Reported on macOS 10.12, this message appears as follows: UNKNOWN task message [id 3444, to mach_task_self(), reply 0x603] UNKNOWN task message [id 3444, to mach_task_self(), reply 0x603] (repeated 2 times) UNKNOWN task message [id 3444, to mach_task_self(), reply 0x603] (repeated 4 times) etc The interface is identified as follows on macOS 10.12: $ grep -r 3444 /usr/include/mach /usr/include/mach/task.h: { "task_register_dyld_image_infos", 3444 },\ Reproducible: Always Steps to Reproduce: 1. ./vg-in-place -d true Actual Results: In output: UNKNOWN task message [id 3444, to mach_task_self(), reply 0x603]
Resolved in r16327.