microblaze: rt_sigreturn is too trigger-happy about sigaltstack errors

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-20 10:41:11 -05:00 · 2012-11-20 10:41:11 -05:00 · 02232f8d2b
parent afd3f96dc3
commit 02232f8d2b
1 changed files with 1 additions and 1 deletions
--- a/arch/microblaze/kernel/signal.c
+++ b/arch/microblaze/kernel/signal.c
@ -111,7 +111,7 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)

 	/* It is more difficult to avoid calling this function than to
 	 call it and ignore errors. */
-	if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->r1))
+	if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->r1) == -EFAULT)
 		goto badframe;

 	return rval;