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runtime: TestSpuriousWakeupsNeverHangSemasleep failures #55202

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gopherbot opened this issue Sep 20, 2022 · 12 comments
Open

runtime: TestSpuriousWakeupsNeverHangSemasleep failures #55202

gopherbot opened this issue Sep 20, 2022 · 12 comments
Labels
compiler/runtime Issues related to the Go compiler and/or runtime. NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
Milestone
Backlog

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@gopherbot
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#!watchflakes
post <- pkg == "runtime" && test == "TestSpuriousWakeupsNeverHangSemasleep"

Bug automatically created to track these flakes.

— watchflakes
@gopherbot gopherbot added the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Sep 20, 2022
@gopherbot
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gopherbot commented Sep 20, 2022 •
edited

Found new matching flaky dashboard failures for:

#!watchflakes
post <- pkg == "runtime" && test == "TestSpuriousWakeupsNeverHangSemasleep"
2022-08-11 20:16 linux-amd64-race go@b648591b runtime.TestSpuriousWakeupsNeverHangSemasleep (log) 
--- FAIL: TestSpuriousWakeupsNeverHangSemasleep (1.18s)
    semasleep_test.go:57: error reading from testprog: read |0: file already closed

— watchflakes

@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Sep 20, 2022
@rsc
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rsc commented Sep 20, 2022

Stopped.

@rsc rsc closed this as completed Sep 20, 2022
@gopherbot gopherbot changed the title runtime: flaky TestSpuriousWakeupsNeverHangSemasleep runtime: TestSpuriousWakeupsNeverHangSemasleep failures Sep 20, 2022
@gopherbot
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Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "runtime" && test == "TestSpuriousWakeupsNeverHangSemasleep"
2022-11-23 00:25 linux-mipsle-rtrk go@753ad5e1 runtime.TestSpuriousWakeupsNeverHangSemasleep (log) 
--- FAIL: TestSpuriousWakeupsNeverHangSemasleep (19.35s)
    semasleep_test.go:56: read from testprog stdout: ready
    semasleep_test.go:98: Program failed to return on time and has to be killed, issue #27520 still exists

— watchflakes

@gopherbot gopherbot reopened this Nov 28, 2022
@mknyszek
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mknyszek commented Dec 7, 2022

Judging by the rate of failure, this doesn't seem particularly critical, but we should probably make the test less flaky in general. This seems like a scheduler test that should just be made less flaky, or disabled.

@mknyszek mknyszek added this to the Backlog milestone Dec 7, 2022
@ianlancetaylor
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FYI I was able to recreate this on amd64 Linux. I ran go test -test.run=TestSpuriousWakeupsNeverHangSemasleep -test.count=1000 runtime

panic: test timed out after 10m0s
running tests:
	TestSpuriousWakeupsNeverHangSemasleep (0s)

goroutine 1227 [running]:
panic({0x7a1860, 0xc000159250})
	/home/iant/go/src/runtime/panic.go:987 +0x3bb fp=0xc000284f10 sp=0xc000284e50 pc=0x43c89b
testing.(*M).startAlarm.func1()
	/home/iant/go/src/testing/testing.go:2240 +0x3b9 fp=0xc000284fe0 sp=0xc000284f10 pc=0x50ba19
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc000284fe8 sp=0xc000284fe0 pc=0x47a861
created by time.goFunc
	/home/iant/go/src/time/sleep.go:176 +0x32

