diff options
| author | wzedlare <vedatak01@gmail.com> | 2017-06-18 16:38:26 +0000 |
|---|---|---|
| committer | wzedlare <vedatak01@gmail.com> | 2017-06-19 16:57:11 +0000 |
| commit | c7d4e3fd588e3ba3d3fa4d5cfa224aa54bc288bf (patch) | |
| tree | b8b64cb9deb6832c1e41f58f0f143514beafc709 /fs/proc/base.c | |
| parent | 28c99c87b881bb664c44bb26e80a681f87d54e60 (diff) | |
Change-Id: Ia4c94f09e29843b1af34d466243378a357e97b70
Diffstat (limited to 'fs/proc/base.c')
| -rw-r--r-- | fs/proc/base.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index 9dd86519..bfbeb596 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -752,7 +752,8 @@ static ssize_t environ_read(struct file *file, char __user *buf, int ret = 0; struct mm_struct *mm = file->private_data; - if (!mm) + /* Ensure the process spawned far enough to have an environment. */ + if (!mm || !mm->env_end) return 0; page = (char *)__get_free_page(GFP_TEMPORARY); |