Starting a bunch of goroutines...

acquirep: p->m=842351149056(5) p->status=1
fatal error: acquirep: invalid p state

runtime stack:
runtime.throw(0x4c0ab3, 0x19)
        /home/derek/go/src/github.com/golang/go/src/runtime/panic.go:566 +0x8b
runtime.acquirep1(0xc420019500)
        /home/derek/go/src/github.com/golang/go/src/runtime/proc.go:3401 +0x15d
runtime.acquirep(0xc420019500)
        /home/derek/go/src/github.com/golang/go/src/runtime/proc.go:3376 +0x21
runtime.findrunnable(0xc42001aa00, 0x0)
        /home/derek/go/src/github.com/golang/go/src/runtime/proc.go:1966 +0x432
runtime.schedule()
        /home/derek/go/src/github.com/golang/go/src/runtime/proc.go:2102 +0x139
runtime.goexit0(0xc420182340)
        /home/derek/go/src/github.com/golang/go/src/runtime/proc.go:2239 +0x172
runtime.mcall(0x0)
        /home/derek/go/src/github.com/golang/go/src/runtime/asm_amd64.s:240 +0x5b

goroutine 1 [chan receive]:
main.main()
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:62 +0x181

goroutine 17444693 [runnable]:
syscall.Syscall(0x6, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0)
        /home/derek/go/src/github.com/golang/go/src/syscall/asm_freebsd_amd64.s:21 +0x5
syscall.Close(0x4, 0xc420180bd8, 0x8)
        /home/derek/go/src/github.com/golang/go/src/syscall/zsyscall_freebsd_amd64.go:384 +0x40
syscall.forkExec(0xc42026c090, 0xd, 0xc420415fe0, 0x1, 0x1, 0xc420180d70, 0xc42002a400, 0x4c772c, 0x80051a770)
        /home/derek/go/src/github.com/golang/go/src/syscall/exec_unix.go:203 +0x3c4
syscall.StartProcess(0xc42026c090, 0xd, 0xc420415fe0, 0x1, 0x1, 0xc420180d70, 0x2, 0x4, 0xc42004fa00, 0x0)
        /home/derek/go/src/github.com/golang/go/src/syscall/exec_unix.go:240 +0x53
os.startProcess(0xc42026c090, 0xd, 0xc420415fe0, 0x1, 0x1, 0xc420180f08, 0xc4204d8240, 0x11, 0x11)
        /home/derek/go/src/github.com/golang/go/src/os/exec_posix.go:45 +0x186
os.StartProcess(0xc42026c090, 0xd, 0xc420415fe0, 0x1, 0x1, 0xc420180f08, 0x0, 0x0, 0xc42026c090)
        /home/derek/go/src/github.com/golang/go/src/os/doc.go:28 +0x53
os/exec.(*Cmd).Start(0xc4201db180, 0x4, 0x0)
        /home/derek/go/src/github.com/golang/go/src/os/exec/exec.go:342 +0x393
main.run(0xc42006e060)
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:39 +0x5e
created by main.main
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:63 +0x1a3

goroutine 17444608 [runnable]:
path/filepath.Base(0x4bdacd, 0x4, 0x0, 0x0)
        /home/derek/go/src/github.com/golang/go/src/path/filepath/path.go:419
os/exec.Command(0x4bdacd, 0x4, 0x0, 0x0, 0x0, 0xc4200a7e00)
        /home/derek/go/src/github.com/golang/go/src/os/exec/exec.go:132 +0x16b
main.run(0xc42006e060)
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:38 +0x4b
created by main.main
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:63 +0x1a3

goroutine 17444654 [runnable]:
path/filepath.Base(0x4bdacd, 0x4, 0x0, 0x0)
        /home/derek/go/src/github.com/golang/go/src/path/filepath/path.go:419
os/exec.Command(0x4bdacd, 0x4, 0x0, 0x0, 0x0, 0xc4202e97c0)
        /home/derek/go/src/github.com/golang/go/src/os/exec/exec.go:132 +0x16b
main.run(0xc42006e060)
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:38 +0x4b
created by main.main
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:63 +0x1a3

