kernel_5.10 no rt

hc

2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f

 kernel/arch/arc/kernel/signal.c
..
..
@@ -1,11 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Signal Handling for ARC
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  *
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  * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  *
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  * vineetg: Jan 2010 (Restarting of timer related syscalls)
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  *
..
..
@@ -212,7 +209,7 @@
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 	sf = (struct rt_sigframe __force __user *)(regs->sp);
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-	if (!access_ok(VERIFY_READ, sf, sizeof(*sf)))
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+	if (!access_ok(sf, sizeof(*sf)))
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 		goto badframe;
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214
 
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 	if (__get_user(magic, &sf->sigret_magic))
..
..
@@ -240,7 +237,7 @@
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 	return regs->r0;
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 badframe:
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-	force_sig(SIGSEGV, current);
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+	force_sig(SIGSEGV);
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 	return 0;
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 }
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..
..
@@ -262,7 +259,7 @@
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 	frame = (void __user *)((sp - framesize) & ~7);
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 	/* Check that we can actually write to the signal frame */
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-	if (!access_ok(VERIFY_WRITE, frame, framesize))
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+	if (!access_ok(frame, framesize))
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 		frame = NULL;
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264
 
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 	return frame;
..
..
@@ -367,7 +364,7 @@
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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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 		/*
..
..
@@ -408,7 +405,7 @@
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 	restart_scall = in_syscall(regs) && syscall_restartable(regs);
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-	if (get_signal(&ksig)) {
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+	if (test_thread_flag(TIF_SIGPENDING) && get_signal(&ksig)) {
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 		if (restart_scall) {
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 			arc_restart_syscall(&ksig.ka, regs);
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 			syscall_wont_restart(regs);	/* No more restarts */
..
..
@@ -440,6 +437,6 @@
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 	 * ASM glue gaurantees that this is only called when returning to
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 	 * user mode
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 	 */
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-	if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME))
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+	if (test_thread_flag(TIF_NOTIFY_RESUME))
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 		tracehook_notify_resume(regs);
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 }