From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1WqALP-0004PY-P7 for bitcoin-development@lists.sourceforge.net; Fri, 30 May 2014 00:06:47 +0000 Received: from mail-qg0-f44.google.com ([209.85.192.44]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1WqALO-0005qi-8m for bitcoin-development@lists.sourceforge.net; Fri, 30 May 2014 00:06:47 +0000 Received: by mail-qg0-f44.google.com with SMTP id i50so3300893qgf.3 for ; Thu, 29 May 2014 17:06:40 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=lQvUiJU4sLzUW3PW8WuJJvHNjX+95O3D5IyBFhJ/jFo=; b=ga+BgLimaYVGJVj13yFNUfrghSXKaxpwlUdAbClJ1F6G5NZOiUsa/+nTc1SV3dC5qA d3ptt/l140p1LtIB+9TTaI3Tg+rAsWbD2n+7cg/XrBaaJZu1qz3bRjjurmIyRKjX9ioc bV8U39/F8oWswhtrKqg3NNjL6METXHnGWwPwJ4XZwCneJLL8tvyJVI8rrsHeqnUtLzxG bz8xea4wAkO4gB1xwDdS1v3uWJGe5s0CLVkNDjbu03duR5EUmGEMMQsQlan1/ykvlpTL 8NdhKG/5KrWxPNoLFzw7z63RZ/cYAjaHebMsDDzTEeCeXTGNMGI45/8Uc5MzexhlzA1H ylgQ== X-Gm-Message-State: ALoCoQm738Nm0WGtVNezLw1kF1I6g1A+v3gwUK7UjsiD5x/Rm8Km9CYS1ZdMIzUodW28br3pLRbh MIME-Version: 1.0 X-Received: by 10.140.84.83 with SMTP id k77mr14701530qgd.70.1401408400544; Thu, 29 May 2014 17:06:40 -0700 (PDT) Received: by 10.140.48.11 with HTTP; Thu, 29 May 2014 17:06:40 -0700 (PDT) X-Originating-IP: [70.197.3.77] Received: by 10.140.48.11 with HTTP; Thu, 29 May 2014 17:06:40 -0700 (PDT) In-Reply-To: References: Date: Thu, 29 May 2014 17:06:40 -0700 Message-ID: From: Mark Friedenbach To: Toshi Morita Content-Type: multipart/alternative; boundary=001a11c1317ce678bf04fa92d1ef X-Spam-Score: 1.0 (+) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [209.85.192.44 listed in list.dnswl.org] 1.0 HTML_MESSAGE BODY: HTML included in message X-Headers-End: 1WqALO-0005qi-8m Cc: bitcoin-development@lists.sourceforge.net Subject: Re: [Bitcoin-development] bitcoind minor bug in wallet and possible fix X-BeenThere: bitcoin-development@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 May 2014 00:06:47 -0000 --001a11c1317ce678bf04fa92d1ef Content-Type: text/plain; charset=UTF-8 Please make a pull request on github. It'll likely get merged quickly. On May 29, 2014 5:04 PM, "Toshi Morita" wrote: > I ran bitcoind under valgrind and found a place where it references an > uninitialized variable in some cases: > > tm@tm-VirtualBox:~/bitcoind/bitcoin/src$ valgrind ./bitcoind > ==2337== Memcheck, a memory error detector > ==2337== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al. > ==2337== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info > ==2337== Command: ./bitcoind > ==2337== > ==2337== Conditional jump or move depends on uninitialised value(s) > ==2337== at 0x319176: CWallet::LoadKeyMetadata(CPubKey const&, > CKeyMetadata const&) (wallet.cpp:110) > ==2337== by 0x33645A: ReadKeyValue(CWallet*, CDataStream&, > CDataStream&, CWalletScanState&, std::string&, std::string&) > (walletdb.cpp:509) > ==2337== by 0x3374F0: CWalletDB::LoadWallet(CWallet*) (walletdb.cpp:623) > ==2337== by 0x3218FD: CWallet::LoadWallet(bool&) (wallet.cpp:1485) > ==2337== by 0x157F16: AppInit2(boost::thread_group&) (init.cpp:958) > ==2337== by 0x140142: AppInit(int, char**) (bitcoind.cpp:143) > ==2337== by 0x13649E: main (bitcoind.cpp:180) > ==2337== > > The bug occurs here because nTimeFirstKey is not initialized when the > wallet is instantiated: > > wallet.cpp:63 > if (!nTimeFirstKey || nCreationTime < nTimeFirstKey) > nTimeFirstKey = nCreationTime; > > > I fixed it in my fork: > > diff --git a/src/wallet.h b/src/wallet.h > index 9607415..b78045f 100644 > --- a/src/wallet.h > +++ b/src/wallet.h > @@ -163,6 +163,7 @@ public: > nOrderPosNext = 0; > nNextResend = 0; > nLastResend = 0; > + nTimeFirstKey = 0; > } > > If this fix is ok please pull from my GitHub fork; username on GitHub is > tm314159. > > Toshi > > > > ------------------------------------------------------------------------------ > Time is money. Stop wasting it! Get your web API in 5 minutes. > www.restlet.com/download > http://p.sf.net/sfu/restlet > _______________________________________________ > Bitcoin-development mailing list > Bitcoin-development@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bitcoin-development > > --001a11c1317ce678bf04fa92d1ef Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

