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Message-Id: <1448885579-32506-1-git-send-email-bp@alien8.de>
Date: Mon, 30 Nov 2015 13:12:59 +0100
From: Borislav Petkov <bp@...en8.de>
To: X86 ML <x86@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
Arjan van de Ven <arjan@...ux.intel.com>
Subject: [PATCH] x86/mm/ptdump: Make (debugfs)/kernel_page_tables read-only
From: Borislav Petkov <bp@...e.de>
File should be created with S_IRUSR and not with S_IWUSR too because
writing to it doesn't make any sense. I mean, we don't have a ->write
method anyway but let's have the permissions correct too.
Signed-off-by: Borislav Petkov <bp@...e.de>
Cc: Arjan van de Ven <arjan@...ux.intel.com>
---
arch/x86/mm/debug_pagetables.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/mm/debug_pagetables.c b/arch/x86/mm/debug_pagetables.c
index b35ee86a9316..bfcffdf6c577 100644
--- a/arch/x86/mm/debug_pagetables.c
+++ b/arch/x86/mm/debug_pagetables.c
@@ -26,7 +26,7 @@ static struct dentry *pe;
static int __init pt_dump_debug_init(void)
{
- pe = debugfs_create_file("kernel_page_tables", 0600, NULL, NULL,
+ pe = debugfs_create_file("kernel_page_tables", S_IRUSR, NULL, NULL,
&ptdump_fops);
if (!pe)
return -ENOMEM;
--
2.3.5
--
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