diff options
Diffstat (limited to 'drivers/android/binder.c')
| -rw-r--r-- | drivers/android/binder.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 57f52a2afa35..16288e777ec3 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -2744,6 +2744,10 @@ static long binder_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) /*pr_info("binder_ioctl: %d:%d %x %lx\n", proc->pid, current->pid, cmd, arg);*/ + if (unlikely(current->mm != proc->vma_vm_mm)) { + pr_err("current mm mismatch proc mm\n"); + return -EINVAL; + } trace_binder_ioctl(cmd, arg); ret = wait_event_interruptible(binder_user_error_wait, binder_stop_on_user_error < 2); @@ -2958,6 +2962,7 @@ static int binder_open(struct inode *nodp, struct file *filp) return -ENOMEM; get_task_struct(current); proc->tsk = current; + proc->vma_vm_mm = current->mm; INIT_LIST_HEAD(&proc->todo); init_waitqueue_head(&proc->wait); proc->default_priority = task_nice(current); |