linux-kernel - [PATCH v2] scsi: aic94xx: Add a missing call to kfree

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Message-Id: <20161125122351.8226-1-lambert.quentin@gmail.com>
Date:   Fri, 25 Nov 2016 13:23:51 +0100
From:   Quentin Lambert <lambert.quentin@...il.com>
To:     "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org, thenzl@...hat.com
Cc:     Quentin Lambert <lambert.quentin@...il.com>
Subject: [PATCH v2] scsi: aic94xx: Add a missing call to kfree

Most error branches following the call to kzalloc contain
a call to kfree. This patch add these calls where they are
missing and set the relevant pointers to NULL.

This issue was found with Hector.

Signed-off-by: Quentin Lambert <lambert.quentin@...il.com>

---
 v2: set the point to NULL after having freed it
 drivers/scsi/aic94xx/aic94xx_hwi.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/scsi/aic94xx/aic94xx_hwi.c
+++ b/drivers/scsi/aic94xx/aic94xx_hwi.c
@@ -228,8 +228,11 @@ static int asd_init_scbs(struct asd_ha_s
 	bitmap_bytes = (asd_ha->seq.tc_index_bitmap_bits+7)/8;
 	bitmap_bytes = BITS_TO_LONGS(bitmap_bytes*8)*sizeof(unsigned long);
 	asd_ha->seq.tc_index_bitmap = kzalloc(bitmap_bytes, GFP_KERNEL);
-	if (!asd_ha->seq.tc_index_bitmap)
+	if (!asd_ha->seq.tc_index_bitmap) {
+		kfree(asd_ha->seq.tc_index_array);
+		asd_ha->seq.tc_index_array = NULL;
 		return -ENOMEM;
+	}
 
 	spin_lock_init(&seq->tc_index_lock);