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runtime: "traceback did not unwind completely" during preempt during strings_test init #69389

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gopherbot opened this issue Sep 11, 2024 · 14 comments
Open

runtime: "traceback did not unwind completely" during preempt during strings_test init #69389

gopherbot opened this issue Sep 11, 2024 · 14 comments
Labels
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-NetBSD
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Backlog

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@gopherbot
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#!watchflakes
default <- pkg == "strings" && test == ""

Issue created automatically to collect these failures.

Example (log):

runtime: g1: frame.sp=0x40001a7e10 top=0x40001c7fd0
	stack=[0x4000188000-0x40001c8000
fatal error: traceback did not unwind completely

runtime stack:
runtime.throw({0x1abac7?, 0x4000187d48?})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1069 +0x38 fp=0x4000187ba0 sp=0x4000187b70 pc=0x7d588
runtime.(*unwinder).finishInternal(0x4000187c08?)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/traceback.go:566 +0x110 fp=0x4000187be0 sp=0x4000187ba0 pc=0x6b3d0
runtime.(*unwinder).next(0x4000187cc0?)
...
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:435 +0xc8 fp=0x400004f710 sp=0x400004f6f0 pc=0x7d6a8
runtime.gcBgMarkWorker(0x400007e000)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1362 +0xdc fp=0x400004f7b0 sp=0x400004f710 pc=0x2713c
runtime.gcBgMarkStartWorkers.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1278 +0x28 fp=0x400004f7d0 sp=0x400004f7b0 pc=0x27028
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1223 +0x4 fp=0x400004f7d0 sp=0x400004f7d0 pc=0x84314
created by runtime.gcBgMarkStartWorkers in goroutine 1
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1278 +0x140
FAIL	strings	1.150s

— 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 == "strings" && test == ""
2024-09-10 21:10 gotip-netbsd-arm64 go@3da4281d strings (log) 
runtime: g1: frame.sp=0x40001a7e10 top=0x40001c7fd0
	stack=[0x4000188000-0x40001c8000
fatal error: traceback did not unwind completely

runtime stack:
runtime.throw({0x1abac7?, 0x4000187d48?})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1069 +0x38 fp=0x4000187ba0 sp=0x4000187b70 pc=0x7d588
runtime.(*unwinder).finishInternal(0x4000187c08?)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/traceback.go:566 +0x110 fp=0x4000187be0 sp=0x4000187ba0 pc=0x6b3d0
runtime.(*unwinder).next(0x4000187cc0?)
...
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:435 +0xc8 fp=0x400004f710 sp=0x400004f6f0 pc=0x7d6a8
runtime.gcBgMarkWorker(0x400007e000)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1362 +0xdc fp=0x400004f7b0 sp=0x400004f710 pc=0x2713c
runtime.gcBgMarkStartWorkers.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1278 +0x28 fp=0x400004f7d0 sp=0x400004f7b0 pc=0x27028
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1223 +0x4 fp=0x400004f7d0 sp=0x400004f7d0 pc=0x84314
created by runtime.gcBgMarkStartWorkers in goroutine 1
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1278 +0x140
FAIL	strings	1.150s

— watchflakes

@adonovan adonovan changed the title strings: unrecognized failures strings: "traceback did not unwind completely" during preempt during test init Sep 13, 2024
@adonovan adonovan changed the title strings: "traceback did not unwind completely" during preempt during test init runtime: "traceback did not unwind completely" during preempt during strings_test init Sep 13, 2024
@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Sep 13, 2024
@mknyszek mknyszek added this to the Backlog milestone Sep 18, 2024
@mknyszek
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CC @golang/netbsd

