Re: WARNING in binder_transaction_buffer_release (2)

[syzbot]

syzbot suspects this issue was fixed by commit:

commit 4b836a1426cb0f1ef2a6e211d7e553221594f8fc
Author: Jann Horn <jannh@xxxxxxxxxx>
Date:   Mon Jul 27 12:04:24 2020 +0000

    binder: Prevent context manager from incrementing ref 0

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10c84dec900000
start commit:   9cb1fd0e Linux 5.7-rc7
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=cca7550d53ffa599
dashboard link: https://syzkaller.appspot.com/bug?extid=e113a0b970b7b3f394ba
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1230353c100000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17fd535e100000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: binder: Prevent context manager from incrementing ref 0

For information about bisection process see: https://goo.gl/tpsmEJ#bisection