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core: fix race during native cache persist

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Fixes the following race:
```
2022-05-06T06:51:33.3980029Z WARNING: DATA RACE
2022-05-06T06:51:33.3980178Z Read at 0x00c0007e02a0 by goroutine 96:
2022-05-06T06:51:33.3980338Z   runtime.mapaccess2_fast32()
2022-05-06T06:51:33.3980863Z       /opt/hostedtoolcache/go/1.17.9/x64/src/runtime/map_fast32.go:52 +0x0
2022-05-06T06:51:33.3981249Z   github.com/nspcc-dev/neo-go/pkg/core/dao.(*Simple).getCache()
2022-05-06T06:51:33.3982707Z       /home/runner/work/neo-go/neo-go/pkg/core/dao/dao.go:905 +0x64
2022-05-06T06:51:33.3983443Z   github.com/nspcc-dev/neo-go/pkg/core/dao.(*Simple).GetROCache()
2022-05-06T06:51:33.3983900Z       /home/runner/work/neo-go/neo-go/pkg/core/dao/dao.go:889 +0xd4
2022-05-06T06:51:33.3984231Z   github.com/nspcc-dev/neo-go/pkg/core/dao.(*Simple).getCache()
2022-05-06T06:51:33.3984869Z       /home/runner/work/neo-go/neo-go/pkg/core/dao/dao.go:913 +0x196
2022-05-06T06:51:33.3985254Z   github.com/nspcc-dev/neo-go/pkg/core/dao.(*Simple).GetROCache()
2022-05-06T06:51:33.3985756Z       /home/runner/work/neo-go/neo-go/pkg/core/dao/dao.go:889 +0xd4
2022-05-06T06:51:33.3986167Z   github.com/nspcc-dev/neo-go/pkg/core/native.(*Policy).isBlockedInternal()
2022-05-06T06:51:33.3986824Z       /home/runner/work/neo-go/neo-go/pkg/core/native/policy.go:258 +0x6a
2022-05-06T06:51:33.3987264Z   github.com/nspcc-dev/neo-go/pkg/core/native.(*Policy).IsBlocked()
2022-05-06T06:51:33.3987743Z       /home/runner/work/neo-go/neo-go/pkg/core/native/policy.go:250 +0x2f7
2022-05-06T06:51:33.3988155Z   github.com/nspcc-dev/neo-go/pkg/core/native.(*NEO).getAllCandidatesCall.func1()
2022-05-06T06:51:33.3988645Z       /home/runner/work/neo-go/neo-go/pkg/core/native/native_neo.go:948 +0x109
2022-05-06T06:51:33.3989053Z   github.com/nspcc-dev/neo-go/pkg/core/native.(*NEO).getAllCandidatesCall.func2()
2022-05-06T06:51:33.3989550Z       /home/runner/work/neo-go/neo-go/pkg/core/native/native_neo.go:959 +0x137
2022-05-06T06:51:33.3989561Z
2022-05-06T06:51:33.3989735Z Previous write at 0x00c0007e02a0 by goroutine 40:
2022-05-06T06:51:33.3989891Z   runtime.mapassign_fast32()
2022-05-06T06:51:33.3990260Z       /opt/hostedtoolcache/go/1.17.9/x64/src/runtime/map_fast32.go:92 +0x0
2022-05-06T06:51:33.3990640Z   github.com/nspcc-dev/neo-go/pkg/core/dao.(*Simple).persistNativeCache()
2022-05-06T06:51:33.3991084Z       /home/runner/work/neo-go/neo-go/pkg/core/dao/dao.go:876 +0x12d
2022-05-06T06:51:33.3991411Z   github.com/nspcc-dev/neo-go/pkg/core/dao.(*Simple).Persist()
2022-05-06T06:51:33.3991852Z       /home/runner/work/neo-go/neo-go/pkg/core/dao/dao.go:850 +0x1d4
2022-05-06T06:51:33.3992186Z   github.com/nspcc-dev/neo-go/pkg/core.(*Blockchain).runPersist()
2022-05-06T06:51:33.3992650Z       /home/runner/work/neo-go/neo-go/pkg/core/blockchain.go:1285 +0x28a
2022-05-06T06:51:33.3992971Z   github.com/nspcc-dev/neo-go/pkg/core.(*Blockchain).storeBlock()
2022-05-06T06:51:33.3993845Z       /home/runner/work/neo-go/neo-go/pkg/core/blockchain.go:1143 +0x1b9c
2022-05-06T06:51:33.3994241Z   github.com/nspcc-dev/neo-go/pkg/core.(*Blockchain).AddBlock()
2022-05-06T06:51:33.3994707Z       /home/runner/work/neo-go/neo-go/pkg/core/blockchain.go:910 +0x791
2022-05-06T06:51:33.3995053Z   github.com/nspcc-dev/neo-go/pkg/neotest.(*Executor).AddNewBlock()
2022-05-06T06:51:33.3995492Z       /home/runner/work/neo-go/neo-go/pkg/neotest/basic.go:334 +0xa7
2022-05-06T06:51:33.3995842Z   github.com/nspcc-dev/neo-go/pkg/neotest.(*Executor).InvokeScript()
2022-05-06T06:51:33.3996288Z       /home/runner/work/neo-go/neo-go/pkg/neotest/basic.go:178 +0x169
2022-05-06T06:51:33.3996725Z   github.com/nspcc-dev/neo-go/pkg/core/native/native_test_test.TestNEO_GetCandidates.func2()
