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hc

2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/include/linux/thread_info.h
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@@ -110,7 +110,17 @@
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 #define test_thread_flag(flag) \
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 	test_ti_thread_flag(current_thread_info(), flag)
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-#define tif_need_resched() test_thread_flag(TIF_NEED_RESCHED)
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+#ifdef CONFIG_PREEMPT_LAZY
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+#define tif_need_resched()	(test_thread_flag(TIF_NEED_RESCHED) || \
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+				 test_thread_flag(TIF_NEED_RESCHED_LAZY))
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+#define tif_need_resched_now()	(test_thread_flag(TIF_NEED_RESCHED))
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+#define tif_need_resched_lazy()	test_thread_flag(TIF_NEED_RESCHED_LAZY))
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+
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+#else
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+#define tif_need_resched()	test_thread_flag(TIF_NEED_RESCHED)
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+#define tif_need_resched_now()	test_thread_flag(TIF_NEED_RESCHED)
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+#define tif_need_resched_lazy()	0
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+#endif
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 #ifndef CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES
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 static inline int arch_within_stack_frames(const void * const stack,
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@@ -147,7 +157,7 @@
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 	WARN(1, "Buffer overflow detected (%d < %lu)!\n", size, count);
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 }
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-static __always_inline bool
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+static __always_inline __must_check bool
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 check_copy_size(const void *addr, size_t bytes, bool is_source)
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 {
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 	int sz = __compiletime_object_size(addr);
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@@ -160,6 +170,8 @@
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 			__bad_copy_to();
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 		return false;
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 	}
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+	if (WARN_ON_ONCE(bytes > INT_MAX))
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+		return false;
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 	check_object_size(addr, bytes, is_source);
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 	return true;
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 }