[ Upstream commit 3b401e30c249849d803de6c332dad2a595a58658 ] With the current cleanup flow, we could trigger a NULL pointer dereference if there is a delayed destruction of a BO with a system resource that gets executed on drain_workqueue() call, as we attempt to free a resource using an already released resource manager. Remove the device from the device list and drain its workqueue before releasing the system domain manager in ttm_device_fini(). Signed-off-by: Karolina Stolarek <karolina.stolarek@intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20231016121525.2237838-1-karolina.stolarek@intel.com Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.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.
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