// https://syzkaller.appspot.com/bug?id=6dcd14a729df98f989c7b76d254226ae67084efd // autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include static uintptr_t syz_open_dev(uintptr_t a0, uintptr_t a1, uintptr_t a2) { if (a0 == 0xc || a0 == 0xb) { char buf[128]; sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1, (uint8_t)a2); return open(buf, O_RDWR, 0); } else { char buf[1024]; char* hash; strncpy(buf, (char*)a0, sizeof(buf)); buf[sizeof(buf) - 1] = 0; while ((hash = strchr(buf, '#'))) { *hash = '0' + (char)(a1 % 10); a1 /= 10; } return open(buf, a2, 0); } } #ifndef __NR_mmap #define __NR_mmap 192 #endif #ifndef __NR_write #define __NR_write 4 #endif #ifndef __NR_read #define __NR_read 3 #endif #undef __NR_mmap #define __NR_mmap __NR_mmap2 long r[1]; void loop() { memset(r, -1, sizeof(r)); syscall(__NR_mmap, 0x20000000, 0xfff000, 0x3, 0x32, 0xffffffff, 0x0); memcpy((void*)0x20000000, "/dev/sg#", 9); r[0] = syz_open_dev(0x20000000, 0x0, 0x2); *(uint8_t*)0x205cbf70 = 0x0; *(uint8_t*)0x205cbf71 = 0x1; *(uint8_t*)0x205cbf72 = 0x7; *(uint8_t*)0x205cbf73 = 0x5; *(uint32_t*)0x205cbf74 = 0x0; *(uint32_t*)0x205cbf78 = 0x0; *(uint8_t*)0x205cbf7c = 0x3; *(uint8_t*)0x205cbf7d = 0x17; *(uint8_t*)0x205cbf7e = 0x5; *(uint8_t*)0x205cbf7f = 0x81; memcpy((void*)0x205cbf80, "\x60\xb4\x2b\xfe\x31\x4f\xfe\x14\xc8\xa5\x73\xd1", 12); *(uint8_t*)0x205cbf8c = 0x2; *(uint8_t*)0x205cbf8d = 0x4; *(uint8_t*)0x205cbf8e = 0x11; *(uint8_t*)0x205cbf8f = 0x8; *(uint32_t*)0x205cbf90 = 0xab94; *(uint8_t*)0x205cbf98 = 0x0; *(uint8_t*)0x205cbf99 = 0x40; *(uint8_t*)0x205cbf9a = 0xff; *(uint8_t*)0x205cbf9b = 0x2; *(uint8_t*)0x205cbf9c = 0x0; *(uint8_t*)0x205cbf9d = 0xa; *(uint8_t*)0x205cbf9e = 0x0; *(uint8_t*)0x205cbf9f = 0xff; *(uint32_t*)0x205cbfa0 = 0x1; *(uint8_t*)0x205cbfa8 = 0x0; *(uint8_t*)0x205cbfa9 = 0x7; *(uint8_t*)0x205cbfaa = 0x3; *(uint8_t*)0x205cbfab = 0x1; *(uint32_t*)0x205cbfac = 0x77359400; *(uint32_t*)0x205cbfb0 = 0x0; *(uint8_t*)0x205cbfb4 = 0x0; *(uint8_t*)0x205cbfb5 = 0xff; *(uint8_t*)0x205cbfb6 = 0xed; *(uint8_t*)0x205cbfb7 = 0x8; *(uint32_t*)0x205cbfb8 = 0x0; *(uint32_t*)0x205cbfbc = 0x20182f66; syscall(__NR_write, r[0], 0x205cbf70, 0x90); syscall(__NR_read, r[0], 0x205c5fc7, 0x0); } int main() { loop(); return 0; }