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TestSCTPConcurrentAccept is flaky #47

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meithecatte opened this issue Aug 20, 2020 · 1 comment
Open

TestSCTPConcurrentAccept is flaky #47

meithecatte opened this issue Aug 20, 2020 · 1 comment

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@meithecatte
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meithecatte commented Aug 20, 2020 •
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We're observing non-deterministic test failures on CI:

starting phase `check'
--- FAIL: TestSCTPConcurrentAccept (1.49s)
    sctp_test.go:117: # of failed Dials: 2
FAIL
FAIL    github.com/ishidawataru/sctp    5.824s
FAIL
command "go" "test" "github.com/ishidawataru/sctp" failed with status 1

The error in question is thrown away by the test, so I have introduced this patch as a test:

diff --git a/sctp_test.go b/sctp_test.go
index e58492e..e18059b 100644
--- a/sctp_test.go
+++ b/sctp_test.go
@@ -124,6 +124,7 @@ func TestSCTPConcurrentAccept(t *testing.T) {
        for i := 0; i < attempts; i++ {
                c, err := DialSCTP("sctp", nil, ln.Addr().(*SCTPAddr))
                if err != nil {
+                       t.Fatal(err)
                        fails++
                } else {
                        c.Close()

This results in

starting phase `check'
--- FAIL: TestSCTPConcurrentAccept (0.28s)
    sctp_test.go:108: transport endpoint is already connected
FAIL
FAIL    github.com/ishidawataru/sctp    4.166s
FAIL
command "go" "test" "github.com/ishidawataru/sctp" failed with status 1

I also got it to deadlock once:

starting phase `check'
--- FAIL: TestSCTPConcurrentAccept (0.75s)
    sctp_test.go:117: # of failed Dials: 1
panic: test timed out after 10m0s

goroutine 313 [running]:
testing.(*M).startAlarm.func1()
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/testing/testing.go:1459 +0xdf
created by time.goFunc
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/time/sleep.go:168 +0x44

goroutine 1 [chan receive, 9 minutes]:
testing.(*T).Run(0xc00014c6c0, 0x5a508f, 0x11, 0x5ad5c0, 0x47f500)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/testing/testing.go:1043 +0x37e
testing.runTests.func1(0xc00014c000)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/testing/testing.go:1284 +0x78
testing.tRunner(0xc00014c000, 0xc000046e10)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/testing/testing.go:991 +0xdc
testing.runTests(0xc00012c040, 0x6e01a0, 0x6, 0x6, 0x0)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/testing/testing.go:1282 +0x2a7
testing.(*M).Run(0xc000148000, 0x0)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/testing/testing.go:1199 +0x15f
main.main()
	_testmain.go:54 +0x135

goroutine 311 [chan receive, 9 minutes]:
github.com/ishidawataru/sctp.TestSCTPCloseRecv(0xc00014c6c0)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:153 +0x2c5
testing.tRunner(0xc00014c6c0, 0x5ad5c0)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/testing/testing.go:991 +0xdc
created by testing.(*T).Run
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/testing/testing.go:1042 +0x357

goroutine 20 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0x7, 0xc000034688, 0xc00003466c, 0x0, 0x0, 0x0, 0xc0007ef840, 0xc00003466c, 0x0)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0x7, 0xc000034688, 0xc00003466c, 0x0, 0x300000002, 0xc000106600, 0xc000034690)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0x7, 0x0, 0x43f84e, 0xc000034738, 0x463fb0, 0xc000034780, 0xc000034788)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).Accept(0xc00011e3a0, 0x5ad5e0, 0xc00018f4d0, 0xc00014c120, 0x0)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:171 +0x3b
github.com/ishidawataru/sctp.TestStreams.func2(0xc00011e3a0, 0xc00014c120)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_streams_test.go:41 +0x74
created by github.com/ishidawataru/sctp.TestStreams
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_streams_test.go:39 +0x409

goroutine 308 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0xb, 0xc000341ea8, 0xc000341e8c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0xb, 0xc000341ea8, 0xc000341e8c, 0x0, 0x43f37f, 0xc000031800, 0xc000341eb8)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0xb, 0x0, 0x0, 0x0, 0xc0009662a0, 0x0, 0x5d6c20)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).Accept(0xc00011fe60, 0x0, 0x0, 0x0, 0x0)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:171 +0x3b
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc00011fe60, 0xc00011fe70)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:94 +0x37
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:92 +0x180

