affected/package: found pointer to free object (go runtime)

[sanjaynirankari]

What version of Go are you using (go version)?

$ go version 1.15.10

Does this issue reproduce with the latest release?

What operating system and processor architecture are you using (go env)?

go env Output

$ go env

What did you do?

We used workgroup here, we didn't pass workgroup to any function and it's crashing on waitgroup wait method.

What did you expect to see?

The program to start up normally on all hosts.

What did you see instead?

0xc001bf3c80 free unmarked
0xc001bf3e00 free unmarked
fatal error: found pointer to free object
runtime stack:
runtime.throw(0x30c2b91, 0x1c)
/usr/local/go/src/runtime/panic.go:1116 +0x72
runtime.(*mspan).reportZombies(0x7fc084366ab0)
/usr/local/go/src/runtime/mgcsweep.go:827 +0x376
runtime.(*mspan).sweep(0x7fc084366ab0, 0xc000601100, 0x1)
/usr/local/go/src/runtime/mgcsweep.go:451 +0x81b
runtime.(*mcentral).uncacheSpan(0x4d40598, 0x7fc084366ab0)
/usr/local/go/src/runtime/mcentral.go:383 +0xec
runtime.(*mcache).releaseAll(0x7fc0ad85a7d0)
/usr/local/go/src/runtime/mcache.go:162 +0x6a
runtime.(*mcache).prepareForSweep(0x7fc0ad85a7d0)
/usr/local/go/src/runtime/mcache.go:189 +0x46
runtime.acquirep(0xc00007e800)
/usr/local/go/src/runtime/proc.go:4467 +0x3d
runtime.stopm()
/usr/local/go/src/runtime/proc.go:1926 +0xed
runtime.gcstopm()
/usr/local/go/src/runtime/proc.go:2142 +0xbc
runtime.schedule()
/usr/local/go/src/runtime/proc.go:2632 +0x47d
runtime.goschedImpl(0xc000f91080)
/usr/local/go/src/runtime/proc.go:2866 +0xda
runtime.gopreempt_m(0xc000f91080)
/usr/local/go/src/runtime/proc.go:2894 +0x34
runtime.newstack()
/usr/local/go/src/runtime/stack.go:1047 +0x1bc
runtime.morestack()
/usr/local/go/src/runtime/asm_amd64.s:449 +0x8f
goroutine 1 [semacquire, 630 minutes]:
sync.runtime_Semacquire(0xc0007bd238)
/usr/local/go/src/runtime/sema.go:56 +0x45
sync.(*WaitGroup).Wait(0xc0007bd230)
/usr/local/go/src/sync/waitgroup.go:130 +0x65

[seankhliao]

We no longer support 1.15, sorry.