sometimes dash-qt crashes

[mr-tron]

dash-qt: /home/ubuntu/build/dash/depends/i686-pc-linux-gnu/share/../include/boost/thread/pthread/recursive_mutex.hpp:113: void boost::recursive_mutex::lock(): Assertion `!pthread_mutex_lock(&m)' failed.

always during mixing via tor proxy.

[tgflynn]

What version of Ubuntu are you running (lsb_release -a) ?

Also did you build dash-qt yourself or use the official binary ?

[mr-tron]

I running whonix (binary it`s debian 8 jessie with some special configs). i686 arch last official release 0.12.1.5 binary from dash.org Dash QT crashes 2-3 times every day.

[tkanerva]

I am also seeing most likely the same issue. Crashes are always related to Darksend (ie. coin mixing).

Debian/8.9 here (jessie), with libboost-1.55 from .debs. Compiled with --with-incompatible-bdb, and with debug symbols. Host is x86_64 kvm-based vps but this happens even on bare metal (tested).

I managed to get a stack trace by attaching gdb to the dashd process. By looking at the trace and the source code, it makes me think some pointers are getting corrupted somewhere.

(gdb) continue Continuing.

Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7efd977fe700 (LWP 3461)] __pthread_mutex_trylock (mutex=0x1f0) at ../nptl/pthread_mutex_trylock.c:43 43 ../nptl/pthread_mutex_trylock.c: No such file or directory. (gdb) bt

0 __pthread_mutex_trylock (mutex=0x1f0) at ../nptl/pthread_mutex_trylock.c:43

1 0x0000000000721096 in try_lock (this=0x1f0) at /usr/include/boost/thread/pthread/recursive_mutex.hpp:120

2 try_lock (this=0x1f0) at sync.h:70

3 try_lock (this=) at /usr/include/boost/thread/lock_types.hpp:361

4 TryEnter (pszName=, pszFile=, nLine=, this=) at sync.h:125

5 CMutexLock (fTry=true, nLine=486, pszFile=0x92d748 "darksend.cpp", pszName=0x812c08 "pwalletMain->cs_wallet", mutexIn=..., this=) at sync.h:135

6 CDarksendPool::UnlockCoins (this=this@entry=0xcb1c00 ) at darksend.cpp:486

7 0x0000000000733ed3 in CDarksendPool::CheckTimeout (this=this@entry=0xcb1c00 ) at darksend.cpp:822

8 0x00000000007341ff in ThreadCheckDarkSendPool () at darksend.cpp:2511

9 0x00007efdb16e5aea in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.55.0

10 0x00007efdafa04064 in start_thread (arg=0x7efd977fe700) at pthread_create.c:309

11 0x00007efdaf73962d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

[mr-tron]

I gave more memory to virtual machine and crashes gone. But it wasn`t OOM.

[tkanerva]

I took off "-disablewallet" switch from my dashd command line params, and now the crashes are mysteriously gone.

[nmarley]

Obsolete