[Pkg-tigervnc-devel] Bug#923962: 923962: tigervnc-standalone-server: crashes on ARM after VncAuth
Bernhard Übelacker
bernhardu at mailbox.org
Thu Apr 11 23:38:03 BST 2019
Dear Maintainer,
I tried to triage that issue and came to this try and catch block:
146 try {
147 PlainPasswd plainPassword(obfuscated);
148 password->replaceBuf(plainPassword.takeBuf());
149 PlainPasswd plainPasswordReadOnly(obfuscatedReadOnly);
150 readOnlyPassword->replaceBuf(plainPasswordReadOnly.takeBuf());
151 } catch (...) {
152 }
In line 149 a new object is tried to be constructed while there
is no readonly password configured:
(gdb) print obfuscatedReadOnly
$2 = {<rfb::CharArray> = {buf = 0xaaaad89b3a10 "\b1\236\253\377\377"}, length = 0}
Now in the constuctor an exception is thrown in line 46:
44 PlainPasswd::PlainPasswd(const ObfuscatedPasswd& obfPwd) : CharArray(9) {
45 if (obfPwd.length < 8)
46 throw rdr::Exception("bad obfuscated password length");
Now I think below __cxa_throw something goes wrong.
As far as I see in libunwind we receive from unw_get_proc_info
a -10 which leads to a:
60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
61 return _URC_FATAL_PHASE1_ERROR;
Therefore in __cxa_throw std::terminate() is called:
93 // Some sort of unwinding error. Note that terminate is a handler.
94 __cxa_begin_catch (&header->exc.unwindHeader);
95 std::terminate ();
This std::terminate "just" sends a signal that is catched by OsSigHandler.
So I am unsure who has to be asked for.
Should this issue be forwarded to libunwind8 ?
Attached some debugging attempts.
Kind regards,
Bernhard
Problem seem to start here:
(gdb) bt
#0 0x0000ffff958ebed8 in _Unwind_RaiseException (exception_object=exception_object at entry=0xaaab147e2960) at unwind/RaiseException.c:60
#1 0x0000ffff953afba4 in __cxxabiv1::__cxa_throw (obj=obj at entry=0xaaab147e2980, tinfo=0xaaaae06f4df8 <typeinfo for rdr::Exception>, dest=0xaaaae05b57e8 <rdr::Exception::~Exception()>) at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:90
#2 0x0000aaaae05ee4d4 in rfb::PlainPasswd::PlainPasswd (this=0xffffe2f00d00, obfPwd=...) at ./common/rfb/Password.cxx:46
#3 0x0000aaaae05dd144 in rfb::VncAuthPasswdParameter::getVncAuthPasswd (this=<optimized out>, password=0xffffe2f00d90, readOnlyPassword=0xffffe2f00d98) at ./common/rfb/SSecurityVncAuth.cxx:149
#4 0x0000aaaae05dd5a8 in rfb::SSecurityVncAuth::processMsg (this=0xaaab148571e0, sc=<optimized out>) at ./common/rfb/SSecurityVncAuth.cxx:93
#5 0x0000aaaae05d5348 in rfb::SConnection::processSecurityMsg (this=0xaaab1480eea0) at ./common/rfb/SConnection.cxx:213
#6 0x0000aaaae05e1f64 in rfb::VNCSConnectionST::processMessages (this=0xaaab1480eea0) at ./common/rfb/VNCSConnectionST.cxx:151
#7 0x0000aaaae05bf178 in XserverDesktop::handleSocketEvent (this=this at entry=0xaaab14497f70, fd=fd at entry=10, sockserv=0xaaab144ae920, read=read at entry=true, write=write at entry=false) at ././unix/xserver/hw/vnc/XserverDesktop.cc:428
#8 0x0000aaaae05bf28c in XserverDesktop::handleSocketEvent (this=0xaaab14497f70, fd=10, read=<optimized out>, write=<optimized out>) at ././unix/xserver/hw/vnc/XserverDesktop.cc:377
#9 0x0000aaaae065e2d8 in ospoll_wait (ospoll=0xaaab14497b80, timeout=<optimized out>) at ././unix/xserver/os/ospoll.c:651
#10 0x0000aaaae0657090 in WaitForSomething (are_ready=0) at ././unix/xserver/os/WaitFor.c:208
#11 0x0000aaaae060f774 in Dispatch () at ././unix/xserver/dix/dispatch.c:421
#12 0x0000aaaae0614ae8 in dix_main (argc=20, argv=0xffffe2f02218, envp=0xffffe2f022c0) at ././unix/xserver/dix/main.c:276
#13 0x0000ffff950ecd24 in __libc_start_main (main=0xaaaae04e3150 <main>, argc=20, argv=0xffffe2f02218, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=<optimized out>) at ../csu/libc-start.c:308
#14 0x0000aaaae04e49c0 in _start () at /usr/include/c++/8/bits/stl_tree.h:210
Final backtrace:
(gdb) bt
#0 __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x0000ffff950ec8e8 in __GI_abort () at abort.c:79
#2 0x0000aaaae06604dc in OsAbort () at ././unix/xserver/os/utils.c:1350
#3 0x0000aaaae0665c24 in AbortServer () at ././unix/xserver/os/log.c:879
#4 0x0000aaaae0666984 in FatalError (f=f at entry=0xaaaae0685890 "Caught signal %d (%s). Server aborting\n") at ././unix/xserver/os/log.c:1017
#5 0x0000aaaae065d8b4 in OsSigHandler (unused=<optimized out>, sip=0xffffe2eff670, signo=6) at ././unix/xserver/os/osinit.c:156
#6 OsSigHandler (signo=6, sip=0xffffe2eff670, unused=<optimized out>) at ././unix/xserver/os/osinit.c:110
#7 <signal handler called>
#8 __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#9 0x0000ffff950ec8e8 in __GI_abort () at abort.c:79
#10 0x0000ffff953b1ac4 in __gnu_cxx::__verbose_terminate_handler () at ../../../../src/libstdc++-v3/libsupc++/vterminate.cc:50
#11 0x0000ffff953af8ac in __cxxabiv1::__terminate (handler=<optimized out>) at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:47
#12 0x0000ffff953af8f8 in std::terminate () at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:57
#13 0x0000ffff953afc10 in __cxxabiv1::__cxa_rethrow () at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:133
#14 0x0000ffff953b1a60 in __gnu_cxx::__verbose_terminate_handler () at ../../../../src/libstdc++-v3/libsupc++/vterminate.cc:80
#15 0x0000ffff953af8ac in __cxxabiv1::__terminate (handler=<optimized out>) at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:47
#16 0x0000ffff953af8f8 in std::terminate () at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:57
#17 0x0000ffff953afbb0 in __cxxabiv1::__cxa_throw (obj=obj at entry=0xaaab147e2980, tinfo=0xaaaae06f4df8 <typeinfo for rdr::Exception>, dest=0xaaaae05b57e8 <rdr::Exception::~Exception()>) at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:95
#18 0x0000aaaae05ee4d4 in rfb::PlainPasswd::PlainPasswd (this=0xffffe2f00d00, obfPwd=...) at ./common/rfb/Password.cxx:46
#19 0x0000aaaae05dd144 in rfb::VncAuthPasswdParameter::getVncAuthPasswd (this=<optimized out>, password=0xffffe2f00d90, readOnlyPassword=0xffffe2f00d98) at ./common/rfb/SSecurityVncAuth.cxx:149
#20 0x0000aaaae05dd5a8 in rfb::SSecurityVncAuth::processMsg (this=0xaaab148571e0, sc=<optimized out>) at ./common/rfb/SSecurityVncAuth.cxx:93
#21 0x0000aaaae05d5348 in rfb::SConnection::processSecurityMsg (this=0xaaab1480eea0) at ./common/rfb/SConnection.cxx:213
#22 0x0000aaaae05e1f64 in rfb::VNCSConnectionST::processMessages (this=0xaaab1480eea0) at ./common/rfb/VNCSConnectionST.cxx:151
#23 0x0000aaaae05bf178 in XserverDesktop::handleSocketEvent (this=this at entry=0xaaab14497f70, fd=fd at entry=10, sockserv=0xaaab144ae920, read=read at entry=true, write=write at entry=false) at ././unix/xserver/hw/vnc/XserverDesktop.cc:428
#24 0x0000aaaae05bf28c in XserverDesktop::handleSocketEvent (this=0xaaab14497f70, fd=10, read=<optimized out>, write=<optimized out>) at ././unix/xserver/hw/vnc/XserverDesktop.cc:377
#25 0x0000aaaae065e2d8 in ospoll_wait (ospoll=0xaaab14497b80, timeout=<optimized out>) at ././unix/xserver/os/ospoll.c:651
#26 0x0000aaaae0657090 in WaitForSomething (are_ready=0) at ././unix/xserver/os/WaitFor.c:208
#27 0x0000aaaae060f774 in Dispatch () at ././unix/xserver/dix/dispatch.c:421
#28 0x0000aaaae0614ae8 in dix_main (argc=20, argv=0xffffe2f02218, envp=0xffffe2f022c0) at ././unix/xserver/dix/main.c:276
#29 0x0000ffff950ecd24 in __libc_start_main (main=0xaaaae04e3150 <main>, argc=20, argv=0xffffe2f02218, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=<optimized out>) at ../csu/libc-start.c:308
#30 0x0000aaaae04e49c0 in _start () at /usr/include/c++/8/bits/stl_tree.h:210
-------------- next part --------------
#923962, tigervnc-standalone-server: crashes on ARM after VncAuth
# Buster aarch64 qemu VM 2019-04-11
apt update
apt dist-upgrade
apt install dpkg-dev devscripts systemd-coredump net-tools psmisc openbox mc gdb tigervnc-standalone-server tigervnc-standalone-server-dbgsym libstdc++6-8-dbg libunwind8-dbgsym
mkdir /home/benutzer/source/tigervnc-standalone-server/orig -p
cd /home/benutzer/source/tigervnc-standalone-server/orig
apt source tigervnc-standalone-server
cd
mkdir /home/benutzer/source/libstdc++6/orig -p
cd /home/benutzer/source/libstdc++6/orig
apt source libstdc++6
cd gcc-8-8.3.0
dpkg-buildpackage -b -d
cd
mkdir /home/benutzer/source/libunwind8/orig -p
cd /home/benutzer/source/libunwind8/orig
apt source libunwind8
cd
# At aarch64 host
tigervncserver
# At another host e.g. amd64
xtigervncviewer 127.0.0.1:5901
gdb -q --pid $(pidof Xtigervnc)
set width 0
set pagination off
directory /home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg
directory /home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0
directory /home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0/src/libgo/go/os
directory /home/benutzer/source/libunwind8/orig/libunwind-1.2.1/src
b rfb::VncAuthPasswdParameter::getVncAuthPasswd
cont
b rfb::PlainPasswd::PlainPasswd
cont
cont
b __cxxabiv1::__cxa_throw
cont
b _Unwind_RaiseException
cont
b _ULaarch64_dwarf_make_proc_info
cont
#########
benutzer at debian:~$ tigervncserver
New 'debian:1 (benutzer)' desktop at :1 on machine debian
Starting applications specified in /etc/X11/Xvnc-session
Log file is /home/benutzer/.vnc/debian:1.log
Use xtigervncviewer -SecurityTypes VncAuth -passwd /home/benutzer/.vnc/passwd :1 to connect to the VNC server.
benutzer at debian:~$ cat /home/benutzer/.vnc/debian:1.log
Xvnc TigerVNC 1.9.0 - built Dec 1 2018 21:51:29
Copyright (C) 1999-2018 TigerVNC Team and many others (see README.rst)
See http://www.tigervnc.org for information on TigerVNC.
Underlying X server release 12003000, The X.Org Foundation
Thu Apr 11 18:23:55 2019
vncext: VNC extension running!
vncext: Listening for VNC connections on local interface(s), port 5901
vncext: created VNC server for screen 0
benutzer at debian:~$ pstree -p
systemd(1)─┬─Xtigervnc(3070)─┬─{Xtigervnc}(3084)
│ ├─{Xtigervnc}(3085)
│ ├─{Xtigervnc}(3086)
│ ├─{Xtigervnc}(3087)
│ ├─{Xtigervnc}(3088)
│ ├─{Xtigervnc}(3089)
│ ├─{Xtigervnc}(3090)
│ └─{Xtigervnc}(3091)
├─agetty(396)
├─agetty(397)
├─cron(392)
├─dbus-daemon(389)
├─dhclient(363)
├─rsyslogd(386)─┬─{rsyslogd}(393)
│ ├─{rsyslogd}(394)
│ └─{rsyslogd}(395)
├─sshd(398)─┬─sshd(400)───sshd(412)───bash(413)───su(416)───bash(417)
│ └─sshd(427)───sshd(436)───bash(437)───pstree(3122)
├─systemd(403)───(sd-pam)(404)
├─systemd-journal(225)
├─systemd-logind(390)
├─systemd-timesyn(367)───{systemd-timesyn}(384)
├─systemd-udevd(250)
└─tigervncserver(3071)───Xvnc-session(3072)─┬─openbox(3074)─┬─ssh-agent(3105)
│ └─xdg-autostart(3107)
└─vncconfig(3073)
benutzer at debian:~$ netstat -anp | grep -i vnc
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
tcp 0 0 127.0.0.1:5901 0.0.0.0:* LISTEN 3070/Xtigervnc
tcp6 0 0 ::1:5901 :::* LISTEN 3070/Xtigervnc
unix 2 [ ACC ] STREAM LISTENING 21592 3070/Xtigervnc /tmp/.X11-unix/X1
unix 2 [ ACC ] STREAM LISTENING 21591 3070/Xtigervnc @/tmp/.X11-unix/X1
unix 3 [ ] STREAM CONNECTED 23556 3073/vncconfig
unix 3 [ ] STREAM CONNECTED 21598 3070/Xtigervnc @/tmp/.X11-unix/X1
unix 3 [ ] STREAM CONNECTED 21609 3070/Xtigervnc @/tmp/.X11-unix/X1
#########
From amd64 host:
$ xtigervncviewer 127.0.0.1:5901
TigerVNC Viewer 64-bit v1.9.0
Built on: 2018-12-01 21:51
Copyright (C) 1999-2018 TigerVNC Team and many others (see README.rst)
See http://www.tigervnc.org for information on TigerVNC.
