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| author | Alex Shi <alex.shi@linaro.org> | 2016-07-21 13:58:19 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2016-07-21 13:58:19 +0800 |
| commit | 74b60e9f6f938d0cd4c7a71e583aee3cc6c5fbba (patch) | |
| tree | 15cbca70f3f6d7e10da7d82154a78e6ca35dca8c /fs/proc/base.c | |
| parent | f24f1475658431d60bcd4e6e5de951ba1663dd43 (diff) | |
| parent | 1d508e233d21a7848cf54d7d03b40dac2d9ea873 (diff) | |
Merge branch 'linux-linaro-lsk-v4.1' into linux-linaro-lsk-v4.1-rtlsk-v4.1-16.07-rt
Conflicts:
mm/swap.c
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 68d51ed1666f..239dca3fb676 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -759,7 +759,8 @@ 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); |