goroutine 1 [chan receive, locked to thread]:
runtime.gopark(0x0?, 0xc000491310?, 0x30?, 0x19?, 0x50d8ac?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc0001d18d8 sp=0xc0001d18b8 pc=0x43fab6
runtime.chanrecv(0xc000267490, 0x0, 0x1)
	/home/iant/go/src/runtime/chan.go:583 +0x49d fp=0xc0001d1968 sp=0xc0001d18d8 pc=0x409cdd
runtime.chanrecv1(0xc000237a40?, 0x8289ae?)
	/home/iant/go/src/runtime/chan.go:442 +0x18 fp=0xc0001d1990 sp=0xc0001d1968 pc=0x4097d8
testing.tRunner.func1()
	/home/iant/go/src/testing/testing.go:1541 +0x4a5 fp=0xc0001d1af8 sp=0xc0001d1990 pc=0x507b65
testing.tRunner(0xc0001409c0, 0xc0001d1c10)
	/home/iant/go/src/testing/testing.go:1581 +0x144 fp=0xc0001d1b48 sp=0xc0001d1af8 pc=0x507644
testing.runTests(0xc0001aca00?, {0xacc540, 0x195, 0x195}, {0x419450?, 0xc00019fe70?, 0xad09c0?})
	/home/iant/go/src/testing/testing.go:2033 +0x489 fp=0xc0001d1c40 sp=0xc0001d1b48 pc=0x50a569
testing.(*M).Run(0xc0001aca00)
	/home/iant/go/src/testing/testing.go:1905 +0x63a fp=0xc0001d1e88 sp=0xc0001d1c40 pc=0x508eda
runtime_test.TestMain(0xffffffffffffffff?)
	/home/iant/go/src/runtime/crash_test.go:27 +0x19 fp=0xc0001d1ec8 sp=0xc0001d1e88 pc=0x6d9df9
main.main()
	_testmain.go:1409 +0x1d3 fp=0xc0001d1f80 sp=0xc0001d1ec8 pc=0x7743d3
runtime.main()
	/home/iant/go/src/runtime/proc.go:250 +0x207 fp=0xc0001d1fe0 sp=0xc0001d1f80 pc=0x43f687
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc0001d1fe8 sp=0xc0001d1fe0 pc=0x47a861

goroutine 2 [force gc (idle), 3 minutes]:
runtime.gopark(0xe2743499fee7?, 0x0?, 0x0?, 0x0?, 0x0?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc000066fb0 sp=0xc000066f90 pc=0x43fab6
runtime.goparkunlock(...)
	/home/iant/go/src/runtime/proc.go:387
runtime.forcegchelper()
	/home/iant/go/src/runtime/proc.go:305 +0xb0 fp=0xc000066fe0 sp=0xc000066fb0 pc=0x43f8f0
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc000066fe8 sp=0xc000066fe0 pc=0x47a861
created by runtime.init.6
	/home/iant/go/src/runtime/proc.go:293 +0x25

goroutine 3 [GC sweep wait]:
runtime.gopark(0x1?, 0x0?, 0x0?, 0x0?, 0x0?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc000067780 sp=0xc000067760 pc=0x43fab6
runtime.goparkunlock(...)
	/home/iant/go/src/runtime/proc.go:387
runtime.bgsweep(0x0?)
	/home/iant/go/src/runtime/mgcsweep.go:319 +0xde fp=0xc0000677c8 sp=0xc000067780 pc=0x429dde
runtime.gcenable.func1()
	/home/iant/go/src/runtime/mgc.go:178 +0x26 fp=0xc0000677e0 sp=0xc0000677c8 pc=0x41eb86
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc0000677e8 sp=0xc0000677e0 pc=0x47a861
created by runtime.gcenable
	/home/iant/go/src/runtime/mgc.go:178 +0x6b

goroutine 4 [GC scavenge wait]:
runtime.gopark(0xe27434a23fd1?, 0x11cd1efe?, 0x0?, 0x0?, 0x0?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc000067f70 sp=0xc000067f50 pc=0x43fab6
runtime.goparkunlock(...)
	/home/iant/go/src/runtime/proc.go:387
runtime.(*scavengerState).park(0xad0a40)
	/home/iant/go/src/runtime/mgcscavenge.go:400 +0x53 fp=0xc000067fa0 sp=0xc000067f70 pc=0x427cd3
runtime.bgscavenge(0x0?)
	/home/iant/go/src/runtime/mgcscavenge.go:633 +0x65 fp=0xc000067fc8 sp=0xc000067fa0 pc=0x4282c5
runtime.gcenable.func2()
	/home/iant/go/src/runtime/mgc.go:179 +0x26 fp=0xc000067fe0 sp=0xc000067fc8 pc=0x41eb26
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc000067fe8 sp=0xc000067fe0 pc=0x47a861
created by runtime.gcenable
	/home/iant/go/src/runtime/mgc.go:179 +0xaa

