runtime: TestGdbBacktrace failures

[gopherbot]

#!watchflakes
default <- pkg == "runtime" && test == "TestGdbBacktrace"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestGdbBacktrace
=== PAUSE TestGdbBacktrace
=== CONT  TestGdbBacktrace
    runtime-gdb_test.go:81: gdb version 12.1
    runtime-gdb_test.go:489: GDB command timed out after 5m21.961754265s: /usr/bin/gdb -nx -batch -iex add-auto-load-safe-path /home/swarming/.swarming/w/ir/x/w/goroot/src/runtime -ex set startup-with-shell off -ex break main.eee -ex run -ex backtrace -ex continue /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/a.exe
    runtime-gdb_test.go:494: gdb output:
        Loading Go Runtime support.
        Breakpoint 1 at 0x6979c: file /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/main.go, line 17.
        [New LWP 370763]
        [New LWP 370764]
        [New LWP 370766]
        [New LWP 370767]
        
        Thread 1 "a.exe" hit Breakpoint 1, 0x000000000006979c in main.eee (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/main.go:17
        17	func eee() bool { return true }
        #0  0x000000000006979c in main.eee (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/main.go:17
        #1  0x000000000006978c in main.ddd (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/main.go:14
        #2  0x0000000000069750 in main.ccc (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/main.go:11
        #3  0x0000000000069720 in main.bbb (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/main.go:8
        #4  0x00000000000696f0 in main.aaa (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/main.go:5
        #5  0x00000000000697c8 in main.main () at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/main.go:22
        [LWP 370767 exited]
        [LWP 370766 exited]
        [LWP 370763 exited]
        [LWP 370761 exited]
    runtime-gdb_test.go:513: gdb exited with error: signal: killed
--- FAIL: TestGdbBacktrace (324.28s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "runtime" && test == "TestGdbBacktrace"

2024-01-17 20:26 gotip-linux-riscv64 go@8d04110c runtime.TestGdbBacktrace (log)

=== RUN   TestGdbBacktrace
=== PAUSE TestGdbBacktrace
=== CONT  TestGdbBacktrace
    runtime-gdb_test.go:81: gdb version 12.1
    runtime-gdb_test.go:489: GDB command timed out after 5m21.961754265s: /usr/bin/gdb -nx -batch -iex add-auto-load-safe-path /home/swarming/.swarming/w/ir/x/w/goroot/src/runtime -ex set startup-with-shell off -ex break main.eee -ex run -ex backtrace -ex continue /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/a.exe
    runtime-gdb_test.go:494: gdb output:
        Loading Go Runtime support.
        Breakpoint 1 at 0x6979c: file /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/main.go, line 17.
        [New LWP 370763]
        [New LWP 370764]
        [New LWP 370766]
        [New LWP 370767]
        
        Thread 1 "a.exe" hit Breakpoint 1, 0x000000000006979c in main.eee (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/main.go:17
        17	func eee() bool { return true }
        #0  0x000000000006979c in main.eee (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/main.go:17
        #1  0x000000000006978c in main.ddd (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/main.go:14
        #2  0x0000000000069750 in main.ccc (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/main.go:11
        #3  0x0000000000069720 in main.bbb (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/main.go:8
        #4  0x00000000000696f0 in main.aaa (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/main.go:5
        #5  0x00000000000697c8 in main.main () at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace964012512/001/main.go:22
        [LWP 370767 exited]
        [LWP 370766 exited]
        [LWP 370763 exited]
        [LWP 370761 exited]
    runtime-gdb_test.go:513: gdb exited with error: signal: killed
--- FAIL: TestGdbBacktrace (324.28s)

— watchflakes

[mknyszek]

In triage: maybe this is a hang in gdb? It wouldn't be that surprising. I think we need to wait for more.

CC @golang/riscv64

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "runtime" && test == "TestGdbBacktrace"

2024-03-04 18:29 linux-ppc64le-buildlet go@90796f44 runtime.TestGdbBacktrace (log)

--- FAIL: TestGdbBacktrace (528.14s)
    runtime-gdb_test.go:78: gdb version 9.2
    runtime-gdb_test.go:468: GDB command timed out after 8m47.858168161s: /usr/bin/gdb -nx -batch -iex add-auto-load-safe-path /workdir/go/src/runtime -ex set startup-with-shell off -ex break main.eee -ex run -ex backtrace -ex continue /workdir/tmp/TestGdbBacktrace695677159/001/a.exe
    runtime-gdb_test.go:473: gdb output:
        Loading Go Runtime support.
        Breakpoint 1 at 0x77090: file /workdir/tmp/TestGdbBacktrace695677159/001/main.go, line 17.
    runtime-gdb_test.go:492: gdb exited with error: signal: killed

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "runtime" && test == "TestGdbBacktrace"

2024-11-11 23:49 gotip-linux-amd64 go@f9159b11 runtime.TestGdbBacktrace (log)

=== RUN   TestGdbBacktrace
=== PAUSE TestGdbBacktrace
=== CONT  TestGdbBacktrace
    runtime-gdb_test.go:79: gdb version 10.1
    runtime-gdb_test.go:527: gdb output:
        Loading Go Runtime support.
    runtime-gdb_test.go:546: gdb exited with error: exec: WaitDelay expired before I/O complete
--- FAIL: TestGdbBacktrace (7.75s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "runtime" && test == "TestGdbBacktrace"

2025-04-22 17:00 gotip-linux-arm64-race go@7a177114 runtime.TestGdbBacktrace (log)

=== RUN   TestGdbBacktrace
=== PAUSE TestGdbBacktrace
=== CONT  TestGdbBacktrace
    runtime-gdb_test.go:81: gdb version 13.1
    runtime-gdb_test.go:529: gdb output:
        Loading Go Runtime support.
        Breakpoint 1 at 0x778d4: file /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace3863330030/001/main.go, line 17.
        [New LWP 58668]
        [New LWP 58669]
        [New LWP 58670]
        [New LWP 58672]
        
        Thread 1 "a.exe" hit Breakpoint 1, 0x00000000000778d4 in main.eee (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace3863330030/001/main.go:17
        17	func eee() bool { return true }
        #0  0x00000000000778d4 in main.eee (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace3863330030/001/main.go:17
        #1  0x00000000000778b8 in main.ddd (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace3863330030/001/main.go:14
        #2  0x000000000007786c in main.ccc (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace3863330030/001/main.go:11
        #3  0x000000000007782c in main.bbb (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace3863330030/001/main.go:8
        #4  0x00000000000777ec in main.aaa (~r0=<optimized out>) at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace3863330030/001/main.go:5
        #5  0x00000000000778fc in main.main () at /home/swarming/.swarming/w/ir/x/t/TestGdbBacktrace3863330030/001/main.go:22
        Unable to fetch general registers: No such process.
        [LWP 58672 exited]
        [LWP 58670 exited]
        [LWP 58668 exited]
        [LWP 58652 exited]
    runtime-gdb_test.go:548: gdb exited with error: exit status 1
--- FAIL: TestGdbBacktrace (1.86s)

— watchflakes