linux-kernel - [PATCH 2/3] efi/esrt: use memunmap rather kfree to free the remapping

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Date:   Wed,  6 Dec 2017 09:50:09 +0000
From:   Ard Biesheuvel <ard.biesheuvel@...aro.org>
To:     linux-efi@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "H . Peter Anvin" <hpa@...or.com>
Cc:     Pan Bian <bianpan2016@....com>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        linux-kernel@...r.kernel.org,
        Matt Fleming <matt@...eblueprint.co.uk>, stable@...r.kernel.org
Subject: [PATCH 2/3] efi/esrt: use memunmap rather kfree to free the remapping

From: Pan Bian <bianpan2016@....com>

The remapping result of memremap should be freed with memunmap, not
kfree.

Signed-off-by: Pan Bian <bianpan2016@....com>
Cc: Matt Fleming <matt@...eblueprint.co.uk>
Cc: <stable@...r.kernel.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@...aro.org>
---
 drivers/firmware/efi/esrt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firmware/efi/esrt.c b/drivers/firmware/efi/esrt.c
index 7aae2483fcb9..c47e0c6ec00f 100644
--- a/drivers/firmware/efi/esrt.c
+++ b/drivers/firmware/efi/esrt.c
@@ -428,7 +428,7 @@ static int __init esrt_sysfs_init(void)
 err_remove_esrt:
 	kobject_put(esrt_kobj);
 err:
-	kfree(esrt);
+	memunmap(esrt);
 	esrt = NULL;
 	return error;
 }
-- 
2.11.0