[PATCH] powerpc: prevent stack corruption in call_prom_ret

Use the correct pointer to clear the memory of the return values,
to prevent stack corruption in the callers stackframe.

Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 4ce0105c308ea04b7be7fd88524b4c8b25fdef73..bcdc209dca8525b5337678a1fdb80ac09f58871f 100644 (file)
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -265,7 +265,7 @@ static int __init call_prom_ret(const char *service, int nargs, int nret,
        va_end(list);
 
        for (i = 0; i < nret; i++)
-               rets[nargs+i] = 0;
+               args.args[nargs+i] = 0;
 
        if (enter_prom(&args, RELOC(prom_entry)) < 0)
                return PROM_ERROR;