67e0c1a750
allocated in a fork(2)-inheritable way at the beginning or end of an accept(2) system call. This test creates a test thread and blocks it in accept(2), then forks a child process which tests to see if the next available file descriptor is defined or not (EBADF vs EINVAL for ftruncate(2)). This detects a regression introduced during the network stack locking work, in which a very narrow race during which fork(2) from one thread during accept(2) in a second thread lead to an extra inherited file descriptor turned into a very wide race ensuring that a descriptor was leaked into the child even though it hadn't been returned. PR: kern/130348
$FreeBSD$ This directory tree contains tools used for the maintenance and testing of FreeBSD. There is no toplevel Makefile structure since these tools are not meant to be built as part of the standard system, though there may be individual Makefiles in some of the subdirs. Please read the README files in the subdirs for further information.