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My application freezes on a call to glTexImage2D, this is the stack trace I get from the lldb: thread #3 frame #0: 0x00000001bb04d9b4 libsystem_kernel.dylib`mach_msg_trap + 8 frame #1: 0x00000001bb04dd60 libsystem_kernel.dylib`mach_msg + 76 frame #2: 0x00000001bdb28dd0 IOKit`io_connect_method + 440 frame #3: 0x00000001bdb28bec IOKit`IOConnectCallMethod + 236 frame #4: 0x00000001d5b1b970 IOGPU`IOGPUResourceCreate + 224 frame #5: 0x00000001d5b159f8 IOGPU`-[IOGPUMetalResource initWithDevice:remoteStorageResource:options:args:argsSize:] + 476 frame #6: 0x00000001d5b18ab8 IOGPU`-[IOGPUMetalTexture initWithBuffer:descriptor:sysMemOffset:sysMemRowBytes:vidMemSize:vidMemRowBytes:args:argsSize:isStrideTexture:] + 616 frame #7: 0x00000001d5b1925c IOGPU`-[IOGPUMetalTexture initWithPrimaryBuffer:heapIndex:bufferIndex:bufferOffset:length:descriptor:sysMemRowBytes:vidMemSize:vidMemRowBytes:args:argsSize:] + 96 frame #8: 0x000000021c45bc10 AGXMetal13_3`___lldb_unnamed_symbol4663$$AGXMetal13_3 + 468 frame #9: 0x0000000133953aa8 AppleMetalOpenGLRenderer`GLDTextureRec::loadObj() + 3156 frame #10: 0x000000013398a960 AppleMetalOpenGLRenderer`gldModifyTexSubImage + 160 frame #11: 0x000000021bd9a7e8 GLEngine`glTexImage2D_Exec + 1944 frame #12: 0x000000021bd7b8d0 libGL.dylib`glTexImage2D + 80 My questions are: how could a call to glTexImage2D freezes and cause the thread stuck forever? Why and how to solve it? Thank you in advance, and looking forward to any suggestions