summaryrefslogtreecommitdiff
path: root/drivers/staging
diff options
context:
space:
mode:
authorArve Hjønnevåg <arve@android.com>2012-10-16 15:29:54 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-10-22 13:23:19 -0700
commit675d66b0ed5fd170d6a44cf8dbb3fa56a5347bdb (patch)
tree379272035fc1fbfaa86d78f22e3cfb05c12a833f /drivers/staging
parent922b67c1ac53014d80649a961a2fde700cd065d8 (diff)
Staging: android: binder: Fix memory leak on thread/process exit
If a thread or process exited while a reply, one-way transaction or death notification was pending, the struct holding the pending work was leaked. Signed-off-by: Arve Hjønnevåg <arve@android.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
-rw-r--r--drivers/staging/android/binder.c28
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/staging/android/binder.c b/drivers/staging/android/binder.c
index 7b0ba92e7e46..db6c4c5c2551 100644
--- a/drivers/staging/android/binder.c
+++ b/drivers/staging/android/binder.c
@@ -2419,14 +2419,38 @@ static void binder_release_work(struct list_head *list)
struct binder_transaction *t;
t = container_of(w, struct binder_transaction, work);
- if (t->buffer->target_node && !(t->flags & TF_ONE_WAY))
+ if (t->buffer->target_node &&
+ !(t->flags & TF_ONE_WAY)) {
binder_send_failed_reply(t, BR_DEAD_REPLY);
+ } else {
+ binder_debug(BINDER_DEBUG_DEAD_TRANSACTION,
+ "binder: undelivered transaction %d\n",
+ t->debug_id);
+ t->buffer->transaction = NULL;
+ kfree(t);
+ binder_stats_deleted(BINDER_STAT_TRANSACTION);
+ }
} break;
case BINDER_WORK_TRANSACTION_COMPLETE: {
+ binder_debug(BINDER_DEBUG_DEAD_TRANSACTION,
+ "binder: undelivered TRANSACTION_COMPLETE\n");
kfree(w);
binder_stats_deleted(BINDER_STAT_TRANSACTION_COMPLETE);
} break;
+ case BINDER_WORK_DEAD_BINDER_AND_CLEAR:
+ case BINDER_WORK_CLEAR_DEATH_NOTIFICATION: {
+ struct binder_ref_death *death;
+
+ death = container_of(w, struct binder_ref_death, work);
+ binder_debug(BINDER_DEBUG_DEAD_TRANSACTION,
+ "binder: undelivered death notification, %p\n",
+ death->cookie);
+ kfree(death);
+ binder_stats_deleted(BINDER_STAT_DEATH);
+ } break;
default:
+ pr_err("binder: unexpected work type, %d, not freed\n",
+ w->type);
break;
}
}
@@ -2899,6 +2923,7 @@ static void binder_deferred_release(struct binder_proc *proc)
nodes++;
rb_erase(&node->rb_node, &proc->nodes);
list_del_init(&node->work.entry);
+ binder_release_work(&node->async_todo);
if (hlist_empty(&node->refs)) {
kfree(node);
binder_stats_deleted(BINDER_STAT_NODE);
@@ -2937,6 +2962,7 @@ static void binder_deferred_release(struct binder_proc *proc)
binder_delete_ref(ref);
}
binder_release_work(&proc->todo);
+ binder_release_work(&proc->delivered_death);
buffers = 0;
while ((n = rb_first(&proc->allocated_buffers))) {