From: Jeff Layton <jlayton@redhat.com>
Date: Wed, 10 Oct 2012 20:43:21 +0000 (-0400)
Subject: procfs: don't need a PATH_MAX allocation to hold a string representation of an int
X-Git-Tag: firefly_0821_release~3680^2~1836^2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f81700bd831efcd12eb7f0e66b24b16c2ad00a32;p=firefly-linux-kernel-4.4.55.git

procfs: don't need a PATH_MAX allocation to hold a string representation of an int

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/proc/base.c b/fs/proc/base.c
index ef5c84be66f9..144a96732dd7 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2258,7 +2258,8 @@ static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
 	pid_t tgid = task_tgid_nr_ns(current, ns);
 	char *name = ERR_PTR(-ENOENT);
 	if (tgid) {
-		name = __getname();
+		/* 11 for max length of signed int in decimal + NULL term */
+		name = kmalloc(12, GFP_KERNEL);
 		if (!name)
 			name = ERR_PTR(-ENOMEM);
 		else
@@ -2273,7 +2274,7 @@ static void proc_self_put_link(struct dentry *dentry, struct nameidata *nd,
 {
 	char *s = nd_get_link(nd);
 	if (!IS_ERR(s))
-		__putname(s);
+		kfree(s);
 }
 
 static const struct inode_operations proc_self_inode_operations = {