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runtime,testing: FATAL: ThreadSanitizer CHECK failed: ./gotsan.cpp:6945 "((kBlockMagic)) == ((((u64*)addr)[0]))" #35906

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runtime,testing: FATAL: ThreadSanitizer CHECK failed: ./gotsan.cpp:6945 "((kBlockMagic)) == ((((u64*)addr)[0]))"#35906
Labels
FrozenDueToAgeNeedsInvestigationSomeone must examine and confirm this is a valid issue and not a duplicate of an existing one.release-blocker
Milestone
Go1.14

Description

@cuonglm
cuonglm
opened on Nov 29, 2019

What version of Go are you using (go version)?

$ go version
go version devel +8054b13536 Thu Nov 28 15:16:27 2019 +0000 darwin/amd64

Does this issue reproduce with the latest release?

No

What operating system and processor architecture are you using (go env)?

go env Output
$ go env
GO111MODULE="off"
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/cuonglm/Library/Caches/go-build"
GOENV="/Users/cuonglm/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOINSECURE=""
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/cuonglm/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/Users/cuonglm/sources/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/Users/cuonglm/sources/go/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/y4/hs76ltbn7sb66lw_6934kq4m0000gn/T/go-build276429327=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

$ go get -d github.com/loadimpact/k6
$ cd $GOPATH/src/github.com/loadimpact/k6/stats/csv
$ go test -count=10 -race

What did you expect to see?

Test passes.

What did you see instead?

FATAL: ThreadSanitizer CHECK failed: ./gotsan.cpp:6945 "((kBlockMagic)) == ((((u64*)addr)[0]))" (0x6a6cb03abcebc041, 0x1096b02)
exit status 66
FAIL	github.com/loadimpact/k6/stats/csv	1.426s

cc @ianlancetaylor

Activity

  1. agnivade
    added
    NeedsInvestigationSomeone must examine and confirm this is a valid issue and not a duplicate of an existing one.
    release-blocker
    on Nov 30, 2019
  2. agnivade
    added this to the Go1.14 milestone on Nov 30, 2019

  3. cuonglm commented on Dec 2, 2019

    @cuonglm
    cuonglm
    on Dec 2, 2019
    MemberAuthor

    Another error:

    $ go test -count=2 -race
fatal error: unexpected signal during runtime execution
[signal SIGSEGV: segmentation violation code=0x1 addr=0x32ffb60 pc=0x1024e20]

runtime stack:
runtime.throw(0x195de24, 0x2a)
	/Users/cuonglm/sources/go/src/runtime/panic.go:1106 +0x72
runtime.sigpanic()
	/Users/cuonglm/sources/go/src/runtime/signal_unix.go:661 +0x46a

goroutine 1 [chan receive]:
testing.(*T).Run(0xc0001565a0, 0x194ef84, 0xe, 0x1a307d0, 0x1)
	/Users/cuonglm/sources/go/src/testing/testing.go:1006 +0x699
testing.runTests.func1(0xc0001565a0)
	/Users/cuonglm/sources/go/src/testing/testing.go:1247 +0xa7
testing.tRunner(0xc0001565a0, 0xc00012fd50)
	/Users/cuonglm/sources/go/src/testing/testing.go:954 +0x1ec
testing.runTests(0xc000136940, 0x20dfa40, 0xb, 0xb, 0x0)
	/Users/cuonglm/sources/go/src/testing/testing.go:1245 +0x528
testing.(*M).Run(0xc0001d6100, 0x0)
	/Users/cuonglm/sources/go/src/testing/testing.go:1162 +0x300
main.main()
	_testmain.go:64 +0x224

goroutine 33 [select]:
github.com/loadimpact/k6/stats/csv.(*Collector).Run(0xc00014f900, 0x1b05fa0, 0xc000162cc0)
	/Users/cuonglm/go/src/github.com/loadimpact/k6/stats/csv/collector.go:128 +0x160
github.com/loadimpact/k6/stats/csv.TestRunCollect.func1(0xc00014f900, 0x1b05fa0, 0xc000162cc0, 0xc00049b6a0)
	/Users/cuonglm/go/src/github.com/loadimpact/k6/stats/csv/collector_test.go:281 +0x4d
created by github.com/loadimpact/k6/stats/csv.TestRunCollect
	/Users/cuonglm/go/src/github.com/loadimpact/k6/stats/csv/collector_test.go:280 +0xc60

goroutine 32 [sleep]:
time.Sleep(0x3b9aca00)
	/Users/cuonglm/sources/go/src/runtime/time.go:193 +0xba
github.com/loadimpact/k6/stats/csv.TestRunCollect(0xc0001578c0)
	/Users/cuonglm/go/src/github.com/loadimpact/k6/stats/csv/collector_test.go:287 +0xcf0
testing.tRunner(0xc0001578c0, 0x1a307d0)
	/Users/cuonglm/sources/go/src/testing/testing.go:954 +0x1ec
created by testing.(*T).Run
	/Users/cuonglm/sources/go/src/testing/testing.go:1005 +0x661
exit status 2
FAIL	github.com/loadimpact/k6/stats/csv	0.533s

  4. randall77 commented on Dec 2, 2019

    @randall77
    randall77
    on Dec 2, 2019
    Contributor

    I can reproduce the first error on linux/amd64.
    It doesn't seem to fail with 1.13.

    Presumably this is a bug in the tsan C++ library. It looks like a memory overwrite. The code is checking that the header of the memory block has not been clobbered between allocation and free, and it has been clobbered.

    I don't see anything in the tsan tracker that might be a fix for this, after we forked it at 810ae8ddac890a6613d814c0b5415c7fcb7f5cca. But I'm not sure about that.

    @dvyukov

  5. cuonglm commented on Dec 2, 2019

    @cuonglm
    cuonglm
    on Dec 2, 2019
    MemberAuthor

    @randall77 it's only failed after 2d8c199

  6. ianlancetaylor commented on Dec 2, 2019

    @ianlancetaylor
    ianlancetaylor
    on Dec 2, 2019
    Contributor

    I have a fix.

  7. gopherbot commented on Dec 2, 2019

    @gopherbot
    gopherbot
    on Dec 2, 2019
    Contributor

    Change https://golang.org/cl/209580 mentions this issue: runtime: use current P's race context in timer code

  8. gopherbot
    closed this as completedin 94f4686on Dec 2, 2019
  9. golang
    locked and limited conversation to collaborators on Dec 1, 2020
  10. gopherbot
    added
    FrozenDueToAge
    on Dec 1, 2020
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