// https://syzkaller.appspot.com/bug?id=f698e37dae8c3eda978622cbd7747f61259c9d3a // autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #define BITMASK_LEN(type, bf_len) (type)((1ull << (bf_len)) - 1) #define BITMASK_LEN_OFF(type, bf_off, bf_len) \ (type)(BITMASK_LEN(type, (bf_len)) << (bf_off)) #define STORE_BY_BITMASK(type, addr, val, bf_off, bf_len) \ if ((bf_off) == 0 && (bf_len) == 0) { \ *(type*)(addr) = (type)(val); \ } else { \ type new_val = *(type*)(addr); \ new_val &= ~BITMASK_LEN_OFF(type, (bf_off), (bf_len)); \ new_val |= ((type)(val)&BITMASK_LEN(type, (bf_len))) << (bf_off); \ *(type*)(addr) = new_val; \ } #ifndef __NR_mmap #define __NR_mmap 192 #endif #ifndef __NR_getsockopt #define __NR_getsockopt 365 #endif #ifndef __NR_bpf #define __NR_bpf 357 #endif #ifndef __NR_socket #define __NR_socket 359 #endif #ifndef __NR_setsockopt #define __NR_setsockopt 366 #endif #ifndef __NR_write #define __NR_write 4 #endif #undef __NR_mmap #define __NR_mmap __NR_mmap2 long r[2]; void loop() { memset(r, -1, sizeof(r)); syscall(__NR_mmap, 0x20000000, 0xfff000, 3, 0x32, -1, 0); *(uint32_t*)0x20781000 = 0; *(uint32_t*)0x20781004 = 0x1c; *(uint32_t*)0x20781008 = 0x20519fa8; *(uint16_t*)0x20519fa8 = 0xa; *(uint16_t*)0x20519faa = 0; *(uint32_t*)0x20519fac = 0; *(uint8_t*)0x20519fb0 = 0xfe; *(uint8_t*)0x20519fb1 = 0x80; *(uint8_t*)0x20519fb2 = 0; *(uint8_t*)0x20519fb3 = 0; *(uint8_t*)0x20519fb4 = 0; *(uint8_t*)0x20519fb5 = 0; *(uint8_t*)0x20519fb6 = 0; *(uint8_t*)0x20519fb7 = 0; *(uint8_t*)0x20519fb8 = 0; *(uint8_t*)0x20519fb9 = 0; *(uint8_t*)0x20519fba = 0; *(uint8_t*)0x20519fbb = 0; *(uint8_t*)0x20519fbc = 0; *(uint8_t*)0x20519fbd = 0; *(uint8_t*)0x20519fbe = 0; *(uint8_t*)0x20519fbf = 0xaa; *(uint32_t*)0x20519fc0 = 0x9c; *(uint32_t*)0x20f91ffc = 0x10; syscall(__NR_getsockopt, -1, 0x84, 0x6f, 0x20781000, 0x20f91ffc); *(uint32_t*)0x20b70000 = 1; *(uint32_t*)0x20b70004 = 5; *(uint64_t*)0x20b70008 = 0x20519fa8; *(uint64_t*)0x20b70010 = 0x20ce4ff6; *(uint32_t*)0x20b70018 = 1; *(uint32_t*)0x20b7001c = 0x1000; *(uint64_t*)0x20b70020 = 0x204bb000; *(uint32_t*)0x20b70028 = 0; *(uint32_t*)0x20b7002c = 0; *(uint8_t*)0x20b70030 = 0; *(uint8_t*)0x20b70031 = 0; *(uint8_t*)0x20b70032 = 0; *(uint8_t*)0x20b70033 = 0; *(uint8_t*)0x20b70034 = 0; *(uint8_t*)0x20b70035 = 0; *(uint8_t*)0x20b70036 = 0; *(uint8_t*)0x20b70037 = 0; *(uint8_t*)0x20b70038 = 0; *(uint8_t*)0x20b70039 = 0; *(uint8_t*)0x20b7003a = 0; *(uint8_t*)0x20b7003b = 0; *(uint8_t*)0x20b7003c = 0; *(uint8_t*)0x20b7003d = 0; *(uint8_t*)0x20b7003e = 0; *(uint8_t*)0x20b7003f = 0; *(uint32_t*)0x20b70040 = 0; *(uint8_t*)0x20519fa8 = 0x18; STORE_BY_BITMASK(uint8_t, 0x20519fa9, 0, 0, 4); STORE_BY_BITMASK(uint8_t, 0x20519fa9, 0, 4, 4); *(uint16_t*)0x20519faa = 0; *(uint32_t*)0x20519fac = 0; *(uint8_t*)0x20519fb0 = 0; *(uint8_t*)0x20519fb1 = 0; *(uint16_t*)0x20519fb2 = 0; *(uint32_t*)0x20519fb4 = 0xfffffffe; STORE_BY_BITMASK(uint8_t, 0x20519fb8, 2, 0, 3); STORE_BY_BITMASK(uint8_t, 0x20519fb8, 0, 3, 2); STORE_BY_BITMASK(uint8_t, 0x20519fb8, 0xb, 5, 3); STORE_BY_BITMASK(uint8_t, 0x20519fb9, 0x7a, 0, 4); STORE_BY_BITMASK(uint8_t, 0x20519fb9, 0, 4, 4); *(uint16_t*)0x20519fba = 0xff70; *(uint32_t*)0x20519fbc = 0xfffffffc; *(uint8_t*)0x20519fc8 = 0x95; *(uint8_t*)0x20519fc9 = 0; *(uint16_t*)0x20519fca = 0; *(uint32_t*)0x20519fcc = 0; memcpy((void*)0x20ce4ff6, "syzkaller", 10); r[0] = syscall(__NR_bpf, 5, 0x20b70000, 0x48); r[1] = syscall(__NR_socket, 0x10, 3, 0); *(uint32_t*)0x204aeffc = r[0]; syscall(__NR_setsockopt, r[1], 1, 0x32, 0x204aeffc, 4); memcpy((void*)0x20fd3000, "\x26\x00\x00\x00\x5e\x00\x09\x00\x00\x00\xea\xf8" "\x3a\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00" "\xff\xff\xff\x00\x00\x08\xdb\x1e\xe9\xff\x44\x35" "\xea\xde", 38); syscall(__NR_write, r[1], 0x20fd3000, 0x26); } int main() { loop(); return 0; }