#!/usr/bin/env bash
# -*- coding: utf-8 -*-
#
# dissector_fuzz.sh -- fuzz test netsniff-ng's dissector and pcap io methods
#		       with shitty pcap example files from the Wireshark archive
#
# Copyright (C) 2012 Daniel Borkmann <borkmann@redhat.com>
# Copyright (C) 2012 Stefan Seering <sseerin@imn.htwk-leipzig.de>
#
# Note: build and *install* the toolkit first before running this script!
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.

set -u

if [ ${BASH_VERSINFO} -lt 3 ] ; then
	echo 'Error: Your bash need to be version 3 or newer. Exiting.'
	exit 1 # operators like =~ produce errors silently in old bash versions, so exit here
fi

archive='ftp://wireshark.org/automated/captures/'
show_output='' # empty string evaluates to false
run_through='' # empty string evaluates to false
count_cores=0
count_files=0
netsniff_ng_opts=''

if [ $# -gt 0 ] ; then
	if [ "$1" = '-h' -o "$1" = '--help' -o "$1" = '--usage' ] ; then
		echo 'Usage: dissector_fuzz [-s (show netsniff-ng output, default: no)] [-r (keep running on errors, default: no)] [netsniff-ng long-args]'
		exit 0
	fi

	for opt in $@ ; do
		if [ "${opt}" = '-s' ] ; then
			show_output='true'
		elif [ "${opt}" = '-r' ] ; then
			run_through='true'
		else
			netsniff_ng_opts="${netsniff_ng_opts} ${opt}";
		fi
	done
fi

mkdir -p fuzzing
cd fuzzing
wget -r -Nc -np -nd -A.pcap "$archive"  |& grep -E "%|^--"
ulimit -c unlimited
rm -f core
for file in *.pcap
do
	echo "Testing file $file ..."
	if [ $show_output ]; then
		netsniff-ng --in "$file" "${netsniff_ng_opts}"
	else
		netsniff-ng --in "$file" "${netsniff_ng_opts}" > /dev/null
	fi
	if [ -e core ]; then
		echo "Fuck, core dumped on $file!"
		let count_cores=count_cores+1
		if [ $run_through ]; then
			rm core
		else
			exit
		fi
	fi
done

if which cowsay > /dev/null ; then
	echo_cmd='cowsay'
else
	echo_cmd='echo'
fi

${echo_cmd} 'Your fuckup Score'
echo " * tested pcaps: $count_files"
echo " * core dumps:   $count_cores"
84c597f896a7d46'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/Documentation/frv'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=930c532869774ebf8af9efe9484c597f896a7d46'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=930c532869774ebf8af9efe9484c597f896a7d46'>Documentation</a>/<a href='/cgit.cgi/linux/net-next.git/commit/Documentation/frv?id=930c532869774ebf8af9efe9484c597f896a7d46'>frv</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='930c532869774ebf8af9efe9484c597f896a7d46'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Ilya Dryomov &lt;idryomov@gmail.com&gt;</td><td class='right'>2016-07-19 03:50:28 +0200</td></tr>
<tr><th>committer</th><td>Ilya Dryomov &lt;idryomov@gmail.com&gt;</td><td class='right'>2016-07-22 15:17:40 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation/frv?id=930c532869774ebf8af9efe9484c597f896a7d46'>930c532869774ebf8af9efe9484c597f896a7d46</a> (<a href='/cgit.cgi/linux/net-next.git/patch/Documentation/frv?id=930c532869774ebf8af9efe9484c597f896a7d46'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=930c532869774ebf8af9efe9484c597f896a7d46'>68072d2a5c42dbf347514b8737f1abd0df044966</a> /<a href='/cgit.cgi/linux/net-next.git/tree/Documentation/frv?id=930c532869774ebf8af9efe9484c597f896a7d46'>Documentation/frv</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation/frv?id=92d21ac74a9e3c09b0b01c764e530657e4c85c49'>92d21ac74a9e3c09b0b01c764e530657e4c85c49</a> (<a href='/cgit.cgi/linux/net-next.git/diff/Documentation/frv?id=930c532869774ebf8af9efe9484c597f896a7d46&amp;id2=92d21ac74a9e3c09b0b01c764e530657e4c85c49'>diff</a>)</td></tr></table>
<div class='commit-subject'>libceph: apply new_state before new_up_client on incrementals</div><div class='commit-msg'>Currently, osd_weight and osd_state fields are updated in the encoding
order.  This is wrong, because an incremental map may look like e.g.

    new_up_client: { osd=6, addr=... } # set osd_state and addr
    new_state: { osd=6, xorstate=EXISTS } # clear osd_state

Suppose osd6's current osd_state is EXISTS (i.e. osd6 is down).  After
applying new_up_client, osd_state is changed to EXISTS | UP.  Carrying
on with the new_state update, we flip EXISTS and leave osd6 in a weird
"!EXISTS but UP" state.  A non-existent OSD is considered down by the
mapping code

2087    for (i = 0; i &lt; pg-&gt;pg_temp.len; i++) {
2088            if (ceph_osd_is_down(osdmap, pg-&gt;pg_temp.osds[i])) {
2089                    if (ceph_can_shift_osds(pi))
2090                            continue;
2091
2092                    temp-&gt;osds[temp-&gt;size++] = CRUSH_ITEM_NONE;

and so requests get directed to the second OSD in the set instead of
the first, resulting in OSD-side errors like:

[WRN] : client.4239 192.168.122.21:0/2444980242 misdirected client.4239.1:2827 pg 2.5df899f2 to osd.4 not [1,4,6] in e680/680

and hung rbds on the client:

[  493.566367] rbd: rbd0: write 400000 at 11cc00000 (0)
[  493.566805] rbd: rbd0:   result -6 xferred 400000
[  493.567011] blk_update_request: I/O error, dev rbd0, sector 9330688

The fix is to decouple application from the decoding and:
- apply new_weight first
- apply new_state before new_up_client
- twiddle osd_state flags if marking in
- clear out some of the state if osd is destroyed

Fixes: http://tracker.ceph.com/issues/14901

Cc: stable@vger.kernel.org # 3.15+: 6dd74e44dc1d: libceph: set 'exists' flag for newly up osd
Cc: stable@vger.kernel.org # 3.15+
Signed-off-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
Reviewed-by: Josh Durgin &lt;jdurgin@redhat.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=930c532869774ebf8af9efe9484c597f896a7d46'>Diffstat</a> (limited to 'Documentation/frv')</div><table summary='diffstat' class='diffstat'>