goroutine 161 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0xb, 0xc0005b8ea8, 0xc0005b8e8c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0xb, 0xc0005b8ea8, 0xc0005b8e8c, 0x0, 0x43f37f, 0xc00002c800, 0xc0005b8eb8)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0xb, 0x0, 0x0, 0x0, 0xc0008f3840, 0x0, 0x5d6c20)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).Accept(0xc00011fe60, 0x0, 0x0, 0x0, 0x0)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:171 +0x3b
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc00011fe60, 0xc00011fe70)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:94 +0x37
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:92 +0x180

goroutine 309 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0xb, 0xc0001caea8, 0xc0001cae8c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0xb, 0xc0001caea8, 0xc0001cae8c, 0x0, 0x43f37f, 0xc000031800, 0xc0001caeb8)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0xb, 0x0, 0x0, 0x0, 0xc0008f3420, 0x0, 0x5d6c20)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).Accept(0xc00011fe60, 0x0, 0x0, 0x0, 0x0)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:171 +0x3b
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc00011fe60, 0xc00011fe70)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:94 +0x37
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:92 +0x180

goroutine 307 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0xb, 0xc00004cea8, 0xc00004ce8c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0xb, 0xc00004cea8, 0xc00004ce8c, 0x0, 0x43f37f, 0xc000031800, 0xc00004ceb8)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0xb, 0x0, 0x0, 0x0, 0xc000966480, 0x0, 0x5d6c20)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).Accept(0xc00011fe60, 0x0, 0x0, 0x0, 0x0)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:171 +0x3b
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc00011fe60, 0xc00011fe70)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:94 +0x37
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:92 +0x180

goroutine 310 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0xb, 0xc000048ea8, 0xc000048e8c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0xb, 0xc000048ea8, 0xc000048e8c, 0x0, 0x43f35b, 0xc000048e88, 0x10000c000048eb8)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0xb, 0x0, 0x0, 0x0, 0xc000966420, 0x0, 0x5d6c20)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).Accept(0xc00011fe60, 0x0, 0x0, 0x0, 0x0)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:171 +0x3b
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc00011fe60, 0xc00011fe70)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:94 +0x37
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:92 +0x180

goroutine 312 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0xb, 0xc00003ae48, 0xc00003ae2c, 0x0, 0x0, 0x0, 0x5d88a0, 0xc00011e010, 0x5a25f6)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0xb, 0xc00003ae48, 0xc00003ae2c, 0x0, 0x545a42, 0x5a25f6, 0x3)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0xb, 0x0, 0x5490b6, 0x5a2755, 0x4, 0x5a3afb, 0xb)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).Accept(0xc0000633e0, 0x5f3eb499, 0xc00003af70, 0x47f506, 0x5f3eb499)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:171 +0x3b
github.com/ishidawataru/sctp.TestSCTPCloseRecv.func1(0xc0000633f0, 0xc0000633e0, 0xc0000950c0, 0xc00014c6c0, 0xc000103ce0)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:135 +0x5d
created by github.com/ishidawataru/sctp.TestSCTPCloseRecv
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:132 +0x1d4

goroutine 306 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0xb, 0xc00070cea8, 0xc00070ce8c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0xb, 0xc00070cea8, 0xc00070ce8c, 0x0, 0x43f37f, 0xc000031800, 0xc00070ceb8)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0xb, 0x0, 0x0, 0x0, 0xc0009666e0, 0x0, 0x5d6c20)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).Accept(0xc00011fe60, 0x0, 0x0, 0x0, 0x0)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:171 +0x3b
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc00011fe60, 0xc00011fe70)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:94 +0x37
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:92 +0x180

goroutine 159 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0xb, 0xc000787ea8, 0xc000787e8c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0xb, 0xc000787ea8, 0xc000787e8c, 0x0, 0x43f37f, 0xc000031800, 0xc000787eb8)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0xb, 0x0, 0x0, 0x0, 0xc000966540, 0x0, 0x5d6c20)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).Accept(0xc00011fe60, 0x0, 0x0, 0x0, 0x0)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:171 +0x3b
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc00011fe60, 0xc00011fe70)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:94 +0x37
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:92 +0x180

