os/signal: TestSignalTrace failures

[gopherbot]

#!watchflakes
default <- pkg == "os/signal" && test == "TestSignalTrace"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestSignalTrace
SIGQUIT: quit
PC=0x80c4dd7 m=11 sigcode=0

goroutine 0 gp=0xa48a368 m=11 mp=0xa488508 [idle]:
runtime.osyield()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/sys_linux_386.s:723 +0x7 fp=0xf38ff2a4 sp=0xf38ff2a0 pc=0x80c4dd7
runtime.suspendG(0xa407e68)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:250 +0x413 fp=0xf38ff2e8 sp=0xf38ff2a4 pc=0x8082ee3
runtime.traceAdvance.func1.1()
...
edi    0x12b43427
esi    0xa488508
ebp    0x0
esp    0xf38ff2a0
eip    0x80c4dd7
eflags 0x246
cs     0x23
fs     0x3
gs     0x63
*** Test killed with quit: ran too long (4m0s).

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "os/signal" && test == "TestSignalTrace"

2024-10-02 00:57 gotip-linux-386-softfloat go@aa42d7b4 os/signal.TestSignalTrace [ABORT] (log)

=== RUN   TestSignalTrace
SIGQUIT: quit
PC=0x80c4dd7 m=11 sigcode=0

goroutine 0 gp=0xa48a368 m=11 mp=0xa488508 [idle]:
runtime.osyield()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/sys_linux_386.s:723 +0x7 fp=0xf38ff2a4 sp=0xf38ff2a0 pc=0x80c4dd7
runtime.suspendG(0xa407e68)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:250 +0x413 fp=0xf38ff2e8 sp=0xf38ff2a4 pc=0x8082ee3
runtime.traceAdvance.func1.1()
...
edi    0x12b43427
esi    0xa488508
ebp    0x0
esp    0xf38ff2a0
eip    0x80c4dd7
eflags 0x246
cs     0x23
fs     0x3
gs     0x63
*** Test killed with quit: ran too long (4m0s).

— watchflakes

[mknyszek]

The stack traces here would've been useful, but they're long gone. I think this is likely the same problem as #72740, so closing as a duplicate.