2022-05-06T06:51:33.3997253Z       /home/runner/work/neo-go/neo-go/pkg/core/native/native_test/neo_test.go:549 +0x4cb
2022-05-06T06:51:33.3997672Z   github.com/nspcc-dev/neo-go/pkg/core/native/native_test_test.TestNEO_GetCandidates()
2022-05-06T06:51:33.3998404Z       /home/runner/work/neo-go/neo-go/pkg/core/native/native_test/neo_test.go:574 +0x2103
2022-05-06T06:51:33.3998751Z   github.com/nspcc-dev/neo-go/pkg/neotest.(*Executor).AddNewBlock()
2022-05-06T06:51:33.3999193Z       /home/runner/work/neo-go/neo-go/pkg/neotest/basic.go:334 +0xa7
2022-05-06T06:51:33.3999541Z   github.com/nspcc-dev/neo-go/pkg/neotest.(*Executor).InvokeScript()
2022-05-06T06:51:33.3999988Z       /home/runner/work/neo-go/neo-go/pkg/neotest/basic.go:178 +0x169
2022-05-06T06:51:33.4000305Z   github.com/nspcc-dev/neo-go/pkg/neotest.AddSystemFee()
2022-05-06T06:51:33.4000733Z       /home/runner/work/neo-go/neo-go/pkg/neotest/basic.go:291 +0x85
2022-05-06T06:51:33.4001062Z   github.com/nspcc-dev/neo-go/pkg/neotest.(*Executor).SignTx()
2022-05-06T06:51:33.4001509Z       /home/runner/work/neo-go/neo-go/pkg/neotest/basic.go:111 +0x109
2022-05-06T06:51:33.4001885Z   github.com/nspcc-dev/neo-go/pkg/neotest.(*Executor).PrepareInvocation()
2022-05-06T06:51:33.4002435Z       /home/runner/work/neo-go/neo-go/pkg/neotest/basic.go:191 +0x1b2
2022-05-06T06:51:33.4002808Z   github.com/nspcc-dev/neo-go/pkg/neotest.(*Executor).InvokeScript()
2022-05-06T06:51:33.4003249Z       /home/runner/work/neo-go/neo-go/pkg/neotest/basic.go:177 +0xed
2022-05-06T06:51:33.4003685Z   github.com/nspcc-dev/neo-go/pkg/core/native/native_test_test.TestNEO_GetCandidates.func2()
2022-05-06T06:51:33.4004216Z       /home/runner/work/neo-go/neo-go/pkg/core/native/native_test/neo_test.go:549 +0x4cb
2022-05-06T06:51:33.4004634Z   github.com/nspcc-dev/neo-go/pkg/core/native/native_test_test.TestNEO_GetCandidates()
2022-05-06T06:51:33.4005165Z       /home/runner/work/neo-go/neo-go/pkg/core/native/native_test/neo_test.go:558 +0x1bbb
2022-05-06T06:51:33.4005298Z   testing.tRunner()
2022-05-06T06:51:33.4005674Z       /opt/hostedtoolcache/go/1.17.9/x64/src/testing/testing.go:1259 +0x22f
2022-05-06T06:51:33.4005916Z   testing.(*T).Run·dwrap·21()
2022-05-06T06:51:33.4006298Z       /opt/hostedtoolcache/go/1.17.9/x64/src/testing/testing.go:1306 +0x47
...
```
This commit is contained in:
Anna Shaleva 2022-05-06 10:27:48 +03:00
parent ce35e69460
commit a427411a57
1 changed files with 11 additions and 16 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
pkg/core/dao/dao.go
View file

@ -839,14 +839,13 @@ func (dao *Simple) getDataBuf() *io.BufBinWriter {
// underlying store. It doesn't block accesses to DAO from other threads.
func (dao *Simple) Persist() (int, error) {
if dao.nativeCachePS != nil {
if !dao.private {
dao.nativeCacheLock.Lock()
defer dao.nativeCacheLock.Unlock()
}
if !dao.nativeCachePS.private {
dao.nativeCachePS.nativeCacheLock.Lock()
defer dao.nativeCachePS.nativeCacheLock.Unlock()
}
defer func() {
dao.nativeCachePS.nativeCacheLock.Unlock()
dao.nativeCacheLock.Unlock()
}()
dao.persistNativeCache()
}
return dao.Store.Persist()
@ -881,10 +880,8 @@ func (dao *Simple) persistNativeCache() {
// GetROCache returns native contact cache. The cache CAN NOT be modified by
// the caller. It's the caller's duty to keep it unmodified.
func (dao *Simple) GetROCache(id int32) NativeContractCache {
if !dao.private {
dao.nativeCacheLock.RLock()
defer dao.nativeCacheLock.RUnlock()
}
return dao.getCache(id, true)
}
@ -892,10 +889,8 @@ func (dao *Simple) GetROCache(id int32) NativeContractCache {
// GetRWCache returns native contact cache. The cache CAN BE safely modified
// by the caller.
func (dao *Simple) GetRWCache(id int32) NativeContractCache {
if !dao.private {
dao.nativeCacheLock.Lock()
defer dao.nativeCacheLock.Unlock()
}
return dao.getCache(id, false)
}