In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add NULL check for clkmgr in dcn32inithw This commit addresses a potential null pointer dereference issue in the dcn32_init_hw
function. The issue could occur when dc->clk_mgr
is null. The fix adds a check to ensure dc->clk_mgr
is not null before accessing its functions. This prevents a potential null pointer dereference. Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn32/dcn32hwseq.c:961 dcn32inithw() error: we previously assumed 'dc->clk_mgr' could be null (see line 782)