Thu Apr 11 18:32:05 2019
DecodeManager: Detected 16 CPU core(s)
DecodeManager: Creating 4 decoder thread(s)
CConn: connected to host 127.0.0.1 port 5901
CConnection: Server supports RFB protocol version 3.8
CConnection: Using RFB protocol version 3.8
CConnection: Choosing security type VncAuth(2)
Thu Apr 11 18:32:14 2019
CConn: End of stream
#########
benutzer at debian:~$ cat /home/benutzer/.vnc/debian:1.log
...
Thu Apr 11 18:32:05 2019
Connections: accepted: 127.0.0.1::40830
SConnection: Client needs protocol version 3.8
SConnection: Client requests security type VncAuth(2)
terminate called after throwing an instance of 'rdr::Exception'
terminate called recursively
(EE)
(EE) Backtrace:
(EE) 0: /usr/bin/Xtigervnc (OsLookupColor+0x1a8) [0xaaaaaceeb9d0]
(EE) unw_get_proc_info failed: no unwind info found [-10]
(EE)
(EE)
Fatal server error:
(EE) Caught signal 6 (Aborted). Server aborting
(EE)
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":1"
after 211 requests (210 known processed) with 0 events remaining.
Killing Xtigervnc process ID 3070... which was already dead
Cleaning stale pidfile '/home/benutzer/.vnc/debian:1.pid'!
#########
benutzer at debian:~$ pstree -p
systemd(1)─┬─Xtigervnc(3161)─┬─{Xtigervnc}(3173)
│ ├─{Xtigervnc}(3174)
│ ├─{Xtigervnc}(3175)
│ ├─{Xtigervnc}(3176)
│ ├─{Xtigervnc}(3177)
│ ├─{Xtigervnc}(3178)
│ ├─{Xtigervnc}(3179)
│ └─{Xtigervnc}(3180)
benutzer at debian:~$ gdb -q --pid $(pidof Xtigervnc)
Attaching to process 3161
[New LWP 3173]
[New LWP 3174]
[New LWP 3175]
[New LWP 3176]
[New LWP 3177]
[New LWP 3178]
[New LWP 3179]
[New LWP 3180]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/aarch64-linux-gnu/libthread_db.so.1".
0x0000ffffab946ad0 in __GI_epoll_pwait (epfd=<optimized out>, events=events at entry=0xffffe0252108, maxevents=maxevents at entry=256, timeout=<optimized out>, set=set at entry=0x0)
at ../sysdeps/unix/sysv/linux/epoll_pwait.c:42
42 ../sysdeps/unix/sysv/linux/epoll_pwait.c: No such file or directory.
(gdb) set width 0
(gdb) set pagination off
(gdb) directory /home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg
Source directories searched: /home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg:$cdir:$cwd
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" received signal SIGABRT, Aborted.
__GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
50 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt
#0 __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x0000ffffab8978e8 in __GI_abort () at abort.c:79
#2 0x0000ffffabb5cac4 in __gnu_cxx::__verbose_terminate_handler() () from /lib/aarch64-linux-gnu/libstdc++.so.6
#3 0x0000ffffabb5a8ac in ?? () from /lib/aarch64-linux-gnu/libstdc++.so.6
#4 0x0000ffffabb5a8f8 in std::terminate() () from /lib/aarch64-linux-gnu/libstdc++.so.6
#5 0x0000ffffabb5ac10 in __cxa_rethrow () from /lib/aarch64-linux-gnu/libstdc++.so.6
#6 0x0000ffffabb5ca60 in __gnu_cxx::__verbose_terminate_handler() () from /lib/aarch64-linux-gnu/libstdc++.so.6
#7 0x0000ffffabb5a8ac in ?? () from /lib/aarch64-linux-gnu/libstdc++.so.6
#8 0x0000ffffabb5a8f8 in std::terminate() () from /lib/aarch64-linux-gnu/libstdc++.so.6
#9 0x0000ffffabb5abb0 in __cxa_throw () from /lib/aarch64-linux-gnu/libstdc++.so.6
#10 0x0000aaaab58244d4 in rfb::PlainPasswd::PlainPasswd (this=0xffffe0251ed0, obfPwd=...) at ./common/rfb/Password.cxx:46
#11 0x0000aaaab5813144 in rfb::VncAuthPasswdParameter::getVncAuthPasswd (this=<optimized out>, password=0xffffe0251f60, readOnlyPassword=0xffffe0251f68) at ./common/rfb/SSecurityVncAuth.cxx:149
#12 0x0000aaaab58135a8 in rfb::SSecurityVncAuth::processMsg (this=0xaaaad89b5270, sc=<optimized out>) at ./common/rfb/SSecurityVncAuth.cxx:93
#13 0x0000aaaab580b348 in rfb::SConnection::processSecurityMsg (this=0xaaaad896cf30) at ./common/rfb/SConnection.cxx:213
#14 0x0000aaaab5817f64 in rfb::VNCSConnectionST::processMessages (this=0xaaaad896cf30) at ./common/rfb/VNCSConnectionST.cxx:151
#15 0x0000aaaab57f5178 in XserverDesktop::handleSocketEvent (this=this at entry=0xaaaad85f5f70, fd=fd at entry=10, sockserv=0xaaaad860c920, read=read at entry=true, write=write at entry=false) at ././unix/xserver/hw/vnc/XserverDesktop.cc:428
#16 0x0000aaaab57f528c in XserverDesktop::handleSocketEvent (this=0xaaaad85f5f70, fd=10, read=<optimized out>, write=<optimized out>) at ././unix/xserver/hw/vnc/XserverDesktop.cc:377
#17 0x0000aaaab58942d8 in ospoll_wait (ospoll=0xaaaad85f5b80, timeout=<optimized out>) at ././unix/xserver/os/ospoll.c:651
#18 0x0000aaaab588d090 in WaitForSomething (are_ready=0) at ././unix/xserver/os/WaitFor.c:208
#19 0x0000aaaab5845774 in Dispatch () at ././unix/xserver/dix/dispatch.c:421
#20 0x0000aaaab584aae8 in dix_main (argc=20, argv=0xffffe02533e8, envp=0xffffe0253490) at ././unix/xserver/dix/main.c:276
#21 0x0000ffffab897d24 in __libc_start_main (main=0xaaaab5719150 <main>, argc=20, argv=0xffffe02533e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=<optimized out>) at ../csu/libc-start.c:308
#22 0x0000aaaab571a9c0 in _start () at ././unix/xserver/hw/vnc/XserverDesktop.cc:606
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) generate-core-file ~/core.Xtigervnc.3161
warning: target file /proc/3161/cmdline contained unexpected null characters
Saved corefile /home/benutzer/core.Xtigervnc.3161
Without debug symbols:
Core was generated by `/usr/bin/Xtigervnc'.
Program terminated with signal SIGABRT, Aborted.
#0 __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
50 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
[Current thread is 1 (Thread 0xffffaafec010 (LWP 3161))]
(gdb) set width 0
(gdb) set pagination off
(gdb) bt
#0 __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x0000ffffab8978e8 in __GI_abort () at abort.c:79
#2 0x0000ffffabb5cac4 in __gnu_cxx::__verbose_terminate_handler() () from /lib/aarch64-linux-gnu/libstdc++.so.6
#3 0x0000ffffabb5a8ac in ?? () from /lib/aarch64-linux-gnu/libstdc++.so.6
#4 0x0000ffffabb5a8f8 in std::terminate() () from /lib/aarch64-linux-gnu/libstdc++.so.6
#5 0x0000ffffabb5ac10 in __cxa_rethrow () from /lib/aarch64-linux-gnu/libstdc++.so.6
#6 0x0000ffffabb5ca60 in __gnu_cxx::__verbose_terminate_handler() () from /lib/aarch64-linux-gnu/libstdc++.so.6
#7 0x0000ffffabb5a8ac in ?? () from /lib/aarch64-linux-gnu/libstdc++.so.6
#8 0x0000ffffabb5a8f8 in std::terminate() () from /lib/aarch64-linux-gnu/libstdc++.so.6
#9 0x0000ffffabb5abb0 in __cxa_throw () from /lib/aarch64-linux-gnu/libstdc++.so.6
#10 0x0000aaaab58244d4 in rfb::PlainPasswd::PlainPasswd(rfb::ObfuscatedPasswd const&) ()
#11 0x0000aaaab5813144 in rfb::VncAuthPasswdParameter::getVncAuthPasswd(rfb::PlainPasswd*, rfb::PlainPasswd*) ()
#12 0x0000aaaab58135a8 in rfb::SSecurityVncAuth::processMsg(rfb::SConnection*) ()
#13 0x0000aaaab580b348 in rfb::SConnection::processSecurityMsg() ()
#14 0x0000aaaab5817f64 in rfb::VNCSConnectionST::processMessages() ()
#15 0x0000aaaab57f5178 in XserverDesktop::handleSocketEvent(int, network::SocketServer*, bool, bool) ()
#16 0x0000aaaab57f528c in XserverDesktop::handleSocketEvent(int, bool, bool) ()
#17 0x0000aaaab58942d8 in ospoll_wait ()
#18 0x0000aaaab588d090 in WaitForSomething ()
#19 0x0000aaaab5845774 in Dispatch ()
#20 0x0000aaaab584aae8 in dix_main ()
#21 0x0000ffffab897d24 in __libc_start_main (main=0xaaaab5719150 <main>, argc=20, argv=0xffffe02533e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=<optimized out>) at ../csu/libc-start.c:308
#22 0x0000aaaab571a9c0 in _start ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) up
#1 0x0000ffffab8978e8 in __GI_abort () at abort.c:79
79 abort.c: No such file or directory.
(gdb)
#2 0x0000ffffabb5cac4 in __gnu_cxx::__verbose_terminate_handler() () from /lib/aarch64-linux-gnu/libstdc++.so.6
(gdb)
#3 0x0000ffffabb5a8ac in ?? () from /lib/aarch64-linux-gnu/libstdc++.so.6
(gdb)
#4 0x0000ffffabb5a8f8 in std::terminate() () from /lib/aarch64-linux-gnu/libstdc++.so.6
(gdb)
#5 0x0000ffffabb5ac10 in __cxa_rethrow () from /lib/aarch64-linux-gnu/libstdc++.so.6
(gdb)
#6 0x0000ffffabb5ca60 in __gnu_cxx::__verbose_terminate_handler() () from /lib/aarch64-linux-gnu/libstdc++.so.6
(gdb)
#7 0x0000ffffabb5a8ac in ?? () from /lib/aarch64-linux-gnu/libstdc++.so.6
(gdb)
#8 0x0000ffffabb5a8f8 in std::terminate() () from /lib/aarch64-linux-gnu/libstdc++.so.6
(gdb)
#9 0x0000ffffabb5abb0 in __cxa_throw () from /lib/aarch64-linux-gnu/libstdc++.so.6
(gdb)
#10 0x0000aaaab58244d4 in rfb::PlainPasswd::PlainPasswd (this=0xffffe0251ed0, obfPwd=...) at ./common/rfb/Password.cxx:46
46 throw rdr::Exception("bad obfuscated password length");
(gdb) list Password.cxx:43,51
43
44 PlainPasswd::PlainPasswd(const ObfuscatedPasswd& obfPwd) : CharArray(9) {
45 if (obfPwd.length < 8)
46 throw rdr::Exception("bad obfuscated password length"); <<<<<<<<<<<<<<<<<<<<<<
47 deskey(d3desObfuscationKey, DE1);
48 des((rdr::U8*)obfPwd.buf, (rdr::U8*)buf);
49 buf[8] = 0;
50 }
51
(gdb) print obfPwd
$1 = (const rfb::ObfuscatedPasswd &) @0xffffe0251ee8: {<rfb::CharArray> = {buf = 0xaaaad89b3a10 "\b1\236\253\377\377"}, length = 0}
(gdb) up
#11 0x0000aaaab5813144 in rfb::VncAuthPasswdParameter::getVncAuthPasswd (this=<optimized out>, password=0xffffe0251f60, readOnlyPassword=0xffffe0251f68) at ./common/rfb/SSecurityVncAuth.cxx:149
149 PlainPasswd plainPasswordReadOnly(obfuscatedReadOnly);
(gdb) list SSecurityVncAuth.cxx:116,154
116
117 void VncAuthPasswdParameter::getVncAuthPasswd(PlainPasswd *password, PlainPasswd *readOnlyPassword) {
118 ObfuscatedPasswd obfuscated, obfuscatedReadOnly;
119 getData((void**)&obfuscated.buf, &obfuscated.length);
120
121 if (obfuscated.length == 0) {
122 if (passwdFile) {
123 CharArray fname(passwdFile->getData());
124 if (!fname.buf[0]) {
125 vlog.info("neither %s nor %s params set", getName(), passwdFile->getName());
126 return;
127 }
128
129 FILE* fp = fopen(fname.buf, "r");
130 if (!fp) {
131 vlog.error("opening password file '%s' failed",fname.buf);
132 return;
133 }
134
135 vlog.debug("reading password file");
136 obfuscated.buf = new char[8];
137 obfuscated.length = fread(obfuscated.buf, 1, 8, fp);
138 obfuscatedReadOnly.buf = new char[8];
139 obfuscatedReadOnly.length = fread(obfuscatedReadOnly.buf, 1, 8, fp);
140 fclose(fp);
141 } else {
142 vlog.info("%s parameter not set", getName());
143 }
144 }
145
146 try {
147 PlainPasswd plainPassword(obfuscated);
148 password->replaceBuf(plainPassword.takeBuf());
149 PlainPasswd plainPasswordReadOnly(obfuscatedReadOnly); <<<<<<<<<<<<<<<<<<<<<<
150 readOnlyPassword->replaceBuf(plainPasswordReadOnly.takeBuf());
151 } catch (...) {
152 }
153 }
154
(gdb) print obfuscatedReadOnly
$2 = {<rfb::CharArray> = {buf = 0xaaaad89b3a10 "\b1\236\253\377\377"}, length = 0}
(gdb) print obfuscated
$3 = {<rfb::CharArray> = {buf = 0xaaaad89b39c0 "\276\257\357L\b\025", <incomplete sequence \330>}, length = 8}
(gdb) print plainPassword
$4 = {<rfb::CharArray> = {buf = 0x0}, <No data fields>}
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" received signal SIGABRT, Aborted.
__GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
50 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt
#0 __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x0000ffffab8978e8 in __GI_abort () at abort.c:79
#2 0x0000aaaab58964dc in OsAbort () at ././unix/xserver/os/utils.c:1350
#3 0x0000aaaab589bc24 in AbortServer () at ././unix/xserver/os/log.c:879
#4 0x0000aaaab589c984 in FatalError (f=f at entry=0xaaaab58bb890 "Caught signal %d (%s). Server aborting\n") at ././unix/xserver/os/log.c:1017
#5 0x0000aaaab58938b4 in OsSigHandler (unused=<optimized out>, sip=0xffffe0250840, signo=6) at ././unix/xserver/os/osinit.c:156
#6 OsSigHandler (signo=6, sip=0xffffe0250840, unused=<optimized out>) at ././unix/xserver/os/osinit.c:110
#7 <signal handler called>
#8 __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#9 0x0000ffffab8978e8 in __GI_abort () at abort.c:79
#10 0x0000ffffabb5cac4 in __gnu_cxx::__verbose_terminate_handler() () from /lib/aarch64-linux-gnu/libstdc++.so.6
#11 0x0000ffffabb5a8ac in ?? () from /lib/aarch64-linux-gnu/libstdc++.so.6
#12 0x0000ffffabb5a8f8 in std::terminate() () from /lib/aarch64-linux-gnu/libstdc++.so.6
#13 0x0000ffffabb5ac10 in __cxa_rethrow () from /lib/aarch64-linux-gnu/libstdc++.so.6
#14 0x0000ffffabb5ca60 in __gnu_cxx::__verbose_terminate_handler() () from /lib/aarch64-linux-gnu/libstdc++.so.6
#15 0x0000ffffabb5a8ac in ?? () from /lib/aarch64-linux-gnu/libstdc++.so.6
#16 0x0000ffffabb5a8f8 in std::terminate() () from /lib/aarch64-linux-gnu/libstdc++.so.6
#17 0x0000ffffabb5abb0 in __cxa_throw () from /lib/aarch64-linux-gnu/libstdc++.so.6
#18 0x0000aaaab58244d4 in rfb::PlainPasswd::PlainPasswd (this=0xffffe0251ed0, obfPwd=...) at ./common/rfb/Password.cxx:46
#19 0x0000aaaab5813144 in rfb::VncAuthPasswdParameter::getVncAuthPasswd (this=<optimized out>, password=0xffffe0251f60, readOnlyPassword=0xffffe0251f68) at ./common/rfb/SSecurityVncAuth.cxx:149
#20 0x0000aaaab58135a8 in rfb::SSecurityVncAuth::processMsg (this=0xaaaad89b5270, sc=<optimized out>) at ./common/rfb/SSecurityVncAuth.cxx:93
#21 0x0000aaaab580b348 in rfb::SConnection::processSecurityMsg (this=0xaaaad896cf30) at ./common/rfb/SConnection.cxx:213
#22 0x0000aaaab5817f64 in rfb::VNCSConnectionST::processMessages (this=0xaaaad896cf30) at ./common/rfb/VNCSConnectionST.cxx:151
#23 0x0000aaaab57f5178 in XserverDesktop::handleSocketEvent (this=this at entry=0xaaaad85f5f70, fd=fd at entry=10, sockserv=0xaaaad860c920, read=read at entry=true, write=write at entry=false) at ././unix/xserver/hw/vnc/XserverDesktop.cc:428
#24 0x0000aaaab57f528c in XserverDesktop::handleSocketEvent (this=0xaaaad85f5f70, fd=10, read=<optimized out>, write=<optimized out>) at ././unix/xserver/hw/vnc/XserverDesktop.cc:377
#25 0x0000aaaab58942d8 in ospoll_wait (ospoll=0xaaaad85f5b80, timeout=<optimized out>) at ././unix/xserver/os/ospoll.c:651
#26 0x0000aaaab588d090 in WaitForSomething (are_ready=0) at ././unix/xserver/os/WaitFor.c:208
#27 0x0000aaaab5845774 in Dispatch () at ././unix/xserver/dix/dispatch.c:421
#28 0x0000aaaab584aae8 in dix_main (argc=20, argv=0xffffe02533e8, envp=0xffffe0253490) at ././unix/xserver/dix/main.c:276
#29 0x0000ffffab897d24 in __libc_start_main (main=0xaaaab5719150 <main>, argc=20, argv=0xffffe02533e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=<optimized out>) at ../csu/libc-start.c:308
#30 0x0000aaaab571a9c0 in _start () at ././unix/xserver/hw/vnc/XserverDesktop.cc:606
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
# Now even with debug symbols for libstdc++
Thread 1 "Xtigervnc" received signal SIGABRT, Aborted.
__GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
50 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt
#0 __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x0000ffffad1b98e8 in __GI_abort () at abort.c:79
#2 0x0000ffffad47eac4 in __gnu_cxx::__verbose_terminate_handler () at ../../../../src/libstdc++-v3/libsupc++/vterminate.cc:50
#3 0x0000ffffad47c8ac in __cxxabiv1::__terminate (handler=<optimized out>) at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:47
#4 0x0000ffffad47c8f8 in std::terminate () at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:57
#5 0x0000ffffad47cc10 in __cxxabiv1::__cxa_rethrow () at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:133
#6 0x0000ffffad47ea60 in __gnu_cxx::__verbose_terminate_handler () at ../../../../src/libstdc++-v3/libsupc++/vterminate.cc:80
#7 0x0000ffffad47c8ac in __cxxabiv1::__terminate (handler=<optimized out>) at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:47
#8 0x0000ffffad47c8f8 in std::terminate () at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:57
#9 0x0000ffffad47cbb0 in __cxxabiv1::__cxa_throw (obj=obj at entry=0xaaaabedea980, tinfo=0xaaaab1aa1df8 <typeinfo for rdr::Exception>, dest=0xaaaab19627e8 <rdr::Exception::~Exception()>) at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:95
#10 0x0000aaaab199b4d4 in rfb::PlainPasswd::PlainPasswd (this=0xffffe83bfc30, obfPwd=...) at ./common/rfb/Password.cxx:46
#11 0x0000aaaab198a144 in rfb::VncAuthPasswdParameter::getVncAuthPasswd (this=<optimized out>, password=0xffffe83bfcc0, readOnlyPassword=0xffffe83bfcc8) at ./common/rfb/SSecurityVncAuth.cxx:149
#12 0x0000aaaab198a5a8 in rfb::SSecurityVncAuth::processMsg (this=0xaaaabee5f1e0, sc=<optimized out>) at ./common/rfb/SSecurityVncAuth.cxx:93
#13 0x0000aaaab1982348 in rfb::SConnection::processSecurityMsg (this=0xaaaabee16ea0) at ./common/rfb/SConnection.cxx:213
#14 0x0000aaaab198ef64 in rfb::VNCSConnectionST::processMessages (this=0xaaaabee16ea0) at ./common/rfb/VNCSConnectionST.cxx:151
#15 0x0000aaaab196c178 in XserverDesktop::handleSocketEvent (this=this at entry=0xaaaabea9ff70, fd=fd at entry=10, sockserv=0xaaaabeab6920, read=read at entry=true, write=write at entry=false) at ././unix/xserver/hw/vnc/XserverDesktop.cc:428
#16 0x0000aaaab196c28c in XserverDesktop::handleSocketEvent (this=0xaaaabea9ff70, fd=10, read=<optimized out>, write=<optimized out>) at ././unix/xserver/hw/vnc/XserverDesktop.cc:377
#17 0x0000aaaab1a0b2d8 in ospoll_wait (ospoll=0xaaaabea9fb80, timeout=<optimized out>) at ././unix/xserver/os/ospoll.c:651
#18 0x0000aaaab1a04090 in WaitForSomething (are_ready=0) at ././unix/xserver/os/WaitFor.c:208
#19 0x0000aaaab19bc774 in Dispatch () at ././unix/xserver/dix/dispatch.c:421
#20 0x0000aaaab19c1ae8 in dix_main (argc=20, argv=0xffffe83c1148, envp=0xffffe83c11f0) at ././unix/xserver/dix/main.c:276
#21 0x0000ffffad1b9d24 in __libc_start_main (main=0xaaaab1890150 <main>, argc=20, argv=0xffffe83c1148, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=<optimized out>) at ../csu/libc-start.c:308
#22 0x0000aaaab18919c0 in _start () at /usr/include/c++/8/bits/stl_tree.h:210
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
##########
benutzer at debian:~$ gdb -q --pid $(pidof Xtigervnc)
Attaching to process 19121
[New LWP 19135]
[New LWP 19136]
[New LWP 19137]
[New LWP 19138]
[New LWP 19139]
[New LWP 19140]
[New LWP 19141]
[New LWP 19142]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/aarch64-linux-gnu/libthread_db.so.1".
0x0000ffffa5bbbad0 in __GI_epoll_pwait (epfd=<optimized out>, events=events at entry=0xfffffccd21b8, maxevents=maxevents at entry=256, timeout=<optimized out>, set=set at entry=0x0)
at ../sysdeps/unix/sysv/linux/epoll_pwait.c:42
42 ../sysdeps/unix/sysv/linux/epoll_pwait.c: No such file or directory.
(gdb) set width 0
(gdb) set pagination off
(gdb) directory /home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg
Source directories searched: /home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg:$cdir:$cwd
(gdb) directory /home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0
Source directories searched: /home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0:/home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg:$cdir:$cwd
(gdb) directory /home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0/src/libgo/go/os
Source directories searched: /home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0/src/libgo/go/os:/home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0:/home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg:$cdir:$cwd
(gdb) b rfb::VncAuthPasswdParameter::getVncAuthPasswd
Breakpoint 1 at 0xaaaaac7dd010: file ./common/rfb/SSecurityVncAuth.cxx, line 117.
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" hit Breakpoint 1, rfb::VncAuthPasswdParameter::getVncAuthPasswd (this=0xaaaaac905f10 <rfb::SSecurityVncAuth::vncAuthPasswd>, password=0xfffffccd2010, readOnlyPassword=0xfffffccd2018) at ./common/rfb/SSecurityVncAuth.cxx:117
117 void VncAuthPasswdParameter::getVncAuthPasswd(PlainPasswd *password, PlainPasswd *readOnlyPassword) {
(gdb) b rfb::PlainPasswd::PlainPasswd
Breakpoint 2 at 0xaaaaac7ee408: rfb::PlainPasswd::PlainPasswd. (4 locations)
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" hit Breakpoint 2, rfb::PlainPasswd::PlainPasswd (this=0xfffffccd1f78, obfPwd=...) at ./common/rfb/Password.cxx:44
44 PlainPasswd::PlainPasswd(const ObfuscatedPasswd& obfPwd) : CharArray(9) {
(gdb) b __cxxabiv1::__cxa_throw
Breakpoint 3 at 0xffffa5dcfb50: file ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc, line 78.
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" hit Breakpoint 2, rfb::PlainPasswd::PlainPasswd (this=0xfffffccd1f80, obfPwd=...) at ./common/rfb/Password.cxx:44
44 PlainPasswd::PlainPasswd(const ObfuscatedPasswd& obfPwd) : CharArray(9) {
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" hit Breakpoint 3, __cxxabiv1::__cxa_throw (obj=obj at entry=0xaaaae2027a10, tinfo=0xaaaaac8f4df8 <typeinfo for rdr::Exception>, dest=0xaaaaac7b57e8 <rdr::Exception::~Exception()>) at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:78
78 PROBE2 (throw, obj, tinfo);
(gdb) display/i $pc
1: x/i $pc
=> 0xffffa5dcfb50 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))>: stp x29, x30, [sp, #-48]!
