[PATCH] [SCSI] megaraid: add error handling for failed kmalloc() in mega_internal_command().

[santosh nayak <santoshprasadnayak@xxxxxxxxx>]

From: Santosh Nayak <santoshprasadnayak@xxxxxxxxx>

Add error handling after kzalloc() call to avoid null dereference.

Signed-off-by: Santosh Nayak <santoshprasadnayak@xxxxxxxxx>
---
 drivers/scsi/megaraid.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index 4d39a9f..41e7b42 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -4438,6 +4438,10 @@ mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
 	memset(scb, 0, sizeof(scb_t));
 
 	sdev = kzalloc(sizeof(struct scsi_device), GFP_KERNEL);
+	if (unlikely(!sdev)) {
+		printk(KERN_ERR "%s: failed to alloc memory\n", __func__);
+		return -ENOMEM;
+	}
 	scmd->device = sdev;
 
 	memset(adapter->int_cdb, 0, sizeof(adapter->int_cdb));
-- 
1.7.4.4

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