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bug(routing/dht) data race #270

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btc opened this issue Nov 5, 2014 · 10 comments
Closed

bug(routing/dht) data race #270

btc opened this issue Nov 5, 2014 · 10 comments
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kind/bug A bug in existing code (including security flaws)

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@btc
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btc commented Nov 5, 2014

Full gist here: https://gist.github.com/maybebtc/7da7d507bd800a856406

Ran tests under the race detector. Discovered this.

�[0;37m01:52:34.238 �[31mERROR �[0;34m     swarm: �[0mFailed to listen on: /ip4/127.0.0.1/tcp/2222 - listen tcp 127.0.0.1:2222: bind: address already in use �[0;37mconn.go:27�[0m
==================
WARNING: DATA RACE
Write by goroutine 14:
  sync.raceWrite()
      /usr/local/opt/go/libexec/src/pkg/sync/race.go:41 +0x35
  sync.(*WaitGroup).Wait()
      /usr/local/opt/go/libexec/src/pkg/sync/waitgroup.go:122 +0x176
  github.com/jbenet/go-ipfs/util/ctxcloser.(*contextCloser).closeLogic()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/util/ctxcloser/closer.go:171 +0xba
  github.com/jbenet/go-ipfs/util/ctxcloser.*contextCloser.(github.com/jbenet/go-ipfs/util/ctxcloser.closeLogic)·fm()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/util/ctxcloser/closer.go:161 +0x33
  sync.(*Once).Do()
      /usr/local/opt/go/libexec/src/pkg/sync/once.go:40 +0xb1

Previous read by goroutine 11:
  sync.raceRead()
      /usr/local/opt/go/libexec/src/pkg/sync/race.go:37 +0x35
  sync.(*WaitGroup).Add()
      /usr/local/opt/go/libexec/src/pkg/sync/waitgroup.go:60 +0xbe
  github.com/jbenet/go-ipfs/util/ctxcloser.(*contextCloser).closeOnContextDone()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/util/ctxcloser/closer.go:179 +0x4b
@btc btc added the kind/bug A bug in existing code (including security flaws) label Nov 5, 2014
@btc
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btc commented Nov 5, 2014

==================
WARNING: DATA RACE
Write by goroutine 70:
  sync.raceWrite()
      /usr/local/opt/go/libexec/src/pkg/sync/race.go:41 +0x35
  sync.(*WaitGroup).Wait()
      /usr/local/opt/go/libexec/src/pkg/sync/waitgroup.go:122 +0x176
  github.com/jbenet/go-ipfs/util/ctxcloser.(*contextCloser).closeLogic()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/util/ctxcloser/closer.go:171 +0xba
  github.com/jbenet/go-ipfs/util/ctxcloser.*contextCloser.(github.com/jbenet/go-ipfs/util/ctxcloser.closeLogic)·fm()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/util/ctxcloser/closer.go:161 +0x33
  sync.(*Once).Do()
      /usr/local/opt/go/libexec/src/pkg/sync/once.go:40 +0xb1

Previous read by goroutine 196:
  sync.raceRead()
      /usr/local/opt/go/libexec/src/pkg/sync/race.go:37 +0x35
  sync.(*WaitGroup).Add()
      /usr/local/opt/go/libexec/src/pkg/sync/waitgroup.go:60 +0xbe
  github.com/jbenet/go-ipfs/util/ctxcloser.(*contextCloser).closeOnContextDone()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/util/ctxcloser/closer.go:179 +0x4b
  runtime.gosched0()
      /usr/local/opt/go/libexec/src/pkg/runtime/proc.c:1436 +0xaf
  crypto/elliptic.p256Square()
      /usr/local/opt/go/libexec/src/pkg/crypto/elliptic/p256.go:550 +0xcbd
  crypto/elliptic.p256Invert()
      /usr/local/opt/go/libexec/src/pkg/crypto/elliptic/p256.go:698 +0x61f
  crypto/elliptic.p256PointToAffine()
      /usr/local/opt/go/libexec/src/pkg/crypto/elliptic/p256.go:1067 +0x61
  crypto/elliptic.p256ToAffine()
      /usr/local/opt/go/libexec/src/pkg/crypto/elliptic/p256.go:1078 +0x85
  crypto/elliptic.p256Curve.ScalarMult()
      /usr/local/opt/go/libexec/src/pkg/crypto/elliptic/p256.go:77 +0x17d
  github.com/jbenet/go-ipfs/crypto.func·001()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/crypto/key.go:126 +0x449
  github.com/jbenet/go-ipfs/crypto/spipe.(*SecurePipe).handshake()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/crypto/spipe/handshake.go:181 +0x1c00
  github.com/jbenet/go-ipfs/crypto/spipe.NewSecurePipe()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/crypto/spipe/pipe.go:50 +0x1ee
  github.com/jbenet/go-ipfs/net/conn.(*secureConn).secureHandshake()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/net/conn/secure_conn.go:64 +0x38c
  github.com/jbenet/go-ipfs/net/conn.newSecureConn()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/net/conn/secure_conn.go:37 +0x320
  github.com/jbenet/go-ipfs/net/conn.func·005()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/net/conn/listen.go:67 +0x32b

