AMD General This series Reviewed-by: Harish Kasiviswanathan <[email protected]> ________________________________ From: amd-gfx <[email protected]> on behalf of David Francis <[email protected]> Sent: Tuesday, May 12, 2026 3:28 PM To: [email protected] <[email protected]> Cc: Francis, David <[email protected]> Subject: [PATCH 2/2] drm/amdkfd: Check bounds for allocate_sdma_queue restore_sdma_id
allocate_sdma_queue has an option where the sdma queue id can be specified (used by CRIU). We weren't bounds-checking that value. Confirm it's less than the maximum number of queues. Signed-off-by: David Francis <[email protected]> --- drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c index b4cc74138f1e..ddbc4bd8ab10 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c @@ -1727,6 +1727,9 @@ static int allocate_sdma_queue(struct device_queue_manager *dqm, } if (restore_sdma_id) { + if (restore_sdma_id >= get_num_sdma_queues(dqm)) + return -EINVAL; + /* Re-use existing sdma_id */ if (!test_bit(*restore_sdma_id, dqm->sdma_bitmap)) { dev_err(dev, "SDMA queue already in use\n"); @@ -1753,6 +1756,9 @@ static int allocate_sdma_queue(struct device_queue_manager *dqm, return -ENOMEM; } if (restore_sdma_id) { + if (restore_sdma_id >= get_num_xgmi_sdma_queues(dqm)) + return -EINVAL; + /* Re-use existing sdma_id */ if (!test_bit(*restore_sdma_id, dqm->xgmi_sdma_bitmap)) { dev_err(dev, "SDMA queue already in use\n"); -- 2.34.1
