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Re: [Flightgear-devel] Segmentation fault acquiring SGPropertyLock
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From: Florent R. <f.r...@fr...> - 2023-07-17 19:54:49
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Hi,
TheFGFSEagle <the...@gm...> wrote:
> Got the following stack trace with up-to-date git next:
I got something similar while attempting (on next) to test my changes
concerning the loading of airport XML extension files. The command was
essentially
fgfs --airport=LIPX --aircraft=ufo --disable-real-weather-fetch --disable-terrasync --disable-ai-traffic --developer=true --log-level=info --runway=04 --enable-freeze
The crash is reproducible and triggered by the first assert() below
(simgear/simgear/props/props.cxx:414):
void acquire() override
{
assert(m_node);
assert(!m_own);
acquire_internal(*m_node, false /*shared*/);
m_own = true;
}
Here is a backtrace:
fgfs: .../simgear/simgear/props/props.cxx:414: virtual void SGPropertyLockExclusive::acquire(): Assertion `m_node' failed.
Thread 1 "fgfs" received signal SIGABRT, Aborted.
__pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6,
no_tid=no_tid@entry=0) at ./nptl/pthread_kill.c:44
44 ./nptl/pthread_kill.c: No such file or directory.
(gdb) bt
#0 __pthread_kill_implementation
(threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0)
at ./nptl/pthread_kill.c:44
#1 0x00007ffff2aa815f in __pthread_kill_internal
(signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:78
#2 0x00007ffff2a5a472 in __GI_raise (sig=sig@entry=6)
at ../sysdeps/posix/raise.c:26
#3 0x00007ffff2a444b2 in __GI_abort () at ./stdlib/abort.c:79
#4 0x00007ffff2a443d5 in __assert_fail_base
(fmt=0x7ffff2bb8dc8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x555556b0bbb8 "m_node", file=file@entry=0x555556b0ba00 ".../simgear/simgear/props/props.cxx", line=line@entry=414, function=function@entry=0x555556b0bb88 "virtual void SGPropertyLockExclusive::acquire()") at ./assert/assert.c:92
#5 0x00007ffff2a533a2 in __assert_fail
(assertion=0x555556b0bbb8 "m_node", file=0x555556b0ba00 ".../simgear/simgear/props/props.cxx", line=414, function=0x555556b0bb88 "virtual void SGPropertyLockExclusive::acquire()") at ./assert/assert.c:101
#6 0x0000555556431159 in SGPropertyLockExclusive::acquire()
(this=0x7fffffffb880)
at .../simgear/simgear/props/props.cxx:414
#7 0x0000555556431114 in SGPropertyLockExclusive::assign(SGPropertyNode const&) (this=0x7fffffffb880, node=...)
at .../simgear/simgear/props/props.cxx:409
#8 0x00005555564310ad in SGPropertyLockExclusive::SGPropertyLockExclusive(SGPropertyNode const&) (this=0x7fffffffb880, node=...)
at .../simgear/simgear/props/props.cxx:402
#9 0x000055555642e306 in SGPropertyNode::fireValueChanged() (this=0x0)
at .../simgear/simgear/props/props.cxx:3805
#10 0x00005555560c9082 in FGProperties::setFreeze(bool)
(this=0x55555a19c0f0, f=true)
at .../flightgear/src/Main/fg_props.cxx:234
#11 0x00005555560cd7d6 in SGRawValueMethods<FGProperties, bool>::setValue(bool)
(this=0x55555917ed80, value=true)
at .../install-git.debug/include/simgear/props/props.hxx:615
#12 0x0000555556431893 in SGPropertyNodeImpl::set_bool(SGPropertyLockExclusive&, SGPropertyNode&, bool) (exclusive=..., node=..., val=true)
at .../simgear/simgear/props/props.cxx:1006
#13 0x0000555556433c57 in SGPropertyNodeImpl::setBoolValue(SGPropertyLockExclusive&, SGPropertyNode&, bool) (exclusive=..., node=..., value=true)
