diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/proc/base.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index 46ea5d5..d092194 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -204,12 +204,17 @@ static int proc_pid_environ(struct task_struct *task, char * buffer) int res = 0; struct mm_struct *mm = get_task_mm(task); if (mm) { - unsigned int len = mm->env_end - mm->env_start; + unsigned int len; + + res = -ESRCH; + if (!ptrace_may_attach(task)) + goto out; + + len = mm->env_end - mm->env_start; if (len > PAGE_SIZE) len = PAGE_SIZE; res = access_process_vm(task, mm->env_start, buffer, len, 0); - if (!ptrace_may_attach(task)) - res = -ESRCH; +out: mmput(mm); } return res; |