morestack uses the frame pointer from g0.sched.bp. This doesn't really
make any sense. morestack wasn't called by whatever used g0 last, so at
best unwinding will get misleading results.
For #63630.
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-linux-arm64-longtest
Change-Id: I6a6a636c3a2994eb88f890c506c96fd899e993a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/669616
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Nick Ripley <nick.ripley@datadoghq.com> Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com>