Difference between revisions of "Development:Debugging Crash In Thunks"
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== Once Thunks are enabled == | == Once Thunks are enabled == | ||
* Once you've verified your crash is in a thunk then this becomes quite a bit easier | * Once you've verified your crash is in a thunk then this becomes quite a bit easier | ||
Latest revision as of 13:41, 22 June 2022
Once Thunks are enabled
- Once you've verified your crash is in a thunk then this becomes quite a bit easier
gdb --args FEXInterpreter /usr/bin/vulkaninfo Thread 1 "FEXInterpreter" received signal SIGSEGV, Segmentation fault. 0x0000007fc82240f4 in tu_CreateDevice () from /lib/aarch64-linux-gnu/libvulkan_freedreno.so (gdb) bt #0 0x0000007fc82240f4 in tu_CreateDevice () from /lib/aarch64-linux-gnu/libvulkan_freedreno.so #1 0x0000007fc8642b94 in function_traits<decltype (&(fexfn_unpack_libvulkan_freedreno_vkCreateDevice(fexfn_packed_args_libvulkan_freedreno_vkCreateDevice*)))>::result_t fexfn_type_erased_unpack<&(fexfn_unpack_libvulkan_freedreno_vkCreateDevice(fexfn_packed_args_libvulkan_freedreno_vkCreateDevice*))>(void*) () from /usr/lib/fex-emu/HostThunks//libvulkan_freedreno-host.so #2 0x0000007fe25e4028 in ?? () Backtrace stopped: previous frame inner to this frame (corrupt stack?)
- Okay, that's a direct crash in Turnip, let's rebuild Mesa with a debug build and try again
Thread 1 "FEXInterpreter" received signal SIGSEGV, Segmentation fault. 0x0000007fc80bc600 in tu_CreateDevice (physicalDevice=0x5559947aa0, pCreateInfo=0x7ff75fda20, pAllocator=0x0, pDevice=0x7fcbe7b358) at ../src/freedreno/vulkan/tu_device.c:1632 1632 memset(ptr, 0x42, 16); (gdb) bt #0 0x0000007fc80bc600 in tu_CreateDevice (physicalDevice=0x5559947aa0, pCreateInfo=0x7ff75fda20, pAllocator=0x0, pDevice=0x7fcbe7b358) at ../src/freedreno/vulkan/tu_device.c:1632 #1 0x0000007fc80eab9c in vk_tramp_CreateDevice (physicalDevice=0x5559947aa0, pCreateInfo=0x7ff75fda20, pAllocator=0x0, pDevice=0x7fcbe7b358) at src/vulkan/runtime/vk_dispatch_trampolines.c:78 #2 0x0000007fc8642b94 in function_traits<decltype (&(fexfn_unpack_libvulkan_freedreno_vkCreateDevice(fexfn_packed_args_libvulkan_freedreno_vkCreateDevice*)))>::result_t fexfn_type_erased_unpack<&(fexfn_unpack_libvulkan_freedreno_vkCreateDevice(fexfn_packed_args_libvulkan_freedreno_vkCreateDevice*))>(void*) () from /usr/lib/fex-emu/HostThunks//libvulkan_freedreno-host.so #3 0x0000007fe25e426c in ?? ()
- Okay the crash is at.. `tu_device:1632`, let's go and debug that line
1631 void* ptr = (void*)1; 1632 memset(ptr, 0x42, 16);
- Who put that in there?!