runtime/pprof: TestProfilerStackDepth/heap failures

[gopherbot]

#!watchflakes
default <- pkg == "runtime/pprof" && test == "TestProfilerStackDepth/heap"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestProfilerStackDepth/heap
panic: runtime.errorString("integer divide by zero")
fatal error: panic holding locks

goroutine 3 gp=0x14000002c40 m=5 mp=0x14000580008 [running]:
runtime.throw({0x104a12b3e?, 0x104baff30?})
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/panic.go:1067 +0x38 fp=0x140000efc30 sp=0x140000efc00 pc=0x1049020a8
panic({0x104a750c0?, 0x104baff30?})
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/panic.go:771 +0x1a8 fp=0x140000efce0 sp=0x140000efc30 pc=0x104901ea8
runtime.panicdivide()
...
runtime/pprof.goroutineDeep(0x104a0ed95?, 0x5?)
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/pprof/pprof_test.go:2560 +0xa8 fp=0x1400013bf80 sp=0x1400013bf50 pc=0x1049f97e8
runtime/pprof.produceProfileEvents(0x1400010c9c0, 0x80)
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/pprof/pprof_test.go:2580 +0x90 fp=0x1400013bfb0 sp=0x1400013bf80 pc=0x1049f98e0
runtime/pprof.TestProfilerStackDepth.gowrap1()
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/pprof/pprof_test.go:2456 +0x2c fp=0x1400013bfd0 sp=0x1400013bfb0 pc=0x1049f92ac
runtime.goexit({})
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1223 +0x4 fp=0x1400013bfd0 sp=0x1400013bfd0 pc=0x10490a694
created by runtime/pprof.TestProfilerStackDepth in goroutine 12205
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/pprof/pprof_test.go:2456 +0xe4

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "runtime/pprof" && test == "TestProfilerStackDepth/heap"

2024-08-15 20:19 gotip-darwin-arm64_13 go@dc5389d8 runtime/pprof.TestProfilerStackDepth/heap [ABORT] (log)

=== RUN   TestProfilerStackDepth/heap
panic: runtime.errorString("integer divide by zero")
fatal error: panic holding locks

goroutine 3 gp=0x14000002c40 m=5 mp=0x14000580008 [running]:
runtime.throw({0x104a12b3e?, 0x104baff30?})
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/panic.go:1067 +0x38 fp=0x140000efc30 sp=0x140000efc00 pc=0x1049020a8
panic({0x104a750c0?, 0x104baff30?})
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/panic.go:771 +0x1a8 fp=0x140000efce0 sp=0x140000efc30 pc=0x104901ea8
runtime.panicdivide()
...
runtime/pprof.goroutineDeep(0x104a0ed95?, 0x5?)
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/pprof/pprof_test.go:2560 +0xa8 fp=0x1400013bf80 sp=0x1400013bf50 pc=0x1049f97e8
runtime/pprof.produceProfileEvents(0x1400010c9c0, 0x80)
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/pprof/pprof_test.go:2580 +0x90 fp=0x1400013bfb0 sp=0x1400013bf80 pc=0x1049f98e0
runtime/pprof.TestProfilerStackDepth.gowrap1()
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/pprof/pprof_test.go:2456 +0x2c fp=0x1400013bfd0 sp=0x1400013bfb0 pc=0x1049f92ac
runtime.goexit({})
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1223 +0x4 fp=0x1400013bfd0 sp=0x1400013bfd0 pc=0x10490a694
created by runtime/pprof.TestProfilerStackDepth in goroutine 12205
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/pprof/pprof_test.go:2456 +0xe4

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "runtime/pprof" && test == "TestProfilerStackDepth/heap"

2024-08-15 20:28 gotip-darwin-arm64_13 go@bd8977be runtime/pprof.TestProfilerStackDepth/heap [ABORT] (log)

=== RUN   TestProfilerStackDepth/heap
fatal error: integer divide by zero

runtime stack:
runtime.throw({0x100823b8a?, 0x14000080008?})
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/panic.go:1067 +0x38 fp=0x16f986b00 sp=0x16f986ad0 pc=0x1007120a8
runtime.panicCheck2({0x100823b8a?, 0x1006d00f4?})
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/panic.go:79 +0x44 fp=0x16f986b20 sp=0x16f986b00 pc=0x1006d6f94
runtime.panicdivide()
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/panic.go:240 +0x28 fp=0x16f986b40 sp=0x16f986b20 pc=0x1006d77b8
...
runtime/pprof.goroutineDeep(0x7?, 0x140004060b9?)
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/pprof/pprof_test.go:2560 +0xa8 fp=0x1400010ff80 sp=0x1400010ff50 pc=0x1008097e8
runtime/pprof.produceProfileEvents(0x140000b2d00, 0x80)
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/pprof/pprof_test.go:2580 +0x90 fp=0x1400010ffb0 sp=0x1400010ff80 pc=0x1008098e0
runtime/pprof.TestProfilerStackDepth.gowrap1()
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/pprof/pprof_test.go:2456 +0x2c fp=0x1400010ffd0 sp=0x1400010ffb0 pc=0x1008092ac
runtime.goexit({})
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1223 +0x4 fp=0x1400010ffd0 sp=0x1400010ffd0 pc=0x10071a694
created by runtime/pprof.TestProfilerStackDepth in goroutine 8913
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/pprof/pprof_test.go:2456 +0xe4

— watchflakes

[gopherbot]

Change https://go.dev/cl/606115 mentions this issue: runtime: store zero-delay mutex contention events

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "runtime/pprof" && test == "TestProfilerStackDepth/heap"

2024-08-16 14:47 gotip-darwin-arm64_13 go@0320616d runtime/pprof.TestProfilerStackDepth/heap [ABORT] (log)

=== RUN   TestProfilerStackDepth/heap
panic: runtime.errorString("integer divide by zero")
fatal error: panic holding locks

goroutine 3 gp=0x14000002c40 m=7 mp=0x14000580808 [running]:
runtime.throw({0x104e22b9e?, 0x104fbff30?})
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/panic.go:1067 +0x38 fp=0x14000326bf0 sp=0x14000326bc0 pc=0x104d120a8
panic({0x104e850c0?, 0x104fbff30?})
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/panic.go:771 +0x1a8 fp=0x14000326ca0 sp=0x14000326bf0 pc=0x104d11ea8
runtime.panicdivide()
...
runtime/pprof.goroutineDeep(0x14007e1a9c0?, 0x7c?)
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/pprof/pprof_test.go:2560 +0xa8 fp=0x14000177f80 sp=0x14000177f50 pc=0x104e09848
runtime/pprof.produceProfileEvents(0x14007e1a9c0, 0x80)
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/pprof/pprof_test.go:2580 +0x90 fp=0x14000177fb0 sp=0x14000177f80 pc=0x104e09940
runtime/pprof.TestProfilerStackDepth.gowrap1()
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/pprof/pprof_test.go:2456 +0x2c fp=0x14000177fd0 sp=0x14000177fb0 pc=0x104e0930c
runtime.goexit({})
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1223 +0x4 fp=0x14000177fd0 sp=0x14000177fd0 pc=0x104d1a694
created by runtime/pprof.TestProfilerStackDepth in goroutine 36944
	/Volumes/Work/s/w/ir/x/w/goroot/src/runtime/pprof/pprof_test.go:2456 +0xe4

— watchflakes