6ce4431c7b
The bug is here: return encoder; The list iterator value 'encoder' will *always* be set and non-NULL by drm_for_each_encoder_mask(), so it is incorrect to assume that the iterator value will be NULL if the list is empty or no element found. Otherwise it will bypass some NULL checks and lead to invalid memory access passing the check. To fix this bug, just return 'encoder' when found, otherwise return NULL. Cc: stable@vger.kernel.org Fixes: 12885ecbfe62d ("drm/nouveau/kms/nvd9-: Add CRC support") Signed-off-by: Xiaomeng Tong <xiam0nd.tong@gmail.com> Reviewed-by: Lyude Paul <lyude@redhat.com> [Changed commit title] Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220327073925.11121-1-xiam0nd.tong@gmail.com
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.