goroutine 18 [finalizer wait]:
runtime.gopark(0x0?, 0x84a158?, 0xe0?, 0x1?, 0x2000000020?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc000066628 sp=0xc000066608 pc=0x43fab6
runtime.runfinq()
	/home/iant/go/src/runtime/mfinal.go:193 +0x107 fp=0xc0000667e0 sp=0xc000066628 pc=0x41db47
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc0000667e8 sp=0xc0000667e0 pc=0x47a861
created by runtime.createfing
	/home/iant/go/src/runtime/mfinal.go:163 +0x45

goroutine 270 [GC worker (idle), 7 minutes]:
runtime.gopark(0x0?, 0xc000069f98?, 0x19?, 0x97?, 0xc000069f98?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc000069f50 sp=0xc000069f30 pc=0x43fab6
runtime.gcBgMarkWorker()
	/home/iant/go/src/runtime/mgc.go:1275 +0xf1 fp=0xc000069fe0 sp=0xc000069f50 pc=0x4208f1
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc000069fe8 sp=0xc000069fe0 pc=0x47a861
created by runtime.gcBgMarkStartWorkers
	/home/iant/go/src/runtime/mgc.go:1199 +0x25

goroutine 252 [GC worker (idle), 7 minutes]:
runtime.gopark(0x0?, 0xc000069798?, 0x19?, 0x97?, 0xc000069798?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc000069750 sp=0xc000069730 pc=0x43fab6
runtime.gcBgMarkWorker()
	/home/iant/go/src/runtime/mgc.go:1275 +0xf1 fp=0xc0000697e0 sp=0xc000069750 pc=0x4208f1
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc0000697e8 sp=0xc0000697e0 pc=0x47a861
created by runtime.gcBgMarkStartWorkers
	/home/iant/go/src/runtime/mgc.go:1199 +0x25

goroutine 269 [GC worker (idle), 7 minutes]:
runtime.gopark(0x0?, 0xc000064f98?, 0x19?, 0x97?, 0xc000064f98?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc000064f50 sp=0xc000064f30 pc=0x43fab6
runtime.gcBgMarkWorker()
	/home/iant/go/src/runtime/mgc.go:1275 +0xf1 fp=0xc000064fe0 sp=0xc000064f50 pc=0x4208f1
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc000064fe8 sp=0xc000064fe0 pc=0x47a861
created by runtime.gcBgMarkStartWorkers
	/home/iant/go/src/runtime/mgc.go:1199 +0x25

goroutine 275 [GC worker (idle), 7 minutes]:
runtime.gopark(0x0?, 0xc0002ae798?, 0x19?, 0x97?, 0xc0002ae798?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc0002ae750 sp=0xc0002ae730 pc=0x43fab6
runtime.gcBgMarkWorker()
	/home/iant/go/src/runtime/mgc.go:1275 +0xf1 fp=0xc0002ae7e0 sp=0xc0002ae750 pc=0x4208f1
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc0002ae7e8 sp=0xc0002ae7e0 pc=0x47a861
created by runtime.gcBgMarkStartWorkers
	/home/iant/go/src/runtime/mgc.go:1199 +0x25

goroutine 276 [GC worker (idle), 7 minutes]:
runtime.gopark(0xc0002b5f60?, 0x0?, 0xb0?, 0x5f?, 0x50760b?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc0002b5f50 sp=0xc0002b5f30 pc=0x43fab6
runtime.gcBgMarkWorker()
	/home/iant/go/src/runtime/mgc.go:1275 +0xf1 fp=0xc0002b5fe0 sp=0xc0002b5f50 pc=0x4208f1
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc0002b5fe8 sp=0xc0002b5fe0 pc=0x47a861
created by runtime.gcBgMarkStartWorkers
	/home/iant/go/src/runtime/mgc.go:1199 +0x25

