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cmd/compile/internal/ir: panic in IsSynthetic on openbsd/arm64 #61686

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gopherbot opened this issue Aug 1, 2023 · 4 comments
Open

cmd/compile/internal/ir: panic in IsSynthetic on openbsd/arm64 #61686

gopherbot opened this issue Aug 1, 2023 · 4 comments
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arch-arm64 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. OS-OpenBSD

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@gopherbot
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gopherbot commented Aug 1, 2023 •
edited by bcmills
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#!watchflakes
post <- goos == "openbsd" && goarch == "arm64" && log ~ `panic: runtime error: invalid memory address or nil pointer dereference` && log ~ `^cmd/compile/internal/ir\.IsSynthetic`

Issue created automatically to collect these failures.

Example (log):

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x28 pc=0x32509c]

goroutine 10 [running]:
cmd/compile/internal/ir.IsSynthetic(...)
	cmd/compile/internal/ir/node.go:68
cmd/compile/internal/ssa.BuildFuncDebug(0x83e600?, 0x4000a941a0, 0x40002172c0?, 0x9?, 0x4000b15400)
	cmd/compile/internal/ssa/debug.go:600 +0xb2c
cmd/compile/internal/ssagen.genssa(0x4000a941a0, 0x4000e38af0)
	cmd/compile/internal/ssagen/ssa.go:7327 +0xe00
cmd/compile/internal/ssagen.Compile(0x40004869a0, 0x40006e6000?)
	cmd/compile/internal/ssagen/pgen.go:197 +0x280
cmd/compile/internal/gc.compileFunctions.func5.1(0x40006e6060?)
	cmd/compile/internal/gc/compile.go:184 +0x3c
cmd/compile/internal/gc.compileFunctions.func3.1()
	cmd/compile/internal/gc/compile.go:166 +0x3c
created by cmd/compile/internal/gc.compileFunctions.func3 in goroutine 9
	cmd/compile/internal/gc/compile.go:165 +0x1d8
go tool dist: FAILED: /home/gopher/build/go/pkg/tool/openbsd_arm64/go_bootstrap install std: exit status 1

— 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 1, 2023
@gopherbot
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Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "encoding/asn1" && test == ""
2023-07-26 11:14 openbsd-arm64-jsing sys@104d4017 go@ee61186b encoding/asn1 [build] (log) 
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x28 pc=0x32509c]

goroutine 10 [running]:
cmd/compile/internal/ir.IsSynthetic(...)
	cmd/compile/internal/ir/node.go:68
cmd/compile/internal/ssa.BuildFuncDebug(0x83e600?, 0x4000a941a0, 0x40002172c0?, 0x9?, 0x4000b15400)
	cmd/compile/internal/ssa/debug.go:600 +0xb2c
cmd/compile/internal/ssagen.genssa(0x4000a941a0, 0x4000e38af0)
	cmd/compile/internal/ssagen/ssa.go:7327 +0xe00
cmd/compile/internal/ssagen.Compile(0x40004869a0, 0x40006e6000?)
	cmd/compile/internal/ssagen/pgen.go:197 +0x280
cmd/compile/internal/gc.compileFunctions.func5.1(0x40006e6060?)
	cmd/compile/internal/gc/compile.go:184 +0x3c
cmd/compile/internal/gc.compileFunctions.func3.1()
	cmd/compile/internal/gc/compile.go:166 +0x3c
created by cmd/compile/internal/gc.compileFunctions.func3 in goroutine 9
	cmd/compile/internal/gc/compile.go:165 +0x1d8
go tool dist: FAILED: /home/gopher/build/go/pkg/tool/openbsd_arm64/go_bootstrap install std: exit status 1

— watchflakes

@bcmills bcmills 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 8, 2023

This is a crash in the compiler, not an error relating to the encoding/asn1 package.

(@cherrymui, perhaps the watchflakes heuristics could be improved to better distinguish between a compiler panic and an error emitted by the compiler?)

@bcmills bcmills changed the title encoding/asn1: unrecognized failures cmd/compile/internal/ir: panic in IsSynthetic on openbsd/arm64 Aug 8, 2023
@bcmills
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bcmills commented Aug 8, 2023

(attn @golang/openbsd @4a6f656c)

@mknyszek
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mknyszek commented Aug 9, 2023

Unlikely to be an actual error in the logic of the compiler, more likely to be some kind of memory corruption.

@mknyszek mknyszek mentioned this issue Aug 9, 2023
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arch-arm64 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. OS-OpenBSD
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