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authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2017-11-29 22:29:47 +0900
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-12-18 15:59:17 +0100
commit533dfb250d1c8d2bb8c9b65252f7b296b29913d4 (patch)
tree3e18255457cf2d693e5f984dcb0ebdeb3c79892b /drivers/android
parent22ec1a2aea73b9dfe340dff7945bd85af4cc6280 (diff)
downloadlinux-533dfb250d1c8d2bb8c9b65252f7b296b29913d4.tar.bz2
android: binder: Check for errors in binder_alloc_shrinker_init().
Both list_lru_init() and register_shrinker() might return an error. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Sherry Yang <sherryy@android.com> Cc: Michal Hocko <mhocko@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/android')
-rw-r--r--drivers/android/binder.c4
-rw-r--r--drivers/android/binder_alloc.c12
-rw-r--r--drivers/android/binder_alloc.h2
3 files changed, 13 insertions, 5 deletions
diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index 85b0bb497759..a54a0f1f69a9 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -5569,7 +5569,9 @@ static int __init binder_init(void)
struct binder_device *device;
struct hlist_node *tmp;
- binder_alloc_shrinker_init();
+ ret = binder_alloc_shrinker_init();
+ if (ret)
+ return ret;
atomic_set(&binder_transaction_log.cur, ~0U);
atomic_set(&binder_transaction_log_failed.cur, ~0U);
diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c
index 0dba2308125c..fdf9d9f12aac 100644
--- a/drivers/android/binder_alloc.c
+++ b/drivers/android/binder_alloc.c
@@ -1006,8 +1006,14 @@ void binder_alloc_init(struct binder_alloc *alloc)
INIT_LIST_HEAD(&alloc->buffers);
}
-void binder_alloc_shrinker_init(void)
+int binder_alloc_shrinker_init(void)
{
- list_lru_init(&binder_alloc_lru);
- register_shrinker(&binder_shrinker);
+ int ret = list_lru_init(&binder_alloc_lru);
+
+ if (ret == 0) {
+ ret = register_shrinker(&binder_shrinker);
+ if (ret)
+ list_lru_destroy(&binder_alloc_lru);
+ }
+ return ret;
}
diff --git a/drivers/android/binder_alloc.h b/drivers/android/binder_alloc.h
index 0b145307f1fd..9ef64e563856 100644
--- a/drivers/android/binder_alloc.h
+++ b/drivers/android/binder_alloc.h
@@ -130,7 +130,7 @@ extern struct binder_buffer *binder_alloc_new_buf(struct binder_alloc *alloc,
size_t extra_buffers_size,
int is_async);
extern void binder_alloc_init(struct binder_alloc *alloc);
-void binder_alloc_shrinker_init(void);
+extern int binder_alloc_shrinker_init(void);
extern void binder_alloc_vma_close(struct binder_alloc *alloc);
extern struct binder_buffer *
binder_alloc_prepare_to_free(struct binder_alloc *alloc,