tile: compat rt_sigreturn gets too enthusiastic about sigaltstack errors
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/tile/kernel/compat_signal.c b/arch/tile/kernel/compat_signal.c
index 210a9bb..2e4cc69 100644
--- a/arch/tile/kernel/compat_signal.c
+++ b/arch/tile/kernel/compat_signal.c
@@ -248,7 +248,7 @@
if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
goto badframe;
- if (compat_sys_sigaltstack(&frame->uc.uc_stack, NULL) != 0)
+ if (compat_sys_sigaltstack(&frame->uc.uc_stack, NULL) == -EFAULT)
goto badframe;
return 0;