@jbenet
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jbenet commented Nov 5, 2014

the second looks to be in spipe. what's the first one on?

@jbenet
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jbenet commented Nov 5, 2014

stack traces look cut off

@btc
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btc commented Nov 5, 2014

@jbenet Did you see the full gist? https://gist.github.com/maybebtc/7da7d507bd800a856406

edit: i should've displayed the link more prominently

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jbenet commented Nov 5, 2014

Btw, I also got:

==================
WARNING: DATA RACE
Write by goroutine 538:
  github.com/jbenet/go-ipfs/exchange/bitswap.TestSendToWantingPeer()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/exchange/bitswap/bitswap_test.go:152 +0x46
  testing.tRunner()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/testing/testing.go:422 +0x10f

Previous read by goroutine 572:
  github.com/jbenet/go-ipfs/blocks.NewBlockWithHash()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/blocks/blocks.go:26 +0x60
  github.com/jbenet/go-ipfs/blockstore.(*blockstore).Get()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/blockstore/blockstore.go:40 +0x227
  github.com/jbenet/go-ipfs/exchange/bitswap.(*bitswap).ReceiveMessage()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/exchange/bitswap/bitswap.go:182 +0xbd0
  github.com/jbenet/go-ipfs/exchange/bitswap/testnet.(*networkClient).ReceiveMessage()
      <autogenerated>:6 +0xff
  github.com/jbenet/go-ipfs/exchange/bitswap/testnet.(*network).SendRequest()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/exchange/bitswap/testnet/network.go:119 +0x35d
  github.com/jbenet/go-ipfs/exchange/bitswap/testnet.(*networkClient).SendRequest()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/exchange/bitswap/testnet/network.go:163 +0x118
  github.com/jbenet/go-ipfs/exchange/bitswap.func·002()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/exchange/bitswap/bitswap.go:100 +0x343
  runtime.gosched0()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/runtime/proc.c:1436 +0xaf
  github.com/jbenet/go-ipfs/routing/mock.func·001()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/routing/mock/routing.go:65 +0x10e

Goroutine 538 (running) created at:
  testing.RunTests()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/testing/testing.go:504 +0xb46
  testing.Main()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/testing/testing.go:435 +0xa2
  main.main()
      github.com/jbenet/go-ipfs/exchange/bitswap/_test/_testmain.go:55 +0xdc

Goroutine 572 (finished) created at:
  github.com/jbenet/go-ipfs/exchange/bitswap.func·003()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/exchange/bitswap/bitswap.go:114 +0x526
==================

==================
WARNING: DATA RACE
Write by goroutine 6:
  github.com/jbenet/go-ipfs/fuse/ipns.func·003()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/fuse/ipns/ipns_test.go:220 +0x53
  github.com/jbenet/go-ipfs/fuse/ipns.TestFastRepublish()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/fuse/ipns/ipns_test.go:299 +0x1277
  testing.tRunner()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/testing/testing.go:422 +0x10f

Previous read by goroutine 82:
  github.com/jbenet/go-ipfs/fuse/ipns.func·004()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/fuse/ipns/ipns_test.go:248 +0x5c
  runtime.gosched0()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/runtime/proc.c:1436 +0xaf
  math/big.nat.div()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/math/big/nat.go:506 +0x129
  math/big.(*Int).QuoRem()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/math/big/int.go:224 +0x11d
  math/big.(*Int).GCD()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/math/big/int.go:631 +0x299
  math/big.(*Int).ModInverse()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/math/big/int.go:740 +0x84
  crypto/rsa.(*PrivateKey).Precompute()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/crypto/rsa/rsa.go:359 +0x46e
  crypto/rsa.GenerateMultiPrimeKey()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/crypto/rsa/rsa.go:216 +0x8f4
  crypto/rsa.GenerateKey()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/crypto/rsa/rsa.go:126 +0x63
  github.com/jbenet/go-ipfs/crypto.GenerateKeyPair()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/crypto/key.go:77 +0xbb
  github.com/jbenet/go-ipfs/core.NewMockNode()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/core/mock.go:20 +0x79
  github.com/jbenet/go-ipfs/fuse/ipns.setupIpnsTest()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/fuse/ipns/ipns_test.go:67 +0x6d
  github.com/jbenet/go-ipfs/fuse/ipns.TestAppendFile()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/fuse/ipns/ipns_test.go:164 +0x4e
  testing.tRunner()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/testing/testing.go:422 +0x10f

