linux-kernel - [PATCH 3.19.y-ckt 131/196] drivers: android: correct the size of struct binder_uintptr_t for BC_DEAD_BINDER

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Message-Id: <1457483454-30115-132-git-send-email-kamal@canonical.com>
Date:	Tue,  8 Mar 2016 16:29:49 -0800
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Lisa Du <cldu@...vell.com>,
	Nicolas Boichat <drinkcat@...omium.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.19.y-ckt 131/196] drivers: android: correct the size of struct binder_uintptr_t for BC_DEAD_BINDER_DONE

3.19.8-ckt16 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Lisa Du <cldu@...vell.com>

commit 7a64cd887fdb97f074c3fda03bee0bfb9faceac3 upstream.

There's one point was missed in the patch commit da49889deb34 ("staging:
binder: Support concurrent 32 bit and 64 bit processes."). When configure
BINDER_IPC_32BIT, the size of binder_uintptr_t was 32bits, but size of
void * is 64bit on 64bit system. Correct it here.

Signed-off-by: Lisa Du <cldu@...vell.com>
Signed-off-by: Nicolas Boichat <drinkcat@...omium.org>
Fixes: da49889deb34 ("staging: binder: Support concurrent 32 bit and 64 bit processes.")
Acked-by: Olof Johansson <olof@...om.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/android/binder.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index 8c43521..daf78ea 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -2051,7 +2051,7 @@ static int binder_thread_write(struct binder_proc *proc,
 			if (get_user(cookie, (binder_uintptr_t __user *)ptr))
 				return -EFAULT;
 
-			ptr += sizeof(void *);
+			ptr += sizeof(cookie);
 			list_for_each_entry(w, &proc->delivered_death, entry) {
 				struct binder_ref_death *tmp_death = container_of(w, struct binder_ref_death, work);
 
-- 
2.7.0