diff options
| author | Jonathan Gray <jsg@cvs.openbsd.org> | 2021-07-19 10:27:53 +0000 |
|---|---|---|
| committer | Jonathan Gray <jsg@cvs.openbsd.org> | 2021-07-19 10:27:53 +0000 |
| commit | 96242d8b4558309023b4f41392ba3ef83cab80a0 (patch) | |
| tree | 6d90700dcb21c8e85ac8ec599b9d04d8f331d07f /sys/dev/pci/drm | |
| parent | a0b1dd59daeab4c44c61ab95c51e644f149d5b7d (diff) | |
drm/amdkfd: Fix circular lock in nocpsch path
From Amber Lin
0e72b151e394106ad3e3d5bebd1118952970047a in linux 5.10.y/5.10.51
a7b2451d31cfa2e8aeccf3b35612ce33f02371fc in mainline linux
Diffstat (limited to 'sys/dev/pci/drm')
| -rw-r--r-- | sys/dev/pci/drm/amd/amdkfd/kfd_device_queue_manager.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/sys/dev/pci/drm/amd/amdkfd/kfd_device_queue_manager.c b/sys/dev/pci/drm/amd/amdkfd/kfd_device_queue_manager.c index b971532e69e..ffb3d37881a 100644 --- a/sys/dev/pci/drm/amd/amdkfd/kfd_device_queue_manager.c +++ b/sys/dev/pci/drm/amd/amdkfd/kfd_device_queue_manager.c @@ -486,9 +486,6 @@ static int destroy_queue_nocpsch_locked(struct device_queue_manager *dqm, if (retval == -ETIME) qpd->reset_wavefronts = true; - - mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj); - list_del(&q->list); if (list_empty(&qpd->queues_list)) { if (qpd->reset_wavefronts) { @@ -523,6 +520,8 @@ static int destroy_queue_nocpsch(struct device_queue_manager *dqm, int retval; uint64_t sdma_val = 0; struct kfd_process_device *pdd = qpd_to_pdd(qpd); + struct mqd_manager *mqd_mgr = + dqm->mqd_mgrs[get_mqd_type_from_queue_type(q->properties.type)]; /* Get the SDMA queue stats */ if ((q->properties.type == KFD_QUEUE_TYPE_SDMA) || @@ -540,6 +539,8 @@ static int destroy_queue_nocpsch(struct device_queue_manager *dqm, pdd->sdma_past_activity_counter += sdma_val; dqm_unlock(dqm); + mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj); + return retval; } @@ -1632,7 +1633,7 @@ static int set_trap_handler(struct device_queue_manager *dqm, static int process_termination_nocpsch(struct device_queue_manager *dqm, struct qcm_process_device *qpd) { - struct queue *q, *next; + struct queue *q; struct device_process_node *cur, *next_dpn; int retval = 0; bool found = false; @@ -1640,12 +1641,19 @@ static int process_termination_nocpsch(struct device_queue_manager *dqm, dqm_lock(dqm); /* Clear all user mode queues */ - list_for_each_entry_safe(q, next, &qpd->queues_list, list) { + while (!list_empty(&qpd->queues_list)) { + struct mqd_manager *mqd_mgr; int ret; + q = list_first_entry(&qpd->queues_list, struct queue, list); + mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type( + q->properties.type)]; ret = destroy_queue_nocpsch_locked(dqm, qpd, q); if (ret) retval = ret; + dqm_unlock(dqm); + mqd_mgr->free_mqd(mqd_mgr, q->mqd, q->mqd_mem_obj); + dqm_lock(dqm); } /* Unregister process */ |