vulkan : improve ggml_vk_create_buffer error handling #9898
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This PR solves a segfault on Mali GPU. Sorry I can't give an easy reproduction since I can't reproduce it on my desktop GPU.
In
ggml_vk_create_buffer, whendevice->device.createBufferthrows an exception (e.g. out of memory ifsizeis too large), the program will crash. Note in this casebuf->sizeis already set butbuf->deviceis not set, the destructor ofvk_buffer_structwill cause trouble since its device is invalid.The PR solves the problem by setting
buf->sizeonly at the end of success path. Now when the context length is too long or model is too large, it will print a proper error message instead of segfault.