setarch: don't return address of automatic variable

On architectures without special personalities setarch uses the contents
of a local variable with automatic storage duration after return from
the function, causing it to report a spurious error.

$ setarch m68k
setarch: Kernel cannot set architecture to m68k

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>

diff --git a/sys-utils/setarch.c b/sys-utils/setarch.c
index 7c0a63fbb262bf8d1d49c25966cda289ec70b15d..703c36d864e150f701cefeeb58b9e44e272208c7 100644 (file)
--- a/sys-utils/setarch.c
+++ b/sys-utils/setarch.c
@@ -131,7 +131,7 @@ static void __attribute__((__noreturn__)) usage(int archwrapper)
  */
 static struct arch_domain *init_arch_domains(void)
 {
-       struct utsname un;
+       static struct utsname un;
        size_t i;
 
        static struct arch_domain transitions[] =