Goroutine 6 (running) created at:
  testing.RunTests()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/testing/testing.go:504 +0xb46
  testing.Main()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/testing/testing.go:435 +0xa2
  main.main()
      github.com/jbenet/go-ipfs/fuse/ipns/_test/_testmain.go:59 +0xdc

Goroutine 82 (running) created at:
  github.com/jbenet/go-ipfs/fuse/ipns.TestFastRepublish()
      /Users/jbenet/go/src/github.com/jbenet/go-ipfs/fuse/ipns/ipns_test.go:252 +0xaf3
  testing.tRunner()
      /usr/local/Cellar/go/1.3/libexec/src/pkg/testing/testing.go:422 +0x10f
==================

@btc
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btc commented Nov 5, 2014

found 3 more in the fuse/ipns package

unable to reproduce to get the full trace

1

WARNING: DATA RACE
Read by goroutine 64:
  github.com/jbenet/go-ipfs/merkledag.(*Node).Encoded()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/coding.go:76 +0x7e
  github.com/jbenet/go-ipfs/merkledag.(*Node).Multihash()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/merkledag.go:144 +0x66
  github.com/jbenet/go-ipfs/merkledag.(*Node).Key()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/merkledag.go:154 +0x5b
  github.com/jbenet/go-ipfs/merkledag.(*dagService).Add()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/merkledag.go:181 +0x72
  github.com/jbenet/go-ipfs/merkledag.(*dagService).AddRecursive()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/merkledag.go:204 +0x67
  github.com/jbenet/go-ipfs/fuse/ipns.(*Node).republishRoot()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/fuse/ipns/ipns_unix.go:398 +0x1f3
  github.com/jbenet/go-ipfs/fuse/ipns.(*Republisher).Run()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/fuse/ipns/repub_unix.go:36 +0x222

Previous write by goroutine 78:
  github.com/jbenet/go-ipfs/merkledag.(*Node).Encoded()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/coding.go:79 +0x161
  github.com/jbenet/go-ipfs/merkledag.(*Node).Multihash()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/merkledag.go:144 +0x66
  github.com/jbenet/go-ipfs/path.(*Resolver).ResolveLinks()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/path/path.go:82 +0x281
  github.com/jbenet/go-ipfs/fuse/ipns.(*Node).Lookup()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/fuse/ipns/ipns_unix.go:249 +0x29e
  github.com/jbenet/go-ipfs/Godeps/_workspace/src/bazil.org/fuse/fs.(*serveConn).serve()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/Godeps/_workspace/src/bazil.org/fuse/fs/serve.go:871 +0x63cf

2

==================
==================
WARNING: DATA RACE
Read by goroutine 64:
  github.com/jbenet/go-ipfs/merkledag.(*Node).Multihash()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/merkledag.go:149 +0xc3
  github.com/jbenet/go-ipfs/merkledag.(*Node).Key()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/merkledag.go:154 +0x5b
  github.com/jbenet/go-ipfs/merkledag.(*dagService).Add()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/merkledag.go:181 +0x72
  github.com/jbenet/go-ipfs/merkledag.(*dagService).AddRecursive()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/merkledag.go:204 +0x67
  github.com/jbenet/go-ipfs/fuse/ipns.(*Node).republishRoot()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/fuse/ipns/ipns_unix.go:398 +0x1f3
  github.com/jbenet/go-ipfs/fuse/ipns.(*Republisher).Run()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/fuse/ipns/repub_unix.go:36 +0x222

