This is a note to let you know that I've just added the patch titled
ANDROID: binder: fix proc->tsk check.
to the 4.9-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:
android-binder-fix-proc-tsk-check.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b2a6d1b999a4c13e5997bb864694e77172d45250 Mon Sep 17 00:00:00 2001
From: Martijn Coenen <maco@xxxxxxxxxxx>
Date: Fri, 28 Jul 2017 13:56:08 +0200
Subject: ANDROID: binder: fix proc->tsk check.
From: Martijn Coenen <maco@xxxxxxxxxxx>
commit b2a6d1b999a4c13e5997bb864694e77172d45250 upstream.
Commit c4ea41ba195d ("binder: use group leader instead of open thread")'
was incomplete and didn't update a check in binder_mmap(), causing all
mmap() calls into the binder driver to fail.
Signed-off-by: Martijn Coenen <maco@xxxxxxxxxxx>
Tested-by: John Stultz <john.stultz@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
@@ -2875,7 +2875,7 @@ static int binder_mmap(struct file *filp
const char *failure_string;
struct binder_buffer *buffer;
- if (proc->tsk != current)
+ if (proc->tsk != current->group_leader)
return -EINVAL;
if ((vma->vm_end - vma->vm_start) > SZ_4M)
Patches currently in stable-queue which might be from maco@xxxxxxxxxxx are
queue-4.9/android-binder-fix-proc-tsk-check.patch