Re: Tools to classify / uniquify core dumps or stack traces?

Aurelian Melinte
2013-08-01T23:05:43Z

On 01/08/2013 3:35 PM, Jan Kratochvil wrote:
> On Thu, 01 Aug 2013 21:26:21 +0200, Paul Smith wrote:
>
>> Hi all. I've got an environment where I'm getting lots of core dumps
>> from various places and it's very tedious to go through them and
>> determine which ones are for unique problems, and which are essentially
>> duplicates (same bug causing the core dump).
>>
>> I was thinking of throwing together some kind of Perl or Python script
>> that could compare and categorize stack traces, but I thought surely
>> someone must have done something like this before.
>>
>> Anyone have any pointers or thoughts about something like this?
>>

I use a home-brewed script - pasted below - to turn a collection of core
dumps into a report for each core. Then I sift manually through but
still much faster than analyzing core by core.

Regards,
a.

#!/bin/bash

#
# A script to extract core-file informations
#

if [ $# -ne 1 ]
then
echo "Usage:`basename $0` <for-binary-image>"
exit -1
else
binimg=$1
fi

# Today and yesterdays cores
cores=`find .-name '*.core' -mtime -1`

#cores=`find . -name '*.core'`

for corein $cores
do
gdblogfile="$core-gdb.log"
rm $gdblogfile

bininfo=`ls -l $binimg`
coreinfo=`ls -l $core`

gdb -batch \
-ex "set logging file$gdblogfile" \
-ex "set logging on" \
-ex "set pagination off" \
-ex "printf\"**\n** Process info for$binimg -$core \n** Generated`date`\n\"" \
-ex "printf\"**\n**$bininfo \n**$coreinfo\n**\n\"" \
-ex "file$binimg" \
-ex "core-file$core" \
-ex "bt" \
-ex "info proc" \
-ex "printf\"*\n* Libraries\n*\n\"" \
-ex "info sharedlib" \
-ex "printf\"*\n* Memory map\n*\n\"" \
-ex "info target" \
-ex "printf\"*\n* Registers\n*\n\"" \
-ex "info registers" \
-ex "printf\"*\n* Current instructions\n*\n\"" -ex "x/16i\$pc" \
-ex "printf\"*\n* Threads (full)\n*\n\"" \
-ex "info threads" \
-ex "bt" \
-ex "thread apply all bt full" \
-ex "printf\"*\n* Threads (basic)\n*\n\"" \
-ex "info threads" \
-ex "thread apply all bt" \
-ex "printf\"*\n* Done\n*\n\"" \
-ex "quit"
done