goroutine 271 [GC worker (idle), 7 minutes]:
runtime.gopark(0xc0002b4f60?, 0x0?, 0xb0?, 0x4f?, 0x50760b?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc0002b4f50 sp=0xc0002b4f30 pc=0x43fab6
runtime.gcBgMarkWorker()
	/home/iant/go/src/runtime/mgc.go:1275 +0xf1 fp=0xc0002b4fe0 sp=0xc0002b4f50 pc=0x4208f1
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc0002b4fe8 sp=0xc0002b4fe0 pc=0x47a861
created by runtime.gcBgMarkStartWorkers
	/home/iant/go/src/runtime/mgc.go:1199 +0x25

goroutine 277 [GC worker (idle), 7 minutes]:
runtime.gopark(0xc0002b5760?, 0x0?, 0xb0?, 0x57?, 0x50760b?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc0002b5750 sp=0xc0002b5730 pc=0x43fab6
runtime.gcBgMarkWorker()
	/home/iant/go/src/runtime/mgc.go:1275 +0xf1 fp=0xc0002b57e0 sp=0xc0002b5750 pc=0x4208f1
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc0002b57e8 sp=0xc0002b57e0 pc=0x47a861
created by runtime.gcBgMarkStartWorkers
	/home/iant/go/src/runtime/mgc.go:1199 +0x25

goroutine 278 [GC worker (idle), 7 minutes]:
runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc000504750 sp=0xc000504730 pc=0x43fab6
runtime.gcBgMarkWorker()
	/home/iant/go/src/runtime/mgc.go:1275 +0xf1 fp=0xc0005047e0 sp=0xc000504750 pc=0x4208f1
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc0005047e8 sp=0xc0005047e0 pc=0x47a861
created by runtime.gcBgMarkStartWorkers
	/home/iant/go/src/runtime/mgc.go:1199 +0x25

goroutine 272 [GC worker (idle), 7 minutes]:
runtime.gopark(0xc000064760?, 0x0?, 0xb0?, 0x47?, 0x50760b?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc000064750 sp=0xc000064730 pc=0x43fab6
runtime.gcBgMarkWorker()
	/home/iant/go/src/runtime/mgc.go:1275 +0xf1 fp=0xc0000647e0 sp=0xc000064750 pc=0x4208f1
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc0000647e8 sp=0xc0000647e0 pc=0x47a861
created by runtime.gcBgMarkStartWorkers
	/home/iant/go/src/runtime/mgc.go:1199 +0x25

goroutine 273 [GC worker (idle), 7 minutes]:
runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc000065f50 sp=0xc000065f30 pc=0x43fab6
runtime.gcBgMarkWorker()
	/home/iant/go/src/runtime/mgc.go:1275 +0xf1 fp=0xc000065fe0 sp=0xc000065f50 pc=0x4208f1
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc000065fe8 sp=0xc000065fe0 pc=0x47a861
created by runtime.gcBgMarkStartWorkers
	/home/iant/go/src/runtime/mgc.go:1199 +0x25

goroutine 279 [GC worker (idle), 7 minutes]:
runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc000504f50 sp=0xc000504f30 pc=0x43fab6
runtime.gcBgMarkWorker()
	/home/iant/go/src/runtime/mgc.go:1275 +0xf1 fp=0xc000504fe0 sp=0xc000504f50 pc=0x4208f1
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc000504fe8 sp=0xc000504fe0 pc=0x47a861
created by runtime.gcBgMarkStartWorkers
	/home/iant/go/src/runtime/mgc.go:1199 +0x25

goroutine 290 [GC worker (idle), 7 minutes]:
runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc000500750 sp=0xc000500730 pc=0x43fab6
runtime.gcBgMarkWorker()
	/home/iant/go/src/runtime/mgc.go:1275 +0xf1 fp=0xc0005007e0 sp=0xc000500750 pc=0x4208f1
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc0005007e8 sp=0xc0005007e0 pc=0x47a861
created by runtime.gcBgMarkStartWorkers
	/home/iant/go/src/runtime/mgc.go:1199 +0x25

