Messages in this thread | | | Date | Mon, 29 Aug 2022 13:34:52 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH 1/7] binder: fix alloc->vma_vm_mm null-ptr dereference |
| |
On Mon, 29 Aug 2022 20:12:48 +0000 Carlos Llamas <cmllamas@google.com> wrote:
> Syzbot reported a couple issues introduced by commit 44e602b4e52f > ("binder_alloc: add missing mmap_lock calls when using the VMA"), in > which we attempt to acquire the mmap_lock when alloc->vma_vm_mm has not > been initialized yet. > > This can happen if a binder_proc receives a transaction without having > previously called mmap() to setup the binder_proc->alloc space in [1]. > Also, a similar issue occurs via binder_alloc_print_pages() when we try > to dump the debugfs binder stats file in [2].
Thanks. I assume you'll be merging all these into mainline?
> > Fixes: 44e602b4e52f ("binder_alloc: add missing mmap_lock calls when using the VMA") > Reported-by: syzbot+f7dc54e5be28950ac459@syzkaller.appspotmail.com > Reported-by: syzbot+a75ebe0452711c9e56d9@syzkaller.appspotmail.com > Cc: <stable@vger.kernel.org> # v5.15+
44e602b4e52f is only present in 6.0-rcX?
| |