linux-kernel - [PATCH] ACPI: APEI: Fix num

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Message-ID: <20221004230541.449243-1-Ashish.Kalra@amd.com>
Date:   Tue, 4 Oct 2022 23:05:41 +0000
From:   Ashish Kalra <Ashish.Kalra@....com>
To:     <rafael@...nel.org>, <lenb@...nel.org>, <james.morse@....com>,
        <tony.luck@...el.com>, <bp@...en8.de>, <robert.moore@...el.com>,
        <linux-acpi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devel@...ica.org>
Subject: [PATCH] ACPI: APEI: Fix num_ghes to unsigned int

From: Ashish Kalra <ashish.kalra@....com>

Change num_ghes from int to unsigned int, preventing an overflow
and causing subsequent vmalloc to fail.

Signed-off-by: Ashish Kalra <ashish.kalra@....com>
---
 drivers/acpi/apei/ghes.c | 2 +-
 include/acpi/ghes.h      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index d91ad378c00d..6d7c202142a6 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -163,7 +163,7 @@ static void ghes_unmap(void __iomem *vaddr, enum fixed_addresses fixmap_idx)
 	clear_fixmap(fixmap_idx);
 }
 
-int ghes_estatus_pool_init(int num_ghes)
+int ghes_estatus_pool_init(unsigned int num_ghes)
 {
 	unsigned long addr, len;
 	int rc;
diff --git a/include/acpi/ghes.h b/include/acpi/ghes.h
index 34fb3431a8f3..292a5c40bd0c 100644
--- a/include/acpi/ghes.h
+++ b/include/acpi/ghes.h
@@ -71,7 +71,7 @@ int ghes_register_vendor_record_notifier(struct notifier_block *nb);
 void ghes_unregister_vendor_record_notifier(struct notifier_block *nb);
 #endif
 
-int ghes_estatus_pool_init(int num_ghes);
+int ghes_estatus_pool_init(unsigned int num_ghes);
 
 /* From drivers/edac/ghes_edac.c */
 
-- 
2.25.1