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From: Dan Carpenter <dan.carpenter@oracle.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Serge Semin <fancer.lancer@gmail.com>
Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] eeprom/idt_89hpesx: freeing devm_ pointer with kfree()
Date: Thu, 26 Jan 2017 12:01:46 +0300	[thread overview]
Message-ID: <20170126090145.GA942@mwanda> (raw)

"pdev->ee_file" was allocated with devm_kmalloc() so freeing it with
kfree() is a double free.  In fact, we don't need to free it at all.

Fixes: cfad6425382e ("eeprom: Add IDT 89HPESx EEPROM/CSR driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/drivers/misc/eeprom/idt_89hpesx.c b/drivers/misc/eeprom/idt_89hpesx.c
index 25d47d09e1cb..f5f2c5a8d9b0 100644
--- a/drivers/misc/eeprom/idt_89hpesx.c
+++ b/drivers/misc/eeprom/idt_89hpesx.c
@@ -1359,7 +1359,6 @@ static int idt_create_sysfs_files(struct idt_89hpesx_dev *pdev)
 	pdev->ee_file->size = pdev->eesize;
 	ret = sysfs_create_bin_file(&dev->kobj, pdev->ee_file);
 	if (ret != 0) {
-		kfree(pdev->ee_file);
 		dev_err(dev, "Failed to create EEPROM sysfs-node");
 		return ret;
 	}
@@ -1381,9 +1380,6 @@ static void idt_remove_sysfs_files(struct idt_89hpesx_dev *pdev)
 
 	/* Remove EEPROM sysfs file */
 	sysfs_remove_bin_file(&dev->kobj, pdev->ee_file);
-
-	/* Free memory allocated for bin_attribute structure */
-	kfree(pdev->ee_file);
 }
 
 /*

WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Serge Semin <fancer.lancer@gmail.com>
Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] eeprom/idt_89hpesx: freeing devm_ pointer with kfree()
Date: Thu, 26 Jan 2017 09:01:46 +0000	[thread overview]
Message-ID: <20170126090145.GA942@mwanda> (raw)

"pdev->ee_file" was allocated with devm_kmalloc() so freeing it with
kfree() is a double free.  In fact, we don't need to free it at all.

Fixes: cfad6425382e ("eeprom: Add IDT 89HPESx EEPROM/CSR driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/drivers/misc/eeprom/idt_89hpesx.c b/drivers/misc/eeprom/idt_89hpesx.c
index 25d47d09e1cb..f5f2c5a8d9b0 100644
--- a/drivers/misc/eeprom/idt_89hpesx.c
+++ b/drivers/misc/eeprom/idt_89hpesx.c
@@ -1359,7 +1359,6 @@ static int idt_create_sysfs_files(struct idt_89hpesx_dev *pdev)
 	pdev->ee_file->size = pdev->eesize;
 	ret = sysfs_create_bin_file(&dev->kobj, pdev->ee_file);
 	if (ret != 0) {
-		kfree(pdev->ee_file);
 		dev_err(dev, "Failed to create EEPROM sysfs-node");
 		return ret;
 	}
@@ -1381,9 +1380,6 @@ static void idt_remove_sysfs_files(struct idt_89hpesx_dev *pdev)
 
 	/* Remove EEPROM sysfs file */
 	sysfs_remove_bin_file(&dev->kobj, pdev->ee_file);
-
-	/* Free memory allocated for bin_attribute structure */
-	kfree(pdev->ee_file);
 }
 
 /*

             reply	other threads:[~2017-01-26  9:02 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-26  9:01 Dan Carpenter [this message]
2017-01-26  9:01 ` [patch] eeprom/idt_89hpesx: freeing devm_ pointer with kfree() Dan Carpenter
2017-01-26 12:44 ` Serge Semin
2017-01-26 12:44   ` Serge Semin

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