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hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/alpha/kernel/signal.c
..
..
@@ -65,7 +65,7 @@
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 	if (act) {
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 		old_sigset_t mask;
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-		if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
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+		if (!access_ok(act, sizeof(*act)) ||
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 		    __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
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 		    __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
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 		    __get_user(mask, &act->sa_mask))
..
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@@ -77,7 +77,7 @@
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 	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
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 	if (!ret && oact) {
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-		if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
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+		if (!access_ok(oact, sizeof(*oact)) ||
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 		    __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
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 		    __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
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 		    __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
..
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@@ -207,7 +207,7 @@
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 	sigset_t set;
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 	/* Verify that it's a good sigcontext before using it */
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-	if (!access_ok(VERIFY_READ, sc, sizeof(*sc)))
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+	if (!access_ok(sc, sizeof(*sc)))
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 		goto give_sigsegv;
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 	if (__get_user(set.sig[0], &sc->sc_mask))
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 		goto give_sigsegv;
..
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@@ -225,7 +225,7 @@
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 	return;
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 give_sigsegv:
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-	force_sig(SIGSEGV, current);
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+	force_sig(SIGSEGV);
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 }
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 asmlinkage void
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@@ -235,7 +235,7 @@
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 	sigset_t set;
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 	/* Verify that it's a good ucontext_t before using it */
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-	if (!access_ok(VERIFY_READ, &frame->uc, sizeof(frame->uc)))
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+	if (!access_ok(&frame->uc, sizeof(frame->uc)))
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 		goto give_sigsegv;
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 	if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
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 		goto give_sigsegv;
..
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@@ -253,7 +253,7 @@
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 	return;
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 give_sigsegv:
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-	force_sig(SIGSEGV, current);
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+	force_sig(SIGSEGV);
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 }
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..
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@@ -332,7 +332,7 @@
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 	oldsp = rdusp();
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 	frame = get_sigframe(ksig, oldsp, sizeof(*frame));
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-	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
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+	if (!access_ok(frame, sizeof(*frame)))
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 		return -EFAULT;
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 	err |= setup_sigcontext(&frame->sc, regs, set->sig[0], oldsp);
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@@ -377,7 +377,7 @@
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 	oldsp = rdusp();
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 	frame = get_sigframe(ksig, oldsp, sizeof(*frame));
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-	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
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+	if (!access_ok(frame, sizeof(*frame)))
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 		return -EFAULT;
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 	err |= copy_siginfo_to_user(&frame->info, &ksig->info);
..
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@@ -453,7 +453,7 @@
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 			regs->r0 = EINTR;
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 			break;
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 		}
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-		/* fallthrough */
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+		fallthrough;
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 	case ERESTARTNOINTR:
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 		regs->r0 = r0;	/* reset v0 and a3 and replay syscall */
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 		regs->r19 = r19;
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@@ -527,11 +527,10 @@
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 			schedule();
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 		} else {
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 			local_irq_enable();
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-			if (thread_flags & _TIF_SIGPENDING) {
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+			if (thread_flags & (_TIF_SIGPENDING|_TIF_NOTIFY_SIGNAL)) {
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 				do_signal(regs, r0, r19);
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 				r0 = 0;
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 			} else {
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-				clear_thread_flag(TIF_NOTIFY_RESUME);
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 				tracehook_notify_resume(regs);
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 			}
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 		}