diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-05-14 05:45:59 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-05-14 05:45:59 -0300 |
| commit | c91265cd0efb83778f015b4d4b1129bd2cfd075e (patch) | |
| tree | c9e2ebed36b5a70f0d7c58cb7e3d36e823ccde9f /fs/proc | |
| parent | a5cdf7364020a61375af3c8aa23e09181f5c2c6c (diff) | |
Linux-libre 4.5.4-gnupck-4.5.4-gnu
Diffstat (limited to 'fs/proc')
| -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 11aba74cb..80e4bc69f 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -955,7 +955,8 @@ static ssize_t environ_read(struct file *file, char __user *buf, struct mm_struct *mm = file->private_data; unsigned long env_start, env_end; - 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); |