runtime: SIGSEGV from runtime.(*timersBucket).addtimerLocked on darwin/arm64 #24790

eliasnaur · Apr 10, 2018

[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x100a649bc]



goroutine 7 [running]:

runtime.throw(0x100b7e2be, 0x2a)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/runtime/panic.go:598 +0x4c fp=0x1300346d0 sp=0x1300346a0 pc=0x100a49a0c

runtime.sigpanic()

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/runtime/signal_unix.go:372 +0x23c fp=0x130034720 sp=0x1300346d0 pc=0x100a5d33c

runtime.lock(0x0)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/runtime/lock_sema.go:43 +0x34 fp=0x130034760 sp=0x130034730 pc=0x100a2a514

runtime.timerproc(0x0)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/runtime/time.go:208 +0x22c fp=0x1300347d0 sp=0x130034760 pc=0x100a649bc

runtime.goexit()

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/runtime/asm_arm64.s:1089 +0x4 fp=0x1300347d0 sp=0x1300347d0 pc=0x100a72374

created by runtime.(*timersBucket).addtimerLocked

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/runtime/time.go:160 +0xe4



goroutine 1 [chan receive]:

testing.(*T).Run(0x1300bc0f0, 0x100b77966, 0xc, 0x100b80458, 0x5acc65d5)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/testing/testing.go:839 +0x248

testing.runTests.func1(0x1300bc000)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/testing/testing.go:1081 +0x54

testing.tRunner(0x1300bc000, 0x130055df0)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/testing/testing.go:791 +0xa8

testing.runTests(0x1300881c0, 0x100c47ed0, 0x1, 0x1, 0x1300ba0a8)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/testing/testing.go:1079 +0x248

testing.(*M).Run(0x1300ba100, 0x0)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/testing/testing.go:996 +0x148

main.main()

	_testmain.go:42 +0x148



goroutine 20 [chan receive]:

testing.(*T).Run(0x1300bc1e0, 0x100b7628e, 0x3, 0x13007c6f0, 0x5acc65d5)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/testing/testing.go:839 +0x248

vendor/golang_org/x/net/nettest.TestTestConn(0x1300bc0f0)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/vendor/golang_org/x/net/nettest/conntest_test.go:26 +0xa0

testing.tRunner(0x1300bc0f0, 0x100b80458)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/testing/testing.go:791 +0xa8

created by testing.(*T).Run

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/testing/testing.go:838 +0x22c



goroutine 21 [chan receive]:

testing.(*T).Run(0x1300bc870, 0x100b77f3f, 0xe, 0x13007c9a0, 0x1)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/testing/testing.go:839 +0x248

vendor/golang_org/x/net/nettest.testConn(0x1300bc1e0, 0x13007c720)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/vendor/golang_org/x/net/nettest/conntest_go17.go:20 +0x2f4

vendor/golang_org/x/net/nettest.TestConn(0x1300bc1e0, 0x13007c720)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/vendor/golang_org/x/net/nettest/conntest.go:38 +0x28

vendor/golang_org/x/net/nettest.TestTestConn.func1(0x1300bc1e0)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/vendor/golang_org/x/net/nettest/conntest_test.go:73 +0xac

testing.tRunner(0x1300bc1e0, 0x13007c6f0)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/testing/testing.go:791 +0xa8

created by testing.(*T).Run

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/testing/testing.go:838 +0x22c



goroutine 69 [semacquire]:

sync.runtime_Semacquire(0x130086628)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/runtime/sema.go:56 +0x2c

sync.(*WaitGroup).Wait(0x130086620)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/sync/waitgroup.go:130 +0x64

vendor/golang_org/x/net/nettest.testPresentTimeout(0x1300bc870, 0x100b94d40, 0x13000e040, 0x100b94d40, 0x1300920a0)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/vendor/golang_org/x/net/nettest/conntest.go:279 +0x13c

vendor/golang_org/x/net/nettest.timeoutWrapper(0x1300bc870, 0x13007c720, 0x100b80528)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/vendor/golang_org/x/net/nettest/conntest.go:57 +0x1a4

vendor/golang_org/x/net/nettest.testConn.func8(0x1300bc870)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/vendor/golang_org/x/net/nettest/conntest_go17.go:20 +0x34

testing.tRunner(0x1300bc870, 0x13007c9a0)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/testing/testing.go:791 +0xa8

created by testing.(*T).Run

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/testing/testing.go:838 +0x22c



goroutine 71 [sleep]:

time.Sleep(0x5f5e100)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/runtime/time.go:102 +0x118

vendor/golang_org/x/net/nettest.testPresentTimeout.func1(0x130086620, 0x13001a070, 0x100b94d40, 0x13000e040)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/vendor/golang_org/x/net/nettest/conntest.go:252 +0x48

created by vendor/golang_org/x/net/nettest.testPresentTimeout

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/vendor/golang_org/x/net/nettest/conntest.go:250 +0xb8



goroutine 72 [runnable]:

vendor/golang_org/x/net/nettest.testPresentTimeout.func2(0x130086620, 0x100b94d40, 0x13000e040, 0x1300bc870, 0x13001a070)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/vendor/golang_org/x/net/nettest/conntest.go:257

