disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/arch/nds32/include/asm/futex.h
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@@ -1,4 +1,4 @@
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-// SPDX-License-Identifier: GPL-2.0
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+/* SPDX-License-Identifier: GPL-2.0 */
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 // Copyright (C) 2005-2017 Andes Technology Corporation
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 #ifndef __NDS32_FUTEX_H__
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@@ -40,7 +40,7 @@
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 	int ret = 0;
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 	u32 val, tmp, flags;
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-	if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
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+	if (!access_ok(uaddr, sizeof(u32)))
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 		return -EFAULT;
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 	smp_mb();
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@@ -66,8 +66,8 @@
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 {
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 	int oldval = 0, ret;
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-
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-	pagefault_disable();
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+	if (!access_ok(uaddr, sizeof(u32)))
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+		return -EFAULT;
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 	switch (op) {
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 	case FUTEX_OP_SET:
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 		__futex_atomic_op("move	%0, %3", ret, oldval, tmp, uaddr,
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@@ -92,8 +92,6 @@
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 	default:
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 		ret = -ENOSYS;
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 	}
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-
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-	pagefault_enable();
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 	if (!ret)
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 		*oval = oldval;