add led

hc

2024-05-10 10ebd8556b7990499c896a550e3d416b444211e6

 kernel/arch/arm64/kernel/sys_compat.c
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@@ -1,21 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Based on arch/arm/kernel/sys_arm.c
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  *
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  * Copyright (C) People who wrote linux/arch/i386/kernel/sys_i386.c
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  * Copyright (C) 1995, 1996 Russell King.
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  * Copyright (C) 2012 ARM Ltd.
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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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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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  */
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 #include <linux/compat.h>
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@@ -69,7 +58,7 @@
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 	if (end < start || flags)
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 		return -EINVAL;
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-	if (!access_ok(VERIFY_READ, (const void __user *)start, end - start))
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+	if (!access_ok((const void __user *)start, end - start))
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 		return -EFAULT;
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 	return __do_compat_cache_op(start, end);
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@@ -79,7 +68,7 @@
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  */
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 long compat_arm_syscall(struct pt_regs *regs, int scno)
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 {
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-	siginfo_t info;
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+	unsigned long addr;
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 	switch (scno) {
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 	/*
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@@ -122,13 +111,9 @@
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 		break;
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 	}
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-	clear_siginfo(&info);
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-	info.si_signo = SIGILL;
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-	info.si_errno = 0;
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-	info.si_code  = ILL_ILLTRP;
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-	info.si_addr  = (void __user *)instruction_pointer(regs) -
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-			 (compat_thumb_mode(regs) ? 2 : 4);
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+	addr = instruction_pointer(regs) - (compat_thumb_mode(regs) ? 2 : 4);
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-	arm64_notify_die("Oops - bad compat syscall(2)", regs, &info, scno);
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+	arm64_notify_die("Oops - bad compat syscall(2)", regs,
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+			 SIGILL, ILL_ILLTRP, addr, 0);
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 	return 0;
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 }