From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f169.google.com (mail-pl1-f169.google.com [209.85.214.169]) (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 B47BD433BB for ; Sat, 14 Sep 2024 20:32:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.169 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726345954; cv=none; b=mCKqzuClsYt6XWQvCQTW/43WXfIv4ELTTBrG85NPZQSrd3kcqH+OUys1VUvoW9QkKf2qfVWOWXtZrSOQrEuYfEVB6k8GNF5BPcsf9JsiZzznsrr5xAEd7MCukle3qGSXCQItfGWUG4UIxYA6ShUx4tmtpXwRorbSbRTy3MayQkA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726345954; c=relaxed/simple; bh=F3IiwGIlOBcsHPpCUg0PYbzsHuC7Wa9ijM+/bgB4CMs=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=ceeLhTnu250eiMaMKqOhaEod8Rc33AW0zdoY9ETx97h5GgaFQ6Fd6M0c31dxACsYW6T2TIVV/bDCoCyGq/jcZgpD1cstXYgdhNL4xZ/qFTvyom12B7G84sLS3MfQ/jOfwUmJHQ1jnDocwvZk3dHLGp49OpUKp5XHrTVe9AFgbug= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=TO6as4Lw; arc=none smtp.client-ip=209.85.214.169 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="TO6as4Lw" Received: by mail-pl1-f169.google.com with SMTP id d9443c01a7336-207397d1000so32626855ad.0 for ; Sat, 14 Sep 2024 13:32:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1726345950; x=1726950750; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=jdKV1HEUhnJOzOUSDTkMKFHQ0OWb2jLH54eu+r9ySoM=; b=TO6as4LwigvR3gEWHOiUxhjh1h9TNw9vxBd4FhfRgqhRHGYdglLLzmg9u58LORcLBV 8w0vxDjeGjrIDshZJcNw8MQWbbPfNMo/uN3vrUoQRs6GpF19QBGoXu7oIao8bHNgz32m Oi9cSqvQRkZVTeQ2Rqtb24IlzqeI3/kx2pPXHVIv0mrkF+FrSHtrefS7CfuTxqdhl/gq pP3wdWnTenpumfnutDxYiYmbIY67q8aoE6q292GMmmMge9wHCYd88YVOBIlc5TFMFMoZ hI2RsokXZUQ/GEIRqs0j/DiWXE6czdn3Itl5pHAfn3UiiozDdRk4w3H4XsKdrIanoCUN FXHA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726345950; x=1726950750; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=jdKV1HEUhnJOzOUSDTkMKFHQ0OWb2jLH54eu+r9ySoM=; b=mHt77El/TISmoNJZl4ltF/yvc3r6JS8UGdyOWpSuxqQV28he4OQ2xfAulo+lCZ0XFO JLgJWECRRRDyXHNBAWspG80ay+Xy+bugrqdjkeOcR/Htsi3OjNxAKgSllQDz0YZ5JINd fYyzpJ8n3bYP4Y2uYPRyhydb5uAK3486oRgqTgFhwdpIwmOf9Rg+NpShHtzXbOiBKCLD +2d3KDkTAwdjQBS6wyVomZyUa1TlUpAEIfoaq6sWIeJp0caej8a4DPTRbsGCX0h9r+kB NRmPQPaM+JHuw141MKv7CNEChiDgl0bjpXMVjk0reM1ndsJdBxdefQVeF0lcwzF6H6En Cfwg== X-Gm-Message-State: AOJu0YwC95Fn3CQVD2qvOKUn9YLzlXgpbommN+1WrN3aFpDgTdYH6r85 OyvsPKTNmPdiCoJlcEVvOH+lm5ybTiuuGW9dDel9YiGIgIWNde70 X-Google-Smtp-Source: AGHT+IE1lA37ZVqupKEOTVaPbMVLYxIHYlm8EZ0ya+mHOr2CVKWmUD7Y+KF+KSASaQCL4BKwjyZQdg== X-Received: by 2002:a17:903:41c9:b0:1fd:6033:f94e with SMTP id d9443c01a7336-2076e61ddabmr184752265ad.27.1726345950277; Sat, 14 Sep 2024 13:32:30 -0700 (PDT) Received: from kernelexploit-virtual-machine.localdomain ([121.185.186.233]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-207945da9f3sm12866805ad.23.2024.09.14.13.32.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 14 Sep 2024 13:32:30 -0700 (PDT) From: Jeongjun Park To: syzbot+b8080cbc8d286a5fa23a@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [usb?] KMSAN: kernel-infoleak in iowarrior_read Date: Sun, 15 Sep 2024 05:32:26 +0900 Message-Id: <20240914203226.99700-1-aha310510@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <0000000000001fdbd80621e28ae3@google.com> References: <0000000000001fdbd80621e28ae3@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit #syz test git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master --- drivers/usb/misc/iowarrior.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c index 6d28467ce352..c36eb831e3db 100644 --- a/drivers/usb/misc/iowarrior.c +++ b/drivers/usb/misc/iowarrior.c @@ -182,12 +182,6 @@ static void iowarrior_callback(struct urb *urb) && (dev->interface->cur_altsetting->desc.bInterfaceNumber == 0)) { /* + 1 for serial number */ offset = aux_idx * (dev->report_size + 1); - if (!memcmp - (dev->read_queue + offset, urb->transfer_buffer, - dev->report_size)) { - /* equal values on interface 0 will be ignored */ - goto exit; - } } /* aux_idx become next intr_idx */ --