From bfdb2a493884ca720e31bbdd42bae23764bce75c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Duval?= <jerome.duval@gmail.com>
Date: Mon, 27 Jan 2014 19:45:43 +0100
Subject: [PATCH] scsi_periph: check block_size against zero in io().

* should help with #10466
---
 src/add-ons/kernel/generic/scsi_periph/io.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/add-ons/kernel/generic/scsi_periph/io.cpp b/src/add-ons/kernel/generic/scsi_periph/io.cpp
index 5ce77856ea..c6d3f115ab 100644
--- a/src/add-ons/kernel/generic/scsi_periph/io.cpp
+++ b/src/add-ons/kernel/generic/scsi_periph/io.cpp
@@ -367,6 +367,8 @@ periph_io(scsi_periph_device_info *device, io_operation *operation,
 	size_t* _bytesTransferred)
 {
 	const uint32 blockSize = device->block_size;
+	if (blockSize == 0)
+		return B_BAD_VALUE;
 
 	// don't test rw10_enabled restrictions - this flag may get changed
 	scsi_ccb *request = device->scsi->alloc_ccb(device->scsi_device);