seg fault went called vkCmdPushDescriptorSet with validation layer.

[SSSS-VIII]

Environment:

• OS: fedora 43
• GPU and driver version: NV | NVIDIA-SMI 580.105.08
• SDK or header version if building from repo: 1.4.312
• Options enabled (synchronization, best practices, etc.): no

enable validation layers and use vkCmdPushDescriptorSet to push a Set in to hlsl shader, app crash. when disable validation layer it will be fine. I was using vertex buffer and cleaned all validation errs before , after I switch to using structure buffer in hlsl and use this API to push buffer the validation layer crash.

and I can't debug this problem , I got a gdb full stack below: I have build a debug ver validation layer from this repo and enable the layer I built, but the gdb sitll can't give a call stack, the command gdb provied cannot download that debuginfo, I think the nv driver dose not have a debuginfo at all ?I dont know what wrong, maybe someone can help me to get a gdb stack?

Thread 1 "linncube" received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
Missing rpms, try: dnf --enablerepo='debug' install xorg-x11-drv-nvidia-libs-debuginfo-580.105.08-1.fc43.x86_64
(gdb) bt full
#0 0x0000000000000000 in ?? ()
No symbol table info available.
#1 0x0000000000404058 in main (argc=4, argv=0x7fffffffdcd8) at /home/linn/linncube/linncube.c:1007

1007 ： vkCmdPushDescriptorSet(cmdBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, ARRAY_SIZE(vkWriteDescSets), vkWriteDescSets);

[SSSS-VIII]

I think it maybe caused by the vkCmdPushDescriptorSet are not supported by validation layer yet? I switch to the vkCmdPushDescriptorSetKHR and then the validation dont crash, It says I have a validatio err but that when the app exit I have someting not released . so I think it is a validation bug? but I cant give the call stack , I m still dont know how to get my gdb work.

[ziga-lunarg]

That sounds like you are using api version lower than VK_VERSION_1_4. In order to use vkCmdPushDescriptorSet() you must be using VK_VERSION_1_4. If you only enable VK_KHR_push_descriptor then you should use vkCmdPushDescriptorSetKHR()

Could you confirm which api version are you using?

[SSSS-VIII]

yes I did't use the VK_VERSION_1_4 , Im using 1_1 . the validation works well after I change my API version in the instance create. But it seems a problem that the validation cant point out this error

[spencer-lunarg]

But it seems a problem that the validation cant point out this error

You aren't the first who asked, I bet if you had VK_LOADER_DEBUG=all on it would have reported it

We have this back-and-forth discussion before, the issue is at some level we are a layer, this should be checked by the loader level. Also adding a if (!null) check around everything slowly adds cost for those apps that are calling a million functions a frame who don't need the check