From: Dan Carpenter <error27@gmail.com>
Date: Tue, 23 Mar 2010 20:35:42 +0000 (-0700)
Subject: kcore: fix test for end of list
X-Git-Tag: firefly_0821_release~9833^2~2504
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4fd2c20d964a8fb9861045f1022475c9d200d684;p=firefly-linux-kernel-4.4.55.git

kcore: fix test for end of list

"m" is never NULL here.  We need a different test for the end of list
condition.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index a44a7897fd4d..b442dac8f5f9 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -490,7 +490,7 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos)
 		}
 		read_unlock(&kclist_lock);
 
-		if (m == NULL) {
+		if (&m->list == &kclist_head) {
 			if (clear_user(buffer, tsz))
 				return -EFAULT;
 		} else if (is_vmalloc_or_module_addr((void *)start)) {