at .../simgear/simgear/props/props.cxx:1601
#14 0x000055555642f7a9 in SGPropertyNode::setValue<bool>(SGPropertyLockExclusive&, bool const&, std::enable_if<simgear::props::PropertyTraits<bool>::Internal, void>::type*)
(this=0x555558874990, exclusive=..., val=@0x7fffffffb9ff: true, dummy=0x0)
at .../simgear/simgear/props/props.cxx:4297
#15 0x0000555556436196 in SGPropertyNode::tie<bool>(SGRawValue<bool> const&, bool) (this=0x555558874990, rawValue=..., useDefault=true)
at .../simgear/simgear/props/props.cxx:4217
#16 0x000055555585efb4 in simgear::TiedPropertyList::Tie<bool>(SGSharedPtr<SGPropertyNode>, SGRawValue<bool> const&, bool)
(this=0x55555a19c1e0, node=..., rawValue=..., useDefault=true)
at .../install-git.debug/include/simgear/props/tiedpropertylist.hxx:52
#17 0x00005555560ccd51 in simgear::TiedPropertyList::Tie<FGProperties, bool>(char const*, FGProperties*, bool (FGProperties::*)() const, void (FGProperties::*)(bool), bool)
(this=0x55555a19c1e0, relative_path=0x555556acce60 "/sim/freeze/master", obj=0x55555a19c0f0, getter=(bool (FGProperties::*)(const class FGProperties * const)) 0x5555560c9008 <FGProperties::getFreeze() const>, setter=(void (FGProperties::*)(class FGProperties * const, bool)) 0x5555560c901e <FGProperties::setFreeze(bool)>, useDefault=true)
at .../install-git.debug/include/simgear/props/tiedpropertylist.hxx:106
#18 0x00005555560c9fcf in FGProperties::bind() (this=0x55555a19c0f0)
at .../flightgear/src/Main/fg_props.cxx:421
#19 0x0000555556485eac in operator()(SGSubsystem*) const
(__closure=0x7fffffffc0e0, s=0x55555a19c0f0)
at .../simgear/simgear/structure/subsystem_mgr.cxx:387
#20 0x000055555649029a in std::__invoke_impl<void, SGSubsystemGroup::bind()::<lambda(SGSubsystem*)>&, SGSubsystem*>(std::__invoke_other, struct {...} &)
(__f=...) at /usr/include/c++/12/bits/invoke.h:61
#21 0x000055555648ee31 in std::__invoke_r<void, SGSubsystemGroup::bind()::<lambda(SGSubsystem*)>&, SGSubsystem*>(struct {...} &) (__fn=...)
at /usr/include/c++/12/bits/invoke.h:111
#22 0x000055555648dbec in std::_Function_handler<void(SGSubsystem*), SGSubsystemGroup::bind()::<lambda(SGSubsystem*)> >::_M_invoke(const std::_Any_data &, SGSubsystem *&&) (__functor=..., __args#0=@0x7fffffffc060: 0x55555a19c0f0)
at /usr/include/c++/12/bits/std_function.h:290
#23 0x00005555564917d7 in std::function<void (SGSubsystem*)>::operator()(SGSubsystem*) const (this=0x7fffffffc0e0, __args#0=0x55555a19c0f0)
at /usr/include/c++/12/bits/std_function.h:591
#24 0x0000555556485989 in SGSubsystemGroup::forEach(std::function<void (SGSubsystem*)>) (this=0x555558806030, f=...)
at .../simgear/simgear/structure/subsystem_mgr.cxx:331
#25 0x0000555556486087 in SGSubsystemGroup::bind() (this=0x555558806030)
at .../simgear/simgear/structure/subsystem_mgr.cxx:384
#26 0x0000555556489f59 in SGSubsystemMgr::bind() (this=0x555558805d80)
at .../simgear/simgear/structure/subsystem_mgr.cxx:1020
#27 0x00005555560de65e in fgIdleFunction() ()
at .../flightgear/src/Main/main.cxx:394
#28 0x000055555603c74e in fgOSMainLoop() ()
at .../flightgear/src/Viewer/fg_os_osgviewer.cxx:464
#29 0x00005555560e0987 in fgMainInit(int, char**)
(argc=18, argv=0x7fffffffd9e8)
at .../flightgear/src/Main/main.cxx:780
#30 0x0000555556114671 in main(int, char**) (argc=18, argv=0x7fffffffd9e8)
at .../flightgear/src/Main/bootstrap.cxx:371
Regards
--
Florent
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