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
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
perf-read-vdso.c
// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <string.h>
#define VDSO__MAP_NAME "[vdso]"
/*
* Include definition of find_map() also used in util/vdso.c for
* building perf.
*/
#include "util/find-map.c"
int main(void)
{
void *start, *end;
size_t size, written;
if (find_map(&start, &end, VDSO__MAP_NAME))
return 1;
size = end - start;
while (size) {
written = fwrite(start, 1, size, stdout);
if (!written)
return 1;
start += written;
size -= written;
}
if (fflush(stdout))
return 1;
return 0;
}
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