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Revision 19a58ce1dc72264b9d50ff6d86cc36b3c439fb64 authored by Xinpeng Liu on 07 August 2019, 23:29:23 UTC, committed by Steven Rostedt (VMware) on 31 August 2019, 10:51:55 UTC 
tracing/probe: Fix null pointer dereference
 
BUG: KASAN: null-ptr-deref in trace_probe_cleanup+0x8d/0xd0
Read of size 8 at addr 0000000000000000 by task syz-executor.0/9746
trace_probe_cleanup+0x8d/0xd0
free_trace_kprobe.part.14+0x15/0x50
alloc_trace_kprobe+0x23e/0x250

Link: http://lkml.kernel.org/r/1565220563-980-1-git-send-email-danielliu861@gmail.com

Fixes: e3dc9f898ef9c ("tracing/probe: Add trace_event_call accesses APIs")
Signed-off-by: Xinpeng Liu <danielliu861@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
1 parent 595a438
Raw File
perf-archive.sh 
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# perf archive
# Arnaldo Carvalho de Melo <acme@redhat.com>

PERF_DATA=perf.data
if [ $# -ne 0 ] ; then
	PERF_DATA=$1
fi

#
# PERF_BUILDID_DIR environment variable set by perf
# path to buildid directory, default to $HOME/.debug
#
if [ -z $PERF_BUILDID_DIR ]; then
	PERF_BUILDID_DIR=~/.debug/
else
        # append / to make substitutions work
        PERF_BUILDID_DIR=$PERF_BUILDID_DIR/
fi

BUILDIDS=$(mktemp /tmp/perf-archive-buildids.XXXXXX)
NOBUILDID=0000000000000000000000000000000000000000

perf buildid-list -i $PERF_DATA --with-hits | grep -v "^$NOBUILDID " > $BUILDIDS
if [ ! -s $BUILDIDS ] ; then
	echo "perf archive: no build-ids found"
	rm $BUILDIDS || true
	exit 1
fi

MANIFEST=$(mktemp /tmp/perf-archive-manifest.XXXXXX)
PERF_BUILDID_LINKDIR=$(readlink -f $PERF_BUILDID_DIR)/

cut -d ' ' -f 1 $BUILDIDS | \
while read build_id ; do
	linkname=$PERF_BUILDID_DIR.build-id/${build_id:0:2}/${build_id:2}
	filename=$(readlink -f $linkname)
	echo ${linkname#$PERF_BUILDID_DIR} >> $MANIFEST
	echo ${filename#$PERF_BUILDID_LINKDIR} >> $MANIFEST
done

tar cjf $PERF_DATA.tar.bz2 -C $PERF_BUILDID_DIR -T $MANIFEST
rm $MANIFEST $BUILDIDS || true
echo -e "Now please run:\n"
echo -e "$ tar xvf $PERF_DATA.tar.bz2 -C ~/.debug\n"
echo "wherever you need to run 'perf report' on."
exit 0
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