runtime: non-empty mark queue after concurrent mark #69803
Description
Test failure on https://go.dev/cl/617376/2, which I don't think was responsible for the failure. Only builder to fail was gotip-linux-amd64-aliastypeparams.
runtime: full=0xc0000d38000006 next=129 jobs=128 nDataRoots=1 nBSSRoots=1 nSpanRoots=16 nStackRoots=108
panic: non-empty mark queue after concurrent mark
fatal error: panic on system stack
runtime stack:
runtime.throw({0x6dcdac?, 0x73cf70?})
/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1074 +0x48 fp=0x7fdc4b7fdd30 sp=0x7fdc4b7fdd00 pc=0x472a48
panic({0x67f660?, 0x73cf70?})
/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:751 +0x33b fp=0x7fdc4b7fdde0 sp=0x7fdc4b7fdd30 pc=0x47295b
runtime.gcMark(0x47b2ed?)
/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1531 +0x3ec fp=0x7fdc4b7fde58 sp=0x7fdc4b7fdde0 pc=0x41b78c
runtime.gcMarkTermination.func1()
/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:980 +0x17 fp=0x7fdc4b7fde70 sp=0x7fdc4b7fde58 pc=0x41ab77
runtime.systemstack(0x800000)
/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:514 +0x4a fp=0x7fdc4b7fde80 sp=0x7fdc4b7fde70 pc=0x47792a
Full log at: https://logs.chromium.org/logs/golang/buildbucket/cr-buildbucket/8734717093063296065/+/u/step/11/log/2?format=raw
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