b094fece38
commit 6b79f96f4a23846516e5e6e4dd37fc06f43a60dd upstream. If virtio_gpu_object_shmem_init() fails (e.g. due to fault injection, as it happened in the bug report by syzbot), virtio_gpu_array_put_free() could be called with objs equal to NULL. Ensure that objs is not NULL in virtio_gpu_array_put_free(), or otherwise return from the function. Cc: stable@vger.kernel.org # 5.13.x Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com> Reported-by: syzbot+e9072e90624a31dfa85f@syzkaller.appspotmail.com Fixes: 377f8331d0565 ("drm/virtio: fix possible leak/unlock virtio_gpu_object_array") Link: http://patchwork.freedesktop.org/patch/msgid/20211213183122.838119-1-roberto.sassu@huawei.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.