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-rw-r--r--drivers/connector/cn_proc.c16
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c
index 354c1ff17159..c5afc98e2675 100644
--- a/drivers/connector/cn_proc.c
+++ b/drivers/connector/cn_proc.c
@@ -106,6 +106,7 @@ void proc_id_connector(struct task_struct *task, int which_id)
struct proc_event *ev;
__u8 buffer[CN_PROC_MSG_SIZE];
struct timespec ts;
+ const struct cred *cred;
if (atomic_read(&proc_event_num_listeners) < 1)
return;
@@ -115,14 +116,19 @@ void proc_id_connector(struct task_struct *task, int which_id)
ev->what = which_id;
ev->event_data.id.process_pid = task->pid;
ev->event_data.id.process_tgid = task->tgid;
+ rcu_read_lock();
+ cred = __task_cred(task);
if (which_id == PROC_EVENT_UID) {
- ev->event_data.id.r.ruid = task->cred->uid;
- ev->event_data.id.e.euid = task->cred->euid;
+ ev->event_data.id.r.ruid = cred->uid;
+ ev->event_data.id.e.euid = cred->euid;
} else if (which_id == PROC_EVENT_GID) {
- ev->event_data.id.r.rgid = task->cred->gid;
- ev->event_data.id.e.egid = task->cred->egid;
- } else
+ ev->event_data.id.r.rgid = cred->gid;
+ ev->event_data.id.e.egid = cred->egid;
+ } else {
+ rcu_read_unlock();
return;
+ }
+ rcu_read_unlock();
get_seq(&msg->seq, &ev->cpu);
ktime_get_ts(&ts); /* get high res monotonic timestamp */
put_unaligned(timespec_to_ns(&ts), (__u64 *)&ev->timestamp_ns);