cli gridcoinresearchd running, gui gridcoinresearch-qt does not get lock (shows alert box) and segfaults after close #1872
Description
Hello,
This is under Linux (Ubtunu bionic, Richard's PPA-provided packages) , i.e. remotely logged in from a Windows machine with X display forwarding. It is a completely new 5.0 install, gridcoinresearchd started, responsive but non-informative about my wallet, wanted to start the GUI to it to learn if there is extra information for me. I presume gridcoinresearchd to be still syncing, at least the disk space still grows it occupies (about 700MB).
While gridcoinresearchd is running, gridcoinresearch complains in an alert box that it cannot get hold of the lock. After closing the window, gridcoinresearch (not researchd) segfaults. This is very reproducible. So much so that I took the freedom to add a backtrace below.
The biggest problem I had was that the altert box was appearing behind (i.e. invisibly) behind the fancy gridcoin splash screen. A tiny bit was visible for me that after quite a wait (presumed it syncing) eventually discovered. That is quite a no-go as I am confident you will agree.
Many thanks and regards,
Steffen
Core was generated by `gridcoinresearch'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 __GI___pthread_mutex_lock (mutex=0x0) at ../nptl/pthread_mutex_lock.c:65
65 ../nptl/pthread_mutex_lock.c: No such file or directory.
[Current thread is 1 (Thread 0x7f1a801f1780 (LWP 11317))]
(gdb) bt
#0 __GI___pthread_mutex_lock (mutex=0x0) at ../nptl/pthread_mutex_lock.c:65
#1 0x000055ba61d32992 in __gthread_mutex_lock (__mutex=0x7fff6b5df1a0) at /usr/include/x86_64-linux-gnu/c++/7/bits/gthr-default.h:748
#2 __gthread_recursive_mutex_lock (__mutex=0x7fff6b5df1a0) at /usr/include/x86_64-linux-gnu/c++/7/bits/gthr-default.h:810
#3 std::recursive_mutex::lock (this=0x7fff6b5df1a0) at /usr/include/c++/7/mutex:107
#4 AnnotatedMixin<std::recursive_mutex>::lock (this=0x7fff6b5df1a0) at ./sync.h:58
#5 std::unique_lock<CCriticalSection>::lock (this=0x7fff6b5df1a0) at /usr/include/c++/7/bits/std_mutex.h:267
#6 CCriticalBlock::Enter (pszName=<optimized out>, pszFile=<optimized out>, nLine=<optimized out>, this=0x7fff6b5df1a0) at ./sync.h:121
#7 CCriticalBlock::CCriticalBlock (this=this@entry=0x7fff6b5df1a0, mutexIn=..., fTry=fTry@entry=false, nLine=<optimized out>, pszFile=<optimized out>, pszName=<optimized out>) at ./sync.h:142
#8 0x000055ba61d336be in BanMan::GetBanned (this=0x0, banmap=std::map with 0 elements) at banman.cpp:181
#9 0x000055ba61cfc878 in BanTablePriv::refreshBanlist (this=0x55ba63843cc0) at qt/bantablemodel.cpp:53
#10 BanTableModel::refresh (this=this@entry=0x55ba63861ed0) at qt/bantablemodel.cpp:168
#11 0x000055ba61cfcc4f in BanTableModel::BanTableModel (this=0x55ba63861ed0, parent=<optimized out>) at qt/bantablemodel.cpp:93
#12 0x000055ba61c51be3 in ClientModel::ClientModel (this=0x7fff6b5df560, optionsModel=<optimized out>, parent=<optimized out>) at qt/clientmodel.cpp:29
#13 0x000055ba61c2a726 in StartGridcoinQt (argc=<optimized out>, argv=0x7fff6b5e03e8) at qt/bitcoin.cpp:475
#14 0x000055ba61c118a8 in main (argc=1, argv=0x7fff6b5e03e8) at qt/bitcoin.cpp:280