application crash on exit(0)
From: Anis (anismo_at_yahoo.com)
Date: 05/30/04
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Date: Sun, 30 May 2004 16:07:35 GMT
Hello,
I am getting an application crash when exit(0) is called after forking to
make
a daemon process.
The program uses standard method for daemonizing and uses a bunch of shared
libraries.
// Dissociate from the terminal
if( ( pid = fork() ) != 0 )
{
// Parent Process
if( -1 == pid )
{
// Serious problem , lets bail out
raise(SIGTRAP);
}
// Terminate Parent
exit( 0 );
}
// Become Session Leader
// The child is still the process the group leader.
setsid();
// Fork again so that the child is not the process group leader.
if( ( pid = fork() ) != 0 )
{
if( -1 == pid )
{
raise(SIGTRAP);
// Terminate Parent
exit( 0 );
}
But when, the parent process calls exit( 0 ), I have occasional (not always)
crashes dumping core. The code is running
on ppc/linux (Linux version 2.4.18-rc4 / gcc version 3.2.3 20030401 )
#0 0x0f8c387c in __FRAME_END__ () from /home/bt42/export/ppc/lib/libsv.so
#1 0x0f8b0004 in __static_initialization_and_destruction_0(int, int)
(__initialize_p=1207960804, __priority=263335744)
at /home/bt42/export/ppc/fips/include/evenmgt.H:594
#2 0x0f8b0178 in _GLOBAL__D_g_svCompBufferSize () at
/home/bt42/export/ppc/include/evenmgt.H:594
#3 0x0f875200 in __do_global_dtors_aux () from
/home/bt42/export/ppc/lib/libsv.so
#4 0x0f8b08c0 in _fini () from /home/bt42/export/ppc/lib/libsv.so
#5 0x3000bc00 in _dl_fini () at dl-fini.c:169
#6 0x0fb22c78 in exit (status=0) at exit.c:58
#7 0x10004c44 in survDaemonize () at /home/bt42/surv/clienthandler.C:508
#8 0x1000475c in main () at /home/bt42/surv/clienthandler.C:208
I googled for similar problem and I did notice that was due to the runtime
linker sometimes running the _fini sections of dynamic libraries in the
wrong order at exit.
Can someone please help me debug this problem or if this is a known problem,
can I get a confirmation of that? I highly appreciate any
help on this issue..
If any other information is required, I will be more than happy to provide.
Thanks in advance and REgards
Anis
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