optee_shm_register() expected pages to be passed as an array of page pointers rather than as an array of contiguous pages. So fix that via correctly passing pages as per expectation.

Fixes: a249dd200d03 ("tee: optee: Fix dynamic shm pool allocations") Reported-by: Vincent Cao vincent.t.cao@intel.com Signed-off-by: Sumit Garg sumit.garg@linaro.org Tested-by: Vincent Cao vincent.t.cao@intel.com ---

Changes in v2: - Fix memory leak for "pages" pointer.

drivers/tee/optee/shm_pool.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/drivers/tee/optee/shm_pool.c b/drivers/tee/optee/shm_pool.c index 0332a53..d767eeb 100644 --- a/drivers/tee/optee/shm_pool.c +++ b/drivers/tee/optee/shm_pool.c @@ -28,9 +28,22 @@ static int pool_op_alloc(struct tee_shm_pool_mgr *poolm, shm->size = PAGE_SIZE << order;

if (shm->flags & TEE_SHM_DMA_BUF) { + unsigned int nr_pages = 1 << order, i; + struct page **pages; + + pages = kcalloc(nr_pages, sizeof(pages), GFP_KERNEL); + if (!pages) + return -ENOMEM; + + for (i = 0; i < nr_pages; i++) { + pages[i] = page; + page++; + } + shm->flags |= TEE_SHM_REGISTER; - rc = optee_shm_register(shm->ctx, shm, &page, 1 << order, + rc = optee_shm_register(shm->ctx, shm, pages, nr_pages, (unsigned long)shm->kaddr); + kfree(pages); }

return rc;