(gdb) bt
#0 __cxxabiv1::__cxa_throw (obj=obj at entry=0xaaaae2027a10, tinfo=0xaaaaac8f4df8 <typeinfo for rdr::Exception>, dest=0xaaaaac7b57e8 <rdr::Exception::~Exception()>) at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:78
#1 0x0000aaaaac7ee4d4 in rfb::PlainPasswd::PlainPasswd (this=0xfffffccd1f80, obfPwd=...) at ./common/rfb/Password.cxx:46
#2 0x0000aaaaac7dd144 in rfb::VncAuthPasswdParameter::getVncAuthPasswd (this=<optimized out>, password=0xfffffccd2010, readOnlyPassword=0xfffffccd2018) at ./common/rfb/SSecurityVncAuth.cxx:149
#3 0x0000aaaaac7dd5a8 in rfb::SSecurityVncAuth::processMsg (this=0xaaaae209c270, sc=<optimized out>) at ./common/rfb/SSecurityVncAuth.cxx:93
#4 0x0000aaaaac7d5348 in rfb::SConnection::processSecurityMsg (this=0xaaaae2053f30) at ./common/rfb/SConnection.cxx:213
#5 0x0000aaaaac7e1f64 in rfb::VNCSConnectionST::processMessages (this=0xaaaae2053f30) at ./common/rfb/VNCSConnectionST.cxx:151
#6 0x0000aaaaac7bf178 in XserverDesktop::handleSocketEvent (this=this at entry=0xaaaae1cdcf70, fd=fd at entry=10, sockserv=0xaaaae1cf3920, read=read at entry=true, write=write at entry=false) at ././unix/xserver/hw/vnc/XserverDesktop.cc:428
#7 0x0000aaaaac7bf28c in XserverDesktop::handleSocketEvent (this=0xaaaae1cdcf70, fd=10, read=<optimized out>, write=<optimized out>) at ././unix/xserver/hw/vnc/XserverDesktop.cc:377
#8 0x0000aaaaac85e2d8 in ospoll_wait (ospoll=0xaaaae1cdcb80, timeout=<optimized out>) at ././unix/xserver/os/ospoll.c:651
#9 0x0000aaaaac857090 in WaitForSomething (are_ready=0) at ././unix/xserver/os/WaitFor.c:208
#10 0x0000aaaaac80f774 in Dispatch () at ././unix/xserver/dix/dispatch.c:421
#11 0x0000aaaaac814ae8 in dix_main (argc=20, argv=0xfffffccd3498, envp=0xfffffccd3540) at ././unix/xserver/dix/main.c:276
#12 0x0000ffffa5b0cd24 in __libc_start_main (main=0xaaaaac6e3150 <main>, argc=20, argv=0xfffffccd3498, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=<optimized out>) at ../csu/libc-start.c:308
#13 0x0000aaaaac6e49c0 in _start () at /usr/include/c++/8/bits/stl_tree.h:210
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) nexti
0x0000ffffa5dcfb54 78 PROBE2 (throw, obj, tinfo);
1: x/i $pc
=> 0xffffa5dcfb54 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+4>: mov x29, sp
(gdb)
0x0000ffffa5dcfb58 78 PROBE2 (throw, obj, tinfo);
1: x/i $pc
=> 0xffffa5dcfb58 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+8>: stp x19, x20, [sp, #16]
(gdb)
0x0000ffffa5dcfb5c 78 PROBE2 (throw, obj, tinfo);
1: x/i $pc
=> 0xffffa5dcfb5c <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+12>: mov x19, x0
(gdb)
0x0000ffffa5dcfb60 78 PROBE2 (throw, obj, tinfo);
1: x/i $pc
=> 0xffffa5dcfb60 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+16>: mov x20, x1
(gdb)
0x0000ffffa5dcfb64 78 PROBE2 (throw, obj, tinfo);
1: x/i $pc
=> 0xffffa5dcfb64 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+20>: str x2, [sp, #40]
(gdb)
0x0000ffffa5dcfb68 78 PROBE2 (throw, obj, tinfo);
1: x/i $pc
=> 0xffffa5dcfb68 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+24>: nop
(gdb)
80 __cxa_eh_globals *globals = __cxa_get_globals ();
1: x/i $pc
=> 0xffffa5dcfb6c <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+28>: bl 0xffffa5dca9f0 <__cxa_get_globals at plt>
(gdb)
0x0000ffffa5dcfb70 80 __cxa_eh_globals *globals = __cxa_get_globals ();
1: x/i $pc
=> 0xffffa5dcfb70 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+32>: mov x4, x0
(gdb)
81 globals->uncaughtExceptions += 1;
1: x/i $pc
=> 0xffffa5dcfb74 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+36>: ldr x2, [sp, #40]
(gdb)
0x0000ffffa5dcfb78 81 globals->uncaughtExceptions += 1;
1: x/i $pc
=> 0xffffa5dcfb78 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+40>: mov x1, x20
(gdb)
0x0000ffffa5dcfb7c 81 globals->uncaughtExceptions += 1;
1: x/i $pc
=> 0xffffa5dcfb7c <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+44>: ldr w3, [x4, #8]
(gdb)
0x0000ffffa5dcfb80 81 globals->uncaughtExceptions += 1;
1: x/i $pc
=> 0xffffa5dcfb80 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+48>: mov x0, x19
(gdb)
0x0000ffffa5dcfb84 81 globals->uncaughtExceptions += 1;
1: x/i $pc
=> 0xffffa5dcfb84 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+52>: add w3, w3, #0x1
(gdb)
0x0000ffffa5dcfb88 81 globals->uncaughtExceptions += 1;
1: x/i $pc
=> 0xffffa5dcfb88 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+56>: str w3, [x4, #8]
(gdb)
83 __cxa_refcounted_exception *header =
1: x/i $pc
=> 0xffffa5dcfb8c <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+60>: bl 0xffffa5dcaa70 <__cxa_init_primary_exception at plt>
(gdb)
85 header->referenceCount = 1;
1: x/i $pc
=> 0xffffa5dcfb90 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+64>: mov x19, x0
(gdb)
0x0000ffffa5dcfb94 85 header->referenceCount = 1;
1: x/i $pc
=> 0xffffa5dcfb94 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+68>: mov w0, #0x1 // #1
(gdb)
0x0000ffffa5dcfb98 85 header->referenceCount = 1;
1: x/i $pc
=> 0xffffa5dcfb98 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+72>: str w0, [x19], #96
(gdb)
90 _Unwind_RaiseException (&header->exc.unwindHeader);
1: x/i $pc
=> 0xffffa5dcfb9c <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+76>: mov x0, x19
(gdb)
0x0000ffffa5dcfba0 90 _Unwind_RaiseException (&header->exc.unwindHeader);
1: x/i $pc
=> 0xffffa5dcfba0 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+80>: bl 0xffffa5dc9d70 <_Unwind_RaiseException at plt>
(gdb) stepi
0x0000ffffa5dc9d70 in _Unwind_RaiseException at plt () from /lib/aarch64-linux-gnu/libstdc++.so.6
1: x/i $pc
=> 0xffffa5dc9d70 <_Unwind_RaiseException at plt>: adrp x16, 0xffffa5ec5000 <__cxa_allocate_dependent_exception at got.plt>
(gdb)
0x0000ffffa5dc9d74 in _Unwind_RaiseException at plt () from /lib/aarch64-linux-gnu/libstdc++.so.6
1: x/i $pc
=> 0xffffa5dc9d74 <_Unwind_RaiseException at plt+4>: ldr x17, [x16, #2776]
(gdb)
0x0000ffffa5dc9d78 in _Unwind_RaiseException at plt () from /lib/aarch64-linux-gnu/libstdc++.so.6
1: x/i $pc
=> 0xffffa5dc9d78 <_Unwind_RaiseException at plt+8>: add x16, x16, #0xad8
(gdb)
0x0000ffffa5dc9d7c in _Unwind_RaiseException at plt () from /lib/aarch64-linux-gnu/libstdc++.so.6
1: x/i $pc
=> 0xffffa5dc9d7c <_Unwind_RaiseException at plt+12>: br x17
(gdb)
0x0000ffffa5dc87a0 in ?? () from /lib/aarch64-linux-gnu/libstdc++.so.6
1: x/i $pc
=> 0xffffa5dc87a0: stp x16, x30, [sp, #-16]!
(gdb)
0x0000ffffa5dc87a4 in ?? () from /lib/aarch64-linux-gnu/libstdc++.so.6
1: x/i $pc
=> 0xffffa5dc87a4: adrp x16, 0xffffa5ec4000
(gdb)
0x0000ffffa5dc87a8 in ?? () from /lib/aarch64-linux-gnu/libstdc++.so.6
1: x/i $pc
=> 0xffffa5dc87a8: ldr x17, [x16, #4088]
(gdb)
0x0000ffffa5dc87ac in ?? () from /lib/aarch64-linux-gnu/libstdc++.so.6
1: x/i $pc
=> 0xffffa5dc87ac: add x16, x16, #0xff8
(gdb)
0x0000ffffa5dc87b0 in ?? () from /lib/aarch64-linux-gnu/libstdc++.so.6
1: x/i $pc
=> 0xffffa5dc87b0: br x17
(gdb)
_dl_runtime_resolve () at ../sysdeps/aarch64/dl-trampoline.S:48
48 ../sysdeps/aarch64/dl-trampoline.S: No such file or directory.
1: x/i $pc
=> 0xffffa671db04 <_dl_runtime_resolve>: stp x8, x9, [sp, #-208]!
(gdb) nexti
53 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db08 <_dl_runtime_resolve+4>: stp x6, x7, [sp, #16]
(gdb)
57 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db0c <_dl_runtime_resolve+8>: stp x4, x5, [sp, #32]
(gdb)
61 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db10 <_dl_runtime_resolve+12>: stp x2, x3, [sp, #48]
(gdb)
65 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db14 <_dl_runtime_resolve+16>: stp x0, x1, [sp, #64]
(gdb)
69 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db18 <_dl_runtime_resolve+20>: stp q0, q1, [sp, #80]
(gdb)
73 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db1c <_dl_runtime_resolve+24>: stp q2, q3, [sp, #112]
(gdb)
77 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db20 <_dl_runtime_resolve+28>: stp q4, q5, [sp, #144]
(gdb)
81 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db24 <_dl_runtime_resolve+32>: stp q6, q7, [sp, #176]
(gdb)
86 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db28 <_dl_runtime_resolve+36>: ldur x0, [x16, #-8]
(gdb)
89 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db2c <_dl_runtime_resolve+40>: ldr x1, [sp, #208]
(gdb)
91 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db30 <_dl_runtime_resolve+44>: sub x1, x1, x16
(gdb)
92 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db34 <_dl_runtime_resolve+48>: add x1, x1, x1, lsl #1
(gdb)
93 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db38 <_dl_runtime_resolve+52>: lsl x1, x1, #3
(gdb)
94 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db3c <_dl_runtime_resolve+56>: sub x1, x1, #0xc0
(gdb)
95 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db40 <_dl_runtime_resolve+60>: lsr x1, x1, #3
(gdb)
98 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db44 <_dl_runtime_resolve+64>: bl 0xffffa6717fb8 <_dl_fixup>
(gdb)
101 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db48 <_dl_runtime_resolve+68>: mov x16, x0
(gdb)
104 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db4c <_dl_runtime_resolve+72>: ldp q0, q1, [sp, #80]
(gdb)
105 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db50 <_dl_runtime_resolve+76>: ldp q2, q3, [sp, #112]
(gdb)
106 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db54 <_dl_runtime_resolve+80>: ldp q4, q5, [sp, #144]
(gdb)
107 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db58 <_dl_runtime_resolve+84>: ldp q6, q7, [sp, #176]
(gdb)
108 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db5c <_dl_runtime_resolve+88>: ldp x0, x1, [sp, #64]
(gdb)
109 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db60 <_dl_runtime_resolve+92>: ldp x2, x3, [sp, #48]
(gdb)
110 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db64 <_dl_runtime_resolve+96>: ldp x4, x5, [sp, #32]
(gdb)
111 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db68 <_dl_runtime_resolve+100>: ldp x6, x7, [sp, #16]
(gdb)
112 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db6c <_dl_runtime_resolve+104>: ldp x8, x9, [sp], #208
(gdb)
115 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db70 <_dl_runtime_resolve+108>: ldp x17, x30, [sp], #16
(gdb)
119 in ../sysdeps/aarch64/dl-trampoline.S
1: x/i $pc
=> 0xffffa671db74 <_dl_runtime_resolve+112>: br x16
(gdb)
_Unwind_RaiseException (exception_object=exception_object at entry=0xaaaae20279f0) at unwind/RaiseException.c:31
31 unwind/RaiseException.c: No such file or directory.
