proc/smaps: carefully handle migration entries

[~andy/linux] / fs / proc / namespaces.c

diff --git a/fs/proc/namespaces.c b/fs/proc/namespaces.c
index 3551f1f839eb163801a22bfb1243211ee41b404f..0d9e23a39e495f0d6dd0a69d0f84aaa05faef9b5 100644 (file)
--- a/fs/proc/namespaces.c
+++ b/fs/proc/namespaces.c
@@ -156,15 +156,15 @@ static struct dentry *proc_ns_dir_lookup(struct inode *dir,
        if (!ptrace_may_access(task, PTRACE_MODE_READ))
                goto out;
 
-       last = &ns_entries[ARRAY_SIZE(ns_entries) - 1];
-       for (entry = ns_entries; entry <= last; entry++) {
+       last = &ns_entries[ARRAY_SIZE(ns_entries)];
+       for (entry = ns_entries; entry < last; entry++) {
                if (strlen((*entry)->name) != len)
                        continue;
                if (!memcmp(dentry->d_name.name, (*entry)->name, len))
                        break;
        }
        error = ERR_PTR(-ENOENT);
-       if (entry > last)
+       if (entry == last)
                goto out;
 
        error = proc_ns_instantiate(dir, dentry, task, *entry);