Re: [PATCH 1/3] m68k: Return directly after a failed capable() in sys_cacheflush()

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Hi Markus,

On Wed, Jan 18, 2017 at 5:47 PM, SF Markus Elfring
<elfring@xxxxxxxxxxxxxxxxxxxxx> wrote:
From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
Date: Wed, 18 Jan 2017 16:30:36 +0100

Return directly after a call of the function "capable" failed
at the beginning.

Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
---
 arch/m68k/kernel/sys_m68k.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/m68k/kernel/sys_m68k.c b/arch/m68k/kernel/sys_m68k.c
index 9aa01adb407f..62bfeb3716a7 100644
--- a/arch/m68k/kernel/sys_m68k.c
+++ b/arch/m68k/kernel/sys_m68k.c
@@ -384,9 +384,8 @@ sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)

        if (scope == FLUSH_SCOPE_ALL) {
                /* Only the superuser may explicitly flush the whole cache. */
-               ret = -EPERM;
                if (!capable(CAP_SYS_ADMIN))
-                       goto out;
+                       return -EPERM;

Given there is another "goto out" before this, I won't take this patch as-is.

        } else {
                struct vm_area_struct *vma;

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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