From bce7698e2e6565bb765bd0522337f29f5f312624 Mon Sep 17 00:00:00 2001 From: Haojie Li Date: Tue, 25 Aug 2026 18:08:45 +0800 Subject: drm/mediatek: Add missing IS_ERR check for ovl_adaptor platform device platform_device_register_data() can fail and return an ERR_PTR, but the return value is used without checking, leading to an invalid pointer being stored in ddp_comp[].dev and passed to component_match_add() and mtk_ddp_comp_init(), which could result in a kernel crash. Add an IS_ERR() check to jump to the error handling path on failure. Fixes: 0d9eee9118b7 ("drm/mediatek: Add drm ovl_adaptor sub driver for MT8195") Cc: stable@vger.kernel.org Signed-off-by: Haojie Li Reviewed-by: CK Hu Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260825100845.438893-1-lihaojie@kylinos.cn/ Signed-off-by: Chun-Kuang Hu --- tools/testing/radix-tree/test.h | 59 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 tools/testing/radix-tree/test.h (limited to 'tools/testing/radix-tree/test.h') diff --git a/tools/testing/radix-tree/test.h b/tools/testing/radix-tree/test.h new file mode 100644 index 000000000..7ef7067e9 --- /dev/null +++ b/tools/testing/radix-tree/test.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#include +#include +#include +#include + +struct item { + struct rcu_head rcu_head; + unsigned long index; + unsigned int order; +}; + +struct item *item_create(unsigned long index, unsigned int order); +int item_insert(struct radix_tree_root *root, unsigned long index); +void item_sanity(struct item *item, unsigned long index); +void item_free(struct item *item, unsigned long index); +int item_delete(struct radix_tree_root *root, unsigned long index); +int item_delete_rcu(struct xarray *xa, unsigned long index); +struct item *item_lookup(struct radix_tree_root *root, unsigned long index); + +void item_check_present(struct radix_tree_root *root, unsigned long index); +void item_check_absent(struct radix_tree_root *root, unsigned long index); +void item_gang_check_present(struct radix_tree_root *root, + unsigned long start, unsigned long nr, + int chunk, int hop); +void item_full_scan(struct radix_tree_root *root, unsigned long start, + unsigned long nr, int chunk); +void item_kill_tree(struct radix_tree_root *root); + +int tag_tagged_items(struct xarray *, unsigned long start, unsigned long end, + unsigned batch, xa_mark_t iftag, xa_mark_t thentag); + +void xarray_tests(void); +void tag_check(void); +void multiorder_checks(void); +void iteration_test(unsigned order, unsigned duration); +void iteration_test2(unsigned duration); +void benchmark(void); +void idr_checks(void); +void ida_tests(void); + +struct item * +item_tag_set(struct radix_tree_root *root, unsigned long index, int tag); +struct item * +item_tag_clear(struct radix_tree_root *root, unsigned long index, int tag); +int item_tag_get(struct radix_tree_root *root, unsigned long index, int tag); +void tree_verify_min_height(struct radix_tree_root *root, int maxindex); +void verify_tag_consistency(struct radix_tree_root *root, unsigned int tag); + +extern int nr_allocated; + +/* Normally private parts of lib/radix-tree.c */ +struct radix_tree_node *entry_to_node(void *ptr); +void radix_tree_dump(struct radix_tree_root *root); +int root_tag_get(struct radix_tree_root *root, unsigned int tag); +unsigned long node_maxindex(struct radix_tree_node *); +unsigned long shift_maxindex(unsigned int shift); +int radix_tree_cpu_dead(unsigned int cpu); +extern struct radix_tree_preload radix_tree_preloads; -- cgit v1.3.1