goroutine 160 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0xb, 0xc0003a7ea8, 0xc0003a7e8c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0xb, 0xc0003a7ea8, 0xc0003a7e8c, 0x0, 0x43f35b, 0xc0003a7e88, 0x10000c0003a7eb8)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0xb, 0x0, 0x0, 0x0, 0xc00007e780, 0x0, 0x5d6c20)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).Accept(0xc00011fe60, 0x0, 0x0, 0x0, 0x0)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:171 +0x3b
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc00011fe60, 0xc00011fe70)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:94 +0x37
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:92 +0x180

goroutine 157 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0xb, 0xc00056fea8, 0xc00056fe8c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0xb, 0xc00056fea8, 0xc00056fe8c, 0x0, 0x43f37f, 0xc00002c800, 0xc00056feb8)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0xb, 0x0, 0x0, 0x0, 0xc0008f38a0, 0x0, 0x5d6c20)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).Accept(0xc00011fe60, 0x0, 0x0, 0x0, 0x0)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:171 +0x3b
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc00011fe60, 0xc00011fe70)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:94 +0x37
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:92 +0x180

goroutine 158 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0xb, 0xc000387ea8, 0xc000387e8c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0xb, 0xc000387ea8, 0xc000387e8c, 0x0, 0x43f37f, 0xc000031800, 0xc000387eb8)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0xb, 0x0, 0x0, 0x0, 0xc00007e7e0, 0x0, 0x5d6c20)
	/gnu/store/6458fbhykzfhc403j1h8gxss01wjh756-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).Accept(0xc00011fe60, 0x0, 0x0, 0x0, 0x0)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:171 +0x3b
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc00011fe60, 0xc00011fe70)
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:94 +0x37
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
	/tmp/guix-build-go-sctp-0.0.0-1.07191f8.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:92 +0x180
FAIL	github.com/ishidawataru/sctp	600.010s
FAIL
command "go" "test" "github.com/ishidawataru/sctp" failed with status 1

starting phase `check'
panic: test timed out after 10m0s

goroutine 590 [running]:
testing.(*M).startAlarm.func1()
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/testing/testing.go:1459 +0xdf
created by time.goFunc
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/time/sleep.go:168 +0x44

goroutine 1 [chan receive, 9 minutes]:
testing.(*T).Run(0xc0000ea6c0, 0x5a73ef, 0x11, 0x5af938, 0x47f501)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/testing/testing.go:1043 +0x37e
testing.runTests.func1(0xc0000ea000)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/testing/testing.go:1284 +0x78
testing.tRunner(0xc0000ea000, 0xc000095e10)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/testing/testing.go:991 +0xdc
testing.runTests(0xc00000e080, 0x6e4280, 0x6, 0x6, 0x0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/testing/testing.go:1282 +0x2a7
testing.(*M).Run(0xc0000e6000, 0x0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/testing/testing.go:1199 +0x15f
main.main()
        _testmain.go:54 +0x135

goroutine 595 [chan receive, 9 minutes]:
github.com/ishidawataru/sctp.TestSCTPCloseRecv(0xc0000ea6c0)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:158 +0x2de
testing.tRunner(0xc0000ea6c0, 0x5af938)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/testing/testing.go:991 +0xdc
created by testing.(*T).Run
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/testing/testing.go:1042 +0x357

goroutine 7 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0x7, 0xc000084688, 0xc00008466c, 0x0, 0x0, 0x0, 0xc000466080, 0xc00008466c, 0x0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0x7, 0xc000084688, 0xc00008466c, 0x0, 0x300000002, 0xc000001b00, 0xc000084690)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0x7, 0x0, 0x43f84e, 0xc000084738, 0x463fb0, 0xc000084780, 0xc000084788)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).AcceptSCTP(0xc0000283e0, 0x5af958, 0xc0007020b0, 0xc0000ea120)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:173 +0x3b
github.com/ishidawataru/sctp.(*SCTPListener).Accept(...)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:179
github.com/ishidawataru/sctp.TestStreams.func2(0xc0000283e0, 0xc0000ea120)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_streams_test.go:41 +0x75
created by github.com/ishidawataru/sctp.TestStreams
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_streams_test.go:39 +0x412

