diff options
| -rw-r--r-- | fs/proc/base.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index c2828110208..fc471b8766d 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -919,20 +919,18 @@ static ssize_t environ_read(struct file *file, char __user *buf, if (!task) goto out_no_task; - if (!ptrace_may_access(task, PTRACE_MODE_READ)) - goto out; - ret = -ENOMEM; page = (char *)__get_free_page(GFP_TEMPORARY); if (!page) goto out; - ret = 0; - mm = get_task_mm(task); - if (!mm) + mm = mm_for_maps(task); + ret = PTR_ERR(mm); + if (!mm || IS_ERR(mm)) goto out_free; + ret = 0; while (count > 0) { int this_len, retval, max_len; |