Please make a pull request on github. It'll likely get m= erged quickly.

On May 29, 2014 5:04 PM, "Toshi Morita"= ; <toshi@peernova.com> wrot= e:
I ran bitcoind under valgrind and found a place = where it references an uninitialized variable in some cases:

tm@tm-V= irtualBox:~/bitcoind/bitcoin/src$ valgrind ./bitcoind
=3D=3D2337=3D=3D M= emcheck, a memory error detector
=3D=3D2337=3D=3D Copyright (C) 2002-2012, and GNU GPL'd, by Julian Sewa= rd et al.
=3D=3D2337=3D=3D Using Valgrind-3.8.1 and LibVEX; rerun with -= h for copyright info
=3D=3D2337=3D=3D Command: ./bitcoind
=3D=3D2337= =3D=3D
=3D=3D2337=3D=3D Conditional jump or move depends on uninitialise= d value(s)
=3D=3D2337=3D=3D=C2=A0=C2=A0=C2=A0 at 0x319176: CWallet::LoadKeyMetadata(CP= ubKey const&, CKeyMetadata const&) (wallet.cpp:110)
=3D=3D2337= =3D=3D=C2=A0=C2=A0=C2=A0 by 0x33645A: ReadKeyValue(CWallet*, CDataStream&am= p;, CDataStream&, CWalletScanState&, std::string&, std::string&= amp;) (walletdb.cpp:509)
=3D=3D2337=3D=3D=C2=A0=C2=A0=C2=A0 by 0x3374F0: CWalletDB::LoadWallet(CWall= et*) (walletdb.cpp:623)
=3D=3D2337=3D=3D=C2=A0=C2=A0=C2=A0 by 0x3218FD: = CWallet::LoadWallet(bool&) (wallet.cpp:1485)
=3D=3D2337=3D=3D=C2=A0= =C2=A0=C2=A0 by 0x157F16: AppInit2(boost::thread_group&) (init.cpp:958)=
=3D=3D2337=3D=3D=C2=A0=C2=A0=C2=A0 by 0x140142: AppInit(int, char**) (bitco= ind.cpp:143)
=3D=3D2337=3D=3D=C2=A0=C2=A0=C2=A0 by 0x13649E: main (bitco= ind.cpp:180)
=3D=3D2337=3D=3D

The bug occurs here because n= TimeFirstKey is not initialized when the wallet is instantiated:

wallet.cpp:63
=C2=A0=C2=A0=C2=A0 if (!nTimeFirstKey || nCreationTime= < nTimeFirstKey)
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 nTimeFir= stKey =3D nCreationTime;


I fixed it in my fork:
diff --git a/src/wallet.h b/src/wallet.h
index 9607415..b78045f 100644=
--- a/src/wallet.h
+++ b/src/wallet.h
@@ -163,6 +163,7 @@ public:
= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 nOrderPosNext =3D 0;
= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 nNextResend =3D 0;
=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 nLastResend =3D 0;
+=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 nTimeFirstKey =3D 0;
=C2=A0=C2=A0= =C2=A0=C2=A0 }

If this fix is ok please pull from my GitHub fork; username on GitHub is tm= 314159.

Toshi


-----------------------------------------------------------------------= -------
Time is money. Stop wasting it! Get your web API in 5 minutes.
www.restlet.c= om/download
http://p.sf.net/s= fu/restlet
_______________________________________________
Bitcoin-development mailing list
Bitcoin-develo= pment@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bitcoin-de= velopment

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