This is a note to let you know that I've just added the patch titled
binder: use EPOLLERR from eventpoll.h
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
binder-use-epollerr-from-eventpoll.h.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6ac061db9c58ca5b9270b1b3940d2464fb3ff183 Mon Sep 17 00:00:00 2001
From: Carlos Llamas <cmllamas@xxxxxxxxxx>
Date: Fri, 1 Dec 2023 17:21:30 +0000
Subject: binder: use EPOLLERR from eventpoll.h
From: Carlos Llamas <cmllamas@xxxxxxxxxx>
commit 6ac061db9c58ca5b9270b1b3940d2464fb3ff183 upstream.
Use EPOLLERR instead of POLLERR to make sure it is cast to the correct
__poll_t type. This fixes the following sparse issue:
drivers/android/binder.c:5030:24: warning: incorrect type in return expression (different base types)
drivers/android/binder.c:5030:24: expected restricted __poll_t
drivers/android/binder.c:5030:24: got int
Fixes: f88982679f54 ("binder: check for binder_thread allocation failure in binder_poll()")
Cc: stable@xxxxxxxxxxxxxxx
Cc: Eric Biggers <ebiggers@xxxxxxxxxx>
Reviewed-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>
Signed-off-by: Carlos Llamas <cmllamas@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20231201172212.1813387-2-cmllamas@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/android/binder.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -4836,7 +4836,7 @@ static __poll_t binder_poll(struct file
thread = binder_get_thread(proc);
if (!thread)
- return POLLERR;
+ return EPOLLERR;
binder_inner_proc_lock(thread->proc);
thread->looper |= BINDER_LOOPER_STATE_POLL;
Patches currently in stable-queue which might be from cmllamas@xxxxxxxxxx are
queue-5.15/binder-use-epollerr-from-eventpoll.h.patch
queue-5.15/binder-fix-use-after-free-in-shinker-s-callback.patch
queue-5.15/binder-fix-trivial-typo-of-binder_free_buf_locked.patch
queue-5.15/binder-fix-comment-on-binder_alloc_new_buf-return-value.patch