goroutine 280 [GC worker (idle), 7 minutes]:
runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc000505750 sp=0xc000505730 pc=0x43fab6
runtime.gcBgMarkWorker()
	/home/iant/go/src/runtime/mgc.go:1275 +0xf1 fp=0xc0005057e0 sp=0xc000505750 pc=0x4208f1
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc0005057e8 sp=0xc0005057e0 pc=0x47a861
created by runtime.gcBgMarkStartWorkers
	/home/iant/go/src/runtime/mgc.go:1199 +0x25

goroutine 291 [GC worker (idle)]:
runtime.gopark(0xb04d40?, 0x1?, 0xa5?, 0x70?, 0x0?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc000500f50 sp=0xc000500f30 pc=0x43fab6
runtime.gcBgMarkWorker()
	/home/iant/go/src/runtime/mgc.go:1275 +0xf1 fp=0xc000500fe0 sp=0xc000500f50 pc=0x4208f1
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc000500fe8 sp=0xc000500fe0 pc=0x47a861
created by runtime.gcBgMarkStartWorkers
	/home/iant/go/src/runtime/mgc.go:1199 +0x25

goroutine 281 [GC worker (idle)]:
runtime.gopark(0xe274349cc582?, 0x1?, 0xbd?, 0x49?, 0x0?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc000505f50 sp=0xc000505f30 pc=0x43fab6
runtime.gcBgMarkWorker()
	/home/iant/go/src/runtime/mgc.go:1275 +0xf1 fp=0xc000505fe0 sp=0xc000505f50 pc=0x4208f1
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc000505fe8 sp=0xc000505fe0 pc=0x47a861
created by runtime.gcBgMarkStartWorkers
	/home/iant/go/src/runtime/mgc.go:1199 +0x25

goroutine 292 [GC worker (idle)]:
runtime.gopark(0xb04d40?, 0x1?, 0x9d?, 0x11?, 0x0?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc000501750 sp=0xc000501730 pc=0x43fab6
runtime.gcBgMarkWorker()
	/home/iant/go/src/runtime/mgc.go:1275 +0xf1 fp=0xc0005017e0 sp=0xc000501750 pc=0x4208f1
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc0005017e8 sp=0xc0005017e0 pc=0x47a861
created by runtime.gcBgMarkStartWorkers
	/home/iant/go/src/runtime/mgc.go:1199 +0x25

goroutine 1245 [syscall]:
syscall.Syscall6(0x6?, 0x0?, 0x0?, 0xc000502e50?, 0xc000502e50?, 0x476bdd?, 0x474d05?)
	/home/iant/go/src/syscall/syscall_linux.go:90 +0x36 fp=0xc000502e08 sp=0xc000502d80 pc=0x48c7d6
os.(*Process).blockUntilWaitable(0xc00002eff0)
	/home/iant/go/src/os/wait_waitid.go:32 +0x87 fp=0xc000502ee0 sp=0xc000502e08 pc=0x4b3647
os.(*Process).wait(0xc00002eff0)
	/home/iant/go/src/os/exec_unix.go:22 +0x28 fp=0xc000502f40 sp=0xc000502ee0 pc=0x4adc28
os.(*Process).Wait(...)
	/home/iant/go/src/os/exec.go:132
os/exec.(*Cmd).Wait(0xc0002ab080)
	/home/iant/go/src/os/exec/exec.go:890 +0x45 fp=0xc000502fa8 sp=0xc000502f40 pc=0x5411e5
runtime_test.TestSpuriousWakeupsNeverHangSemasleep.func2()
	/home/iant/go/src/runtime/semasleep_test.go:71 +0x26 fp=0xc000502fe0 sp=0xc000502fa8 pc=0x751646
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc000502fe8 sp=0xc000502fe0 pc=0x47a861
created by runtime_test.TestSpuriousWakeupsNeverHangSemasleep
	/home/iant/go/src/runtime/semasleep_test.go:70 +0x485

