[PATCH] x86: Don't require the vDSO for handling a.out signals
and in other strange binfmts. vDSO is not necessarily mapped there.
Signed-off-by: Andi Kleen <ak@suse.de>
diff --git a/arch/i386/kernel/signal.c b/arch/i386/kernel/signal.c
index 8f4afcc..4f99e87 100644
--- a/arch/i386/kernel/signal.c
+++ b/arch/i386/kernel/signal.c
@@ -21,6 +21,7 @@
#include <linux/suspend.h>
#include <linux/ptrace.h>
#include <linux/elf.h>
+#include <linux/binfmts.h>
#include <asm/processor.h>
#include <asm/ucontext.h>
#include <asm/uaccess.h>
@@ -349,7 +350,10 @@
goto give_sigsegv;
}
- restorer = (void *)VDSO_SYM(&__kernel_sigreturn);
+ if (current->binfmt->hasvdso)
+ restorer = (void *)VDSO_SYM(&__kernel_sigreturn);
+ else
+ restorer = (void *)&frame->retcode;
if (ka->sa.sa_flags & SA_RESTORER)
restorer = ka->sa.sa_restorer;