1: x/i $pc
=> 0xffffa630be30 <_Unwind_RaiseException>: mov x16, #0x92d0 // #37584
(gdb) directory /home/benutzer/source/libunwind8/orig/libunwind-1.2.1/src
Source directories searched: /home/benutzer/source/libunwind8/orig/libunwind-1.2.1/src:/home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0/src/libgo/go/os:/home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0:/home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg:$cdir:$cwd
(gdb) up
#1 0x0000ffffa5dcfba4 in __cxxabiv1::__cxa_throw (obj=obj at entry=0xaaaae2027a10, tinfo=0xaaaaac8f4df8 <typeinfo for rdr::Exception>, dest=0xaaaaac7b57e8 <rdr::Exception::~Exception()>) at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:90
90 _Unwind_RaiseException (&header->exc.unwindHeader);
(gdb) down
#0 _Unwind_RaiseException (exception_object=exception_object at entry=0xaaaae20279f0) at unwind/RaiseException.c:31
31 uint64_t exception_class = exception_object->exception_class;
(gdb) nexti
0x0000ffffa630be34 31 uint64_t exception_class = exception_object->exception_class;
1: x/i $pc
=> 0xffffa630be34 <_Unwind_RaiseException+4>: sub sp, sp, x16
(gdb)
0x0000ffffa630be38 31 uint64_t exception_class = exception_object->exception_class;
1: x/i $pc
=> 0xffffa630be38 <_Unwind_RaiseException+8>: add x1, sp, #0x8, lsl #12
(gdb)
0x0000ffffa630be3c 31 uint64_t exception_class = exception_object->exception_class;
1: x/i $pc
=> 0xffffa630be3c <_Unwind_RaiseException+12>: stp x29, x30, [sp]
(gdb)
0x0000ffffa630be40 31 uint64_t exception_class = exception_object->exception_class;
1: x/i $pc
=> 0xffffa630be40 <_Unwind_RaiseException+16>: mov x29, sp
(gdb)
0x0000ffffa630be44 31 uint64_t exception_class = exception_object->exception_class;
1: x/i $pc
=> 0xffffa630be44 <_Unwind_RaiseException+20>: stp x21, x22, [sp, #32]
(gdb)
0x0000ffffa630be48 31 uint64_t exception_class = exception_object->exception_class;
1: x/i $pc
=> 0xffffa630be48 <_Unwind_RaiseException+24>: mov x22, x0
(gdb)
0x0000ffffa630be4c 31 uint64_t exception_class = exception_object->exception_class;
1: x/i $pc
=> 0xffffa630be4c <_Unwind_RaiseException+28>: add x21, sp, #0xf0
(gdb)
0x0000ffffa630be50 31 uint64_t exception_class = exception_object->exception_class;
1: x/i $pc
=> 0xffffa630be50 <_Unwind_RaiseException+32>: stp x19, x20, [sp, #16]
(gdb)
0x0000ffffa630be54 31 uint64_t exception_class = exception_object->exception_class;
1: x/i $pc
=> 0xffffa630be54 <_Unwind_RaiseException+36>: add x0, x21, #0xb8
(gdb)
0x0000ffffa630be58 31 uint64_t exception_class = exception_object->exception_class;
1: x/i $pc
=> 0xffffa630be58 <_Unwind_RaiseException+40>: stp x23, x24, [sp, #48]
(gdb)
0x0000ffffa630be5c 31 uint64_t exception_class = exception_object->exception_class;
1: x/i $pc
=> 0xffffa630be5c <_Unwind_RaiseException+44>: str wzr, [x1, #4808]
(gdb)
0x0000ffffa630be60 31 uint64_t exception_class = exception_object->exception_class;
1: x/i $pc
=> 0xffffa630be60 <_Unwind_RaiseException+48>: ldr x23, [x22]
(gdb)
42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630be64 <_Unwind_RaiseException+52>: stp x0, x1, [x0]
(gdb)
0x0000ffffa630be68 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630be68 <_Unwind_RaiseException+56>: stp x2, x3, [x0, #16]
(gdb)
0x0000ffffa630be6c 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630be6c <_Unwind_RaiseException+60>: stp x4, x5, [x0, #32]
(gdb)
0x0000ffffa630be70 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630be70 <_Unwind_RaiseException+64>: stp x6, x7, [x0, #48]
(gdb)
0x0000ffffa630be74 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630be74 <_Unwind_RaiseException+68>: stp x8, x9, [x0, #64]
(gdb)
0x0000ffffa630be78 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630be78 <_Unwind_RaiseException+72>: stp x10, x11, [x0, #80]
(gdb)
0x0000ffffa630be7c 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630be7c <_Unwind_RaiseException+76>: stp x12, x13, [x0, #96]
(gdb)
0x0000ffffa630be80 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630be80 <_Unwind_RaiseException+80>: stp x14, x13, [x0, #112]
(gdb)
0x0000ffffa630be84 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630be84 <_Unwind_RaiseException+84>: stp x16, x17, [x0, #128]
(gdb)
0x0000ffffa630be88 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630be88 <_Unwind_RaiseException+88>: stp x18, x19, [x0, #144]
(gdb)
0x0000ffffa630be8c 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630be8c <_Unwind_RaiseException+92>: stp x20, x21, [x0, #160]
(gdb)
0x0000ffffa630be90 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630be90 <_Unwind_RaiseException+96>: stp x22, x23, [x0, #176]
(gdb)
0x0000ffffa630be94 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630be94 <_Unwind_RaiseException+100>: stp x24, x25, [x0, #192]
(gdb)
0x0000ffffa630be98 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630be98 <_Unwind_RaiseException+104>: stp x26, x27, [x0, #208]
(gdb)
0x0000ffffa630be9c 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630be9c <_Unwind_RaiseException+108>: stp x28, x29, [x0, #224]
(gdb)
0x0000ffffa630bea0 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630bea0 <_Unwind_RaiseException+112>: str x30, [x0, #240]
(gdb)
0x0000ffffa630bea4 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630bea4 <_Unwind_RaiseException+116>: mov x1, sp
(gdb)
0x0000ffffa630bea8 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630bea8 <_Unwind_RaiseException+120>: stp x1, x30, [x0, #248]
(gdb)
0x0000ffffa630beac 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630beac <_Unwind_RaiseException+124>: mov x0, #0x12c8 // #4808
(gdb)
0x0000ffffa630beb0 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630beb0 <_Unwind_RaiseException+128>: add x19, sp, x0
(gdb)
0x0000ffffa630beb4 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630beb4 <_Unwind_RaiseException+132>: mov x1, x21
(gdb)
0x0000ffffa630beb8 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630beb8 <_Unwind_RaiseException+136>: mov x0, x19
(gdb)
0x0000ffffa630bebc 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630bebc <_Unwind_RaiseException+140>: bl 0xffffa630c820 <_ULaarch64_init_local>
(gdb)
0x0000ffffa630bec0 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630bec0 <_Unwind_RaiseException+144>: tbnz w0, #31, 0xffffa630befc <_Unwind_RaiseException+204>
(gdb)
0x0000ffffa630bec4 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630bec4 <_Unwind_RaiseException+148>: add x20, sp, #0x70
(gdb)
0x0000ffffa630bec8 42 if (_Unwind_InitContext (&context, &uc) < 0)
1: x/i $pc
=> 0xffffa630bec8 <_Unwind_RaiseException+152>: b 0xffffa630bee4 <_Unwind_RaiseException+180>
(gdb)
49 if ((ret = unw_step (&context.cursor)) <= 0)
1: x/i $pc
=> 0xffffa630bee4 <_Unwind_RaiseException+180>: mov x0, x19
(gdb)
0x0000ffffa630bee8 49 if ((ret = unw_step (&context.cursor)) <= 0)
1: x/i $pc
=> 0xffffa630bee8 <_Unwind_RaiseException+184>: bl 0xffffa630d368 <_ULaarch64_step>
(gdb)
0x0000ffffa630beec 49 if ((ret = unw_step (&context.cursor)) <= 0)
1: x/i $pc
=> 0xffffa630beec <_Unwind_RaiseException+188>: cmp w0, #0x0
(gdb)
0x0000ffffa630bef0 49 if ((ret = unw_step (&context.cursor)) <= 0)
1: x/i $pc
=> 0xffffa630bef0 <_Unwind_RaiseException+192>: b.gt 0xffffa630becc <_Unwind_RaiseException+156>
(gdb)
60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
1: x/i $pc
=> 0xffffa630becc <_Unwind_RaiseException+156>: mov x1, x20
(gdb)
0x0000ffffa630bed0 60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
1: x/i $pc
=> 0xffffa630bed0 <_Unwind_RaiseException+160>: mov x0, x19
(gdb)
0x0000ffffa630bed4 60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
1: x/i $pc
=> 0xffffa630bed4 <_Unwind_RaiseException+164>: bl 0xffffa630c490 <_ULaarch64_get_proc_info>
(gdb)
0x0000ffffa630bed8 60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
1: x/i $pc
=> 0xffffa630bed8 <_Unwind_RaiseException+168>: tbnz w0, #31, 0xffffa630befc <_Unwind_RaiseException+204>
(gdb)
63 personality = (_Unwind_Personality_Fn) (uintptr_t) pi.handler;
1: x/i $pc
=> 0xffffa630bedc <_Unwind_RaiseException+172>: ldr x5, [sp, #136]
(gdb)
64 if (personality)
1: x/i $pc
=> 0xffffa630bee0 <_Unwind_RaiseException+176>: cbnz x5, 0xffffa630bf1c <_Unwind_RaiseException+236>
(gdb) print personality
$1 = (_Unwind_Personality_Fn) 0x0
(gdb) print pi
$2 = {start_ip = 281473464466256, end_ip = 281473464466352, lsda = 0, handler = 0, gp = 281473465470952, flags = 0, format = 0, unwind_info_size = 0, unwind_info = 0x0, extra = {<No data fields>}}
(gdb) print/x pi
$3 = {start_ip = 0xffffa5dcfb50, end_ip = 0xffffa5dcfbb0, lsda = 0x0, handler = 0x0, gp = 0xffffa5ec4fe8, flags = 0x0, format = 0x0, unwind_info_size = 0x0, unwind_info = 0x0, extra = {<No data fields>}}
(gdb) nexti
49 if ((ret = unw_step (&context.cursor)) <= 0)
1: x/i $pc
=> 0xffffa630bee4 <_Unwind_RaiseException+180>: mov x0, x19
(gdb)
0x0000ffffa630bee8 49 if ((ret = unw_step (&context.cursor)) <= 0)
1: x/i $pc
=> 0xffffa630bee8 <_Unwind_RaiseException+184>: bl 0xffffa630d368 <_ULaarch64_step>
(gdb)
0x0000ffffa630beec 49 if ((ret = unw_step (&context.cursor)) <= 0)
1: x/i $pc
=> 0xffffa630beec <_Unwind_RaiseException+188>: cmp w0, #0x0
(gdb)
0x0000ffffa630bef0 49 if ((ret = unw_step (&context.cursor)) <= 0)
1: x/i $pc
=> 0xffffa630bef0 <_Unwind_RaiseException+192>: b.gt 0xffffa630becc <_Unwind_RaiseException+156>
(gdb)
60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
1: x/i $pc
=> 0xffffa630becc <_Unwind_RaiseException+156>: mov x1, x20
(gdb)
0x0000ffffa630bed0 60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
1: x/i $pc
=> 0xffffa630bed0 <_Unwind_RaiseException+160>: mov x0, x19
(gdb)
0x0000ffffa630bed4 60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
1: x/i $pc
=> 0xffffa630bed4 <_Unwind_RaiseException+164>: bl 0xffffa630c490 <_ULaarch64_get_proc_info>
(gdb)
0x0000ffffa630bed8 60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
1: x/i $pc
=> 0xffffa630bed8 <_Unwind_RaiseException+168>: tbnz w0, #31, 0xffffa630befc <_Unwind_RaiseException+204>
(gdb)
57 return _URC_FATAL_PHASE1_ERROR;
1: x/i $pc
=> 0xffffa630befc <_Unwind_RaiseException+204>: mov w0, #0x3 // #3
(gdb) bt
#0 _Unwind_RaiseException (exception_object=exception_object at entry=0xaaaae20279f0) at unwind/RaiseException.c:57
#1 0x0000ffffa5dcfba4 in __cxxabiv1::__cxa_throw (obj=obj at entry=0xaaaae2027a10, tinfo=0xaaaaac8f4df8 <typeinfo for rdr::Exception>, dest=0xaaaaac7b57e8 <rdr::Exception::~Exception()>) at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:90
#2 0x0000aaaaac7ee4d4 in rfb::PlainPasswd::PlainPasswd (this=0xfffffccd1f80, obfPwd=...) at ./common/rfb/Password.cxx:46
#3 0x0000aaaaac7dd144 in rfb::VncAuthPasswdParameter::getVncAuthPasswd (this=<optimized out>, password=0xfffffccd2010, readOnlyPassword=0xfffffccd2018) at ./common/rfb/SSecurityVncAuth.cxx:149
#4 0x0000aaaaac7dd5a8 in rfb::SSecurityVncAuth::processMsg (this=0xaaaae209c270, sc=<optimized out>) at ./common/rfb/SSecurityVncAuth.cxx:93
#5 0x0000aaaaac7d5348 in rfb::SConnection::processSecurityMsg (this=0xaaaae2053f30) at ./common/rfb/SConnection.cxx:213
#6 0x0000aaaaac7e1f64 in rfb::VNCSConnectionST::processMessages (this=0xaaaae2053f30) at ./common/rfb/VNCSConnectionST.cxx:151