goroutine 1226 [select]:
runtime.gopark(0xc0002c2f38?, 0x2?, 0x73?, 0x3f?, 0xc0002c2e64?)
	/home/iant/go/src/runtime/proc.go:381 +0xd6 fp=0xc0002c2ce0 sp=0xc0002c2cc0 pc=0x43fab6
runtime.selectgo(0xc0002c2f38, 0xc0002c2e60, 0x8aedd8?, 0x0, 0x8ba3e61247?, 0x1)
	/home/iant/go/src/runtime/select.go:327 +0x7be fp=0xc0002c2e20 sp=0xc0002c2ce0 pc=0x44fffe
runtime_test.TestSpuriousWakeupsNeverHangSemasleep(0xc000140b60)
	/home/iant/go/src/runtime/semasleep_test.go:95 +0x596 fp=0xc0002c2f70 sp=0xc0002c2e20 pc=0x7513f6
testing.tRunner(0xc000140b60, 0x84c278)
	/home/iant/go/src/testing/testing.go:1575 +0x10b fp=0xc0002c2fc0 sp=0xc0002c2f70 pc=0x50760b
testing.(*T).Run.func1()
	/home/iant/go/src/testing/testing.go:1628 +0x2a fp=0xc0002c2fe0 sp=0xc0002c2fc0 pc=0x50864a
runtime.goexit()
	/home/iant/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc0002c2fe8 sp=0xc0002c2fe0 pc=0x47a861
created by testing.(*T).Run
	/home/iant/go/src/testing/testing.go:1628 +0x3ea
FAIL	runtime	600.014s
FAIL

@gopherbot
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Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "runtime" && test == "TestSpuriousWakeupsNeverHangSemasleep"
2022-12-01 20:58 linux-mips-rtrk go@cc1771e2 runtime.TestSpuriousWakeupsNeverHangSemasleep (log) 
--- FAIL: TestSpuriousWakeupsNeverHangSemasleep (20.57s)
    semasleep_test.go:56: read from testprog stdout: ready
    semasleep_test.go:98: Program failed to return on time and has to be killed, issue #27520 still exists

— watchflakes

@gopherbot
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Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "runtime" && test == "TestSpuriousWakeupsNeverHangSemasleep"
2023-01-09 21:50 linux-mips64le-rtrk go@64519baf runtime.TestSpuriousWakeupsNeverHangSemasleep (log) 
--- FAIL: TestSpuriousWakeupsNeverHangSemasleep (29.48s)
    semasleep_test.go:56: read from testprog stdout: ready
    semasleep_test.go:98: Program failed to return on time and has to be killed, issue #27520 still exists
2023-01-13 21:45 linux-mipsle-rtrk go@ebb572d8 runtime.TestSpuriousWakeupsNeverHangSemasleep (log) 
--- FAIL: TestSpuriousWakeupsNeverHangSemasleep (35.33s)
    semasleep_test.go:56: read from testprog stdout: ready
    semasleep_test.go:98: Program failed to return on time and has to be killed, issue #27520 still exists

— watchflakes

@gopherbot
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Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "runtime" && test == "TestSpuriousWakeupsNeverHangSemasleep"
2023-01-23 15:51 linux-mips64-rtrk go@e22bd234 runtime.TestSpuriousWakeupsNeverHangSemasleep (log) 
--- FAIL: TestSpuriousWakeupsNeverHangSemasleep (17.84s)
    semasleep_test.go:56: read from testprog stdout: ready
    semasleep_test.go:98: Program failed to return on time and has to be killed, issue #27520 still exists
2023-01-24 22:55 linux-mipsle-rtrk go@a37672bb runtime.TestSpuriousWakeupsNeverHangSemasleep (log) 
--- FAIL: TestSpuriousWakeupsNeverHangSemasleep (31.21s)
    semasleep_test.go:56: read from testprog stdout: ready
    semasleep_test.go:98: Program failed to return on time and has to be killed, issue #27520 still exists