goroutine 144 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0x8, 0xc000639eb0, 0xc000639e94, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0x8, 0xc000639eb0, 0xc000639e94, 0x0, 0x43f37f, 0xc00002e800, 0xc000639ec0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0x8, 0x0, 0x0, 0x0, 0xc000587600, 0x0, 0x5d93c0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).AcceptSCTP(0xc000506220, 0x0, 0x0, 0x0)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:173 +0x3b
github.com/ishidawataru/sctp.(*SCTPListener).Accept(...)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:179
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc000506220, 0xc000506230)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:98 +0x40
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:96 +0x18d

goroutine 138 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0x8, 0xc000924eb0, 0xc000924e94, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0x8, 0xc000924eb0, 0xc000924e94, 0x0, 0x43f37f, 0xc000031000, 0xc000924ec0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0x8, 0x0, 0x0, 0x0, 0xc000934da0, 0x0, 0x5d93c0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).AcceptSCTP(0xc000506220, 0x0, 0x0, 0x0)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:173 +0x3b
github.com/ishidawataru/sctp.(*SCTPListener).Accept(...)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:179
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc000506220, 0xc000506230)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:98 +0x40
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:96 +0x18d

goroutine 141 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0x8, 0xc0004fceb0, 0xc0004fce94, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0x8, 0xc0004fceb0, 0xc0004fce94, 0x0, 0x43f37f, 0xc000031000, 0xc0004fcec0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0x8, 0x0, 0x0, 0x0, 0xc000935100, 0x0, 0x5d93c0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).AcceptSCTP(0xc000506220, 0x0, 0x0, 0x0)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:173 +0x3b
github.com/ishidawataru/sctp.(*SCTPListener).Accept(...)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:179
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc000506220, 0xc000506230)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:98 +0x40
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:96 +0x18d

goroutine 596 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0x8, 0xc00019fe48, 0xc00019fe2c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0x8, 0xc00019fe48, 0xc00019fe2c, 0x0, 0x0, 0x0, 0x0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0x8, 0x0, 0x100000081, 0x0, 0x0, 0x0, 0x0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).AcceptSCTP(0xc00060f740, 0x5afe70, 0xc000d96100, 0xc00019ffc8)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:173 +0x3b
github.com/ishidawataru/sctp.(*SCTPListener).Accept(...)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:179
github.com/ishidawataru/sctp.TestSCTPCloseRecv.func1(0xc00060f750, 0xc00060f740, 0xc0002863e0, 0xc0000ea6c0, 0xc000a8c240)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:140 +0x5d
created by github.com/ishidawataru/sctp.TestSCTPCloseRecv
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:137 +0x1e4

goroutine 142 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0x8, 0xc000d98eb0, 0xc000d98e94, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0x8, 0xc000d98eb0, 0xc000d98e94, 0x0, 0x43f37f, 0xc00002c000, 0xc000d98ec0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0x8, 0x0, 0x0, 0x0, 0xc0006a0f20, 0x0, 0x5d93c0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).AcceptSCTP(0xc000506220, 0x0, 0x0, 0x0)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:173 +0x3b
github.com/ishidawataru/sctp.(*SCTPListener).Accept(...)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:179
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc000506220, 0xc000506230)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:98 +0x40
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:96 +0x18d

goroutine 145 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0x8, 0xc000d99eb0, 0xc000d99e94, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0x8, 0xc000d99eb0, 0xc000d99e94, 0x0, 0x43f37f, 0xc000033800, 0xc000d99ec0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0x8, 0x0, 0x0, 0x0, 0xc0006f71c0, 0x0, 0x5d93c0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).AcceptSCTP(0xc000506220, 0x0, 0x0, 0x0)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:173 +0x3b
github.com/ishidawataru/sctp.(*SCTPListener).Accept(...)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:179
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc000506220, 0xc000506230)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:98 +0x40
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:96 +0x18d

