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sync: bad mutex state on RISC-V #62100

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mknyszek opened this issue Aug 17, 2023 · 2 comments
Closed

sync: bad mutex state on RISC-V #62100

mknyszek opened this issue Aug 17, 2023 · 2 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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@mknyszek
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mknyszek commented Aug 17, 2023 •
edited 

#!watchflakes
post <- log ~ `fatal error: sync:.*mutex` && builder == "linux-riscv64-unmatched"

2023-07-31 22:18 linux-riscv64-unmatched go@be0e0b06 cmd/go/internal/par.TestWork (log)
2023-08-01 13:51 linux-riscv64-unmatched go@91387436 cmd/go/internal/par.TestWork (log)
2023-08-02 15:24 linux-riscv64-unmatched go@0f1491de cmd/go/internal/par.TestWork (log)
2023-08-07 23:13 linux-riscv64-unmatched go@3393155a cmd/go/internal/par.TestWork (log)

CC @golang/riscv64
@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Aug 17, 2023
@mknyszek mknyszek mentioned this issue Aug 17, 2023
Open
@dmitshur dmitshur added NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. arch-riscv Issues solely affecting the riscv64 architecture. labels Aug 17, 2023
@dmitshur dmitshur added this to the Backlog milestone Aug 17, 2023
@gopherbot
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Found new dashboard test flakes for:

#!watchflakes
post <- log ~ `fatal error: sync:.*mutex` && builder == "linux-riscv64-unmatched"
2023-07-31 22:18 linux-riscv64-unmatched go@be0e0b06 cmd/go/internal/par.TestWork (log) 
fatal error: sync: unlock of unlocked mutex

runtime.gopark(0x3f880aa180?, 0x1?, 0xac?, 0xa1?, 0x1e?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/proc.go:398 +0x10c fp=0x3f8809fd50 sp=0x3f8809fd38 pc=0x4957c
runtime.goparkunlock(...)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/proc.go:404
runtime.semacquire1(0x3f880e2014, 0x0?, 0x3, 0x1, 0x94?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/sema.go:160 +0x218 fp=0x3f8809fda0 sp=0x3f8809fd50 pc=0x59fd0
sync.runtime_SemacquireMutex(0x24ece0?, 0x94?, 0x3f880e2014?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/sema.go:77 +0x44 fp=0x3f8809fdd0 sp=0x3f8809fda0 pc=0x75494
sync.(*Mutex).lockSlow(0x3f880e2010)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/sync/mutex.go:171 +0x180 fp=0x3f8809fe20 sp=0x3f8809fdd0 pc=0x7e860
sync.(*Mutex).Lock(...)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/sync/mutex.go:90
cmd/go/internal/par.(*Work[...]).Add(0x176d80, 0x128e)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/cmd/go/internal/par/work.go:36 +0x80 fp=0x3f8809fe80 sp=0x3f8809fe20 pc=0x1038a8
cmd/go/internal/par.TestWork.func1(0x128f)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/cmd/go/internal/par/work_test.go:22 +0x5c fp=0x3f8809feb0 sp=0x3f8809fe80 pc=0x102e84
cmd/go/internal/par.(*Work[...]).runner(0x102d2c)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/cmd/go/internal/par/work.go:102 +0x40 fp=0x3f8809fee0 sp=0x3f8809feb0 pc=0x103538
cmd/go/internal/par.(*Work[...]).Do(0x176d80, 0x64, 0x0)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/cmd/go/internal/par/work.go:70 +0x138 fp=0x3f8809ff10 sp=0x3f8809fee0 pc=0x1037f0
cmd/go/internal/par.TestWork(0x3f880831e0)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/cmd/go/internal/par/work_test.go:19 +0xc4 fp=0x3f8809ff78 sp=0x3f8809ff10 pc=0x102d84
testing.tRunner(0x3f880831e0, 0x151a50)
2023-08-01 13:51 linux-riscv64-unmatched go@91387436 cmd/go/internal/par.TestWork (log) 
fatal error: sync: inconsistent mutex state

runtime.gopark(0x24ebc0?, 0x0?, 0x40?, 0xab?, 0x1039e8?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/proc.go:398 +0x10c fp=0x3f7010dde0 sp=0x3f7010ddc8 pc=0x4957c
runtime.goparkunlock(...)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/proc.go:404
runtime.semacquire1(0x3f70070014, 0x0?, 0x3, 0x1, 0x76?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/sema.go:160 +0x218 fp=0x3f7010de30 sp=0x3f7010dde0 pc=0x59fd0
sync.runtime_SemacquireMutex(0x24ebc0?, 0x10?, 0x3f70070010?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/sema.go:77 +0x44 fp=0x3f7010de60 sp=0x3f7010de30 pc=0x75494
sync.(*Mutex).lockSlow(0x3f70070010)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/sync/mutex.go:171 +0x180 fp=0x3f7010deb0 sp=0x3f7010de60 pc=0x7e860
sync.(*Mutex).Lock(...)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/sync/mutex.go:90
cmd/go/internal/par.(*Work[...]).runner(0x102d2c)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/cmd/go/internal/par/work.go:79 +0x88 fp=0x3f7010dee0 sp=0x3f7010deb0 pc=0x103580
cmd/go/internal/par.(*Work[...]).Do(0x176d80, 0x64, 0x0)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/cmd/go/internal/par/work.go:70 +0x138 fp=0x3f7010df10 sp=0x3f7010dee0 pc=0x1037f0
cmd/go/internal/par.TestWork(0x3f70001520)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/cmd/go/internal/par/work_test.go:19 +0xc4 fp=0x3f7010df78 sp=0x3f7010df10 pc=0x102d84
testing.tRunner(0x3f70001520, 0x151a50)
2023-08-02 15:24 linux-riscv64-unmatched go@0f1491de cmd/go/internal/par.TestWork (log) 
fatal error: sync: unlock of unlocked mutex
fatal error: sync: inconsistent mutex state

