diff options
Diffstat (limited to 'drivers/connector/cn_proc.c')
| -rw-r--r-- | drivers/connector/cn_proc.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c index 0debc17c8e28..e55814bc0d06 100644 --- a/drivers/connector/cn_proc.c +++ b/drivers/connector/cn_proc.c @@ -29,7 +29,8 @@ #include <linux/connector.h> #include <linux/gfp.h> #include <linux/ptrace.h> -#include <asm/atomic.h> +#include <linux/atomic.h> + #include <asm/unaligned.h> #include <linux/cn_proc.h> @@ -56,6 +57,7 @@ void proc_fork_connector(struct task_struct *task) struct proc_event *ev; __u8 buffer[CN_PROC_MSG_SIZE]; struct timespec ts; + struct task_struct *parent; if (atomic_read(&proc_event_num_listeners) < 1) return; @@ -66,8 +68,11 @@ void proc_fork_connector(struct task_struct *task) ktime_get_ts(&ts); /* get high res monotonic timestamp */ put_unaligned(timespec_to_ns(&ts), (__u64 *)&ev->timestamp_ns); ev->what = PROC_EVENT_FORK; - ev->event_data.fork.parent_pid = task->real_parent->pid; - ev->event_data.fork.parent_tgid = task->real_parent->tgid; + rcu_read_lock(); + parent = rcu_dereference(task->real_parent); + ev->event_data.fork.parent_pid = parent->pid; + ev->event_data.fork.parent_tgid = parent->tgid; + rcu_read_unlock(); ev->event_data.fork.child_pid = task->pid; ev->event_data.fork.child_tgid = task->tgid; |