goroutine 143 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0x8, 0xc0004fbeb0, 0xc0004fbe94, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0x8, 0xc0004fbeb0, 0xc0004fbe94, 0x0, 0x43f37f, 0xc00002e800, 0xc0004fbec0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0x8, 0x0, 0x0, 0x0, 0xc000587480, 0x0, 0x5d93c0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).AcceptSCTP(0xc000506220, 0x0, 0x0, 0x0)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:173 +0x3b
github.com/ishidawataru/sctp.(*SCTPListener).Accept(...)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:179
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc000506220, 0xc000506230)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:98 +0x40
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:96 +0x18d

goroutine 626 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0x8, 0xc000c2aeb0, 0xc000c2ae94, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0x8, 0xc000c2aeb0, 0xc000c2ae94, 0x0, 0x43f37f, 0xc000031000, 0xc000c2aec0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0x8, 0x0, 0x0, 0x0, 0xc000935160, 0x0, 0x5d93c0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).AcceptSCTP(0xc000506220, 0x0, 0x0, 0x0)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:173 +0x3b
github.com/ishidawataru/sctp.(*SCTPListener).Accept(...)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:179
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc000506220, 0xc000506230)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:98 +0x40
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:96 +0x18d

goroutine 627 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0x8, 0xc000e94eb0, 0xc000e94e94, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0x8, 0xc000e94eb0, 0xc000e94e94, 0x0, 0x43f37f, 0xc00002e800, 0xc000e94ec0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0x8, 0x0, 0x0, 0x0, 0xc0005874e0, 0x0, 0x5d93c0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).AcceptSCTP(0xc000506220, 0x0, 0x0, 0x0)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:173 +0x3b
github.com/ishidawataru/sctp.(*SCTPListener).Accept(...)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:179
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc000506220, 0xc000506230)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:98 +0x40
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:96 +0x18d

goroutine 139 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0x8, 0xc000b3beb0, 0xc000b3be94, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0x8, 0xc000b3beb0, 0xc000b3be94, 0x0, 0x43f37f, 0xc00002e800, 0xc000b3bec0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0x8, 0x0, 0x0, 0x0, 0xc0005875a0, 0x0, 0x5d93c0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).AcceptSCTP(0xc000506220, 0x0, 0x0, 0x0)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:173 +0x3b
github.com/ishidawataru/sctp.(*SCTPListener).Accept(...)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:179
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc000506220, 0xc000506230)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:98 +0x40
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:96 +0x18d

goroutine 140 [syscall, 9 minutes]:
syscall.Syscall6(0x120, 0x8, 0xc0006c3eb0, 0xc0006c3e94, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/asm_linux_amd64.s:41 +0x5
syscall.accept4(0x8, 0xc0006c3eb0, 0xc0006c3e94, 0x0, 0x43f37f, 0xc000031000, 0xc0006c3ec0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/zsyscall_linux_amd64.go:1444 +0x7b
syscall.Accept4(0x8, 0x0, 0x0, 0x0, 0xc0009349c0, 0x0, 0x5d93c0)
        /gnu/store/mq5mv1l7r2fgdfakwgqmxhf3gp4dx3wv-go-1.14.4/src/syscall/syscall_linux.go:533 +0x88
github.com/ishidawataru/sctp.(*SCTPListener).AcceptSCTP(0xc000506220, 0x0, 0x0, 0x0)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:173 +0x3b
github.com/ishidawataru/sctp.(*SCTPListener).Accept(...)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_linux.go:179
github.com/ishidawataru/sctp.TestSCTPConcurrentAccept.func1(0xc000506220, 0xc000506230)
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:98 +0x40
created by github.com/ishidawataru/sctp.TestSCTPConcurrentAccept
        /tmp/guix-build-go-sctp-0.0.0-1.6e2cb13.drv-0/src/github.com/ishidawataru/sctp/sctp_test.go:96 +0x18d
FAIL    github.com/ishidawataru/sctp    600.019s
FAIL
command "go" "test" "github.com/ishidawataru/sctp" failed with status 1

I am not sure what the best way to debug this is, but it seems to be pointing at some deeper issue in the code.
@AnshulGunde
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Hi,

I am also facing "transport endpoint is already connected". It seems that this problem is coming with go version 1.14.4.
We have never faced this issue with 1.12.7 go version.

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@meithecatte @AnshulGunde