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| author | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2017-11-29 22:29:47 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-18 15:59:17 +0100 |
| commit | 533dfb250d1c8d2bb8c9b65252f7b296b29913d4 (patch) | |
| tree | 3e18255457cf2d693e5f984dcb0ebdeb3c79892b | |
| parent | 22ec1a2aea73b9dfe340dff7945bd85af4cc6280 (diff) | |
| download | linux-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>
| -rw-r--r-- | drivers/android/binder.c | 4 | ||||
| -rw-r--r-- | drivers/android/binder_alloc.c | 12 | ||||
| -rw-r--r-- | drivers/android/binder_alloc.h | 2 |
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, |