goroutine 17444653 [runnable]:
syscall.Syscall(0x6, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0)
        /home/derek/go/src/github.com/golang/go/src/syscall/asm_freebsd_amd64.s:21 +0x5
syscall.Close(0x3, 0xc42044afb8, 0x0)
        /home/derek/go/src/github.com/golang/go/src/syscall/zsyscall_freebsd_amd64.go:384 +0x40
os.(*file).close(0xc42044af20, 0xd, 0xc4204cac30)
        /home/derek/go/src/github.com/golang/go/src/os/file_unix.go:139 +0x77
os.(*File).Close(0xc420368ef8, 0xc420295f08, 0xc4201efb40)
        /home/derek/go/src/github.com/golang/go/src/os/file_unix.go:131 +0x29
os/exec.(*Cmd).closeDescriptors(0xc4202e97c0, 0xc42044de40, 0x3, 0x4)
        /home/derek/go/src/github.com/golang/go/src/os/exec/exec.go:246 +0x3f
os/exec.(*Cmd).Start(0xc4202e97c0, 0x4, 0x0)
        /home/derek/go/src/github.com/golang/go/src/os/exec/exec.go:349 +0x40c
main.run(0xc42006e060)
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:39 +0x5e
created by main.main
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:63 +0x1a3

goroutine 17444635 [runnable]:
syscall.Syscall(0x5c, 0x3, 0x2, 0x1, 0x0, 0x1, 0x0)
        /home/derek/go/src/github.com/golang/go/src/syscall/asm_freebsd_amd64.s:21 +0x5
syscall.fcntl(0x3, 0x2, 0x1, 0x0, 0x0, 0xc4c0000000)
        /home/derek/go/src/github.com/golang/go/src/syscall/zsyscall_freebsd_amd64.go:255 +0x42
syscall.forkExecPipe(0xc420294c28, 0x2, 0x2, 0xc4204e4900, 0x12)
        /home/derek/go/src/github.com/golang/go/src/syscall/exec_bsd.go:264 +0x7d
syscall.forkExec(0xc4204e68a0, 0xd, 0xc4204e67f0, 0x1, 0x1, 0xc420294d70, 0xc42011b400, 0x4c772c, 0x80051b0d0)
        /home/derek/go/src/github.com/golang/go/src/syscall/exec_unix.go:188 +0x271
syscall.StartProcess(0xc4204e68a0, 0xd, 0xc4204e67f0, 0x1, 0x1, 0xc420294d70, 0x2, 0x4, 0xc420384680, 0x1)
        /home/derek/go/src/github.com/golang/go/src/syscall/exec_unix.go:240 +0x53
os.startProcess(0xc4204e68a0, 0xd, 0xc4204e67f0, 0x1, 0x1, 0xc420294f08, 0xc4204e26c0, 0x11, 0x11)
        /home/derek/go/src/github.com/golang/go/src/os/exec_posix.go:45 +0x186
os.StartProcess(0xc4204e68a0, 0xd, 0xc4204e67f0, 0x1, 0x1, 0xc420294f08, 0x0, 0x0, 0xc4204e68a0)
        /home/derek/go/src/github.com/golang/go/src/os/doc.go:28 +0x53
os/exec.(*Cmd).Start(0xc420407900, 0x4, 0x0)
        /home/derek/go/src/github.com/golang/go/src/os/exec/exec.go:342 +0x393
main.run(0xc42006e060)
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:39 +0x5e
created by main.main
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:63 +0x1a3

goroutine 17444723 [runnable]:
os/exec.(*Cmd).Start(0xc42026e000, 0x4, 0x0)
        /home/derek/go/src/github.com/golang/go/src/os/exec/exec.go:332 +0x6d6
main.run(0xc42006e060)
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:39 +0x5e
created by main.main
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:63 +0x1a3

