From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/fs/btrfs/rcu-string.h | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/kernel/fs/btrfs/rcu-string.h b/kernel/fs/btrfs/rcu-string.h
index a97dc74..5c2b66d 100644
--- a/kernel/fs/btrfs/rcu-string.h
+++ b/kernel/fs/btrfs/rcu-string.h
@@ -8,7 +8,7 @@
struct rcu_string {
struct rcu_head rcu;
- char str[0];
+ char str[];
};
static inline struct rcu_string *rcu_string_strdup(const char *src, gfp_t mask)
@@ -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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