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Message-ID: <20221130035805.1823970-5-cmllamas@google.com>
Date: Wed, 30 Nov 2022 03:58:03 +0000
From: Carlos Llamas <cmllamas@...gle.com>
To: stable@...nel.org, Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Arve Hjønnevåg" <arve@...roid.com>,
Todd Kjos <tkjos@...roid.com>,
Martijn Coenen <maco@...roid.com>,
Joel Fernandes <joel@...lfernandes.org>,
Christian Brauner <christian@...uner.io>,
Hridya Valsaraju <hridya@...gle.com>,
Suren Baghdasaryan <surenb@...gle.com>
Cc: linux-kernel@...r.kernel.org, kernel-team@...roid.com,
Arnd Bergmann <arnd@...db.de>, Todd Kjos <tkjos@...gle.com>,
Randy Dunlap <rdunlap@...radead.org>,
Christian Brauner <christian.brauner@...ntu.com>,
Carlos Llamas <cmllamas@...gle.com>
Subject: [PATCH 5.10 4/6] binder: fix pointer cast warning
From: Arnd Bergmann <arnd@...db.de>
commit 9a0a930fe2535a76ad70d3f43caeccf0d86a3009 upstream.
binder_uintptr_t is not the same as uintptr_t, so converting it into a
pointer requires a second cast:
drivers/android/binder.c: In function 'binder_translate_fd_array':
drivers/android/binder.c:2511:28: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
2511 | sender_ufda_base = (void __user *)sender_uparent->buffer + fda->parent_offset;
| ^
Fixes: 656e01f3ab54 ("binder: read pre-translated fds from sender buffer")
Acked-by: Todd Kjos <tkjos@...gle.com>
Acked-by: Randy Dunlap <rdunlap@...radead.org> # build-tested
Acked-by: Christian Brauner <christian.brauner@...ntu.com>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
Link: https://lore.kernel.org/r/20211207122448.1185769-1-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Carlos Llamas <cmllamas@...gle.com>
---
drivers/android/binder.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index 83c4501153b4..398ce65b578b 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -2908,7 +2908,8 @@ static int binder_translate_fd_array(struct list_head *pf_head,
*/
fda_offset = (parent->buffer - (uintptr_t)t->buffer->user_data) +
fda->parent_offset;
- sender_ufda_base = (void __user *)sender_uparent->buffer + fda->parent_offset;
+ sender_ufda_base = (void __user *)(uintptr_t)sender_uparent->buffer +
+ fda->parent_offset;
if (!IS_ALIGNED((unsigned long)fda_offset, sizeof(u32)) ||
!IS_ALIGNED((unsigned long)sender_ufda_base, sizeof(u32))) {
--
2.38.1.584.g0f3c55d4c2-goog
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