[vbox-dev] How to use GNU debugger on VBoxSVC ?

[Frank Mehnert]

Which code is that, 5.0 Beta 2 or some revision from the subversion
repository?

Frank

On Monday 11 May 2015 15:47:05 Alexey Eromenko wrote:
> Compiled non-hardened build. Still doesn't work.
> 
> *1. Debug build doesn't run without GDB.*
> 
> $ cd ./out/linux.amd64/debug/bin/
> $ ./VirtualBox
> LOG_GROUP_MM='MM_HEAP' expects 'MM'
> Trace/breakpoint trap
> 
> $ ./VBoxSVC
> LOG_GROUP_MM='MM_HEAP' expects 'MM'
> Trace/breakpoint trap
> 
> *2. VBOX_ASSERT=none doesn't help*
> 
> $ export VBOX_ASSERT=none
> $ ./VBoxSVC
> LOG_GROUP_MM='MM_HEAP' expects 'MM'
> Trace/breakpoint trap
> $
> 
> $ gdb ./VBoxSVC
> Reading symbols from
> /home/user/VirtualBox-5.0.0_BETA2/out/linux.amd64/debug/bin/VBoxSVC...done.
> (gdb) run
> Starting program:
> /home/user/VirtualBox-5.0.0_BETA2/out/linux.amd64/debug/bin/VBoxSVC
> [Thread debugging using libthread_db enabled]
> Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
> [New Thread 0x7ffff25e8700 (LWP 31556)]
> [Thread 0x7ffff25e8700 (LWP 31556) exited]
> LOG_GROUP_MM='MM_HEAP' expects 'MM'
> 
> Program received signal SIGTRAP, Trace/breakpoint trap.
> 0x00007ffff75876ff in RTLogDefaultInit ()
>     at
> /home/user/VirtualBox-5.0.0_BETA2/src/VBox/Runtime/VBox/log-vbox.cpp:261
> 261         ASSERT_LOG_GROUP(MM);
> (gdb)
> 
> ...so I must press "c" about 30 times to silence it.
> 
> *3. Debug build doesn't run with GDB. (after pressing "c" 30 times)*
> 
> (gdb) c
> Continuing.
> LOG_GROUP_VRDP='VSCSI' expects 'VRDP'
> 
> Program received signal SIGTRAP, Trace/breakpoint trap.
> 0x00007ffff7587f5a in RTLogDefaultInit ()
>     at
> /home/user/VirtualBox-5.0.0_BETA2/src/VBox/Runtime/VBox/log-vbox.cpp:292
> 292         ASSERT_LOG_GROUP(VRDP);
> (gdb) c
> Continuing.
> Type Manifest File: /home/user/.config/VirtualBox/xpti.dat
> c###!!! ASSERTION: Factory creation failed: 'NS_SUCCEEDED(rv)', file
> /home/user/VirtualBox-5.0.0_BETA2/src/libs/xpcom18a4/xpcom/components/nsNati
> veComponentLoader.cpp, line 160
> Break: at file
> /home/user/VirtualBox-5.0.0_BETA2/src/libs/xpcom18a4/xpcom/components/nsNati
> veComponentLoader.cpp, line 160
> nsNativeComponentLoader: autoregistering begins.
> *** Registering VirtualBox_Client_Module components (all right -- a generic
> module!)
> *** Registering VirtualBox_Server_Module components (all right -- a generic
> module!)
> nsNativeComponentLoader: autoregistering succeeded
> nNCL: registering deferred (0)
> nsNativeComponentLoader: autoregistering begins.
> nsNativeComponentLoader: autoregistering succeeded
> nNCL: registering deferred (0)
> [New Thread 0x7ffff0071700 (LWP 31525)]
> ###!!! ASSERTION: Factory creation failed: 'NS_SUCCEEDED(rv)', file
> /home/user/VirtualBox-5.0.0_BETA2/src/libs/xpcom18a4/xpcom/components/nsNati
> veComponentLoader.cpp, line 160
> Break: at file
> /home/user/VirtualBox-5.0.0_BETA2/src/libs/xpcom18a4/xpcom/components/nsNati
> veComponentLoader.cpp, line 160
> VBoxSVC: error: Failed to get IPC service!
> (rc=NS_ERROR_FACTORY_NOT_REGISTERED)
> [Thread 0x7ffff0071700 (LWP 31525) exited]
> XPCOM server has shutdown.

-- 
Dr.-Ing. Frank Mehnert | Software Development Director, VirtualBox
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