The intent is to check if 'dest' is truncated or not. So, >= should be
used instead of >, because strlcat() returns the length of 'dest' and 'src'
excluding the trailing NULL.
Fixes: 56463e50d1fc ("NFS: Use super.c for NFSROOT mount option parsing")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Reviewed-by: Benjamin Coddington <bcodding@xxxxxxxxxx>
---
v2: - Fix a typo in the commit message [Benjamin Coddington]
- Add R-b tag
v1: https://lore.kernel.org/all/856a652a7e28dde246b00025da7d4115978ae75f.1698184400.git.christophe.jaillet@xxxxxxxxxx/
---
fs/nfs/nfsroot.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/nfs/nfsroot.c b/fs/nfs/nfsroot.c
index 7600100ba26f..432612d22437 100644
--- a/fs/nfs/nfsroot.c
+++ b/fs/nfs/nfsroot.c
@@ -175,10 +175,10 @@ static int __init root_nfs_cat(char *dest, const char *src,
size_t len = strlen(dest);
if (len && dest[len - 1] != ',')
- if (strlcat(dest, ",", destlen) > destlen)
+ if (strlcat(dest, ",", destlen) >= destlen)
return -1;
- if (strlcat(dest, src, destlen) > destlen)
+ if (strlcat(dest, src, destlen) >= destlen)
return -1;
return 0;
}
--
2.43.2
