runtime: TestGdbPython failures

[gopherbot]

#!watchflakes
post <- pkg == "runtime" && test == "TestGdbPython"

Issue created automatically to collect these failures.

Example (log):

panic: test timed out after 6m0s
running tests:
	TestGdbPython (5m13s)

syscall.Syscall6(0x110, 0x1, 0xc223, 0xc0001d5740, 0x1000004, 0x0, 0x0)
	/workdir/go/src/syscall/syscall_linux.go:91 +0x28 fp=0xc0001d56e8 sp=0xc0001d5678 pc=0xabb78
os.(*Process).blockUntilWaitable(0xc00040ec90)
	/workdir/go/src/os/wait_waitid.go:32 +0x8c fp=0xc0001d57d0 sp=0xc0001d56e8 pc=0xd592c
os.(*Process).wait(0xc00040ec90)
	/workdir/go/src/os/exec_unix.go:22 +0x3c fp=0xc0001d5850 sp=0xc0001d57d0 pc=0xcfb5c
os.(*Process).Wait(...)
	/workdir/go/src/os/exec.go:134
os/exec.(*Cmd).Wait(0xc0005f2f20)
	/workdir/go/src/os/exec/exec.go:897 +0x54 fp=0xc0001d58e0 sp=0xc0001d5850 pc=0x164ab4
os/exec.(*Cmd).Run(0xc0005f2f20)
	/workdir/go/src/os/exec/exec.go:607 +0x50 fp=0xc0001d5908 sp=0xc0001d58e0 pc=0x1638e0
os/exec.(*Cmd).CombinedOutput(0xc0005f2f20)
	/workdir/go/src/os/exec/exec.go:1012 +0xa0 fp=0xc0001d5960 sp=0xc0001d5908 pc=0x165390
runtime_test.testGdbPython(0xc0002849c0, 0x0)
	/workdir/go/src/runtime/runtime-gdb_test.go:272 +0xdec fp=0xc0001d5f00 sp=0xc0001d5960 pc=0x38580c
runtime_test.TestGdbPython(0x0?)
	/workdir/go/src/runtime/runtime-gdb_test.go:160 +0x30 fp=0xc0001d5f30 sp=0xc0001d5f00 pc=0x384990
testing.tRunner(0xc0002849c0, 0x4a5aa0)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

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

2023-10-10 00:25 linux-ppc64le-power9osu go@b201cf4a runtime.TestGdbPython (log)

panic: test timed out after 6m0s
running tests:
	TestGdbPython (5m13s)

syscall.Syscall6(0x110, 0x1, 0xc223, 0xc0001d5740, 0x1000004, 0x0, 0x0)
	/workdir/go/src/syscall/syscall_linux.go:91 +0x28 fp=0xc0001d56e8 sp=0xc0001d5678 pc=0xabb78
os.(*Process).blockUntilWaitable(0xc00040ec90)
	/workdir/go/src/os/wait_waitid.go:32 +0x8c fp=0xc0001d57d0 sp=0xc0001d56e8 pc=0xd592c
os.(*Process).wait(0xc00040ec90)
	/workdir/go/src/os/exec_unix.go:22 +0x3c fp=0xc0001d5850 sp=0xc0001d57d0 pc=0xcfb5c
os.(*Process).Wait(...)
	/workdir/go/src/os/exec.go:134
os/exec.(*Cmd).Wait(0xc0005f2f20)
	/workdir/go/src/os/exec/exec.go:897 +0x54 fp=0xc0001d58e0 sp=0xc0001d5850 pc=0x164ab4
os/exec.(*Cmd).Run(0xc0005f2f20)
	/workdir/go/src/os/exec/exec.go:607 +0x50 fp=0xc0001d5908 sp=0xc0001d58e0 pc=0x1638e0
os/exec.(*Cmd).CombinedOutput(0xc0005f2f20)
	/workdir/go/src/os/exec/exec.go:1012 +0xa0 fp=0xc0001d5960 sp=0xc0001d5908 pc=0x165390
runtime_test.testGdbPython(0xc0002849c0, 0x0)
	/workdir/go/src/runtime/runtime-gdb_test.go:272 +0xdec fp=0xc0001d5f00 sp=0xc0001d5960 pc=0x38580c
runtime_test.TestGdbPython(0x0?)
	/workdir/go/src/runtime/runtime-gdb_test.go:160 +0x30 fp=0xc0001d5f30 sp=0xc0001d5f00 pc=0x384990
testing.tRunner(0xc0002849c0, 0x4a5aa0)

— watchflakes

[bcmills]

Compare #58932

[mknyszek]

CC @golang/ppc64

[mknyszek]

In triage we think this is probably related to #58932. Closing as a duplicate.

EDIT: I also made the watchflakes pattern more general in the other issue.