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Identifying crash with hs_err_pid*.log and gdb

2 replies [Last post]
Joined: 2005-01-30
Points: 0

Our application keeps on crashing on HP-UX machine.
We only have the hs_err_pid*.log, the library(*.so) file that caused the crash, and the source file of the library. There was no core file.

Here's the fatal error summary listed in hs_err_pid*.log file.

# A fatal error has been detected by the Java Runtime Environment:
# SIGBUS (10) at pc=c00000000f675671, pid=26914, tid=44
# JRE version: 6.0
# Java VM: Java HotSpot(TM) 64-Bit Server VM (17.1-b03-jre1.6.0.09-rc1 mixed mode hp-ux-ia64 )
# Problematic frame:
# C [] _NZ10TFM07PrintTraceEPi+0x5065eff9

I have read in the "Troubleshooting and Diagnostic Guide" that it is possible to
inspect the instructions that caused the crash without a debugger or core file by
using a disassembler to dump instructions near the offset, in our case [0x5065eff9].

C [] _NZ10TFM07PrintTraceEPi+0x5065eff9

So I tried disassembling the library and dump the instructions using
GDB, but I am at lost in determining the instruction/offset that caused the crash.

Here's what I did.

$ gdb

(gdb) info line _NZ10TFM07PrintTraceEPi
Line 111 of "tfmtrace.cpp"
starts at address 0x4000000000099590:0 <TFMTrace::PrintTrace(char*,unsigned int,int*)>
and ends at 0x40000000000995c0:2 <TFMTrace::PrintTrace(char*,unsigned int,int*)+0x32>.

(gdb) disas 0x4000000000099590 0x40000000000995c0
Dump of assembler code from 0x4000000000099590:0 to 0x40000000000995c0:0:
;;; DOC Line Information: [Line, Column Start, Column End] [Line, Column] [Line]
;;; File: tfmtrace.cpp
0x4000000000099590:0 <TFMTrace::PrintTrace(...)>: alloc r37=ar.pfs,0,30,4,0 MMI
0x4000000000099590:1 <TFMTrace::PrintTrace(...)+0x1>: mov r46=r35
0x4000000000099590:2 <TFMTrace::PrintTrace(...)+0x2>: mov r39=pr
0x40000000000995a0:0 <TFMTrace::PrintTrace(...)+0x10>: adds sp=0xffffffffffffefa0,sp MMI,
0x40000000000995a0:1 <TFMTrace::PrintTrace(...)+0x11>: adds r45=0x498,r32
0x40000000000995a0:2 <TFMTrace::PrintTrace(...)+0x12>: mov ret3=-1;;
0x40000000000995b0:0 <TFMTrace::PrintTrace(...)+0x20>: ld8.a r62=[r45] MMI
0x40000000000995b0:1 <TFMTrace::PrintTrace(...)+0x21>: p6=r0,r46
0x40000000000995b0:2 <TFMTrace::PrintTrace(...)+0x22>: mov r38=rp
End of assembler dump.

Can I use the output of "disas" to find the nearest offset of 0x5065eff9?
It seems like the addresses (0x4000000000099590~0x40000000000995b0) are different
from that of 0x5065eff9.

Looking forward for any inputs.

Thanks and best regards.

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Joined: 2011-08-03
Points: 0

Hello: Please do a 'disass _NZ10TFM07PrintTraceEPi' at the gdb prompt to get the disassembly output of the entire '_NZ10TFM07PrintTraceEPi' routine. Please scroll to the address obtained by adding the start address of '_NZ10TFM07PrintTraceEPi' to 0x5065eff9 to get the instruction you are interested in. For further debugging, please invoke the corefile under the debugger. For java corefile debugging with WDB, please go through the section " Java corefile debugging support" in the Debugging with GDB Manual. (obtainable from or from the 'Documentation' link off

For HP-UX WDB debugger queries, feel free to send your queries to <> (and more broadly, you may want to post question on HP-UX S/W development tools portal to <hpux-developmen-public> as well)

Joined: 2005-01-30
Points: 0

Hello. Thank you for your reply. As instructed, I was able to get the
instruction by adding the start address of '_NZ10TFM07PrintTraceEPi'
to 0x5065eff9. Also, I was furnished a copy of the core dump file. The
GDB Manual was of great help in comming up with the following result.

By using "backtrace" command, I was able to identify the source of the
SIGBUS(BUS_ADRALN) signal which is at frame 8.

