修改内核路径

hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/fs/btrfs/rcu-string.h
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@@ -8,7 +8,7 @@
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 struct rcu_string {
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 	struct rcu_head rcu;
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-	char str[0];
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+	char str[];
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 };
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 static inline struct rcu_string *rcu_string_strdup(const char *src, gfp_t mask)
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@@ -18,7 +18,11 @@
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 					 (len * sizeof(char)), mask);
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 	if (!ret)
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 		return ret;
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-	strncpy(ret->str, src, len);
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+	/* Warn if the source got unexpectedly truncated. */
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+	if (WARN_ON(strscpy(ret->str, src, len) < 0)) {
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+		kfree(ret);
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+		return NULL;
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+	}
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 	return ret;
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 }
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