From 75a7c5e2d1f09a4a58e7e1f1f4ef0b0f55a33413 Mon Sep 17 00:00:00 2001 From: Dmitry Vyukov Date: Mon, 19 Feb 2018 19:35:04 +0100 Subject: prog: rework address allocation 1. mmap all memory always, without explicit mmap calls in the program. This makes lots of things much easier and removes lots of code. Makes mmap not a special syscall and allows to fuzz without mmap enabled. 2. Change address assignment algorithm. Current algorithm allocates unmapped addresses too frequently and allows collisions between arguments of a single syscall. The new algorithm analyzes actual allocations in the program and places new arguments at unused locations. --- executor/syscalls_test.h | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'executor/syscalls_test.h') diff --git a/executor/syscalls_test.h b/executor/syscalls_test.h index 13e643dfc..9ea69df00 100644 --- a/executor/syscalls_test.h +++ b/executor/syscalls_test.h @@ -2,7 +2,10 @@ #if 0 #define GOARCH "32" -#define SYZ_REVISION "229a33891b79d4c76384836d58be89caaab83684" +#define SYZ_REVISION "6f7cae371c55b5afdfbc7f518e21c58894cfce5b" +#define SYZ_PAGE_SIZE 8192 +#define SYZ_NUM_PAGES 2048 +#define SYZ_DATA_OFFSET 536870912 unsigned syscall_count = 85; call_t syscalls[] = { {"mmap", 0, (syscall_t)mmap}, @@ -96,7 +99,10 @@ call_t syscalls[] = { #if 0 #define GOARCH "64" -#define SYZ_REVISION "72bf9b428d7ccdf1adbb2ef093b656ca3564ee14" +#define SYZ_REVISION "e5ba3c9ee8fe997bfacae016e4bbebd8ecb2f573" +#define SYZ_PAGE_SIZE 4096 +#define SYZ_NUM_PAGES 4096 +#define SYZ_DATA_OFFSET 536870912 unsigned syscall_count = 85; call_t syscalls[] = { {"mmap", 0, (syscall_t)mmap}, -- cgit mrf-deployment