topic Re: core in libcma.2 in Operating System - HP-UX

core in libcma.2

Dilip Kumar_4 — Tue, 31 May 2005 08:47:07 GMT

Hello,

While stress testing our application (which has been stable over the years) on HP-UX 11.0 with newer DCE patches, it consistently generates a core. The backtrace using gdb shows:

#0 0xc092e6d0 in cma__dispatch+0x450 () from /usr/lib/libcma.2
#1 0xc092e1dc in cma__block+0x164 () from /usr/lib/libcma.2
#2 0xc0944078 in ptdexc_cond_wait+0x1c0 () from /usr/lib/libcma.2
#3 0xc05feee4 in cthread_call_executor+0xd4 () from /usr/lib/libdce.2
#4 0xc094be18 in cma__thread_base+0x1f0 () from /usr/lib/libcma.2
#5 0xc09507a0 in cma__thread_start1+0x38 () from /usr/lib/libcma.2
#6 0xc09501ac in cma__thread_start0+0xc () from /usr/lib/libcma.2

We observed this behavior after we installed the newer DCE patches:

PHSS_29749 1.0 HP DCE/9000 1.7 Runtime cumulative patch
PHSS_29750 1.0 HP DCE/9000 1.7 Server/DevTools cum. patch
PHSS_29751 1.0 HP DCE/9000 1.7 Domestic cumulative patch.

Before the application cores, any RPC calls to the application returns with error-code
382312502 connection closed (dce/rpc).

Any thoughts, suggestions on this.

Thanks,
Dilip

Re: core in libcma.2

Steven E. Protter — Tue, 31 May 2005 08:49:40 GMT

Suggestions:
1) Report the problem to HP Response Center
2) Back out the patches.
3) Put the patches on a test server and see if you can stablize your application, because its always good to have current patches.

SEP

Re: core in libcma.2

Kent Ostby — Tue, 31 May 2005 10:54:41 GMT

Dilip --

Was libc linked on the command line when the application was built ?

If so this can occassionally cause problems .

Also, what does "chatr" show for this executeable.

If it doesn't show libc.2 as the last library, then you may want to rebuild it.

Re: core in libcma.2

Dilip Kumar_4 — Wed, 01 Jun 2005 00:38:50 GMT

Hello Kent:
This is the output from chatr.

# chatr sc_ocm
sc_ocm:
shared executable
shared library dynamic path search:
SHLIB_PATH disabled second
embedded path disabled first Not Defined

shared library list:
dynamic /usr/lib/libndbm.2
dynamic /usr/lib/libdce.2
dynamic /usr/lib/libm.2
dynamic /usr/lib/libc.1
dynamic /usr/lib/libcl.2
dynamic /usr/lib/libc.2

shared library binding:
immediate nonfatal verbose
global hash table disabled
plabel caching disabled
global hash array size:1103
global hash array nbuckets:3
shared vtable support disabled
static branch prediction disabled
executable from stack: D (default)
kernel assisted branch prediction enabled
lazy swap allocation disabled
text segment locking disabled
data segment locking disabled
third quadrant private data space disabled
fourth quadrant private data space disabled
third quadrant global data space disabled
data page size: D (default)
instruction page size: D (default)
nulptr references enabled
shared library private mapping disabled
shared library text merging disabled