runtime.gopark(0x3f88181a40?, 0x0?, 0xac?, 0xa1?, 0x3f0000001e?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/proc.go:398 +0x10c fp=0x3f88032550 sp=0x3f88032538 pc=0x4957c
runtime.goparkunlock(...)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/proc.go:404
runtime.semacquire1(0x3f88162014, 0x0?, 0x3, 0x1, 0x78?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/sema.go:160 +0x218 fp=0x3f880325a0 sp=0x3f88032550 pc=0x59fd0
sync.runtime_SemacquireMutex(0x25f000?, 0x84?, 0x103a6c?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/sema.go:77 +0x44 fp=0x3f880325d0 sp=0x3f880325a0 pc=0x75494
sync.(*Mutex).lockSlow(0x3f88162010)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/sync/mutex.go:171 +0x180 fp=0x3f88032620 sp=0x3f880325d0 pc=0x7e860
sync.(*Mutex).Lock(...)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/sync/mutex.go:90
cmd/go/internal/par.(*Work[...]).Add(0x176e00, 0x3a4)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/cmd/go/internal/par/work.go:36 +0x80 fp=0x3f88032680 sp=0x3f88032620 pc=0x1039d8
cmd/go/internal/par.TestWork.func1(0x3a5)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/cmd/go/internal/par/work_test.go:22 +0x5c fp=0x3f880326b0 sp=0x3f88032680 pc=0x102fb4
cmd/go/internal/par.(*Work[...]).runner(0x102e5c)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/cmd/go/internal/par/work.go:102 +0x40 fp=0x3f880326e0 sp=0x3f880326b0 pc=0x103668
cmd/go/internal/par.(*Work[...]).Do(0x176e00, 0x64, 0x0)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/cmd/go/internal/par/work.go:70 +0x138 fp=0x3f88032710 sp=0x3f880326e0 pc=0x103920
cmd/go/internal/par.TestWork(0x3f88103860)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/cmd/go/internal/par/work_test.go:19 +0xc4 fp=0x3f88032778 sp=0x3f88032710 pc=0x102eb4
testing.tRunner(0x3f88103860, 0x151a50)
2023-08-07 23:13 linux-riscv64-unmatched go@3393155a cmd/go/internal/par.TestWork (log) 
fatal error: sync: unlock of unlocked mutex
fatal error: sync: inconsistent mutex state

runtime.gopark(0x3fa806c180?, 0x5a42c?, 0x3?, 0x0?, 0x59ff4?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/proc.go:398 +0x10c fp=0x3fa8061da0 sp=0x3fa8061d88 pc=0x497fc
runtime.goparkunlock(...)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/proc.go:404
runtime.semacquire1(0x3fa81a0014, 0x0?, 0x3, 0x1, 0x34?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/sema.go:160 +0x218 fp=0x3fa8061df0 sp=0x3fa8061da0 pc=0x5a250
sync.runtime_SemacquireMutex(0x7ed90?, 0x0?, 0x7d480?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/sema.go:77 +0x44 fp=0x3fa8061e20 sp=0x3fa8061df0 pc=0x75754
sync.(*Mutex).lockSlow(0x3fa81a0010)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/sync/mutex.go:171 +0x180 fp=0x3fa8061e70 sp=0x3fa8061e20 pc=0x7eb08
sync.(*Mutex).Lock(0x3fa81a0048?)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/sync/mutex.go:90 +0x58 fp=0x3fa8061e80 sp=0x3fa8061e70 pc=0x7e978
sync.(*Cond).Wait(0x3fa81a0038)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/sync/cond.go:71 +0xc4 fp=0x3fa8061eb0 sp=0x3fa8061e80 pc=0x7d494
cmd/go/internal/par.(*Work[...]).runner(0x103224)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/cmd/go/internal/par/work.go:88 +0x130 fp=0x3fa8061ee0 sp=0x3fa8061eb0 pc=0x103b20
cmd/go/internal/par.(*Work[...]).Do(0x177200, 0x64, 0x0)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/cmd/go/internal/par/work.go:70 +0x138 fp=0x3fa8061f10 sp=0x3fa8061ee0 pc=0x103ce8
cmd/go/internal/par.TestWork(0x3fa818e000)
	/tmp/workdir-host-linux-riscv64-unmatched/go/src/cmd/go/internal/par/work_test.go:19 +0xc4 fp=0x3fa8061f78 sp=0x3fa8061f10 pc=0x10327c
testing.tRunner(0x3fa818e000, 0x151b08)

— watchflakes

@bcmills
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bcmills commented Aug 23, 2023

Duplicate of #62185

@bcmills bcmills marked this as a duplicate of #62185 Aug 23, 2023
@bcmills bcmills closed this as not planned Won't fix, can't repro, duplicate, stale Aug 23, 2023
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