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runtime: TestCgoCallbackPprof failures #76650

Description

@gopherbot
#!watchflakes
default <- pkg == "runtime" && test == "TestCgoCallbackPprof"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestCgoCallbackPprof
=== PAUSE TestCgoCallbackPprof
=== CONT  TestCgoCallbackPprof
    crash_cgo_test.go:100: /home/swarming/.swarming/w/ir/x/t/go-build349000260/testprogcgo.exe CgoCallbackPprof: exit status 1
    crash_cgo_test.go:102: expected "OK\n", but got:
        Missing main.go_callback1_callee sample in profile PeriodType: cpu nanoseconds
        Period: 10000000
        Time: 2025-12-01 13:58:32.327703439 -0800 PST
        Duration: 1.0803949s
        Samples:
...
            10: 0x4fc63f M=1 main.go_callback1_callee /home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprogcgo/callback_pprof.go:132 s=128
                     main.go_callback1 /home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprogcgo/callback_pprof.go:125 s=122
                     _cgoexp_0a852ad1625c_go_callback1 _cgo_gotypes.go:687 s=685
            11: 0x3b69b3 M=1 runtime.cgocallbackg1 /home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/cgocall.go:446 s=382
            12: 0x3b664f M=1 runtime.cgocallbackg /home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/cgocall.go:350 s=301
            13: 0x43ca6b M=1 runtime.cgocallback /home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1165 s=1043
        Mappings
        1: 0x0/0x0/0x0   [FN]
        
--- FAIL: TestCgoCallbackPprof (4.72s)

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    NeedsInvestigationSomeone must examine and confirm this is a valid issue and not a duplicate of an existing one.WaitingForInfoIssue is not actionable because of missing required information, which needs to be provided.compiler/runtimeIssues related to the Go compiler and/or runtime.

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