From 71df2cb2869da2e43600efe64106ce5682d992c5 Mon Sep 17 00:00:00 2001 From: Carlos Llamas Date: Sun, 21 Apr 2024 17:37:49 +0000 Subject: [PATCH] binder: fix max_thread type inconsistency MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit commit 42316941335644a98335f209daafa4c122f28983 upstream. The type defined for the BINDER_SET_MAX_THREADS ioctl was changed from size_t to __u32 in order to avoid incompatibility issues between 32 and 64-bit kernels. However, the internal types used to copy from user and store the value were never updated. Use u32 to fix the inconsistency. Fixes: a9350fc859ae ("staging: android: binder: fix BINDER_SET_MAX_THREADS declaration") Reported-by: Arve Hjønnevåg Cc: stable@vger.kernel.org Signed-off-by: Carlos Llamas Reviewed-by: Alice Ryhl Link: https://lore.kernel.org/r/20240421173750.3117808-1-cmllamas@google.com Signed-off-by: Greg Kroah-Hartman --- drivers/android/binder.c | 2 +- drivers/android/binder_internal.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 64f4573656c6..e67a91120385 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -5368,7 +5368,7 @@ static long binder_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) goto err; break; case BINDER_SET_MAX_THREADS: { - int max_threads; + u32 max_threads; if (copy_from_user(&max_threads, ubuf, sizeof(max_threads))) { diff --git a/drivers/android/binder_internal.h b/drivers/android/binder_internal.h index 7270d4d22207..5b7c80b99ae8 100644 --- a/drivers/android/binder_internal.h +++ b/drivers/android/binder_internal.h @@ -421,7 +421,7 @@ struct binder_proc { struct list_head todo; struct binder_stats stats; struct list_head delivered_death; - int max_threads; + u32 max_threads; int requested_threads; int requested_threads_started; int tmp_ref;