Amdgpu driver uses 4-byte data type as DQM fence memory, and transmits GPU address of fence memory to microcode through query status PM4 message. However, query status PM4 message definition and microcode processing are all processed according to 8 bytes. Fence memory only allocates 4 bytes of memory, but microcode does write 8 bytes of memory, so there is a memory corruption.
Signed-off-by: Qu Huang jinsdb@126.com --- drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
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 e686ce2..8b38d0c 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c @@ -1161,7 +1161,7 @@ static int start_cpsch(struct device_queue_manager *dqm) pr_debug("Allocating fence memory\n");
/* allocate fence memory on the gart */ - retval = kfd_gtt_sa_allocate(dqm->dev, sizeof(*dqm->fence_addr), + retval = kfd_gtt_sa_allocate(dqm->dev, sizeof(uint64_t), &dqm->fence_mem);
if (retval)