@gopherbot
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Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "strings" && test == ""
2024-10-18 23:13 gotip-netbsd-arm64 go@488e2d18 strings (log) 
runtime: g1: frame.sp=0x400019fe10 top=0x40001bffd0
	stack=[0x4000180000-0x40001c0000
fatal error: traceback did not unwind completely

runtime stack:
runtime.throw({0x1abe5c?, 0x400006fd48?})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1074 +0x38 fp=0x400006fba0 sp=0x400006fb70 pc=0x7d948
runtime.(*unwinder).finishInternal(0x400006fc08?)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/traceback.go:566 +0x110 fp=0x400006fbe0 sp=0x400006fba0 pc=0x6b770
runtime.(*unwinder).next(0x400006fcc0?)
...
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:435 +0xc8 fp=0x400050cf10 sp=0x400050cef0 pc=0x7da68
runtime.gcBgMarkWorker(0x400010a0e0)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1363 +0xdc fp=0x400050cfb0 sp=0x400050cf10 pc=0x2713c
runtime.gcBgMarkStartWorkers.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1279 +0x28 fp=0x400050cfd0 sp=0x400050cfb0 pc=0x27028
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1223 +0x4 fp=0x400050cfd0 sp=0x400050cfd0 pc=0x846d4
created by runtime.gcBgMarkStartWorkers in goroutine 1
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1279 +0x140
FAIL	strings	0.382s

— watchflakes

@gopherbot
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Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "strings" && test == ""
2024-11-15 17:47 gotip-netbsd-arm64 go@09f9b5e3 strings (log) 
runtime: g1: frame.sp=0x400019fe10 top=0x40001bffd0
	stack=[0x4000180000-0x40001c0000
fatal error: traceback did not unwind completely

runtime stack:
runtime.throw({0x1aea73?, 0x400006bd48?})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1084 +0x38 fp=0x400006bba0 sp=0x400006bb70 pc=0x77c78
runtime.(*unwinder).finishInternal(0x400006bc08?)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/traceback.go:566 +0x110 fp=0x400006bbe0 sp=0x400006bba0 pc=0x68e80
runtime.(*unwinder).next(0x400006bcc0?)
...
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:435 +0xc8 fp=0x400004df10 sp=0x400004def0 pc=0x77d98
runtime.gcBgMarkWorker(0x400007e0e0)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1412 +0xdc fp=0x400004dfb0 sp=0x400004df10 pc=0x2576c
runtime.gcBgMarkStartWorkers.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1328 +0x28 fp=0x400004dfd0 sp=0x400004dfb0 pc=0x25658
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1260 +0x4 fp=0x400004dfd0 sp=0x400004dfd0 pc=0x7ea04
created by runtime.gcBgMarkStartWorkers in goroutine 1
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1328 +0x140
FAIL	strings	0.614s

— watchflakes

@fr0xk
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fr0xk commented Nov 16, 2024 •
edited
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The error indicates stack corruption, likely caused by unsafe pointer operations, CGO issues, or concurrent stack modifications. The stack pointer mismatch (frame.sp=0x40001a7e10 top=0x40001c7fd0) and failed stack trace unwinding suggest the garbage collector couldn't clean up due to inconsistent state. Since this happens during goroutine preemption and test initialization (strings_test init), the issue is likely to involve with package-level variables or init() functions.

@gopherbot
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Contributor Author

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "strings" && test == ""
2024-11-19 23:24 gotip-netbsd-arm64 go@fb7f4f97 strings (log) 
runtime: g1: frame.sp=0x400011fe10 top=0x400013ffd0
	stack=[0x4000100000-0x4000140000
fatal error: traceback did not unwind completely

runtime stack:
runtime.throw({0x1b1b41?, 0x400006bd58?})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1099 +0x38 fp=0x400006bbc0 sp=0x400006bb90 pc=0x78d98
runtime.(*unwinder).finishInternal(0x400006bc28?)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/traceback.go:566 +0x110 fp=0x400006bc00 sp=0x400006bbc0 pc=0x69c40
runtime.(*unwinder).next(0x400006bcd0?)
...
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:435 +0xc8 fp=0x4000053710 sp=0x40000536f0 pc=0x78eb8
runtime.gcBgMarkWorker(0x4000392000)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1423 +0xdc fp=0x40000537b0 sp=0x4000053710 pc=0x25c7c
runtime.gcBgMarkStartWorkers.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1339 +0x28 fp=0x40000537d0 sp=0x40000537b0 pc=0x25b68
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1260 +0x4 fp=0x40000537d0 sp=0x40000537d0 pc=0x7fcd4
created by runtime.gcBgMarkStartWorkers in goroutine 1
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1339 +0x140
FAIL	strings	2.089s