#7 0x0000aaaaac7bf178 in XserverDesktop::handleSocketEvent (this=this at entry=0xaaaae1cdcf70, fd=fd at entry=10, sockserv=0xaaaae1cf3920, read=read at entry=true, write=write at entry=false) at ././unix/xserver/hw/vnc/XserverDesktop.cc:428
#8 0x0000aaaaac7bf28c in XserverDesktop::handleSocketEvent (this=0xaaaae1cdcf70, fd=10, read=<optimized out>, write=<optimized out>) at ././unix/xserver/hw/vnc/XserverDesktop.cc:377
#9 0x0000aaaaac85e2d8 in ospoll_wait (ospoll=0xaaaae1cdcb80, timeout=<optimized out>) at ././unix/xserver/os/ospoll.c:651
#10 0x0000aaaaac857090 in WaitForSomething (are_ready=0) at ././unix/xserver/os/WaitFor.c:208
#11 0x0000aaaaac80f774 in Dispatch () at ././unix/xserver/dix/dispatch.c:421
#12 0x0000aaaaac814ae8 in dix_main (argc=20, argv=0xfffffccd3498, envp=0xfffffccd3540) at ././unix/xserver/dix/main.c:276
#13 0x0000ffffa5b0cd24 in __libc_start_main (main=0xaaaaac6e3150 <main>, argc=20, argv=0xfffffccd3498, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=<optimized out>) at ../csu/libc-start.c:308
#14 0x0000aaaaac6e49c0 in _start () at /usr/include/c++/8/bits/stl_tree.h:210
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) stepi
0x0000ffffa630bf00 57 return _URC_FATAL_PHASE1_ERROR;
1: x/i $pc
=> 0xffffa630bf00 <_Unwind_RaiseException+208>: mov x16, #0x92d0 // #37584
(gdb)
0x0000ffffa630bf04 57 return _URC_FATAL_PHASE1_ERROR;
1: x/i $pc
=> 0xffffa630bf04 <_Unwind_RaiseException+212>: ldp x29, x30, [sp]
(gdb)
0x0000ffffa630bf08 57 return _URC_FATAL_PHASE1_ERROR;
1: x/i $pc
=> 0xffffa630bf08 <_Unwind_RaiseException+216>: ldp x19, x20, [sp, #16]
(gdb)
0x0000ffffa630bf0c 57 return _URC_FATAL_PHASE1_ERROR;
1: x/i $pc
=> 0xffffa630bf0c <_Unwind_RaiseException+220>: ldp x21, x22, [sp, #32]
(gdb)
0x0000ffffa630bf10 57 return _URC_FATAL_PHASE1_ERROR;
1: x/i $pc
=> 0xffffa630bf10 <_Unwind_RaiseException+224>: ldp x23, x24, [sp, #48]
(gdb)
0x0000ffffa630bf14 57 return _URC_FATAL_PHASE1_ERROR;
1: x/i $pc
=> 0xffffa630bf14 <_Unwind_RaiseException+228>: add sp, sp, x16
(gdb)
0x0000ffffa630bf18 57 return _URC_FATAL_PHASE1_ERROR;
1: x/i $pc
=> 0xffffa630bf18 <_Unwind_RaiseException+232>: ret
(gdb)
__cxxabiv1::__cxa_throw (obj=obj at entry=0xaaaae2027a10, tinfo=0xaaaaac8f4df8 <typeinfo for rdr::Exception>, dest=0xaaaaac7b57e8 <rdr::Exception::~Exception()>) at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:94
94 __cxa_begin_catch (&header->exc.unwindHeader);
1: x/i $pc
=> 0xffffa5dcfba4 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+84>: mov x0, x19
(gdb) stepi
0x0000ffffa5dcfba8 94 __cxa_begin_catch (&header->exc.unwindHeader);
1: x/i $pc
=> 0xffffa5dcfba8 <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+88>: bl 0xffffa5dc8b10 <__cxa_begin_catch at plt>
(gdb) nexti
95 std::terminate ();
1: x/i $pc
=> 0xffffa5dcfbac <__cxxabiv1::__cxa_throw(void*, std::type_info*, void (*)(void*))+92>: bl 0xffffa5dcbc00 <_ZSt9terminatev at plt>
(gdb) list _ULaarch64_get_proc_info
25 #include "unwind_i.h"
26
27 PROTECTED int
28 unw_get_proc_info (unw_cursor_t *cursor, unw_proc_info_t *pi)
29 {
30 struct cursor *c = (struct cursor *) cursor;
31 int ret;
32
33 ret = dwarf_make_proc_info (&c->dwarf);
34 if (ret < 0)
35 return ret;
36
37 *pi = c->dwarf.pi;
38 return 0;
39 }
(gdb) list RaiseException.c:27,100
27
28 PROTECTED _Unwind_Reason_Code
29 _Unwind_RaiseException (struct _Unwind_Exception *exception_object)
30 {
31 uint64_t exception_class = exception_object->exception_class;
32 _Unwind_Personality_Fn personality;
33 struct _Unwind_Context context;
34 _Unwind_Reason_Code reason;
35 unw_proc_info_t pi;
36 unw_context_t uc;
37 unw_word_t ip;
38 int ret;
39
40 Debug (1, "(exception_object=%p)\n", exception_object);
41
42 if (_Unwind_InitContext (&context, &uc) < 0)
43 return _URC_FATAL_PHASE1_ERROR;
44
45 /* Phase 1 (search phase) */
46
47 while (1)
48 {
49 if ((ret = unw_step (&context.cursor)) <= 0)
50 {
51 if (ret == 0)
52 {
53 Debug (1, "no handler found\n");
54 return _URC_END_OF_STACK;
55 }
56 else
57 return _URC_FATAL_PHASE1_ERROR; <<<<<<<<<<<<<<<<<<<<
58 }
59
60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
61 return _URC_FATAL_PHASE1_ERROR;
62
63 personality = (_Unwind_Personality_Fn) (uintptr_t) pi.handler;
64 if (personality)
65 {
66 reason = (*personality) (_U_VERSION, _UA_SEARCH_PHASE,
67 exception_class, exception_object,
68 &context);
69 if (reason != _URC_CONTINUE_UNWIND)
70 {
71 if (reason == _URC_HANDLER_FOUND)
72 break;
73 else
74 {
75 Debug (1, "personality returned %d\n", reason);
76 return _URC_FATAL_PHASE1_ERROR;
77 }
78 }
79 }
80 }
81
82 /* Exceptions are associated with IP-ranges. If a given exception
83 is handled at a particular IP, it will _always_ be handled at
84 that IP. If this weren't true, we'd have to track the tuple
85 (IP,SP,BSP) to uniquely identify the stack frame that's handling
86 the exception. */
87 if (unw_get_reg (&context.cursor, UNW_REG_IP, &ip) < 0)
88 return _URC_FATAL_PHASE1_ERROR;
89 exception_object->private_1 = 0; /* clear "stop" pointer */
90 exception_object->private_2 = ip; /* save frame marker */
91
92 Debug (1, "found handler for IP=%lx; entering cleanup phase\n", (long) ip);
93
94 /* Reset the cursor to the first frame: */
95 if (unw_init_local (&context.cursor, &uc) < 0)
96 return _URC_FATAL_PHASE1_ERROR;
97
98 return _Unwind_Phase2 (exception_object, &context);
99 }
100
(gdb) list __cxa_throw
73
74 extern "C" void
75 __cxxabiv1::__cxa_throw (void *obj, std::type_info *tinfo,
76 void (_GLIBCXX_CDTOR_CALLABI *dest) (void *))
77 {
78 PROBE2 (throw, obj, tinfo);
79
80 __cxa_eh_globals *globals = __cxa_get_globals ();
81 globals->uncaughtExceptions += 1;
82 // Definitely a primary.
83 __cxa_refcounted_exception *header =
84 __cxa_init_primary_exception(obj, tinfo, dest);
85 header->referenceCount = 1;
86
87 #ifdef __USING_SJLJ_EXCEPTIONS__
88 _Unwind_SjLj_RaiseException (&header->exc.unwindHeader);
89 #else
90 _Unwind_RaiseException (&header->exc.unwindHeader);
91 #endif
92
93 // Some sort of unwinding error. Note that terminate is a handler.
94 __cxa_begin_catch (&header->exc.unwindHeader);
95 std::terminate ();
96 }
97
benutzer at debian:~$ gdb -q --pid $(pidof Xtigervnc)
Attaching to process 19248
[New LWP 19262]
[New LWP 19263]
[New LWP 19264]
[New LWP 19265]
[New LWP 19266]
[New LWP 19267]
[New LWP 19268]
[New LWP 19269]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/aarch64-linux-gnu/libthread_db.so.1".
0x0000ffff9348cad0 in __GI_epoll_pwait (epfd=<optimized out>, events=events at entry=0xffffdac02b48, maxevents=maxevents at entry=256, timeout=<optimized out>, set=set at entry=0x0)
at ../sysdeps/unix/sysv/linux/epoll_pwait.c:42
42 ../sysdeps/unix/sysv/linux/epoll_pwait.c: No such file or directory.
(gdb) set width 0
(gdb) set pagination off
(gdb) directory /home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg
Source directories searched: /home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg:$cdir:$cwd
(gdb) directory /home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0
Source directories searched: /home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0:/home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg:$cdir:$cwd
(gdb) directory /home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0/src/libgo/go/os
Source directories searched: /home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0/src/libgo/go/os:/home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0:/home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg:$cdir:$cwd
(gdb) directory /home/benutzer/source/libunwind8/orig/libunwind-1.2.1/src
Source directories searched: /home/benutzer/source/libunwind8/orig/libunwind-1.2.1/src:/home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0/src/libgo/go/os:/home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0:/home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg:$cdir:$cwd
(gdb) b rfb::VncAuthPasswdParameter::getVncAuthPasswd
Breakpoint 1 at 0xaaaab67a0010: file ./common/rfb/SSecurityVncAuth.cxx, line 117.
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" hit Breakpoint 1, rfb::VncAuthPasswdParameter::getVncAuthPasswd (this=0xaaaab68c8f10 <rfb::SSecurityVncAuth::vncAuthPasswd>, password=0xffffdac029a0, readOnlyPassword=0xffffdac029a8) at ./common/rfb/SSecurityVncAuth.cxx:117
117 void VncAuthPasswdParameter::getVncAuthPasswd(PlainPasswd *password, PlainPasswd *readOnlyPassword) {
(gdb) b rfb::PlainPasswd::PlainPasswd
Breakpoint 2 at 0xaaaab67b1408: rfb::PlainPasswd::PlainPasswd. (4 locations)
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" hit Breakpoint 2, rfb::PlainPasswd::PlainPasswd (this=0xffffdac02908, obfPwd=...) at ./common/rfb/Password.cxx:44
44 PlainPasswd::PlainPasswd(const ObfuscatedPasswd& obfPwd) : CharArray(9) {
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" hit Breakpoint 2, rfb::PlainPasswd::PlainPasswd (this=0xffffdac02910, obfPwd=...) at ./common/rfb/Password.cxx:44
44 PlainPasswd::PlainPasswd(const ObfuscatedPasswd& obfPwd) : CharArray(9) {
(gdb) b __cxxabiv1::__cxa_throw
Breakpoint 3 at 0xffff936a0b50: file ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc, line 78.
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" hit Breakpoint 3, __cxxabiv1::__cxa_throw (obj=obj at entry=0xaaaad3130a10, tinfo=0xaaaab68b7df8 <typeinfo for rdr::Exception>, dest=0xaaaab67787e8 <rdr::Exception::~Exception()>) at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:78
78 PROBE2 (throw, obj, tinfo);
(gdb) b _Unwind_RaiseException
Breakpoint 4 at 0xffff9353bd00: _Unwind_RaiseException. (2 locations)
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" hit Breakpoint 4, _Unwind_RaiseException (exception_object=exception_object at entry=0xaaaad31309f0) at unwind/RaiseException.c:31
31 uint64_t exception_class = exception_object->exception_class;
(gdb) next
42 if (_Unwind_InitContext (&context, &uc) < 0)
(gdb)
49 if ((ret = unw_step (&context.cursor)) <= 0)
(gdb)
60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
(gdb)
63 personality = (_Unwind_Personality_Fn) (uintptr_t) pi.handler;
(gdb)
64 if (personality)
(gdb)
49 if ((ret = unw_step (&context.cursor)) <= 0)
(gdb)
60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
(gdb)
57 return _URC_FATAL_PHASE1_ERROR;
(gdb)
__cxxabiv1::__cxa_throw (obj=obj at entry=0xaaaad3130a10, tinfo=0xaaaab68b7df8 <typeinfo for rdr::Exception>, dest=0xaaaab67787e8 <rdr::Exception::~Exception()>) at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:94
94 __cxa_begin_catch (&header->exc.unwindHeader);
(gdb)
95 std::terminate ();
benutzer at debian:~$ gdb -q --pid $(pidof Xtigervnc)
Attaching to process 19474
[New LWP 19487]
[New LWP 19488]
[New LWP 19489]
[New LWP 19490]
[New LWP 19491]
[New LWP 19492]
[New LWP 19493]
[New LWP 19494]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/aarch64-linux-gnu/libthread_db.so.1".
0x0000ffff9519bad0 in __GI_epoll_pwait (epfd=<optimized out>, events=events at entry=0xffffe2f00f38, maxevents=maxevents at entry=256, timeout=<optimized out>, set=set at entry=0x0)
at ../sysdeps/unix/sysv/linux/epoll_pwait.c:42
42 ../sysdeps/unix/sysv/linux/epoll_pwait.c: No such file or directory.
