From 645e75f8038d1b177ead2d6ea0b3ade6f7f9d985 Mon Sep 17 00:00:00 2001
From: Dmitry Vyukov <dvyukov@google.com>
Date: Thu, 7 Jun 2018 15:32:16 +0200
Subject: executor: make syscall table and number constant

We see some crashes that suggest corruption of the syscall number:

invalid command number 1296 (errno 11)
invalid command number 107 (errno 110)

Make the table and the number constant to prevent corruption.
---
 sys/syz-sysgen/sysgen.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'sys')

diff --git a/sys/syz-sysgen/sysgen.go b/sys/syz-sysgen/sysgen.go
index cef35ba05..ea8525cbc 100644
--- a/sys/syz-sysgen/sysgen.go
+++ b/sys/syz-sysgen/sysgen.go
@@ -251,8 +251,8 @@ var archTempl = template.Must(template.New("").Parse(`
 #define SYZ_PAGE_SIZE {{.PageSize}}
 #define SYZ_NUM_PAGES {{.NumPages}}
 #define SYZ_DATA_OFFSET {{.DataOffset}}
-unsigned syscall_count = {{len $.Calls}};
-call_t syscalls[] = {
+#define SYZ_SYSCALL_COUNT {{len $.Calls}}
+const call_t syscalls[] = {
 {{range $c := $.Calls}}	{"{{$c.Name}}", {{$c.NR}}{{if $c.NeedCall}}, (syscall_t){{$c.CallName}}{{end}}},
 {{end}}
 };
-- 
cgit mrf-deployment