— watchflakes

@gopherbot
Copy link
Contributor Author

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "strings" && test == ""
2024-12-11 20:29 go1.24-netbsd-arm64 release-branch.go1.24@5424f2e2 strings (log) 
runtime: g1: frame.sp=0x400019fe10 top=0x40001bffd0
	stack=[0x4000180000-0x40001c0000
fatal error: traceback did not unwind completely

runtime stack:
runtime.throw({0x1b1b92?, 0x400006bd58?})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1099 +0x38 fp=0x400006bbc0 sp=0x400006bb90 pc=0x78d28
runtime.(*unwinder).finishInternal(0x400006bc28?)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/traceback.go:566 +0x110 fp=0x400006bc00 sp=0x400006bbc0 pc=0x69be0
runtime.(*unwinder).next(0x400006bcd0?)
...
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:435 +0xc8 fp=0x40004f7710 sp=0x40004f76f0 pc=0x78e48
runtime.gcBgMarkWorker(0x4000114000)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1423 +0xdc fp=0x40004f77b0 sp=0x40004f7710 pc=0x25c3c
runtime.gcBgMarkStartWorkers.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1339 +0x28 fp=0x40004f77d0 sp=0x40004f77b0 pc=0x25b28
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1260 +0x4 fp=0x40004f77d0 sp=0x40004f77d0 pc=0x7fc64
created by runtime.gcBgMarkStartWorkers in goroutine 1
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1339 +0x140
FAIL	strings	1.251s

— watchflakes

@gopherbot
Copy link
Contributor Author

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "strings" && test == ""
2024-12-09 15:27 go1.24-netbsd-arm64 release-branch.go1.24@e79b2e1e strings (log) 
runtime: g1: frame.sp=0x400011fe10 top=0x400013ffd0
	stack=[0x4000100000-0x4000140000
fatal error: traceback did not unwind completely

runtime stack:
runtime.throw({0x1b1bb6?, 0x400006fd58?})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1099 +0x38 fp=0x400006fbc0 sp=0x400006fb90 pc=0x78d38
runtime.(*unwinder).finishInternal(0x400006fc28?)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/traceback.go:566 +0x110 fp=0x400006fc00 sp=0x400006fbc0 pc=0x69bf0
runtime.(*unwinder).next(0x400006fcd0?)
...
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:435 +0xc8 fp=0x4000505710 sp=0x40005056f0 pc=0x78e58
runtime.gcBgMarkWorker(0x4000384000)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1423 +0xdc fp=0x40005057b0 sp=0x4000505710 pc=0x25c3c
runtime.gcBgMarkStartWorkers.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1339 +0x28 fp=0x40005057d0 sp=0x40005057b0 pc=0x25b28
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1260 +0x4 fp=0x40005057d0 sp=0x40005057d0 pc=0x7fc74
created by runtime.gcBgMarkStartWorkers in goroutine 1
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1339 +0x140
FAIL	strings	0.616s

— watchflakes

@gopherbot
Copy link
Contributor Author

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "strings" && test == ""
2025-01-08 17:25 gotip-netbsd-arm64 go@f025d19e strings (log) 
runtime: g1: frame.sp=0x400019fe10 top=0x40001bffd0
	stack=[0x4000180000-0x40001c0000
fatal error: traceback did not unwind completely