(gdb) set width 0
(gdb) set pagination off
(gdb) directory /home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg
Source directories searched: /home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg:$cdir:$cwd
(gdb) directory /home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0
Source directories searched: /home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0:/home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg:$cdir:$cwd
(gdb) directory /home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0/src/libgo/go/os
Source directories searched: /home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0/src/libgo/go/os:/home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0:/home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg:$cdir:$cwd
(gdb) directory /home/benutzer/source/libunwind8/orig/libunwind-1.2.1/src
Source directories searched: /home/benutzer/source/libunwind8/orig/libunwind-1.2.1/src:/home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0/src/libgo/go/os:/home/benutzer/source/libstdc++6/orig/gcc-8-8.3.0:/home/benutzer/source/tigervnc-standalone-server/orig/tigervnc-1.9.0+dfsg:$cdir:$cwd
(gdb) b rfb::VncAuthPasswdParameter::getVncAuthPasswd
Breakpoint 1 at 0xaaaae05dd010: file ./common/rfb/SSecurityVncAuth.cxx, line 117.
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" hit Breakpoint 1, rfb::VncAuthPasswdParameter::getVncAuthPasswd (this=0xaaaae0705f10 <rfb::SSecurityVncAuth::vncAuthPasswd>, password=0xffffe2f00d90, readOnlyPassword=0xffffe2f00d98) at ./common/rfb/SSecurityVncAuth.cxx:117
117 void VncAuthPasswdParameter::getVncAuthPasswd(PlainPasswd *password, PlainPasswd *readOnlyPassword) {
(gdb) b rfb::PlainPasswd::PlainPasswd
Breakpoint 2 at 0xaaaae05ee408: rfb::PlainPasswd::PlainPasswd. (4 locations)
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" hit Breakpoint 2, rfb::PlainPasswd::PlainPasswd (this=0xffffe2f00cf8, obfPwd=...) at ./common/rfb/Password.cxx:44
44 PlainPasswd::PlainPasswd(const ObfuscatedPasswd& obfPwd) : CharArray(9) {
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" hit Breakpoint 2, rfb::PlainPasswd::PlainPasswd (this=0xffffe2f00d00, obfPwd=...) at ./common/rfb/Password.cxx:44
44 PlainPasswd::PlainPasswd(const ObfuscatedPasswd& obfPwd) : CharArray(9) {
(gdb) b __cxxabiv1::__cxa_throw
Breakpoint 3 at 0xffff953afb50: file ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc, line 78.
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" hit Breakpoint 3, __cxxabiv1::__cxa_throw (obj=obj at entry=0xaaab147e2980, tinfo=0xaaaae06f4df8 <typeinfo for rdr::Exception>, dest=0xaaaae05b57e8 <rdr::Exception::~Exception()>) at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:78
78 PROBE2 (throw, obj, tinfo);
(gdb) b _Unwind_RaiseException
Breakpoint 4 at 0xffff9524ad00: _Unwind_RaiseException. (2 locations)
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" hit Breakpoint 4, _Unwind_RaiseException (exception_object=exception_object at entry=0xaaab147e2960) at unwind/RaiseException.c:31
31 uint64_t exception_class = exception_object->exception_class;
(gdb) next
42 if (_Unwind_InitContext (&context, &uc) < 0)
(gdb)
49 if ((ret = unw_step (&context.cursor)) <= 0)
(gdb)
60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
(gdb)
63 personality = (_Unwind_Personality_Fn) (uintptr_t) pi.handler;
(gdb)
64 if (personality)
(gdb)
49 if ((ret = unw_step (&context.cursor)) <= 0)
(gdb) display/i $pc
1: x/i $pc
=> 0xffff958ebee4 <_Unwind_RaiseException+180>: mov x0, x19
(gdb) stepi
0x0000ffff958ebee8 49 if ((ret = unw_step (&context.cursor)) <= 0)
1: x/i $pc
=> 0xffff958ebee8 <_Unwind_RaiseException+184>: bl 0xffff958ed368 <_ULaarch64_step>
(gdb)
_ULaarch64_step (cursor=cursor at entry=0xffffe2ef8c38) at aarch64/Gstep.c:111
111 struct cursor *c = (struct cursor *) cursor;
1: x/i $pc
=> 0xffff958ed368 <_ULaarch64_step>: stp x29, x30, [sp, #-32]!
(gdb) finish
Run till exit from #0 _ULaarch64_step (cursor=cursor at entry=0xffffe2ef8c38) at aarch64/Gstep.c:111
0x0000ffff958ebeec in _Unwind_RaiseException (exception_object=exception_object at entry=0xaaab147e2960) at unwind/RaiseException.c:49
49 if ((ret = unw_step (&context.cursor)) <= 0)
1: x/i $pc
=> 0xffff958ebeec <_Unwind_RaiseException+188>: cmp w0, #0x0
Value returned is $1 = 1
(gdb) stepi
0x0000ffff958ebef0 49 if ((ret = unw_step (&context.cursor)) <= 0)
1: x/i $pc
=> 0xffff958ebef0 <_Unwind_RaiseException+192>: b.gt 0xffff958ebecc <_Unwind_RaiseException+156>
(gdb)
60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
1: x/i $pc
=> 0xffff958ebecc <_Unwind_RaiseException+156>: mov x1, x20
(gdb)
0x0000ffff958ebed0 60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
1: x/i $pc
=> 0xffff958ebed0 <_Unwind_RaiseException+160>: mov x0, x19
(gdb)
0x0000ffff958ebed4 60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
1: x/i $pc
=> 0xffff958ebed4 <_Unwind_RaiseException+164>: bl 0xffff958ec490 <_ULaarch64_get_proc_info>
(gdb)
_ULaarch64_get_proc_info (cursor=cursor at entry=0xffffe2ef8c38, pi=pi at entry=0xffffe2ef79e0) at aarch64/Gget_proc_info.c:30
30 struct cursor *c = (struct cursor *) cursor;
1: x/i $pc
=> 0xffff958ec490 <_ULaarch64_get_proc_info>: stp x29, x30, [sp, #-32]!
(gdb) nexti
0x0000ffff958ec494 30 struct cursor *c = (struct cursor *) cursor;
1: x/i $pc
=> 0xffff958ec494 <_ULaarch64_get_proc_info+4>: mov x29, sp
(gdb)
0x0000ffff958ec498 30 struct cursor *c = (struct cursor *) cursor;
1: x/i $pc
=> 0xffff958ec498 <_ULaarch64_get_proc_info+8>: stp x19, x20, [sp, #16]
(gdb)
0x0000ffff958ec49c 30 struct cursor *c = (struct cursor *) cursor;
1: x/i $pc
=> 0xffff958ec49c <_ULaarch64_get_proc_info+12>: mov x20, x1
(gdb)
0x0000ffff958ec4a0 30 struct cursor *c = (struct cursor *) cursor;
1: x/i $pc
=> 0xffff958ec4a0 <_ULaarch64_get_proc_info+16>: mov x19, x0
(gdb)
33 ret = dwarf_make_proc_info (&c->dwarf);
1: x/i $pc
=> 0xffff958ec4a4 <_ULaarch64_get_proc_info+20>: bl 0xffff958efe58 <_ULaarch64_dwarf_make_proc_info>
(gdb)
34 if (ret < 0)
1: x/i $pc
=> 0xffff958ec4a8 <_ULaarch64_get_proc_info+24>: tbnz w0, #31, 0xffff958ec4d4 <_ULaarch64_get_proc_info+68>
(gdb)
38 return 0;
1: x/i $pc
=> 0xffff958ec4d4 <_ULaarch64_get_proc_info+68>: ldp x19, x20, [sp, #16]
(gdb)
0x0000ffff958ec4d8 38 return 0;
1: x/i $pc
=> 0xffff958ec4d8 <_ULaarch64_get_proc_info+72>: ldp x29, x30, [sp], #32
(gdb)
0x0000ffff958ec4dc 38 return 0;
1: x/i $pc
=> 0xffff958ec4dc <_ULaarch64_get_proc_info+76>: ret
(gdb) finish
Run till exit from #0 0x0000ffff958ec4dc in _ULaarch64_get_proc_info (cursor=cursor at entry=0xffffe2ef8c38, pi=pi at entry=0xffffe2ef79e0) at aarch64/Gget_proc_info.c:38
0x0000ffff958ebed8 in _Unwind_RaiseException (exception_object=exception_object at entry=0xaaab147e2960) at unwind/RaiseException.c:60
60 if (unw_get_proc_info (&context.cursor, &pi) < 0)
1: x/i $pc
=> 0xffff958ebed8 <_Unwind_RaiseException+168>: tbnz w0, #31, 0xffff958ebefc <_Unwind_RaiseException+204>
Value returned is $2 = -10
(gdb) info reg
x0 0xfffffff6 4294967286
x1 0x0 0
x2 0x8bf8cca89878d00 630377274373803264
x3 0x8 8
x4 0x0 0
x5 0x17f 383
x6 0x0 0
x7 0x1 1
x8 0x87 135
x9 0xffff8c2ab120 281473033351456
x10 0x7 7
x11 0x1007effff007d 282020437491837
x12 0x0 0
x13 0x1 1
x14 0x0 0
x15 0x68 104
x16 0xffff95905018 281473191006232
x17 0xffff950fe8b8 281473182591160
x18 0x7bf 1983
x19 0xffffe2ef8c38 281474489093176
x20 0xffffe2ef79e0 281474489088480
x21 0xffffe2ef7a60 281474489088608
x22 0xaaab147e2960 187651759941984
x23 0x474e5543432b2b00 5138137972254386944
x24 0xffffe2f00d98 281474489126296
x25 0xffffe2f00d90 281474489126288
x26 0xaaab14856e10 187651760418320
x27 0x1 1
x28 0xaaaae0706770 187650886625136
x29 0xffffe2ef7970 281474489088368
x30 0xffff958ebed8 281473190903512
sp 0xffffe2ef7970 0xffffe2ef7970
pc 0xffff958ebed8 0xffff958ebed8 <_Unwind_RaiseException+168>
cpsr 0x60000000 [ EL=0 C Z ]
fpsr 0x10 16
fpcr 0x0 0
(gdb) bt
#0 0x0000ffff958ebed8 in _Unwind_RaiseException (exception_object=exception_object at entry=0xaaab147e2960) at unwind/RaiseException.c:60
#1 0x0000ffff953afba4 in __cxxabiv1::__cxa_throw (obj=obj at entry=0xaaab147e2980, tinfo=0xaaaae06f4df8 <typeinfo for rdr::Exception>, dest=0xaaaae05b57e8 <rdr::Exception::~Exception()>) at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:90
#2 0x0000aaaae05ee4d4 in rfb::PlainPasswd::PlainPasswd (this=0xffffe2f00d00, obfPwd=...) at ./common/rfb/Password.cxx:46
#3 0x0000aaaae05dd144 in rfb::VncAuthPasswdParameter::getVncAuthPasswd (this=<optimized out>, password=0xffffe2f00d90, readOnlyPassword=0xffffe2f00d98) at ./common/rfb/SSecurityVncAuth.cxx:149
#4 0x0000aaaae05dd5a8 in rfb::SSecurityVncAuth::processMsg (this=0xaaab148571e0, sc=<optimized out>) at ./common/rfb/SSecurityVncAuth.cxx:93
#5 0x0000aaaae05d5348 in rfb::SConnection::processSecurityMsg (this=0xaaab1480eea0) at ./common/rfb/SConnection.cxx:213
#6 0x0000aaaae05e1f64 in rfb::VNCSConnectionST::processMessages (this=0xaaab1480eea0) at ./common/rfb/VNCSConnectionST.cxx:151
#7 0x0000aaaae05bf178 in XserverDesktop::handleSocketEvent (this=this at entry=0xaaab14497f70, fd=fd at entry=10, sockserv=0xaaab144ae920, read=read at entry=true, write=write at entry=false) at ././unix/xserver/hw/vnc/XserverDesktop.cc:428
#8 0x0000aaaae05bf28c in XserverDesktop::handleSocketEvent (this=0xaaab14497f70, fd=10, read=<optimized out>, write=<optimized out>) at ././unix/xserver/hw/vnc/XserverDesktop.cc:377
#9 0x0000aaaae065e2d8 in ospoll_wait (ospoll=0xaaab14497b80, timeout=<optimized out>) at ././unix/xserver/os/ospoll.c:651
#10 0x0000aaaae0657090 in WaitForSomething (are_ready=0) at ././unix/xserver/os/WaitFor.c:208
#11 0x0000aaaae060f774 in Dispatch () at ././unix/xserver/dix/dispatch.c:421
#12 0x0000aaaae0614ae8 in dix_main (argc=20, argv=0xffffe2f02218, envp=0xffffe2f022c0) at ././unix/xserver/dix/main.c:276
#13 0x0000ffff950ecd24 in __libc_start_main (main=0xaaaae04e3150 <main>, argc=20, argv=0xffffe2f02218, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=<optimized out>) at ../csu/libc-start.c:308
#14 0x0000aaaae04e49c0 in _start () at /usr/include/c++/8/bits/stl_tree.h:210
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" hit Breakpoint 4, _Unwind_RaiseException (exception_object=0xaaab147e2960) at unwind/RaiseException.c:31
31 uint64_t exception_class = exception_object->exception_class;
1: x/i $pc
=> 0xffff958ebe30 <_Unwind_RaiseException>: mov x16, #0x92d0 // #37584
(gdb) bt
#0 _Unwind_RaiseException (exception_object=0xaaab147e2960) at unwind/RaiseException.c:31
#1 0x0000ffff958ec430 in _Unwind_Resume_or_Rethrow (exception_object=exception_object at entry=0xaaab147e2960) at unwind/Resume_or_Rethrow.c:42
#2 0x0000ffff953afc04 in __cxxabiv1::__cxa_rethrow () at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:126
#3 0x0000ffff953b1a60 in __gnu_cxx::__verbose_terminate_handler () at ../../../../src/libstdc++-v3/libsupc++/vterminate.cc:80
#4 0x0000ffff953af8ac in __cxxabiv1::__terminate (handler=<optimized out>) at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:47
#5 0x0000ffff953af8f8 in std::terminate () at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:57
#6 0x0000ffff953afbb0 in __cxxabiv1::__cxa_throw (obj=obj at entry=0xaaab147e2980, tinfo=0xaaaae06f4df8 <typeinfo for rdr::Exception>, dest=0xaaaae05b57e8 <rdr::Exception::~Exception()>) at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:95
#7 0x0000aaaae05ee4d4 in rfb::PlainPasswd::PlainPasswd (this=0xffffe2f00d00, obfPwd=...) at ./common/rfb/Password.cxx:46
#8 0x0000aaaae05dd144 in rfb::VncAuthPasswdParameter::getVncAuthPasswd (this=<optimized out>, password=0xffffe2f00d90, readOnlyPassword=0xffffe2f00d98) at ./common/rfb/SSecurityVncAuth.cxx:149
#9 0x0000aaaae05dd5a8 in rfb::SSecurityVncAuth::processMsg (this=0xaaab148571e0, sc=<optimized out>) at ./common/rfb/SSecurityVncAuth.cxx:93
#10 0x0000aaaae05d5348 in rfb::SConnection::processSecurityMsg (this=0xaaab1480eea0) at ./common/rfb/SConnection.cxx:213
#11 0x0000aaaae05e1f64 in rfb::VNCSConnectionST::processMessages (this=0xaaab1480eea0) at ./common/rfb/VNCSConnectionST.cxx:151
#12 0x0000aaaae05bf178 in XserverDesktop::handleSocketEvent (this=this at entry=0xaaab14497f70, fd=fd at entry=10, sockserv=0xaaab144ae920, read=read at entry=true, write=write at entry=false) at ././unix/xserver/hw/vnc/XserverDesktop.cc:428
#13 0x0000aaaae05bf28c in XserverDesktop::handleSocketEvent (this=0xaaab14497f70, fd=10, read=<optimized out>, write=<optimized out>) at ././unix/xserver/hw/vnc/XserverDesktop.cc:377
#14 0x0000aaaae065e2d8 in ospoll_wait (ospoll=0xaaab14497b80, timeout=<optimized out>) at ././unix/xserver/os/ospoll.c:651
#15 0x0000aaaae0657090 in WaitForSomething (are_ready=0) at ././unix/xserver/os/WaitFor.c:208
#16 0x0000aaaae060f774 in Dispatch () at ././unix/xserver/dix/dispatch.c:421
#17 0x0000aaaae0614ae8 in dix_main (argc=20, argv=0xffffe2f02218, envp=0xffffe2f022c0) at ././unix/xserver/dix/main.c:276
#18 0x0000ffff950ecd24 in __libc_start_main (main=0xaaaae04e3150 <main>, argc=20, argv=0xffffe2f02218, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=<optimized out>) at ../csu/libc-start.c:308
#19 0x0000aaaae04e49c0 in _start () at /usr/include/c++/8/bits/stl_tree.h:210
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" received signal SIGABRT, Aborted.
__GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
50 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
1: x/i $pc
=> 0xffff950fe6c4 <__GI_raise+172>: ldr x19, [x19, #3800]
(gdb) bt
#0 __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x0000ffff950ec8e8 in __GI_abort () at abort.c:79
#2 0x0000ffff953b1ac4 in __gnu_cxx::__verbose_terminate_handler () at ../../../../src/libstdc++-v3/libsupc++/vterminate.cc:50
#3 0x0000ffff953af8ac in __cxxabiv1::__terminate (handler=<optimized out>) at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:47
#4 0x0000ffff953af8f8 in std::terminate () at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:57
#5 0x0000ffff953afc10 in __cxxabiv1::__cxa_rethrow () at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:133
#6 0x0000ffff953b1a60 in __gnu_cxx::__verbose_terminate_handler () at ../../../../src/libstdc++-v3/libsupc++/vterminate.cc:80
#7 0x0000ffff953af8ac in __cxxabiv1::__terminate (handler=<optimized out>) at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:47
#8 0x0000ffff953af8f8 in std::terminate () at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:57
#9 0x0000ffff953afbb0 in __cxxabiv1::__cxa_throw (obj=obj at entry=0xaaab147e2980, tinfo=0xaaaae06f4df8 <typeinfo for rdr::Exception>, dest=0xaaaae05b57e8 <rdr::Exception::~Exception()>) at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:95
#10 0x0000aaaae05ee4d4 in rfb::PlainPasswd::PlainPasswd (this=0xffffe2f00d00, obfPwd=...) at ./common/rfb/Password.cxx:46
#11 0x0000aaaae05dd144 in rfb::VncAuthPasswdParameter::getVncAuthPasswd (this=<optimized out>, password=0xffffe2f00d90, readOnlyPassword=0xffffe2f00d98) at ./common/rfb/SSecurityVncAuth.cxx:149
#12 0x0000aaaae05dd5a8 in rfb::SSecurityVncAuth::processMsg (this=0xaaab148571e0, sc=<optimized out>) at ./common/rfb/SSecurityVncAuth.cxx:93
#13 0x0000aaaae05d5348 in rfb::SConnection::processSecurityMsg (this=0xaaab1480eea0) at ./common/rfb/SConnection.cxx:213
#14 0x0000aaaae05e1f64 in rfb::VNCSConnectionST::processMessages (this=0xaaab1480eea0) at ./common/rfb/VNCSConnectionST.cxx:151
#15 0x0000aaaae05bf178 in XserverDesktop::handleSocketEvent (this=this at entry=0xaaab14497f70, fd=fd at entry=10, sockserv=0xaaab144ae920, read=read at entry=true, write=write at entry=false) at ././unix/xserver/hw/vnc/XserverDesktop.cc:428
#16 0x0000aaaae05bf28c in XserverDesktop::handleSocketEvent (this=0xaaab14497f70, fd=10, read=<optimized out>, write=<optimized out>) at ././unix/xserver/hw/vnc/XserverDesktop.cc:377
#17 0x0000aaaae065e2d8 in ospoll_wait (ospoll=0xaaab14497b80, timeout=<optimized out>) at ././unix/xserver/os/ospoll.c:651
#18 0x0000aaaae0657090 in WaitForSomething (are_ready=0) at ././unix/xserver/os/WaitFor.c:208
#19 0x0000aaaae060f774 in Dispatch () at ././unix/xserver/dix/dispatch.c:421
#20 0x0000aaaae0614ae8 in dix_main (argc=20, argv=0xffffe2f02218, envp=0xffffe2f022c0) at ././unix/xserver/dix/main.c:276
#21 0x0000ffff950ecd24 in __libc_start_main (main=0xaaaae04e3150 <main>, argc=20, argv=0xffffe2f02218, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=<optimized out>) at ../csu/libc-start.c:308
#22 0x0000aaaae04e49c0 in _start () at /usr/include/c++/8/bits/stl_tree.h:210
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) cont
Continuing.
Thread 1 "Xtigervnc" received signal SIGABRT, Aborted.
__GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
50 in ../sysdeps/unix/sysv/linux/raise.c
1: x/i $pc
=> 0xffff950fe6c4 <__GI_raise+172>: ldr x19, [x19, #3800]
(gdb) bt
#0 __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x0000ffff950ec8e8 in __GI_abort () at abort.c:79
#2 0x0000aaaae06604dc in OsAbort () at ././unix/xserver/os/utils.c:1350
#3 0x0000aaaae0665c24 in AbortServer () at ././unix/xserver/os/log.c:879
#4 0x0000aaaae0666984 in FatalError (f=f at entry=0xaaaae0685890 "Caught signal %d (%s). Server aborting\n") at ././unix/xserver/os/log.c:1017
#5 0x0000aaaae065d8b4 in OsSigHandler (unused=<optimized out>, sip=0xffffe2eff670, signo=6) at ././unix/xserver/os/osinit.c:156
#6 OsSigHandler (signo=6, sip=0xffffe2eff670, unused=<optimized out>) at ././unix/xserver/os/osinit.c:110
#7 <signal handler called>
#8 __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#9 0x0000ffff950ec8e8 in __GI_abort () at abort.c:79
#10 0x0000ffff953b1ac4 in __gnu_cxx::__verbose_terminate_handler () at ../../../../src/libstdc++-v3/libsupc++/vterminate.cc:50
#11 0x0000ffff953af8ac in __cxxabiv1::__terminate (handler=<optimized out>) at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:47
#12 0x0000ffff953af8f8 in std::terminate () at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:57
#13 0x0000ffff953afc10 in __cxxabiv1::__cxa_rethrow () at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:133
#14 0x0000ffff953b1a60 in __gnu_cxx::__verbose_terminate_handler () at ../../../../src/libstdc++-v3/libsupc++/vterminate.cc:80
#15 0x0000ffff953af8ac in __cxxabiv1::__terminate (handler=<optimized out>) at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:47
#16 0x0000ffff953af8f8 in std::terminate () at ../../../../src/libstdc++-v3/libsupc++/eh_terminate.cc:57
#17 0x0000ffff953afbb0 in __cxxabiv1::__cxa_throw (obj=obj at entry=0xaaab147e2980, tinfo=0xaaaae06f4df8 <typeinfo for rdr::Exception>, dest=0xaaaae05b57e8 <rdr::Exception::~Exception()>) at ../../../../src/libstdc++-v3/libsupc++/eh_throw.cc:95
#18 0x0000aaaae05ee4d4 in rfb::PlainPasswd::PlainPasswd (this=0xffffe2f00d00, obfPwd=...) at ./common/rfb/Password.cxx:46
#19 0x0000aaaae05dd144 in rfb::VncAuthPasswdParameter::getVncAuthPasswd (this=<optimized out>, password=0xffffe2f00d90, readOnlyPassword=0xffffe2f00d98) at ./common/rfb/SSecurityVncAuth.cxx:149
#20 0x0000aaaae05dd5a8 in rfb::SSecurityVncAuth::processMsg (this=0xaaab148571e0, sc=<optimized out>) at ./common/rfb/SSecurityVncAuth.cxx:93
#21 0x0000aaaae05d5348 in rfb::SConnection::processSecurityMsg (this=0xaaab1480eea0) at ./common/rfb/SConnection.cxx:213
#22 0x0000aaaae05e1f64 in rfb::VNCSConnectionST::processMessages (this=0xaaab1480eea0) at ./common/rfb/VNCSConnectionST.cxx:151
#23 0x0000aaaae05bf178 in XserverDesktop::handleSocketEvent (this=this at entry=0xaaab14497f70, fd=fd at entry=10, sockserv=0xaaab144ae920, read=read at entry=true, write=write at entry=false) at ././unix/xserver/hw/vnc/XserverDesktop.cc:428
#24 0x0000aaaae05bf28c in XserverDesktop::handleSocketEvent (this=0xaaab14497f70, fd=10, read=<optimized out>, write=<optimized out>) at ././unix/xserver/hw/vnc/XserverDesktop.cc:377
#25 0x0000aaaae065e2d8 in ospoll_wait (ospoll=0xaaab14497b80, timeout=<optimized out>) at ././unix/xserver/os/ospoll.c:651
#26 0x0000aaaae0657090 in WaitForSomething (are_ready=0) at ././unix/xserver/os/WaitFor.c:208
#27 0x0000aaaae060f774 in Dispatch () at ././unix/xserver/dix/dispatch.c:421
#28 0x0000aaaae0614ae8 in dix_main (argc=20, argv=0xffffe2f02218, envp=0xffffe2f022c0) at ././unix/xserver/dix/main.c:276
#29 0x0000ffff950ecd24 in __libc_start_main (main=0xaaaae04e3150 <main>, argc=20, argv=0xffffe2f02218, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=<optimized out>) at ../csu/libc-start.c:308
#30 0x0000aaaae04e49c0 in _start () at /usr/include/c++/8/bits/stl_tree.h:210
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) cont
Continuing.
Unable to fetch general registers.: No such process.
Unable to fetch general registers.: No such process.
(gdb) [Thread 0xffff8cacdc70 (LWP 19494) exited]
[Thread 0xffff8d2cec70 (LWP 19493) exited]
[Thread 0xffff8dacfc70 (LWP 19492) exited]
[Thread 0xffff8e2d0c70 (LWP 19491) exited]
[Thread 0xffff8ead1c70 (LWP 19490) exited]
[Thread 0xffff87ffec70 (LWP 19489) exited]
[Thread 0xffff8f2d2c70 (LWP 19488) exited]
[Thread 0xffff94841010 (LWP 19474) exited]
https://www.nongnu.org/libunwind/
https://github.com/libunwind/libunwind
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