— watchflakes

@gopherbot
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Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "runtime" && test == "TestSpuriousWakeupsNeverHangSemasleep"
2023-02-02 23:40 linux-mipsle-rtrk go@93f5335b runtime.TestSpuriousWakeupsNeverHangSemasleep (log) 
--- FAIL: TestSpuriousWakeupsNeverHangSemasleep (28.84s)
    semasleep_test.go:56: read from testprog stdout: ready
    semasleep_test.go:98: Program failed to return on time and has to be killed, issue #27520 still exists

— watchflakes

@gopherbot
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Author

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "runtime" && test == "TestSpuriousWakeupsNeverHangSemasleep"
2023-02-03 22:28 linux-mips-rtrk go@86c4b0a6 runtime.TestSpuriousWakeupsNeverHangSemasleep (log) 
--- FAIL: TestSpuriousWakeupsNeverHangSemasleep (29.06s)
    semasleep_test.go:56: read from testprog stdout: ready
    semasleep_test.go:98: Program failed to return on time and has to be killed, issue #27520 still exists

— watchflakes

@gopherbot
Copy link
Author

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "runtime" && test == "TestSpuriousWakeupsNeverHangSemasleep"
2023-02-02 23:40 linux-mips64-rtrk go@683b2c46 runtime.TestSpuriousWakeupsNeverHangSemasleep (log) 
--- FAIL: TestSpuriousWakeupsNeverHangSemasleep (19.62s)
    semasleep_test.go:56: read from testprog stdout: ready
    semasleep_test.go:98: Program failed to return on time and has to be killed, issue #27520 still exists
2023-02-10 18:56 linux-mips64le-rtrk go@851f6fd6 runtime.TestSpuriousWakeupsNeverHangSemasleep (log) 
--- FAIL: TestSpuriousWakeupsNeverHangSemasleep (34.29s)
    semasleep_test.go:56: read from testprog stdout: ready
    semasleep_test.go:98: Program failed to return on time and has to be killed, issue #27520 still exists
2023-02-14 16:52 linux-mips-rtrk go@66c58b94 runtime.TestSpuriousWakeupsNeverHangSemasleep (log) 
--- FAIL: TestSpuriousWakeupsNeverHangSemasleep (29.15s)
    semasleep_test.go:56: read from testprog stdout: ready
    semasleep_test.go:98: Program failed to return on time and has to be killed, issue #27520 still exists
2023-02-17 20:31 linux-mips64-rtrk go@990501e7 runtime.TestSpuriousWakeupsNeverHangSemasleep (log) 
--- FAIL: TestSpuriousWakeupsNeverHangSemasleep (25.92s)
    semasleep_test.go:56: read from testprog stdout: ready
    semasleep_test.go:98: Program failed to return on time and has to be killed, issue #27520 still exists

— watchflakes

@gopherbot
Copy link
Author

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "runtime" && test == "TestSpuriousWakeupsNeverHangSemasleep"
2023-02-27 18:39 linux-mips-rtrk go@8538477d runtime.TestSpuriousWakeupsNeverHangSemasleep (log) 
--- FAIL: TestSpuriousWakeupsNeverHangSemasleep (30.26s)
    semasleep_test.go:56: read from testprog stdout: ready
    semasleep_test.go:98: Program failed to return on time and has to be killed, issue #27520 still exists
2023-02-28 15:45 linux-mips64-rtrk go@21036ed0 runtime.TestSpuriousWakeupsNeverHangSemasleep (log) 
--- FAIL: TestSpuriousWakeupsNeverHangSemasleep (13.46s)
    semasleep_test.go:56: read from testprog stdout: ready
    semasleep_test.go:98: Program failed to return on time and has to be killed, issue #27520 still exists

— watchflakes

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compiler/runtime Issues related to the Go compiler and/or runtime. NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
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Go Compiler / Runtime
Status: Todo
Test Flakes
Status: Done
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@rsc @mknyszek @ianlancetaylor @gopherbot