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| author | Dave Airlie <airlied@redhat.com> | 2016-05-09 13:49:56 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2016-05-09 13:49:56 +1000 |
| commit | bafb86f5bc3173479002555dea7f31d943b12332 (patch) | |
| tree | 6ec94c96460faf782cdb8781339560e13e0918b0 /fs/proc/base.c | |
| parent | ba391646d0d43aee3596b616113cce0f22dde627 (diff) | |
| parent | 44549e8f5eea4e0a41b487b63e616cb089922b99 (diff) | |
| download | linux-bafb86f5bc3173479002555dea7f31d943b12332.tar.gz linux-bafb86f5bc3173479002555dea7f31d943b12332.tar.xz | |
Merge tag 'v4.6-rc7' into drm-next
Merge this back as we've built up a fair few conflicts, and I have
some newer trees to pull in.
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); |