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Diffstat (limited to 'fs/kernfs/symlink.c')
-rw-r--r--fs/kernfs/symlink.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/kernfs/symlink.c b/fs/kernfs/symlink.c
index 5145ae2f0572..d273e3accade 100644
--- a/fs/kernfs/symlink.c
+++ b/fs/kernfs/symlink.c
@@ -63,6 +63,9 @@ static int kernfs_get_target_path(struct kernfs_node *parent,
if (base == kn)
break;
+ if ((s - path) + 3 >= PATH_MAX)
+ return -ENAMETOOLONG;
+
strcpy(s, "../");
s += 3;
base = base->parent;
@@ -79,7 +82,7 @@ static int kernfs_get_target_path(struct kernfs_node *parent,
if (len < 2)
return -EINVAL;
len--;
- if ((s - path) + len > PATH_MAX)
+ if ((s - path) + len >= PATH_MAX)
return -ENAMETOOLONG;
/* reverse fillup of target string from target to base */