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sync: TestCondBroadcast failures #61874

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gopherbot opened this issue Aug 8, 2023 · 6 comments
Closed

sync: TestCondBroadcast failures #61874

gopherbot opened this issue Aug 8, 2023 · 6 comments
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arch-riscv Issues solely affecting the riscv64 architecture. compiler/runtime Issues related to the Go compiler and/or runtime. help wanted NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
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Backlog

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@gopherbot
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gopherbot commented Aug 8, 2023 •
edited by bcmills 

#!watchflakes
post <- pkg == "sync" && test == "TestCondBroadcast" && goarch == "riscv64" && date < "2023-08-25"

Issue created automatically to collect these failures.

Example (log):

panic: test timed out after 12m0s
running tests:
	TestCondBroadcast (12m0s)

runtime.gopark(0x3f88054180?, 0x3f8822a000?, 0x6?, 0x0?, 0x779a0?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/proc.go:398 +0x10c fp=0x3f88036640 sp=0x3f88036628 pc=0x49f0c
runtime.chanrecv(0x3f880aa700, 0x3f88036720, 0x1?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/chan.go:583 +0x430 fp=0x3f880366b8 sp=0x3f88036640 pc=0x15178
runtime.chanrecv1(0x295500?, 0xc8?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/chan.go:442 +0x14 fp=0x3f880366d8 sp=0x3f880366b8 pc=0x14d2c
sync_test.TestCondBroadcast(0x3f88082340)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/sync/cond_test.go:116 +0x3f8 fp=0x3f88036778 sp=0x3f880366d8 pc=0x1199e0
testing.tRunner(0x3f88082340, 0x17c2a8)

— 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 Aug 8, 2023
@gopherbot
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Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "sync" && test == "TestCondBroadcast"
2023-08-08 17:51 linux-riscv64-unmatched go@0c13bd63 sync.TestCondBroadcast (log) 
panic: test timed out after 12m0s
running tests:
	TestCondBroadcast (12m0s)

runtime.gopark(0x3f88054180?, 0x3f8822a000?, 0x6?, 0x0?, 0x779a0?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/proc.go:398 +0x10c fp=0x3f88036640 sp=0x3f88036628 pc=0x49f0c
runtime.chanrecv(0x3f880aa700, 0x3f88036720, 0x1?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/chan.go:583 +0x430 fp=0x3f880366b8 sp=0x3f88036640 pc=0x15178
runtime.chanrecv1(0x295500?, 0xc8?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/chan.go:442 +0x14 fp=0x3f880366d8 sp=0x3f880366b8 pc=0x14d2c
sync_test.TestCondBroadcast(0x3f88082340)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/sync/cond_test.go:116 +0x3f8 fp=0x3f88036778 sp=0x3f880366d8 pc=0x1199e0
testing.tRunner(0x3f88082340, 0x17c2a8)

— watchflakes

@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Aug 8, 2023
@bcmills
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bcmills commented Aug 9, 2023

(attn @golang/riscv64)

@mknyszek mknyszek added this to the Backlog milestone Aug 9, 2023
@mknyszek mknyszek added help wanted arch-riscv Issues solely affecting the riscv64 architecture. labels Aug 9, 2023
@mengzhuo
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I ran 10000 Broadcast test without issue.

@bcmills
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bcmills commented Aug 15, 2023

A lot of these low-level hard-to-reproduce bugs turn out to be corruption in signal handlers. Maybe the failure depends on some other (perhaps CPU-bound) test running concurrently, causing the runtime to self-signal for preemption?

@gopherbot
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Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "sync" && test == "TestCondBroadcast" && goarch == "riscv64"
2023-08-09 14:36 linux-riscv64-unmatched go@288fd6eb sync.TestCondBroadcast (log) 
panic: test timed out after 8m0s
running tests:
	TestCondBroadcast (8m0s)

runtime.gopark(0x3fa000e240?, 0x3fa01dd1e0?, 0x6?, 0x0?, 0x77a30?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/proc.go:398 +0x10c fp=0x3fa0036640 sp=0x3fa0036628 pc=0x49f2c
runtime.chanrecv(0x3fa019a700, 0x3fa0036720, 0x1?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/chan.go:583 +0x430 fp=0x3fa00366b8 sp=0x3fa0036640 pc=0x15178
runtime.chanrecv1(0x295500?, 0xc8?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/chan.go:442 +0x14 fp=0x3fa00366d8 sp=0x3fa00366b8 pc=0x14d2c
sync_test.TestCondBroadcast(0x3fa0192000)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/sync/cond_test.go:116 +0x3f8 fp=0x3fa0036778 sp=0x3fa00366d8 pc=0x119a48
testing.tRunner(0x3fa0192000, 0x17c2a8)

— watchflakes

@mengzhuo
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Related: #62185
Closed.

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arch-riscv Issues solely affecting the riscv64 architecture. compiler/runtime Issues related to the Go compiler and/or runtime. help wanted NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
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@mengzhuo @mknyszek @bcmills @gopherbot