created by vendor/golang_org/x/net/nettest.testPresentTimeout

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/vendor/golang_org/x/net/nettest/conntest.go:257 +0xf8



goroutine 73 [runnable]:

syscall.Syscall(0x4, 0x5, 0x1301e8800, 0x400, 0x400, 0x0, 0x0)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/syscall/asm_darwin_arm64.s:13 +0x8

syscall.write(0x5, 0x1301e8800, 0x400, 0x400, 0x1300bad00, 0x0, 0x0)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/syscall/zsyscall_darwin_arm64.go:1321 +0x48

syscall.Write(0x5, 0x1301e8800, 0x400, 0x400, 0x400, 0x0, 0x0)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/syscall/syscall_unix.go:191 +0x38

internal/poll.(*FD).Write(0x1300bad80, 0x1301e8800, 0x400, 0x400, 0x0, 0x0, 0x0)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/internal/poll/fd_unix.go:262 +0x118

net.(*netFD).Write(0x1300bad80, 0x1301e8800, 0x400, 0x400, 0x400, 0x100b28fd4, 0x400)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/net/fd_unix.go:220 +0x3c

net.(*conn).Write(0x13000e040, 0x1301e8800, 0x400, 0x400, 0x0, 0x0, 0x0)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/net/net.go:188 +0x50

vendor/golang_org/x/net/nettest.testPresentTimeout.func3(0x130086620, 0x100b94d40, 0x13000e040, 0x1300bc870, 0x13001a070)

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/vendor/golang_org/x/net/nettest/conntest.go:272 +0x90

created by vendor/golang_org/x/net/nettest.testPresentTimeout

	/private/var/folders/f6/d2bhfqss2716nxm8gkv1fmb80000gn/T/workdir-host-darwin-amd64-eliasnaur-ios/go/src/vendor/golang_org/x/net/nettest/conntest.go:268 +0x138

Process 690 exited with status = 2 (0x00000002) 
go_darwin_arm_exec: test timeout (test completion)
FAIL	vendor/golang_org/x/net/nettest	385.939s

From the builder https://build.golang.org/log/2447525d04850cf62fc23eae4c5f7d2e003a2cfc.

eliasnaur · Apr 13, 2018

Another: https://build.golang.org/log/6fba185086de5d7f290fbe607d78cb2427c3d930

Also darwin/arm64.

Edit: and again:

https://build.golang.org/log/b9f8377ebcf316dd50baeff1adc1b3107ea8126a

eliasnaur · Jun 1, 2018

Perhaps this is an example of concurrent access to time.Timer instances, #25686.

ianlancetaylor · Jul 10, 2018

There are many examples of this. It seems to consistently happen when testing the vendored nettest package. CC @mikioh . On the other hand, it hasn't happened since April.

eliasnaur changed the title from runtime: SIGSEGV from runtime.(* to runtime: SIGSEGV from runtime.(*timersBucket).addtimerLocked on darwin/arm64 Apr 10, 2018

ALTree added the NeedsInvestigation label Apr 10, 2018

ianlancetaylor added this to the Go1.11 milestone Apr 10, 2018

eliasnaur referenced this issue Jun 1, 2018
Closed
runtime: "panic holding locks" when adding a timer #25619

ianlancetaylor modified the milestones: Go1.11, Go1.12 Jul 10, 2018

golang/go

runtime: SIGSEGV from runtime.(*timersBucket).addtimerLocked on darwin/arm64 #24790

eliasnaur commented Apr 10, 2018 •

edited

eliasnaur changed the title from runtime: SIGSEGV from runtime.(* to runtime: SIGSEGV from runtime.(*timersBucket).addtimerLocked on darwin/arm64 Apr 10, 2018

ALTree added the NeedsInvestigation label Apr 10, 2018

ianlancetaylor added this to the Go1.11 milestone Apr 10, 2018

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eliasnaur commented Apr 13, 2018 •

edited

eliasnaur referenced this issue Jun 1, 2018

runtime: "panic holding locks" when adding a timer #25619

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eliasnaur commented Jun 1, 2018

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ianlancetaylor commented Jul 10, 2018

ianlancetaylor modified the milestones: Go1.11, Go1.12 Jul 10, 2018

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runtime: SIGSEGV from runtime.(*timersBucket).addtimerLocked on darwin/arm64 #24790

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eliasnaur commented Apr 10, 2018 • edited

eliasnaur changed the title from runtime: SIGSEGV from runtime.(* to runtime: SIGSEGV from runtime.(*timersBucket).addtimerLocked on darwin/arm64 Apr 10, 2018

ALTree added the NeedsInvestigation label Apr 10, 2018

ianlancetaylor added this to the Go1.11 milestone Apr 10, 2018

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eliasnaur commented Apr 13, 2018 • edited

eliasnaur referenced this issue Jun 1, 2018

runtime: "panic holding locks" when adding a timer #25619

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eliasnaur commented Jun 1, 2018

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ianlancetaylor commented Jul 10, 2018

ianlancetaylor modified the milestones: Go1.11, Go1.12 Jul 10, 2018

eliasnaur commented Apr 10, 2018 •

edited

eliasnaur commented Apr 13, 2018 •

edited