Merge #18487: rpc: Fix rpcRunLater race in walletpassphrase
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Authored by jasonbcox on Oct 13 2020, 16:26.

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deadalnix

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Restricted Project

Commits

rABC8c361009afdd: Merge #18487: rpc: Fix rpcRunLater race in walletpassphrase

Summary

7b8e15728d1ad058a4b7d7569fd5d5ba6806ca28 rpc: Fix rpcRunLater race in walletpassphrase (João Barbosa)

Pull request description:

Release locks before calling `rpcRunLater`.

Quick explanation: `rpcRunLater` leads to `event_free` which calls `event_del` which can wait for the event callback to finish if it's already running and that callback will try to lock wallet mutex - which is already locked in http thread.

Fixes #14995 , fixes #18482. Best reviewed with whitespace changes hidden.

Backport of Core PR18487
Fixes https://github.com/Bitcoin-ABC/bitcoin-abc/issues/375

Test Plan

ninja check check-functional

Diff Detail

Repository

rABC Bitcoin ABC

Lint

Lint Not Applicable

Unit

Tests Not Applicable

Event Timeline

jasonbcox created this revision.Oct 13 2020, 16:26

Herald added a reviewer: Restricted Project. · View Herald TranscriptOct 13 2020, 16:26

jasonbcox requested review of this revision.Oct 13 2020, 16:26

teamcity edited the summary of this revision. (Show Details)Oct 13 2020, 16:27

Harbormaster completed remote builds in B13383: Diff 24598.Oct 13 2020, 16:30

Build Bitcoin ABC Diffs / Diff Testing (build-without-wallet) failed.

Snippet of first build failure:

[0m[1;30mwallet_hd.py                                     | ○ Skipped | 0 s
[0m[1;30mwallet_import_rescan.py                          | ○ Skipped | 0 s
[0m[1;30mwallet_import_with_label.py                      | ○ Skipped | 0 s
[0m[1;30mwallet_importmulti.py                            | ○ Skipped | 0 s
[0m[1;30mwallet_importprunedfunds.py                      | ○ Skipped | 0 s
[0m[1;30mwallet_keypool.py                                | ○ Skipped | 0 s
[0m[1;30mwallet_keypool_topup.py                          | ○ Skipped | 0 s
[0m[1;30mwallet_labels.py                                 | ○ Skipped | 0 s
[0m[1;30mwallet_listreceivedby.py                         | ○ Skipped | 0 s
[0m[1;30mwallet_listsinceblock.py                         | ○ Skipped | 0 s
[0m[1;30mwallet_listtransactions.py                       | ○ Skipped | 0 s
[0m[1;30mwallet_multiwallet.py                            | ○ Skipped | 0 s
[0m[1;30mwallet_multiwallet.py --usecli                   | ○ Skipped | 0 s
[0m[1;30mwallet_reorgsrestore.py                          | ○ Skipped | 0 s
[0m[1;30mwallet_resendwallettransactions.py               | ○ Skipped | 0 s
[0m[1;30mwallet_txn_clone.py                              | ○ Skipped | 0 s
[0m[1;30mwallet_txn_clone.py --mineblock                  | ○ Skipped | 0 s
[0m[1;30mwallet_txn_doublespend.py                        | ○ Skipped | 0 s
[0m[1;30mwallet_txn_doublespend.py --mineblock            | ○ Skipped | 0 s
[0m[1;30mwallet_watchonly.py                              | ○ Skipped | 0 s
[0m[1;30mwallet_watchonly.py --usecli                     | ○ Skipped | 0 s
[0m[1;30mwallet_zapwallettxes.py                          | ○ Skipped | 0 s
[0m[0;31mp2p_invalid_messages.py                          | ✖ Failed  | 4 s
[0m[0;31m[1m
ALL                                              | ✖ Failed  | 270 s (accumulated) 
[0m[0mRuntime: 54 s

[22/379] Test Bitcoin RPC authentication...
...
----------------------------------------------------------------------
Ran 3 tests in 0.004s

OK
[23/379] cd /work/contrib/devtools/chainparams && /usr/bin/python3.7 ./test_make_chainparams.py
.....
----------------------------------------------------------------------
Ran 5 tests in 0.001s

OK
[115/379] Building CXX object src/test/CMakeFiles/test_bitcoin.dir/script_tests.cpp.o
In file included from /usr/include/boost/test/unit_test.hpp:19,
                 from ../../src/test/script_tests.cpp:30:
../../src/test/script_tests.cpp: In member function ‘void script_tests::script_build::test_method()’:
../../src/test/script_tests.cpp:541:22: note: variable tracking size limit exceeded with -fvar-tracking-assignments, retrying without
 BOOST_AUTO_TEST_CASE(script_build) {
                      ^~~~~~~~~~~~
[156/379] Running seeder test suite
PASSED: seeder test suite
[164/379] Running avalanche test suite
PASSED: avalanche test suite
[167/379] Running bitcoin-qt test suite
PASSED: bitcoin-qt test suite
[357/379] Running pow test suite
PASSED: pow test suite
[378/379] Running bitcoin test suite
PASSED: bitcoin test suite
FAILED: test/CMakeFiles/check-functional 
cd /work/abc-ci-builds/build-without-wallet/test && /usr/bin/cmake -E make_directory /work/abc-ci-builds/build-without-wallet/test/junit && /usr/bin/cmake -E make_directory /work/abc-ci-builds/build-without-wallet/test/log && /usr/bin/cmake -E env /usr/bin/python3.7 ./functional/test_runner.py "--testsuitename=Bitcoin ABC functional tests" --junitoutput=/work/abc-ci-builds/build-without-wallet/test/junit/functional_tests.xml
ninja: build stopped: cannot make progress due to previous errors.
Build build-without-wallet failed with exit code 1

Each failure log is accessible here:
Bitcoin ABC functional tests: p2p_invalid_messages.py

deadalnix accepted this revision.Oct 13 2020, 16:43

This revision is now accepted and ready to land.Oct 13 2020, 16:43

Closed by commit rABC8c361009afdd: Merge #18487: rpc: Fix rpcRunLater race in walletpassphrase (authored by Wladimir J. van der Laan <laanwj@protonmail.com>, committed by jasonbcox). · Explain WhyOct 13 2020, 21:26

This revision was automatically updated to reflect the committed changes.

jasonbcox added a commit: rABC8c361009afdd: Merge #18487: rpc: Fix rpcRunLater race in walletpassphrase.