6.6-stable review patch. If anyone has any objections, please let me know.
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From: Thomas Hellström thomas.hellstrom@linux.intel.com
commit 40510a941d27d405a82dc3320823d875f94625df upstream.
If caching mode change fails due to, for example, OOM we free the allocated pages in a two-step process. First the pages for which the caching change has already succeeded. Secondly the pages for which a caching change did not succeed.
However the second step was incorrectly freeing the pages already freed in the first step.
Fix.
Signed-off-by: Thomas Hellström thomas.hellstrom@linux.intel.com Fixes: 379989e7cbdc ("drm/ttm/pool: Fix ttm_pool_alloc error path") Cc: Christian König christian.koenig@amd.com Cc: Dave Airlie airlied@redhat.com Cc: Christian Koenig christian.koenig@amd.com Cc: Huang Rui ray.huang@amd.com Cc: dri-devel@lists.freedesktop.org Cc: stable@vger.kernel.org # v6.4+ Reviewed-by: Matthew Auld matthew.auld@intel.com Reviewed-by: Christian König christian.koenig@amd.com Link: https://patchwork.freedesktop.org/patch/msgid/20240221073324.3303-1-thomas.h... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/ttm/ttm_pool.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/ttm/ttm_pool.c +++ b/drivers/gpu/drm/ttm/ttm_pool.c @@ -384,7 +384,7 @@ static void ttm_pool_free_range(struct t enum ttm_caching caching, pgoff_t start_page, pgoff_t end_page) { - struct page **pages = tt->pages; + struct page **pages = &tt->pages[start_page]; unsigned int order; pgoff_t i, nr;