runtime stack:
runtime.throw({0x1b16f1?, 0x40000c1d58?})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1099 +0x38 fp=0x40000c1bc0 sp=0x40000c1b90 pc=0x7f178
runtime.(*unwinder).finishInternal(0x40000c1c28?)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/traceback.go:566 +0x110 fp=0x40000c1c00 sp=0x40000c1bc0 pc=0x6fe90
runtime.(*unwinder).next(0x40000c1cd0?)
...
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:435 +0xc8 fp=0x400004d710 sp=0x400004d6f0 pc=0x7f298
runtime.gcBgMarkWorker(0x40000a8000)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1423 +0xdc fp=0x400004d7b0 sp=0x400004d710 pc=0x2befc
runtime.gcBgMarkStartWorkers.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1339 +0x28 fp=0x400004d7d0 sp=0x400004d7b0 pc=0x2bde8
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1260 +0x4 fp=0x400004d7d0 sp=0x400004d7d0 pc=0x860b4
created by runtime.gcBgMarkStartWorkers in goroutine 1
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1339 +0x140
FAIL	strings	0.343s

— watchflakes

@gopherbot
Copy link
Contributor Author

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "strings" && test == ""
2025-02-19 17:12 go1.24-netbsd-arm64 release-branch.go1.24@cd0e528d strings (log) 
runtime: g1: frame.sp=0x400019fe10 top=0x40001bffd0
	stack=[0x4000180000-0x40001c0000
fatal error: traceback did not unwind completely

runtime stack:
runtime.throw({0x1b179b?, 0x4000095d58?})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1096 +0x38 fp=0x4000095bc0 sp=0x4000095b90 pc=0x7eac8
runtime.(*unwinder).finishInternal(0x4000095c28?)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/traceback.go:566 +0x110 fp=0x4000095c00 sp=0x4000095bc0 pc=0x6f8e0
runtime.(*unwinder).next(0x4000095cd0?)
...
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:435 +0xc8 fp=0x4000053f10 sp=0x4000053ef0 pc=0x7ebe8
runtime.gcBgMarkWorker(0x40003f4000)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1423 +0xdc fp=0x4000053fb0 sp=0x4000053f10 pc=0x2bfac
runtime.gcBgMarkStartWorkers.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1339 +0x28 fp=0x4000053fd0 sp=0x4000053fb0 pc=0x2be98
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1223 +0x4 fp=0x4000053fd0 sp=0x4000053fd0 pc=0x86054
created by runtime.gcBgMarkStartWorkers in goroutine 1
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1339 +0x140
FAIL	strings	0.555s

— watchflakes

@gopherbot
Copy link
Contributor Author

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "strings" && test == ""
2025-02-19 22:50 gotip-netbsd-arm64 go@0d8c512c strings (log) 
runtime: g1: frame.sp=0x400019fe10 top=0x40001bffd0
	stack=[0x4000180000-0x40001c0000
fatal error: traceback did not unwind completely

runtime stack:
runtime.throw({0x1b1e94?, 0x4000515d68?})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1113 +0x34 fp=0x4000515bd0 sp=0x4000515ba0 pc=0x7d864
runtime.(*unwinder).finishInternal(0x4000515c38?)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/traceback.go:566 +0x10c fp=0x4000515c10 sp=0x4000515bd0 pc=0x6e8cc
runtime.(*unwinder).next(0x4000515ce0?)
...
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:435 +0xc0 fp=0x4000172f10 sp=0x4000172ef0 pc=0x7d970
runtime.gcBgMarkWorker(0x400007e0e0)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1431 +0xdc fp=0x4000172fb0 sp=0x4000172f10 pc=0x2bc5c
runtime.gcBgMarkStartWorkers.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1347 +0x28 fp=0x4000172fd0 sp=0x4000172fb0 pc=0x2bb48
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1273 +0x4 fp=0x4000172fd0 sp=0x4000172fd0 pc=0x84cd4
created by runtime.gcBgMarkStartWorkers in goroutine 1
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1347 +0x140
FAIL	strings	0.887s

— watchflakes

@gopherbot
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Contributor Author

