5a3924b985
Long objdir paths make it easy to hit the version string length limit in kernel dump headers. The build number and timestamp are unlikely to be truncated and ought to be sufficient to protect against false positives. Discussed with: jhb MFC after: 1 week
352 lines
8.0 KiB
Bash
Executable File
352 lines
8.0 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2008 Yahoo!, Inc.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. Neither the name of the author nor the names of any co-contributors
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# may be used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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usage()
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{
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echo "usage: crashinfo [-b] [-d crashdir] [-n dumpnr]" \
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"[-k kernel] [core]"
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exit 1
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}
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# Find a gdb binary to use and save the value in GDB.
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find_gdb()
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{
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local binary
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for binary in /usr/local/bin/gdb /usr/libexec/gdb /usr/bin/gdb; do
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if [ -x ${binary} ]; then
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GDB=${binary}
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return
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fi
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done
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}
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# Run a single gdb command against a kernel file in batch mode.
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# The kernel file is specified as the first argument and the command
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# is given in the remaining arguments.
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gdb_command()
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{
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local k
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k=$1 ; shift
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if [ ${GDB} = /usr/local/bin/gdb ]; then
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${GDB} -batch -ex "$@" $k
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else
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echo -e "$@" | ${GDB} -x /dev/stdin -batch $k
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fi
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}
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find_kernel()
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{
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local ivers k kvers
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ivers=$(awk '
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/Version String/ {
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print
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nextline=1
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next
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}
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nextline==1 {
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if ($0 ~ "^ [A-Za-z ]+: ") {
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nextline=0
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} else {
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print
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}
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}' $INFO)
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# Look for a matching kernel version, handling possible truncation
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# of the version string recovered from the dump.
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for k in `sysctl -n kern.bootfile` $(ls -t /boot/*/kernel); do
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kvers=$(gdb_command $k 'printf " Version String: %s", version' | \
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awk "{line=line\$0\"\n\"} END{print substr(line,1,${#ivers})}" \
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2>/dev/null)
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if [ "$ivers" = "$kvers" ]; then
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KERNEL=$k
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break
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fi
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done
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}
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BATCH=false
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CRASHDIR=/var/crash
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DUMPNR=
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KERNEL=
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while getopts "bd:n:k:" opt; do
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case "$opt" in
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b)
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BATCH=true
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;;
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d)
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CRASHDIR=$OPTARG
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;;
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n)
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DUMPNR=$OPTARG
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;;
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k)
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KERNEL=$OPTARG
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;;
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\?)
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usage
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;;
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esac
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done
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shift $((OPTIND - 1))
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if [ $# -eq 1 ]; then
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if [ -n "$DUMPNR" ]; then
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echo "-n and an explicit vmcore are mutually exclusive"
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usage
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fi
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# Figure out the crash directory and number from the vmcore name.
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CRASHDIR=`dirname $1`
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DUMPNR=$(expr $(basename $1) : 'vmcore\.\([0-9]*\)$')
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if [ -z "$DUMPNR" ]; then
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echo "Unable to determine dump number from vmcore file $1."
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exit 1
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fi
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elif [ $# -gt 1 ]; then
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usage
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else
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# If we don't have an explicit dump number, operate on the most
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# recent dump.
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if [ -z "$DUMPNR" ]; then
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if ! [ -r $CRASHDIR/bounds ]; then
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echo "No crash dumps in $CRASHDIR."
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exit 1
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fi
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next=`cat $CRASHDIR/bounds`
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if [ -z "$next" ] || [ "$next" -eq 0 ]; then
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echo "No crash dumps in $CRASHDIR."
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exit 1
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fi
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DUMPNR=$(($next - 1))
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fi
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fi
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VMCORE=$CRASHDIR/vmcore.$DUMPNR
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INFO=$CRASHDIR/info.$DUMPNR
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FILE=$CRASHDIR/core.txt.$DUMPNR
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HOSTNAME=`hostname`
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if $BATCH; then
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echo "Writing crash summary to $FILE."
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exec > $FILE 2>&1
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fi
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find_gdb
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if [ -z "$GDB" ]; then
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echo "Unable to find a kernel debugger."
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exit 1
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fi
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if [ ! -e $VMCORE ]; then
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echo "$VMCORE not found"
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exit 1
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fi
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if [ ! -e $INFO ]; then
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echo "$INFO not found"
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exit 1
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fi
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# If the user didn't specify a kernel, then try to find one.
