os/exec: fd leak on Plan 9 #7118
Description
What steps will reproduce the problem?
Run tests for os/exec.
What is the expected output? What do you see instead?
The TestExtraFiles test is failing because of leaked file descriptors.
cpu% cd src/pkg/os/exec; go test
--- FAIL: TestExtraFiles (0.20 seconds)
exec_test.go:234: TestExtraFiles: Something already leaked - closed fd 11
exec_test.go:407: Run: exit status: 'exec.test 1454466: 1'; stdout "leaked parent file. fd = 12; want 11\n", stderr ""
FAIL
exit status: 'exec.test 1454437: 1'
FAIL os/exec 1.364s
We can observe the following open file descriptors:
0 r c 0 (000000000000000a 0 00) 0 0 /dev/null\n
1 rw | 0 (0000000001df6742 0 00) 65536 54 #|/data1\n
2 rw | 0 (0000000001df6782 0 00) 65536 0 #|/data1
3 rw M 1956 (0000000000d66dd2 0 00) 8192 12 /tmp/333163398
4 r c 0 (0000000000000001 0 00) 0 528 /dev/bintime
5 r M 1956 (0000000000d66dd1 854 00) 8192 0 /tmp/go-build843954301/os/exec/_test/exec.test
6 r M 1956 (0000000000d66dd1 854 00) 8192 0 /tmp/go-build843954301/os/exec/_test/exec.test
7 r M 1956 (0000000000d66dd1 854 00) 8192 0 /tmp/go-build843954301/os/exec/_test/exec.test
8 r M 1956 (0000000000d66dd1 854 00) 8192 0 /tmp/go-build843954301/os/exec/_test/exec.test
9 r M 1956 (0000000000d66dd1 854 00) 8192 0 /tmp/go-build843954301/os/exec/_test/exec.test
10 r M 1956 (0000000000d66dd1 854 00) 8192 0 /tmp/go-build843954301/os/exec/_test/exec.test
11 r c 0 (000000000000000f 0 00) 0 32 /dev/random
12 r M 1956 (0000000000d66dd1 854 00) 8192 0 /tmp/go-build843954301/os/exec/_test/exec.test
13 r c 0 (000000000000000a 0 00) 0 0 /dev/null
14 rw | 0 (0000000001df6801 0 00) 65536 0 #|/data
15 rw | 0 (0000000001df6802 0 00) 65536 1275 #|/data1