diff options
author | Wladimir J. van der Laan <laanwj@gmail.com> | 2018-05-14 14:54:23 +0200 |
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committer | Wladimir J. van der Laan <laanwj@gmail.com> | 2018-05-14 15:06:48 +0200 |
commit | 7cc1bd3aaeb684e12dbb6a9cd287cac79451fcb6 (patch) | |
tree | 33dd7f5f3416d8f51b7894f185b07a06d1784501 /src/wallet | |
parent | ea7d6553bc7d5660cb2f90f1642b6d7f57d8bf77 (diff) | |
parent | b6f0b4d8595df0241a6499cd57e7ddac56558bf1 (diff) | |
download | bitcoin-7cc1bd3aaeb684e12dbb6a9cd287cac79451fcb6.tar.xz |
Merge #13161: wallet: Reset BerkeleyDB handle after connection fails
b6f0b4d wallet: Improve logging when BerkeleyDB environment fails to close (Tim Ruffing)
264c643 wallet: Reset BerkeleyDB handle after connection fails (Tim Ruffing)
Pull request description:
According to the BerkeleyDB docs, the DbEnv handle may not be accessed
after close() has been called. This change ensures that we create a new
handle after close() is called. This avoids a segfault when the first
connection attempt fails and then a second connection attempt tries to
call open() on the already closed DbEnv handle.
Without the patch, bitcoindd reliably crashes in the second call to `set_lg_dir()` after `close()` if
there is an issue with the database:
```
2018-05-03T13:27:21Z Bitcoin Core version v0.16.99.0-a024a1841-dirty (debug build)
[...]
2018-05-03T13:27:21Z Using wallet directory /home/tim/.bitcoin
2018-05-03T13:27:21Z init message: Verifying wallet(s)...
2018-05-03T13:27:21Z Using BerkeleyDB version Berkeley DB 4.8.30: (April 9, 2010)
2018-05-03T13:27:21Z Using wallet wallet.dat
2018-05-03T13:27:21Z BerkeleyEnvironment::Open: LogDir=/home/tim/.bitcoin/database
2018-05-03T13:27:21Z BerkeleyEnvironment::Open: Error -30974 opening database environment: DB_RUNRECOVERY: Fatal error, run database recovery
2018-05-03T13:27:21Z Moved old /home/tim/.bitcoin/database to /home/tim/.bitcoin/database.1525354041.bak. Retrying.
2018-05-03T13:27:21Z BerkeleyEnvironment::Open: LogDir=/home/tim/.bitcoin/database ErrorFile=/home/tim/.bitcoin/db.log
[1] 14533 segmentation fault (core dumped) ./src/bitcoind
```
After the fix:
```
2018-05-03T17:19:32Z Bitcoin Core version v0.16.99.0-cc09e3bd0-dirty (release build)
[...]
2018-05-03T17:19:32Z Using wallet directory /home/tim/.bitcoin
2018-05-03T17:19:32Z init message: Verifying wallet(s)...
2018-05-03T17:19:32Z Using BerkeleyDB version Berkeley DB 4.8.30: (April 9, 2010)
2018-05-03T17:19:32Z Using wallet wallet.dat
2018-05-03T17:19:32Z BerkeleyEnvironment::Open: LogDir=/home/tim/.bitcoin/database ErrorFile=/home/tim/.bitcoin/db.log
2018-05-03T17:19:32Z scheduler thread start
2018-05-03T17:19:32Z BerkeleyEnvironment::Open: Error -30974 opening database environment: DB_RUNRECOVERY: Fatal error, run database recovery
2018-05-03T17:19:32Z Moved old /home/tim/.bitcoin/database to /home/tim/.bitcoin/database.1525367972.bak. Retrying.
2018-05-03T17:19:32Z BerkeleyEnvironment::Open: LogDir=/home/tim/.bitcoin/database ErrorFile=/home/tim/.bitcoin/db.log
2018-05-03T17:19:32Z Cache configuration:
2018-05-03T17:19:32Z * Using 2.0MiB for block index database
2018-05-03T17:19:32Z * Using 8.0MiB for chain state database
2018-05-03T17:19:32Z * Using 440.0MiB for in-memory UTXO set (plus up to 286.1MiB of unused mempool space)
2018-05-03T17:19:32Z init message: Loading block index..
[...]
```
Tree-SHA512: b809b318e5014ec47d023dc3dc40826b9706bfb211fa08bc2d29f36971b96caa10ad48d9a3f96c03933be46fa4ff7e00e952ac77bfffb6563767fb08aa4f23d6
Diffstat (limited to 'src/wallet')
-rw-r--r-- | src/wallet/db.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/wallet/db.cpp b/src/wallet/db.cpp index 10a06e4b9a..7e75ee7ad1 100644 --- a/src/wallet/db.cpp +++ b/src/wallet/db.cpp @@ -102,7 +102,7 @@ void BerkeleyEnvironment::Close() int ret = dbenv->close(0); if (ret != 0) - LogPrintf("BerkeleyEnvironment::EnvShutdown: Error %d shutting down database environment: %s\n", ret, DbEnv::strerror(ret)); + LogPrintf("BerkeleyEnvironment::Close: Error %d closing database environment: %s\n", ret, DbEnv::strerror(ret)); if (!fMockDb) DbEnv((u_int32_t)0).remove(strPath.c_str(), 0); } @@ -168,8 +168,12 @@ bool BerkeleyEnvironment::Open(bool retry) nEnvFlags, S_IRUSR | S_IWUSR); if (ret != 0) { - dbenv->close(0); LogPrintf("BerkeleyEnvironment::Open: Error %d opening database environment: %s\n", ret, DbEnv::strerror(ret)); + int ret2 = dbenv->close(0); + if (ret2 != 0) { + LogPrintf("BerkeleyEnvironment::Open: Error %d closing failed database environment: %s\n", ret2, DbEnv::strerror(ret2)); + } + Reset(); if (retry) { // try moving the database env out of the way fs::path pathDatabaseBak = pathIn / strprintf("database.%d.bak", GetTime()); |