/gmOLQbQigHP1EIwUd0=; b=pj4E/i4WY1cWPElU9E6IM8dI+NnsoBCgG/9ocvxfvjMFnuJJUZgz1hI2D+Gz+oXz+J sB+RGDKbpMUArvH6t80FMoq2nSr+VIY36xTSHDZcL24a3WoJZbPaREYhXBhNs6Ub+KUz xhxyEZieI02BzOpap+M48x7OHAa81XXYpsvUcboJrp3LDOisq34flEw/9iFVy2KItln9 jYtjOPl2oFCgPnvMT1jGnb9WVpXeKijd8wJD0+19TUv/9/0sVbfk8K9mJriC/qctcdJo mToXsbVGK+xgCjXfkTqGvSV49MBiyEnd2fkxB0A+7QtyOnM+hwoIRIic90MsEFWM3k+w 4SLg== X-Forwarded-Encrypted: i=1; AJvYcCVMqq5l0Pb3GE6r6xLE1G0xUfz9JdWjTK1enWCeIdvXUGEaHX9G4Z2LbJKuz+U/oGJYhVhau3Sc9v8RW5U=@vger.kernel.org X-Gm-Message-State: AOJu0YzSZLN81qBaAOHd3qU+QFV/a+xTpSB405b6+gJJ5UOZmRJqezJ9 wXmZAgllUOspPGe9krg/sPv2iud+ChockU0Z++TxdtuaJOaOczJfRGFG5Sv5hcrkew== X-Gm-Gg: ASbGncuwwNM0FJOUQ8wYK6tgLKD982X2NlVE9qUROdt9ubZgB9Ciory0I/r8lVil1Fb OmYrplqnjOXgRgVfuycWuA4pIBnT2sGZBiipwO5NCLUJ3sJMPPA2kqcTqQmwYACubreXmVkwGcq f3UoEiwuSnlYi23PM+p6Vcfq6u5v2s60C9sj4KSzfC5QKYiOp6us5/k5xh9Qdg2RW3GMDXcUUPS ftqfbbY5JHtXe5mWtux9dSLEyBGZEOxrdlX9krgH98nq2jxdW/ckv2GnaWazYw90ztLdytDw/b9 3pAsbZi+QEVYN5o2/3E08D3ih6/bxZr5cUGRgizwT1nzpFAKNEOiPAPlFrfAzhxI3MKUKys2mlW BaPJ7mxN8tZ1FQTgqKyLGFjbnpCaodVDsrmbu08Se3KSclP1XD81bO94= X-Google-Smtp-Source: AGHT+IHR6B3aBT6nP0giOBXXSp3GYX42d9A0RoMZKZC2VFmh9qTAyRprUaeevr7Q5whyisQ/mru2/w== X-Received: by 2002:a05:6214:5882:b0:702:bc5d:475b with SMTP id 6a1803df08f44-70495a2ac6amr5938216d6.1.1752083581895; Wed, 09 Jul 2025 10:53:01 -0700 (PDT) Received: from rowland.harvard.edu (nat-65-112-8-52.harvard-secure.wrls.harvard.edu. [65.112.8.52]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-702c4d64feasm95362966d6.121.2025.07.09.10.53.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Jul 2025 10:53:01 -0700 (PDT) Date: Wed, 9 Jul 2025 13:52:58 -0400 From: Alan Stern To: syzbot Cc: Benjamin Tissoires , Jiri Kosina , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [usb?] KASAN: slab-out-of-bounds Read in mon_copy_to_buff Message-ID: <681c4eac-e812-4022-96e8-cd6cada73910@rowland.harvard.edu> References: <5de04492-01d3-4b2c-b3f4-8c2237dfed6a@rowland.harvard.edu> <686c14c0.a00a0220.6237c.0000.GAE@google.com> <72fea4f2-40d7-4f9f-a08d-b1ada781256e@rowland.harvard.edu> <5644bdbc-8449-407c-8e0c-e725e10a40f1@rowland.harvard.edu> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5644bdbc-8449-407c-8e0c-e725e10a40f1@rowland.harvard.edu> Test patch to see the contents of the report descriptor. Alan Stern #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ d7b8f8e20813 Index: usb-devel/drivers/hid/usbhid/hid-core.c =================================================================== --- usb-devel.orig/drivers/hid/usbhid/hid-core.c +++ usb-devel/drivers/hid/usbhid/hid-core.c @@ -1043,6 +1043,10 @@ static int usbhid_parse(struct hid_devic goto err; } + dev_info(&intf->dev, "Report descriptor:\n"); + print_hex_dump(KERN_INFO, " * ", DUMP_PREFIX_NONE, 16, 1, + rdesc, rsize, false); + ret = hid_parse_report(hid, rdesc, rsize); kfree(rdesc); if (ret) {