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runtime: "marked free object in span" crash in malloc (wasm) #69410

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gopherbot opened this issue Sep 11, 2024 · 2 comments
Closed

runtime: "marked free object in span" crash in malloc (wasm) #69410

gopherbot opened this issue Sep 11, 2024 · 2 comments
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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. Tools This label describes issues relating to any tools in the x/tools repository.
Milestone
Unreleased

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@gopherbot
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#!watchflakes
default <- pkg == "golang.org/x/tools/go/ssa" && test == "TestTypeparamTest/ifaceconv.go"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestTypeparamTest/ifaceconv.go
    builder_test.go:805: Input: /home/swarming/.swarming/w/ir/x/w/goroot/test/typeparam/ifaceconv.go
runtime: marked free object in span 0x1c808f8, elemsize=288 freeindex=0 (bad use of unsafe.Pointer? try -d=checkptr)
0x10b00000 free  marked   zombie
0x0000000010b00000:  0x0000000000000015  0x00000000004c1620 
0x0000000010b00010:  0x0000000000000001  0x0000000000000000 
0x0000000010b00020:  0x0000000000000000  0x0000000000000000 
0x0000000010b00030:  0x0000000000000000  0x0000000000000000 
0x0000000010b00040:  0x0000000000000000  0x0000000000000000 
0x0000000010b00050:  0x0000000000000000  0x0000000000000000 
...
fatal error: found pointer to free object

goroutine 737 gp=0x20b1880 m=0 mp=0x4d9a60 [running]:
runtime.throw({0xb8a4e, 0x1c})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1023 +0x3 fp=0x182d598 sp=0x182d570 pc=0x128a0003
runtime.(*mspan).reportZombies(0x1c808f8)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgcsweep.go:875 +0x61 fp=0x182d608 sp=0x182d598 pc=0x11b40061
runtime.(*sweepLocked).sweep(0x182d768, 0x1)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgcsweep.go:638 +0x7a fp=0x182d728 sp=0x182d608 pc=0x11af007a
runtime.(*mcentral).cacheSpan(0x4e4c78)
...
golang.org/x/tools/go/ssa_test.TestTypeparamTest.func1(0xf37f6c0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo3091732262/go/ssa/builder_test.go:832 +0x4d fp=0x2349f60 sp=0x2349df0 pc=0x2a17004d
testing.tRunner(0xf37f6c0, 0x7168d98)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1689 +0xd fp=0x2349fc8 sp=0x2349f60 pc=0x1a2c000d
testing.(*T).Run.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1742 +0x2 fp=0x2349fe0 sp=0x2349fc8 pc=0x1a320002
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_wasm.s:434 +0x1 fp=0x2349fe8 sp=0x2349fe0 pc=0x153c0001
created by testing.(*T).Run in goroutine 567
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1742 +0x43

— 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 11, 2024
@gopherbot
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Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/tools/go/ssa" && test == "TestTypeparamTest/ifaceconv.go"
2024-09-11 21:04 x_tools-go1.22-wasip1-wasm_wasmtime tools@94ac686d release-branch.go1.22@6fab4b9a x/tools/go/ssa.TestTypeparamTest/ifaceconv.go [ABORT] (log) 
=== RUN   TestTypeparamTest/ifaceconv.go
    builder_test.go:805: Input: /home/swarming/.swarming/w/ir/x/w/goroot/test/typeparam/ifaceconv.go
runtime: marked free object in span 0x1c808f8, elemsize=288 freeindex=0 (bad use of unsafe.Pointer? try -d=checkptr)
0x10b00000 free  marked   zombie
0x0000000010b00000:  0x0000000000000015  0x00000000004c1620 
0x0000000010b00010:  0x0000000000000001  0x0000000000000000 
0x0000000010b00020:  0x0000000000000000  0x0000000000000000 
0x0000000010b00030:  0x0000000000000000  0x0000000000000000 
0x0000000010b00040:  0x0000000000000000  0x0000000000000000 
0x0000000010b00050:  0x0000000000000000  0x0000000000000000 
...
fatal error: found pointer to free object

goroutine 737 gp=0x20b1880 m=0 mp=0x4d9a60 [running]:
runtime.throw({0xb8a4e, 0x1c})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1023 +0x3 fp=0x182d598 sp=0x182d570 pc=0x128a0003
runtime.(*mspan).reportZombies(0x1c808f8)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgcsweep.go:875 +0x61 fp=0x182d608 sp=0x182d598 pc=0x11b40061
runtime.(*sweepLocked).sweep(0x182d768, 0x1)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgcsweep.go:638 +0x7a fp=0x182d728 sp=0x182d608 pc=0x11af007a
runtime.(*mcentral).cacheSpan(0x4e4c78)
...
golang.org/x/tools/go/ssa_test.TestTypeparamTest.func1(0xf37f6c0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo3091732262/go/ssa/builder_test.go:832 +0x4d fp=0x2349f60 sp=0x2349df0 pc=0x2a17004d
testing.tRunner(0xf37f6c0, 0x7168d98)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1689 +0xd fp=0x2349fc8 sp=0x2349f60 pc=0x1a2c000d
testing.(*T).Run.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1742 +0x2 fp=0x2349fe0 sp=0x2349fc8 pc=0x1a320002
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_wasm.s:434 +0x1 fp=0x2349fe8 sp=0x2349fe0 pc=0x153c0001
created by testing.(*T).Run in goroutine 567
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:1742 +0x43

— watchflakes

@gopherbot gopherbot added the Tools This label describes issues relating to any tools in the x/tools repository. label Sep 11, 2024
@gopherbot gopherbot added this to the Unreleased milestone Sep 11, 2024
@adonovan adonovan changed the title x/tools/go/ssa: TestTypeparamTest/ifaceconv.go failures runtime: "marked free object in span" crash in malloc (wasm) Sep 12, 2024
@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Sep 12, 2024
@adonovan adonovan mentioned this issue Sep 12, 2024
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@gopherbot
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Change https://go.dev/cl/612855 mentions this issue: go/ssa: go/ssa: disable TestTypeparamTest on wasm

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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. Tools This label describes issues relating to any tools in the x/tools repository.
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