diff options
| -rw-r--r-- | drivers/char/diag/diagchar_core.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/char/diag/diagchar_core.c b/drivers/char/diag/diagchar_core.c index afaedc99a4e7..5cc4d8fbd0c8 100644 --- a/drivers/char/diag/diagchar_core.c +++ b/drivers/char/diag/diagchar_core.c @@ -1836,14 +1836,18 @@ static int diag_ioctl_lsm_deinit(void) { int i; + mutex_lock(&driver->diagchar_mutex); for (i = 0; i < driver->num_clients; i++) if (driver->client_map[i].pid == current->tgid) break; - if (i == driver->num_clients) + if (i == driver->num_clients) { + mutex_unlock(&driver->diagchar_mutex); return -EINVAL; + } driver->data_ready[i] |= DEINIT_TYPE; + mutex_unlock(&driver->diagchar_mutex); wake_up_interruptible(&driver->wait_q); return 1; |