diff options
| author | Borislav Petkov <bp@suse.de> | 2015-11-30 13:12:59 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-12-04 12:55:01 +0100 |
| commit | 071ac0c4e8e90d5de05f0779b03ae69ce84820d5 (patch) | |
| tree | ec373fdc402a7b62499211b927f217808e25f771 /arch/x86 | |
| parent | x86/mm/mtrr: Mark the 'range_new' static variable in mtrr_calc_range_state() ... (diff) | |
| download | linux-071ac0c4e8e90d5de05f0779b03ae69ce84820d5.tar.xz linux-071ac0c4e8e90d5de05f0779b03ae69ce84820d5.zip | |
x86/mm/ptdump: Make (debugfs)/kernel_page_tables read-only
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@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1448885579-32506-1-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/mm/debug_pagetables.c | 2 |
1 files changed, 1 insertions, 1 deletions
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; |