[Bug 102704] vkAllocateDeviceMemory does not check memory heap size

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Sep 13 12:20:13 UTC 2017


https://bugs.freedesktop.org/show_bug.cgi?id=102704

            Bug ID: 102704
           Summary: vkAllocateDeviceMemory does not check memory heap size
           Product: Mesa
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Vulkan/intel
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: nioko1337 at googlemail.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org
                CC: jason at jlekstrand.net

So there is a vulkan wrapper called vulkano (written in rust), and one test
case in particular fails on anv.

The code snippet allocates more memory than reported by vkMemoryHeap.size, but
in multiple allocations. I would expect this to fail with
VK_ERROR_OUT_OF_DEVICE_MEMORY, but it doesn't.

I currently only have a rust code snippet, but from the code it should be
obvious what's happening under the hood:

    #[test]
    #[ignore] // TODO: test fails for now on Mesa+Intel
    fn oom_multi() {
        let (device, _) = gfx_dev_and_queue!();
        let mem_ty = device
            .physical_device()
            .memory_types()
            .filter(|m| !m.is_lazily_allocated())
            .next()
            .unwrap();
        let heap_size = mem_ty.heap().size();

        let mut allocs = Vec::new();

        for _ in 0 .. 4 {
            match DeviceMemory::alloc(device.clone(), mem_ty, heap_size / 3) {
               
Err(DeviceMemoryAllocError::OomError(OomError::OutOfDeviceMemory)) => return,
// test succeeded
                Ok(a) => allocs.push(a),
                _ => (),
            }
        }

        panic!()
    }

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