* [PATCH] kmemleak: change /sys/kernel/debug/kmemleak permissions from 0444 to 0644
@ 2017-10-06 11:39 Konstantin Khlebnikov
2017-10-06 13:55 ` Catalin Marinas
0 siblings, 1 reply; 2+ messages in thread
From: Konstantin Khlebnikov @ 2017-10-06 11:39 UTC (permalink / raw)
To: linux-mm, Andrew Morton, linux-kernel, Catalin Marinas
Kmemleak could be tweaked in runtime by writing commands into debugfs file.
Root anyway can use it, but without write-bit this interface isn't obvious.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
---
mm/kmemleak.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index 7780cd83a495..fca3452e56c1 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -2104,7 +2104,7 @@ static int __init kmemleak_late_init(void)
return -ENOMEM;
}
- dentry = debugfs_create_file("kmemleak", S_IRUGO, NULL, NULL,
+ dentry = debugfs_create_file("kmemleak", 0644, NULL, NULL,
&kmemleak_fops);
if (!dentry)
pr_warn("Failed to create the debugfs kmemleak file\n");
--
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^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH] kmemleak: change /sys/kernel/debug/kmemleak permissions from 0444 to 0644
2017-10-06 11:39 [PATCH] kmemleak: change /sys/kernel/debug/kmemleak permissions from 0444 to 0644 Konstantin Khlebnikov
@ 2017-10-06 13:55 ` Catalin Marinas
0 siblings, 0 replies; 2+ messages in thread
From: Catalin Marinas @ 2017-10-06 13:55 UTC (permalink / raw)
To: Konstantin Khlebnikov; +Cc: linux-mm, Andrew Morton, linux-kernel
On Fri, Oct 06, 2017 at 02:39:25PM +0300, Konstantin Khlebnikov wrote:
> Kmemleak could be tweaked in runtime by writing commands into debugfs file.
> Root anyway can use it, but without write-bit this interface isn't obvious.
>
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
> ---
> mm/kmemleak.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/kmemleak.c b/mm/kmemleak.c
> index 7780cd83a495..fca3452e56c1 100644
> --- a/mm/kmemleak.c
> +++ b/mm/kmemleak.c
> @@ -2104,7 +2104,7 @@ static int __init kmemleak_late_init(void)
> return -ENOMEM;
> }
>
> - dentry = debugfs_create_file("kmemleak", S_IRUGO, NULL, NULL,
> + dentry = debugfs_create_file("kmemleak", 0644, NULL, NULL,
> &kmemleak_fops);
> if (!dentry)
> pr_warn("Failed to create the debugfs kmemleak file\n");
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
--
Catalin
--
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^ permalink raw reply [flat|nested] 2+ messages in thread
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2017-10-06 11:39 [PATCH] kmemleak: change /sys/kernel/debug/kmemleak permissions from 0444 to 0644 Konstantin Khlebnikov
2017-10-06 13:55 ` Catalin Marinas
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