On Mon, 2005-08-01 at 17:24 -0700, Zac Medico wrote:
Hi Zac,
Hi Jules,
Jules Colding wrote:
Hi,
I can't emerge mozilla-1.7.10-r1. I don't know if this is just me or if
anyone else is seeing the same, but here is what I got. Output and info
below.
snip (lots of text)
What was the solution to the segault that you reported when you tried
to remerge automake and autoconf?
There are still occasional segfaults during mkdir -p operations in the
mkinstalldirs script when I do make install of various packages. I
have no clue why but re-running make install makes make pass over
where the error was and continue. Very weird indeed...
If you suspect hardware problems then you should try the memtest
script mentioned by Francesco in this thread:
I did something like that. I emerged memtest86plus as a boot option and
let it do its thing during the night. It didn't find anything though.
I tried the aforementioned script just to see if that picked up
anything. Lo and behold... it segfaulted in mkdir. I am beginning to
suspect a subtle reiserfs (mounted with noatime and notail) bug as I am
only seeing segfaults with mkdir and only under high load. There was
something in /var/log/messages as well. Script, output, log and info
below.
Regards,
jules
# memtest.sh #
#!/bin/bash
#
# memtest.sh
#
# Shell script to help isolate memory failures under linux
#
# Author: Doug Ledford + contributors
#
# (C) Copyright 2000-2002 Doug Ledford; Red Hat, Inc.
# This shell script is released under the terms of the GNU General
# Public License Version 2, June 1991. If you do not have a copy
# of the GNU General Public License Version 2, then one may be
# retrieved from http://people.redhat.com/dledford/GPL.html
#
# Note, this needs bash2 for the wait command support.
# This is where we will run the tests at
TEST_DIR=/home/colding/tmp
# The location of the linux kernel source file we will be using
if [ -z $SOURCE_FILE ]; then
SOURCE_FILE=$TEST_DIR/linux.tar.gz
fi
if [ ! -f $SOURCE_FILE ]; then
echo Missing source file $SOURCE_FILE
exit 1
fi
# How many passes to run of this test, higher numbers are better
if [ -z $NR_PASSES ]; then
NR_PASSES=1
fi
# Guess how many megs the unpacked archive is
if [ -z $MEG_PER_COPY ]; then
MEG_PER_COPY=$(ls -l $SOURCE_FILE | awk '{print int($5/1024/1024) * 4}')
fi
# How many trees do we have to unpack in order to make our trees be larger
# than physical RAM? If we don't unpack more data than memory can hold
# before we start to run the diff program on the trees then we won't
# actually flush the data to disk and force the system to reread the data
# from disk. Instead, the system will do everything in RAM. That doesn't
# work (as far as the memory test is concerned). It's the simultaneous
# unpacking of data in memory and the read/writes to hard disk via DMA that
# breaks the memory subsystem in most cases. Doing everything in RAM without
# causing disk I/O will pass bad memory far more often than when you add
# in the disk I/O.
if [ -z $NR_SIMULTANEOUS ]; then
NR_SIMULTANEOUS=$(free | awk -v meg_per_copy=$MEG_PER_COPY 'NR == 2 {print
int($2*1.5/1024/meg_per_copy + (($2/1024)%meg_per_copy = (meg_per_copy/2)) +
(($2/1024/32) 1))}')
fi
# Should we unpack/diff the $NR_SIMULTANEOUS trees in series or in parallel?
if [ ! -z $PARALLEL ]; then
PARALLEL=yes
else
PARALLEL=no
fi
PARALLEL=yes
if [ ! -z $JUST_INFO ]; then
echo TEST_DIR: $TEST_DIR
echo SOURCE_FILE:$SOURCE_FILE
echo NR_PASSES: $NR_PASSES
echo MEG_PER_COPY: $MEG_PER_COPY
echo NR_SIMULTANEOUS:$NR_SIMULTANEOUS
echo PARALLEL: $PARALLEL
echo
exit
fi
cd $TEST_DIR
# Remove any possible left over directories from a cancelled previous run
rm -fr linux linux.orig linux.pass.*
# Unpack the one copy of the source tree that we will be comparing against
tar -xzf $SOURCE_FILE
mv linux linux.orig
i=0
while [ $i -lt $NR_PASSES ]; do
j=0
while [ $j -lt $NR_SIMULTANEOUS ]; do
if [ $PARALLEL = yes ]; then
(mkdir $j; tar -xzf $SOURCE_FILE -C $j; mv $j/linux linux.pass.$j; rmdir
$j)
else
tar -xzf $SOURCE_FILE
mv linux linux.pass.$j
fi
j=`expr $j + 1`
done
wait
j=0
while [ $j -lt $NR_SIMULTANEOUS ]; do
if [ $PARALLEL = yes ]; then
(diff -U 3 -rN linux.orig linux.pass.$j; rm -fr linux.pass.$j)
else
diff -U 3 -rN linux.orig linux.pass.$j
rm -fr linux.pass.$j
fi
j=`expr $j + 1`
done
wait
i=`expr $i + 1`
done
# Clean up after ourselves
rm -fr linux linux.orig linux.pass.*
# Complete script output #
./memtest.sh: line 107: 19536 Segmentation fault mkdir $j
./memtest.sh: line 107: 19553 Segmentation fault mkdir $j
Inconsistency detected by ld.so: dynamic-link.h: 151: elf_get_dynamic_info:
Assertion `info[20]-d_un.d_val == 7' failed!
Inconsistency detected by ld.so: dynamic-link.h: 151: elf_get_dynamic_info:
Assertion