goroutine 17444708 [runnable]:
syscall.Syscall6(0x7, 0x149c5, 0xc42017fdd4, 0x0, 0xc4204ec510, 0x0, 0x0, 0x149c5, 0x0, 0x0)
        /home/derek/go/src/github.com/golang/go/src/syscall/asm_freebsd_amd64.s:44 +0x5
syscall.wait4(0x149c5, 0xc42017fdd4, 0x0, 0xc4204ec510, 0x90, 0x4b7540, 0x1)
        /home/derek/go/src/github.com/golang/go/src/syscall/zsyscall_freebsd_amd64.go:34 +0x7b
syscall.Wait4(0x149c5, 0xc42017fe1c, 0x0, 0xc4204ec510, 0xc420505130, 0x45a9f0, 0x49e8c0)
        /home/derek/go/src/github.com/golang/go/src/syscall/syscall_bsd.go:129 +0x47
os.(*Process).wait(0xc4202dfee0, 0x0, 0x3, 0x0)
        /home/derek/go/src/github.com/golang/go/src/os/exec_unix.go:22 +0xd9
os.(*Process).Wait(0xc4202dfee0, 0x0, 0x0, 0x0)
        /home/derek/go/src/github.com/golang/go/src/os/doc.go:49 +0x21
os/exec.(*Cmd).WaitContext(0xc420307900, 0x0, 0x0, 0x4, 0x0)
        /home/derek/go/src/github.com/golang/go/src/os/exec/exec.go:424 +0x75
os/exec.(*Cmd).Wait(0xc420307900, 0x0, 0x0)
        /home/derek/go/src/github.com/golang/go/src/os/exec/exec.go:399 +0x33
main.run(0xc42006e060)
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:43 +0xb2
created by main.main
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:63 +0x1a3

goroutine 17444683 [runnable]:
syscall.Syscall(0x6, 0x6, 0x0, 0x0, 0x0, 0x0, 0x0)
        /home/derek/go/src/github.com/golang/go/src/syscall/asm_freebsd_amd64.s:21 +0x5
syscall.Close(0x6, 0xc42050dbd8, 0x8)
        /home/derek/go/src/github.com/golang/go/src/syscall/zsyscall_freebsd_amd64.go:384 +0x40
syscall.forkExec(0xc42043b310, 0xd, 0xc42043b260, 0x1, 0x1, 0xc42050dd70, 0xc42011ac00, 0x4c772c, 0x800519e10)
        /home/derek/go/src/github.com/golang/go/src/syscall/exec_unix.go:203 +0x3c4
syscall.StartProcess(0xc42043b310, 0xd, 0xc42043b260, 0x1, 0x1, 0xc42050dd70, 0x2, 0x4, 0xc4202644e0, 0x0)
        /home/derek/go/src/github.com/golang/go/src/syscall/exec_unix.go:240 +0x53
os.startProcess(0xc42043b310, 0xd, 0xc42043b260, 0x1, 0x1, 0xc42050df08, 0xc4201e30e0, 0x11, 0x11)
        /home/derek/go/src/github.com/golang/go/src/os/exec_posix.go:45 +0x186
os.StartProcess(0xc42043b310, 0xd, 0xc42043b260, 0x1, 0x1, 0xc42050df08, 0x0, 0x0, 0xc42043b310)
        /home/derek/go/src/github.com/golang/go/src/os/doc.go:28 +0x53
os/exec.(*Cmd).Start(0xc4204ee3c0, 0x4, 0x0)
        /home/derek/go/src/github.com/golang/go/src/os/exec/exec.go:342 +0x393
main.run(0xc42006e060)
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:39 +0x5e
created by main.main
        /home/derek/dev/crashgo/src/cmd/crashgo/main.go:63 +0x1a3