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "strings" && test == ""
2025-03-20 00:33 gotip-netbsd-arm64 go@f2337398 strings (log) 
runtime: g1: frame.sp=0x400019fe10 top=0x40001bffd0
	stack=[0x4000180000-0x40001c0000
fatal error: traceback did not unwind completely

runtime stack:
runtime.throw({0x213732?, 0x4000095d68?})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1089 +0x34 fp=0x4000095bd0 sp=0x4000095ba0 pc=0x7ec54
runtime.(*unwinder).finishInternal(0x4000095c38?)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/traceback.go:566 +0x10c fp=0x4000095c10 sp=0x4000095bd0 pc=0x6f64c
runtime.(*unwinder).next(0x4000095ce0?)
...
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:458 +0xc0 fp=0x400004df10 sp=0x400004def0 pc=0x7ed60
runtime.gcBgMarkWorker(0x40000a8000)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1431 +0xdc fp=0x400004dfb0 sp=0x400004df10 pc=0x2c28c
runtime.gcBgMarkStartWorkers.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1347 +0x28 fp=0x400004dfd0 sp=0x400004dfb0 pc=0x2c178
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1266 +0x4 fp=0x400004dfd0 sp=0x400004dfd0 pc=0x863b4
created by runtime.gcBgMarkStartWorkers in goroutine 1
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1347 +0x140
FAIL	strings	0.417s

— watchflakes

@gopherbot
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Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "strings" && test == ""
2025-03-27 12:52 gotip-netbsd-arm64 go@d88f93f7 strings (log) 
runtime: g1: frame.sp=0x400019fe10 top=0x40001bffd0
	stack=[0x4000180000-0x40001c0000
fatal error: traceback did not unwind completely

runtime stack:
runtime.throw({0x213a94?, 0x4000095d68?})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1089 +0x34 fp=0x4000095bd0 sp=0x4000095ba0 pc=0x7ecc4
runtime.(*unwinder).finishInternal(0x4000095c38?)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/traceback.go:566 +0x10c fp=0x4000095c10 sp=0x4000095bd0 pc=0x6f69c
runtime.(*unwinder).next(0x4000095ce0?)
...
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:458 +0xc0 fp=0x400004ef10 sp=0x400004eef0 pc=0x7edd0
runtime.gcBgMarkWorker(0x400007e0e0)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1431 +0xdc fp=0x400004efb0 sp=0x400004ef10 pc=0x2c28c
runtime.gcBgMarkStartWorkers.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1347 +0x28 fp=0x400004efd0 sp=0x400004efb0 pc=0x2c178
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1266 +0x4 fp=0x400004efd0 sp=0x400004efd0 pc=0x86424
created by runtime.gcBgMarkStartWorkers in goroutine 1
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1347 +0x140
FAIL	strings	0.504s

— watchflakes

@gopherbot
Copy link
Contributor Author

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "strings" && test == ""
2025-03-31 15:20 gotip-netbsd-arm64 go@eec3745b strings (log) 
runtime: g1: frame.sp=0x400019fe10 top=0x40001bffd0
	stack=[0x4000180000-0x40001c0000
fatal error: traceback did not unwind completely

runtime stack:
runtime.throw({0x213ab4?, 0x400006bd68?})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:1089 +0x34 fp=0x400006bbd0 sp=0x400006bba0 pc=0x7ec64
runtime.(*unwinder).finishInternal(0x400006bc38?)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/traceback.go:566 +0x10c fp=0x400006bc10 sp=0x400006bbd0 pc=0x6f64c
runtime.(*unwinder).next(0x400006bce0?)
...
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:458 +0xc0 fp=0x400004e710 sp=0x400004e6f0 pc=0x7ed70
runtime.gcBgMarkWorker(0x40000a8000)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1431 +0xdc fp=0x400004e7b0 sp=0x400004e710 pc=0x2c29c
runtime.gcBgMarkStartWorkers.gowrap1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1347 +0x28 fp=0x400004e7d0 sp=0x400004e7b0 pc=0x2c188
runtime.goexit({})
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm64.s:1266 +0x4 fp=0x400004e7d0 sp=0x400004e7d0 pc=0x863c4
created by runtime.gcBgMarkStartWorkers in goroutine 1
	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1347 +0x140
FAIL	strings	0.643s

— watchflakes

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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-NetBSD
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@mknyszek @gopherbot @fr0xk