--- zzzz-none-000/linux-3.10.107/arch/tile/kernel/compat_signal.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/tile/kernel/compat_signal.c	2021-02-04 17:41:59.000000000 +0000
@@ -32,6 +32,7 @@
 #include <asm/ucontext.h>
 #include <asm/sigframe.h>
 #include <asm/syscalls.h>
+#include <asm/vdso.h>
 #include <arch/interrupts.h>
 
 struct compat_ucontext {
@@ -48,7 +49,7 @@
 	struct compat_ucontext uc;
 };
 
-int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from)
+int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *from)
 {
 	int err;
 
@@ -67,7 +68,7 @@
 	if (from->si_code < 0) {
 		err |= __put_user(from->si_pid, &to->si_pid);
 		err |= __put_user(from->si_uid, &to->si_uid);
-		err |= __put_user(ptr_to_compat(from->si_ptr), &to->si_ptr);
+		err |= __put_user(from->si_int, &to->si_int);
 	} else {
 		/*
 		 * First 32bits of unions are always present:
@@ -92,8 +93,7 @@
 			break;
 		case __SI_TIMER >> 16:
 			err |= __put_user(from->si_overrun, &to->si_overrun);
-			err |= __put_user(ptr_to_compat(from->si_ptr),
-					  &to->si_ptr);
+			err |= __put_user(from->si_int, &to->si_int);
 			break;
 			 /* This is not generated by the kernel as of now.  */
 		case __SI_RT >> 16:
@@ -109,7 +109,6 @@
 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from)
 {
 	int err;
-	u32 ptr32;
 
 	if (!access_ok(VERIFY_READ, from, sizeof(struct compat_siginfo)))
 		return -EFAULT;
@@ -120,8 +119,7 @@
 
 	err |= __get_user(to->si_pid, &from->si_pid);
 	err |= __get_user(to->si_uid, &from->si_uid);
-	err |= __get_user(ptr32, &from->si_ptr);
-	to->si_ptr = compat_ptr(ptr32);
+	err |= __get_user(to->si_int, &from->si_int);
 
 	return err;
 }
@@ -189,32 +187,25 @@
 	return (void __user *) sp;
 }
 
-int compat_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
-			  sigset_t *set, struct pt_regs *regs)
+int compat_setup_rt_frame(struct ksignal *ksig, sigset_t *set,
+			  struct pt_regs *regs)
 {
 	unsigned long restorer;
 	struct compat_rt_sigframe __user *frame;
-	int err = 0;
-	int usig;
+	int err = 0, sig = ksig->sig;
 
-	frame = compat_get_sigframe(ka, regs, sizeof(*frame));
+	frame = compat_get_sigframe(&ksig->ka, regs, sizeof(*frame));
 
 	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
-		goto give_sigsegv;
-
-	usig = current_thread_info()->exec_domain
-		&& current_thread_info()->exec_domain->signal_invmap
-		&& sig < 32
-		? current_thread_info()->exec_domain->signal_invmap[sig]
-		: sig;
+		goto err;
 
 	/* Always write at least the signal number for the stack backtracer. */
-	if (ka->sa.sa_flags & SA_SIGINFO) {
+	if (ksig->ka.sa.sa_flags & SA_SIGINFO) {
 		/* At sigreturn time, restore the callee-save registers too. */
-		err |= copy_siginfo_to_user32(&frame->info, info);
+		err |= copy_siginfo_to_user32(&frame->info, &ksig->info);
 		regs->flags |= PT_FLAGS_RESTORE_REGS;
 	} else {
-		err |= __put_user(info->si_signo, &frame->info.si_signo);
+		err |= __put_user(ksig->info.si_signo, &frame->info.si_signo);
 	}
 
 	/* Create the ucontext.  */
@@ -225,11 +216,11 @@
 	err |= setup_sigcontext(&frame->uc.uc_mcontext, regs);
 	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
 	if (err)
-		goto give_sigsegv;
+		goto err;
 
-	restorer = VDSO_BASE;
-	if (ka->sa.sa_flags & SA_RESTORER)
-		restorer = ptr_to_compat_reg(ka->sa.sa_restorer);
+	restorer = VDSO_SYM(&__vdso_rt_sigreturn);
+	if (ksig->ka.sa.sa_flags & SA_RESTORER)
+		restorer = ptr_to_compat_reg(ksig->ka.sa.sa_restorer);
 
 	/*
 	 * Set up registers for signal handler.
@@ -238,17 +229,18 @@
 	 * We always pass siginfo and mcontext, regardless of SA_SIGINFO,
 	 * since some things rely on this (e.g. glibc's debug/segfault.c).
 	 */
-	regs->pc = ptr_to_compat_reg(ka->sa.sa_handler);
+	regs->pc = ptr_to_compat_reg(ksig->ka.sa.sa_handler);
 	regs->ex1 = PL_ICS_EX1(USER_PL, 1); /* set crit sec in handler */
 	regs->sp = ptr_to_compat_reg(frame);
 	regs->lr = restorer;
-	regs->regs[0] = (unsigned long) usig;
+	regs->regs[0] = (unsigned long) sig;
 	regs->regs[1] = ptr_to_compat_reg(&frame->info);
 	regs->regs[2] = ptr_to_compat_reg(&frame->uc);
 	regs->flags |= PT_FLAGS_CALLER_SAVES;
 	return 0;
 
-give_sigsegv:
-	signal_fault("bad setup frame", regs, frame, sig);
+err:
+	trace_unhandled_signal("bad sigreturn frame", regs,
+			      (unsigned long)frame, SIGSEGV);
 	return -EFAULT;
 }