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if [ -z "$KERNEL" ]; then
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find_kernel
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if [ -z "$KERNEL" ]; then
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echo "Unable to find matching kernel for $VMCORE"
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exit 1
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fi
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elif [ ! -e $KERNEL ]; then
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echo "$KERNEL not found"
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exit 1
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fi
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umask 077
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# Simulate uname
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ostype=$(gdb_command $KERNEL 'printf "%s", ostype')
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osrelease=$(gdb_command $KERNEL 'printf "%s", osrelease')
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version=$(gdb_command $KERNEL 'printf "%s", version' | tr '\t\n' ' ')
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machine=$(gdb_command $KERNEL 'printf "%s", machine')
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if ! $BATCH; then
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echo "Writing crash summary to $FILE."
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exec > $FILE 2>&1
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fi
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echo "$HOSTNAME dumped core - see $VMCORE"
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echo
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date
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echo
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echo "$ostype $HOSTNAME $osrelease $version $machine"
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echo
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sed -ne '/^ Panic String: /{s//panic: /;p;}' $INFO
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echo
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# XXX: /bin/sh on 7.0+ is broken so we can't simply pipe the commands to
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# kgdb via stdin and have to use a temporary file instead.
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file=`mktemp /tmp/crashinfo.XXXXXX`
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if [ $? -eq 0 ]; then
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echo "bt" >> $file
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echo "quit" >> $file
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${GDB%gdb}kgdb $KERNEL $VMCORE < $file
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rm -f $file
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echo
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fi
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echo
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echo "------------------------------------------------------------------------"
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echo "ps -axlww"
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echo
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ps -M $VMCORE -N $KERNEL -axlww
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echo
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echo "------------------------------------------------------------------------"
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echo "vmstat -s"
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echo
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vmstat -M $VMCORE -N $KERNEL -s
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echo
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echo "------------------------------------------------------------------------"
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echo "vmstat -m"
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echo
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vmstat -M $VMCORE -N $KERNEL -m
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echo
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echo "------------------------------------------------------------------------"
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echo "vmstat -z"
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echo
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vmstat -M $VMCORE -N $KERNEL -z
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echo
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echo "------------------------------------------------------------------------"
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echo "vmstat -i"
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echo
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vmstat -M $VMCORE -N $KERNEL -i
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echo
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echo "------------------------------------------------------------------------"
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echo "pstat -T"
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echo
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pstat -M $VMCORE -N $KERNEL -T
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echo
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echo "------------------------------------------------------------------------"
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echo "pstat -s"
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echo
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pstat -M $VMCORE -N $KERNEL -s
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echo
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echo "------------------------------------------------------------------------"
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echo "iostat"
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echo
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iostat -M $VMCORE -N $KERNEL
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echo
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echo "------------------------------------------------------------------------"
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echo "ipcs -a"
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echo
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ipcs -C $VMCORE -N $KERNEL -a
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echo
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echo "------------------------------------------------------------------------"
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echo "ipcs -T"
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echo
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ipcs -C $VMCORE -N $KERNEL -T
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echo
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# XXX: This doesn't actually work in 5.x+
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if false; then
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echo "------------------------------------------------------------------------"
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echo "w -dn"
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echo
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w -M $VMCORE -N $KERNEL -dn
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echo
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fi
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echo "------------------------------------------------------------------------"
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echo "nfsstat"
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echo
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nfsstat -M $VMCORE -N $KERNEL
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echo
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echo "------------------------------------------------------------------------"
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echo "netstat -s"
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echo
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netstat -M $VMCORE -N $KERNEL -s
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echo
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echo "------------------------------------------------------------------------"
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echo "netstat -m"
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echo
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netstat -M $VMCORE -N $KERNEL -m
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echo
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echo "------------------------------------------------------------------------"
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echo "netstat -anA"
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echo
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netstat -M $VMCORE -N $KERNEL -anA
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echo
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echo "------------------------------------------------------------------------"
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echo "netstat -aL"
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echo
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netstat -M $VMCORE -N $KERNEL -aL
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echo
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echo "------------------------------------------------------------------------"
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echo "fstat"
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echo
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fstat -M $VMCORE -N $KERNEL
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echo
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echo "------------------------------------------------------------------------"
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echo "dmesg"
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echo
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dmesg -a -M $VMCORE -N $KERNEL
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echo
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echo "------------------------------------------------------------------------"
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echo "kernel config"
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echo
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config -x $KERNEL
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echo
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echo "------------------------------------------------------------------------"
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echo "ddb capture buffer"
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echo
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ddb capture -M $VMCORE -N $KERNEL print
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