Previous write by goroutine 78:
  github.com/jbenet/go-ipfs/merkledag.(*Node).Encoded()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/coding.go:82 +0x244
  github.com/jbenet/go-ipfs/merkledag.(*Node).Multihash()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/merkledag.go:144 +0x66
  github.com/jbenet/go-ipfs/path.(*Resolver).ResolveLinks()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/path/path.go:82 +0x281
  github.com/jbenet/go-ipfs/fuse/ipns.(*Node).Lookup()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/fuse/ipns/ipns_unix.go:249 +0x29e
  github.com/jbenet/go-ipfs/Godeps/_workspace/src/bazil.org/fuse/fs.(*serveConn).serve()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/Godeps/_workspace/src/bazil.org/fuse/fs/serve.go:871 +0x63cf

3

WARNING: DATA RACE
Read by goroutine 64:
  runtime.slicebytetostring()
      /private/tmp/go-0Pxw5f/go/src/pkg/runtime/string.goc:287 +0x0
  github.com/jbenet/go-ipfs/merkledag.(*Node).Key()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/merkledag.go:155 +0xa0
  github.com/jbenet/go-ipfs/merkledag.(*dagService).Add()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/merkledag.go:181 +0x72
  github.com/jbenet/go-ipfs/merkledag.(*dagService).AddRecursive()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/merkledag.go:204 +0x67
  github.com/jbenet/go-ipfs/fuse/ipns.(*Node).republishRoot()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/fuse/ipns/ipns_unix.go:398 +0x1f3
  github.com/jbenet/go-ipfs/fuse/ipns.(*Republisher).Run()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/fuse/ipns/repub_unix.go:36 +0x222

Previous write by goroutine 78:
  runtime.copy()
      /private/tmp/go-0Pxw5f/go/src/pkg/runtime/slice.goc:136 +0x0
  github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multihash.Encode()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multihash/multihash.go:138 +0x363
  github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multihash.Sum()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multihash/sum.go:44 +0x4f9
  github.com/jbenet/go-ipfs/util.Hash()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/util/key.go:101 +0x92
  github.com/jbenet/go-ipfs/merkledag.(*Node).Encoded()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/coding.go:82 +0x20f
  github.com/jbenet/go-ipfs/merkledag.(*Node).Multihash()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/merkledag/merkledag.go:144 +0x66
  github.com/jbenet/go-ipfs/path.(*Resolver).ResolveLinks()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/path/path.go:82 +0x281
  github.com/jbenet/go-ipfs/fuse/ipns.(*Node).Lookup()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/fuse/ipns/ipns_unix.go:249 +0x29e
  github.com/jbenet/go-ipfs/Godeps/_workspace/src/bazil.org/fuse/fs.(*serveConn).serve()
      /Users/btc/Dropbox/src2/go/src/github.com/jbenet/go-ipfs/Godeps/_workspace/src/bazil.org/fuse/fs/serve.go:871 +0x63cf

btc pushed a commit that referenced this issue Nov 5, 2014
btc pushed a commit that referenced this issue Nov 5, 2014
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jbenet added a commit that referenced this issue Nov 5, 2014
jbenet added a commit that referenced this issue Nov 5, 2014
btc pushed a commit that referenced this issue Nov 5, 2014
btc pushed a commit that referenced this issue Nov 5, 2014
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btc commented Nov 5, 2014

@jbenet full run-down

  • ipns_test (fixed in c897f91)
  • bitswap test (fixed in 4566d43)
  • spipe / closer
  • dht_test / closer
  • 1 merkledag
  • 2 merkledag
  • 3 merkledag

jbenet added a commit that referenced this issue Nov 5, 2014
jbenet added a commit that referenced this issue Nov 5, 2014
jbenet added a commit that referenced this issue Nov 5, 2014
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jbenet commented Nov 5, 2014

(wasn't spipe after all, was sone weird goroutine stack re-scheduling)

@btc
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btc commented Nov 5, 2014

Looks like you took down quite a few of the races. Is it clear from the checklist which ones?

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jbenet commented Nov 5, 2014

not sure which are the merkledag ones yet. I have seen them in the past though. Will keep an eye out

btc pushed a commit that referenced this issue Nov 5, 2014
btc pushed a commit that referenced this issue Nov 5, 2014
btc pushed a commit that referenced this issue Nov 5, 2014
@jbenet jbenet closed this as completed Jan 8, 2015
whyrusleeping pushed a commit to ipfs/go-bitswap that referenced this issue Jul 27, 2018
ariescodescream pushed a commit to ariescodescream/go-ipfs that referenced this issue Oct 23, 2021
@ajnavarro ajnavarro mentioned this issue Aug 24, 2022
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Jorropo pushed a commit to Jorropo/go-libipfs that referenced this issue Jan 26, 2023
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kind/bug A bug in existing code (including security flaws)
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