(gdb) bt
#0 0xc0000000001e5350:0 in _lwp_kill+0x30 ()
from /usr/lib/hpux64/
#1 0xc00000000014c7b0:0 in pthread_kill+0x9d0 ()
from /usr/lib/hpux64/
#2 0xc0000000002e4080:0 in raise+0xe0 () from /usr/lib/hpux64/
#3 0xc0000000003f47f0:0 in abort+0x170 () from /usr/lib/hpux64/
#4 0xc00000000e65e0d0:0 in os::abort ()
at /CLO/Components/JAVA_HOTSPOT/Src/src/os/hp-ux/vm/os_hp-ux.cpp:2033
#5 0xc00000000eb473e0:0 in VMError::report_and_die ()
at /CLO/Components/JAVA_HOTSPOT/Src/src/share/vm/utilities/vmError.cpp:1008
#6 0xc00000000e66fc90:0 in os::Hpux::JVM_handle_hpux_signal ()
at /CLO/Components/JAVA_HOTSPOT/Src/src/os_cpu/hp-ux_ia64/vm/os_hp-ux_ia64.cpp:1051
#7 <signal handler called>
#8 0xc00000000c0c5670:1 in TFMTrace::PrintTrace () at tfmtrace.cpp:1065
#9 0xc00000000c0c4f70:0 in FMLogger::WriteLog () at fmlogger.cpp:90

By viewing frame 8, it seems that the abort happened in the IF-Statement
in tfmtrace.cpp line# 1065. But what I don't understand is that why would
a BUS_ADRALN signal will be generated in the IF-Statement? Both dwTrcLen
and dwMaxTrcLen are local variables.

(gdb) frame 8
#8 0xc00000000c0c5670:1 in TFMTrace::PrintTrace () at tfmtrace.cpp:1065
1065 if( dwTrcLen <= dwMaxTrcLen ) {
Current language: auto; currently c++

I tried to disassemble frame 8 to know what instructions are being performed.
Unfortunately, I was not able to understand the assembly codes and have no
idea on the cause of the abort. =(

(gdb) disas $pc-16*4 $pc+16*4
0xc00000000c0c5660:0 <TFMTrace::PrintTrace(...)+0xd0> : ld4.a r27=[r48] MII,
;;; 1065 if( dwTrcLen <= dwMaxTrcLen ) {
0xc00000000c0c5660:1 <TFMTrace::PrintTrace(...)+0xd1> : adds r28=28,r42
0xc00000000c0c5660:2 <TFMTrace::PrintTrace(...)+0xd2> : p6=r0,r46;;
0xc00000000c0c5670:0 <TFMTrace::PrintTrace(...)+0xe0> : r26=[r28] MMI,
0xc00000000c0c5670:1 <TFMTrace::PrintTrace(...)+0xe1> : (p6) ld4 r31=[r28]
0xc00000000c0c5670:2 <TFMTrace::PrintTrace(...)+0xe2> : adds r46=24,r42;;
0xc00000000c0c5680:0 <TFMTrace::PrintTrace(...)+0xf0> : (p6) st4 [r35]=r31 MI,I
0xc00000000c0c5680:1 <TFMTrace::PrintTrace(...)+0xf1> : adds r59=36,r42;;
0xc00000000c0c5680:2 <TFMTrace::PrintTrace(...)+0xf2> : nop.i 0x0
0xc00000000c0c5690:0 <TFMTrace::PrintTrace(...)+0x100>: ld4.c.clr r27=[r48] MIB,
;;; 1067 dwLen = dwTrcLen ;
0xc00000000c0c5690:1 <TFMTrace::PrintTrace(...)+0x101>: cmp4.eq.unc p6,p8=99,r27
0xc00000000c0c5690:2 <TFMTrace::PrintTrace(...)+0x102>: nop.b 0x0;;
0xc00000000c0c56a0:0 <TFMTrace::PrintTrace(...)+0x110>: (p8) ld4.c.clr r26=[r28] MMI
;;; 1068 }
0xc00000000c0c56a0:1 <TFMTrace::PrintTrace(...)+0x111>: (p6) st4 [r48]=r47
0xc00000000c0c56a0:2 <TFMTrace::PrintTrace(...)+0x112>: cmp4.geu.unc p7=r26,r27
End of assembler dump.

Here are my follow-up questions:
1) Is there any other thing (e.g. other gdb command) I could check so as to
determine the cause of BUS_ADRALN?

2) Is it possible that a BUS_ADRALN happened during the execution of the
IF-Statement above?

3) Do you have any idea what does the disassemble instruction set mean?

Thanks and looking forward for any inputs.