1 files changed, 5 insertions, 4 deletions

diff --git a/fs/proc/self.c b/fs/proc/self.c
index 31326bb23b8b..4d7d061696b3 100644
--- a/fs/proc/self.c
+++ b/fs/proc/self.c
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
+#include <linux/cache.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/pid_namespace.h>
@@ -17,11 +18,11 @@ static const char *proc_self_get_link(struct dentry *dentry,
 
         if (!tgid)
                 return ERR_PTR(-ENOENT);
-        /* 11 for max length of signed int in decimal + NULL term */
-        name = kmalloc(12, dentry ? GFP_KERNEL : GFP_ATOMIC);
+        /* max length of unsigned int in decimal + NULL term */
+        name = kmalloc(10 + 1, dentry ? GFP_KERNEL : GFP_ATOMIC);
         if (unlikely(!name))
                 return dentry ? ERR_PTR(-ENOMEM) : ERR_PTR(-ECHILD);
-        sprintf(name, "%d", tgid);
+        sprintf(name, "%u", tgid);
         set_delayed_call(done, kfree_link, name);
         return name;
 }
@@ -30,7 +31,7 @@ static const struct inode_operations proc_self_inode_operations = {
         .get_link       = proc_self_get_link,
 };
 
-static unsigned self_inum;
+static unsigned self_inum __ro_after_init;
 
 int proc_setup_self(struct super_block *s)
 {