linux-kernel - [PATCH -next v2] arm*/efi: efi

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Date:   Tue, 20 Sep 2016 19:39:53 +0800
From:   Yisheng Xie <xieyisheng1@...wei.com>
To:     <matt@...eblueprint.co.uk>
CC:     <will.deacon@....com>, <mingo@...nel.org>, <guohanjun@...wei.com>,
        <mark.rutland@....com>, <catalin.marinas@....com>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-efi@...r.kernel.org>, <ard.biesheuvel@...aro.org>
Subject: [PATCH -next v2] arm*/efi: efi_init error handling fix

There's an early memmap leak in efi_init error path, fix it.

Signed-off-by: Yisheng Xie <xieyisheng1@...wei.com>
---
 drivers/firmware/efi/arm-init.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/efi/arm-init.c b/drivers/firmware/efi/arm-init.c
index 9f8d996..7c2fe57 100644
--- a/drivers/firmware/efi/arm-init.c
+++ b/drivers/firmware/efi/arm-init.c
@@ -245,8 +245,10 @@ void __init efi_init(void)
 	     "Unexpected EFI_MEMORY_DESCRIPTOR version %ld",
 	      efi.memmap.desc_version);
 
-	if (uefi_init() < 0)
+	if (uefi_init() < 0) {
+		efi_memmap_unmap();
 		return;
+	}
 
 	reserve_regions();
 	efi_memattr_init();
-- 
1.7.12.4