diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-05-09 09:39:13 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-05-09 09:39:13 +0200 |
| commit | 10ee08292028d3d22d201a34ba7d24a085818cb3 (patch) | |
| tree | cf3bff48a7eab154574355f00a4b4f27dc85ff11 /fs/proc/base.c | |
| parent | 7da4b8b7378790dd1e4af1bb7522863127fa1438 (diff) | |
| parent | 44549e8f5eea4e0a41b487b63e616cb089922b99 (diff) | |
Merge 4.6-rc7 into tty-next
We want the pty fixes in here as well so that patches can build on it.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 b1755b23893e..92e37e224cd2 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); |