Lv Yunlong ea995218dd drm/i915/gt: Fix a double free in gen8_preallocate_top_level_pdp ... Our code analyzer reported a double free bug. In gen8_preallocate_top_level_pdp, pde and pde->pt.base are allocated via alloc_pd(vm) with one reference. If pin_pt_dma() failed, pde->pt.base is freed by i915_gem_object_put() with a reference dropped. Then free_pd calls free_px() defined in intel_ppgtt.c, which calls i915_gem_object_put() to put pde->pt.base again. As pde->pt.base is protected by refcount, so the second put will not free pde->pt.base actually. But, maybe it is better to remove the first put? Fixes: 82adf90113 ("drm/i915/gt: Shrink i915_page_directory's slab bucket") Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Signed-off-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210426124340.4238-1-lyl2019@mail.ustc.edu.cn (cherry picked from commit ac69496fe6) Signed-off-by: Jani Nikula <jani.nikula@intel.com>		2021-05-12 20:52:40 +03:00
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drm	drm/i915/gt: Fix a double free in gen8_preallocate_top_level_pdp	2021-05-12 20:52:40 +03:00
host1x	gpu: host1x: Add early init and late exit callbacks	2021-03-31 17:42:14 +02:00
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