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runtime: apparent TestEnsureDropM deadlock on openbsd-386-62 builder #39039

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bcmills opened this issue May 13, 2020 · 1 comment
Open

runtime: apparent TestEnsureDropM deadlock on openbsd-386-62 builder #39039

bcmills opened this issue May 13, 2020 · 1 comment

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@bcmills
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@bcmills bcmills commented May 13, 2020

2020-05-12T19:15:34-cb11c98/openbsd-386-62

--- FAIL: TestEnsureDropM (120.07s)
    crash_test.go:95: testprogcgo EnsureDropM exit status: exit status 2
    crash_cgo_test.go:174: expected "OK\n", got SIGQUIT: quit
        PC=0x1c05a717 m=6 sigcode=0
        
        goroutine 0 [idle]:
        runtime.thrsleep(0x3c42cacc, 0x3, 0x0, 0x0, 0x3c42cacc, 0x4, 0x1c041aa2, 0x7c28a9ec, 0x0, 0x0, ...)
        	/tmp/workdir/go/src/runtime/sys_openbsd_386.s:384 +0x7
        runtime.semasleep(0xffffffff, 0xffffffff, 0x3c42c900)
        	/tmp/workdir/go/src/runtime/os_openbsd.go:167 +0xcc
        runtime.notesleep(0x3c1223fc)
        	/tmp/workdir/go/src/runtime/lock_sema.go:181 +0xda
        runtime.templateThread()
        	/tmp/workdir/go/src/runtime/proc.go:1863 +0xd4
        runtime.mstart1()
        	/tmp/workdir/go/src/runtime/proc.go:1156 +0x8f
        runtime.mstart()
        	/tmp/workdir/go/src/runtime/proc.go:1121 +0x4f
        
        goroutine 1 [syscall]:
        main._Cfunc_CheckM()
        	_cgo_gotypes.go:127 +0x2d
        main.EnsureDropM()
        	/tmp/workdir/go/src/runtime/testdata/testprogcgo/dropm.go:57 +0x14
        main.main()
        	/tmp/workdir/go/src/runtime/testdata/testprogcgo/main.go:34 +0x148
        
        eax    0x4
        ebx    0xffffffff
        ecx    0x0
        edx    0x3c42cacc
        edi    0x1c031b40
        esi    0x3c400d20
        ebp    0x1
        esp    0x7c28a9c4
        eip    0x1c05a717
        eflags 0x206
        cs     0x2b
        fs     0x7c24005b
        gs     0x9720063
FAIL
FAIL	runtime	186.395s

CC @ianlancetaylor

@bcmills bcmills added this to the Backlog milestone May 13, 2020
@bcmills bcmills added the OS-OpenBSD label May 13, 2020
@bcmills
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@bcmills bcmills commented May 13, 2020

Possibly related to the TestCrashDumpsAllThreads flakes reported in #35356 (comment).

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