From 9999e48639b3cecb08ffb37358bcba3b48161b29 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 08:50:17 +0000
Subject: [PATCH] add ax88772_rst

---
 kernel/fs/btrfs/rcu-string.h |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/kernel/fs/btrfs/rcu-string.h b/kernel/fs/btrfs/rcu-string.h
index 5c1a617..5c2b66d 100644
--- a/kernel/fs/btrfs/rcu-string.h
+++ b/kernel/fs/btrfs/rcu-string.h
@@ -18,7 +18,11 @@
 					 (len * sizeof(char)), mask);
 	if (!ret)
 		return ret;
-	strncpy(ret->str, src, len);
+	/* Warn if the source got unexpectedly truncated. */
+	if (WARN_ON(strscpy(ret->str, src, len) < 0)) {
+		kfree(ret);
+		return NULL;
+	}
 	return ret;
 }
 

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