# VkDeviceFaultShaderAbortMessageInfoKHR(3) Manual Page

## Name

VkDeviceFaultShaderAbortMessageInfoKHR - Structure specifying message data from code:OpAbortKHR

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## C Specification

The `VkDeviceFaultShaderAbortMessageInfoKHR` structure is defined as:

    // Provided by VK_KHR_shader_abort
    typedef struct VkDeviceFaultShaderAbortMessageInfoKHR {
        VkStructureType    sType;
        void*              pNext;
        uint64_t           messageDataSize;
        void*              pMessageData;
    } VkDeviceFaultShaderAbortMessageInfoKHR;

## Members

- `sType` is a VkStructureType value identifying this structure.

- `pNext` is `NULL` or a pointer to a structure extending this structure.

- `messageDataSize` is the size of `pMessageData` in bytes. If `pMessageData` is `NULL`, this value is populated by the implementation.

- `pMessageData` is `NULL` or a pointer to `messageDataSize` bytes of data, which will be populated with data for messages reported via `OpAbortKHR`. If `pMessageData` is `NULL` then `messageDataSize` will be populated with the required size.

## Description

This structure can be included in the `pNext` chain of VkDeviceFaultDebugInfoKHR to retrieve messages returned by `OpAbortKHR` instructions.

`pMessageData` is populated with a series of (size,payload) pairs, each aligned to 8-byte boundaries. The size in each pair is a 64-bit integer indicating the number of bytes in the subsequent payload. The data in payload is laid out in the exact manner specified in the `OpAbortKHR` instruction by the message type, with no modifications. If multiple messages are present, the next message size will always be at the following 8-byte aligned offset after the payload ends.

Implementations must report the message reported by the first `OpAbortKHR` instruction executed in an invocation for this device. They may report additional messages if other invocations continued to execute after the abort instruction was executed.

Note | Even though shading languages may provide definitions for printf-style abort commands, no formatting is performed by the Vulkan implementation. Applications should consult documentation for the shader language they are using on how abort messages are packed, so that they can unpack them after they are queried.

Valid Usage (Implicit)

- VUID-VkDeviceFaultShaderAbortMessageInfoKHR-sType-sType
  `sType` must be VK_STRUCTURE_TYPE_DEVICE_FAULT_SHADER_ABORT_MESSAGE_INFO_KHR

Structure Chaining

Extends the structure

  - VkDeviceFaultDebugInfoKHR

## See Also

VK_KHR_shader_abort, VkStructureType

## Document Notes

For more information, see the Vulkan Specification.

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

## Copyright

Copyright 2014-2026 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0