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dmitshur opened this issue Jun 24, 2024 · 4 comments
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crypto/tls: frequent "connection reset by peer" failures in TestVerifyCertificates and other tests on freebsd/amd64 #68155

dmitshur opened this issue Jun 24, 2024 · 4 comments
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arch-amd64 NeedsFix The path to resolution is known, but the work has not been done. OS-FreeBSD
Milestone
Go1.23

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@dmitshur
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dmitshur commented Jun 24, 2024 •
edited by FiloSottile
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#!watchflakes
default <- pkg == "crypto/tls" && test ~ `^TestVerifyCertificates` && `connection reset by peer` && goos == "freebsd"

The legacy builders freebsd-amd64-13_0 and freebsd-amd64-12_3 are frequently failing with "connection reset by peer":

--- FAIL: TestTLS13OnlyClientHelloCipherSuite (0.00s)
    --- FAIL: TestTLS13OnlyClientHelloCipherSuite/empty (0.00s)
        handshake_test.go:425: failed to call cli.Close: close tcp 127.0.0.1:31660->127.0.0.1:64791: connection reset by peer
FAIL
FAIL	crypto/tls	0.431s

--- FAIL: TestTLS13OnlyClientHelloCipherSuite (0.00s)
    --- FAIL: TestTLS13OnlyClientHelloCipherSuite/empty (0.00s)
        handshake_test.go:425: failed to call cli.Close: close tcp 127.0.0.1:37916->127.0.0.1:34439: connection reset by peer
--- FAIL: TestVerifyCertificates (0.01s)
    --- FAIL: TestVerifyCertificates/TLSv13 (0.00s)
        --- FAIL: TestVerifyCertificates/TLSv13/RequireAndVerifyClientCert (0.01s)
            handshake_test.go:425: failed to call cli.Close: close tcp 127.0.0.1:24047->127.0.0.1:34439: connection reset by peer
FAIL
FAIL	crypto/tls	0.381s

For example, see https://build.golang.org/log/259c9ce4acb3f93875a3adf37010f03a1df21523 and https://build.golang.org/log/c3689aa19c83c931dcc6b89757f258dd3a4856f3.

(A builder for freebsd/amd64 isn't available in LUCI yet, see tracking issues #61094 and #61095.)

CC @golang/freebsd.
@dmitshur dmitshur added OS-FreeBSD NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. arch-amd64 labels Jun 24, 2024
@dmitshur dmitshur added this to the Backlog milestone Jun 24, 2024
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(Emoji vote if this was helpful or unhelpful; more detailed feedback welcome in this discussion.)

@joedian joedian added the NeedsFix The path to resolution is known, but the work has not been done. label Jun 26, 2024
@gopherbot gopherbot removed the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Jun 26, 2024
This was referenced Aug 1, 2024
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Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "crypto/tls" && test ~ `^TestVerifyCertificates` && `connection reset by peer` && goos == "freebsd"
2024-06-21 21:01 gotip-freebsd-riscv64 go@0af2148f crypto/tls.TestVerifyCertificates/TLSv12/RequestClientCert_with_no_certs (log) 
=== RUN   TestVerifyCertificates/TLSv12/RequestClientCert_with_no_certs
=== PAUSE TestVerifyCertificates/TLSv12/RequestClientCert_with_no_certs
=== CONT  TestVerifyCertificates/TLSv12/RequestClientCert_with_no_certs
    handshake_test.go:425: failed to call cli.Close: close tcp 127.0.0.1:64036->127.0.0.1:33107: connection reset by peer
--- FAIL: TestVerifyCertificates/TLSv12/RequestClientCert_with_no_certs (0.02s)
2024-06-25 14:29 gotip-freebsd-riscv64 go@b1fd0475 crypto/tls.TestVerifyCertificates/TLSv12/VerifyClientCertIfGiven_with_certs (log) 
=== RUN   TestVerifyCertificates/TLSv12/VerifyClientCertIfGiven_with_certs
=== PAUSE TestVerifyCertificates/TLSv12/VerifyClientCertIfGiven_with_certs
=== CONT  TestVerifyCertificates/TLSv12/VerifyClientCertIfGiven_with_certs
    handshake_test.go:495: failed to call cli.Close: close tcp 127.0.0.1:65153->127.0.0.1:31884: connection reset by peer
--- FAIL: TestVerifyCertificates/TLSv12/VerifyClientCertIfGiven_with_certs (0.26s)
2024-07-01 13:41 gotip-freebsd-riscv64 go@c33144c4 crypto/tls.TestVerifyCertificates/TLSv13/InsecureSkipVerify (log) 
=== RUN   TestVerifyCertificates/TLSv13/InsecureSkipVerify
=== PAUSE TestVerifyCertificates/TLSv13/InsecureSkipVerify
=== CONT  TestVerifyCertificates/TLSv13/InsecureSkipVerify
    handshake_test.go:495: failed to call cli.Close: close tcp 127.0.0.1:23059->127.0.0.1:11489: connection reset by peer
--- FAIL: TestVerifyCertificates/TLSv13/InsecureSkipVerify (0.05s)
2024-07-03 13:03 gotip-freebsd-riscv64 go@71f9dbb1 crypto/tls.TestVerifyCertificates/TLSv12/RequestClientCert_with_no_certs (log) 
=== RUN   TestVerifyCertificates/TLSv12/RequestClientCert_with_no_certs
=== PAUSE TestVerifyCertificates/TLSv12/RequestClientCert_with_no_certs
=== CONT  TestVerifyCertificates/TLSv12/RequestClientCert_with_no_certs
    handshake_test.go:495: failed to call cli.Close: close tcp 127.0.0.1:39020->127.0.0.1:43674: connection reset by peer
--- FAIL: TestVerifyCertificates/TLSv12/RequestClientCert_with_no_certs (0.04s)

— watchflakes

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Change https://go.dev/cl/602615 mentions this issue: crypto/tls: fix testHandshake close flakes

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Change https://go.dev/cl/602635 mentions this issue: [release-branch.go1.23] crypto/tls: fix testHandshake close flakes

gopherbot pushed a commit that referenced this issue Aug 2, 2024
@FiloSottile @gopherbot
[release-branch.go1.23] crypto/tls: fix testHandshake close flakes
7adb012 
The flakes were introduced by me in CL 586655. It's unclear why only
FreeBSD seems affected, maybe other TCP stacks handle sending on a
half-closed connection differently, or aren't as quick to propagate the
RST over localhost.

Updates #68155

Change-Id: I32a1b474a7d6531dbab93910c23568b867629e8c
Reviewed-on: https://go-review.googlesource.com/c/go/+/602635
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Cherry Mui <[email protected]>
Run-TryBot: Filippo Valsorda <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Auto-Submit: Filippo Valsorda <[email protected]>
Reviewed-by: Roland Shoemaker <[email protected]>
@dmitshur dmitshur modified the milestones: Backlog, Go1.23 Aug 7, 2024
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