// https://syzkaller.appspot.com/bug?id=8fc4ac2bd63ac049e7a369676b65f047f65d7736 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); const char* reason; (void)reason; intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } res = syscall(__NR_socket, /*domain=*/2ul, /*type=*/1ul, /*proto=*/0); if (res != -1) r[0] = res; memcpy((void*)0x200000000000, "/dev/kvm\000", 9); res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x200000000000ul, /*flags=O_NOFOLLOW*/ 0x20000, /*mode=*/0); if (res != -1) r[1] = res; res = syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0xae01, /*type=*/0ul); if (res != -1) r[2] = res; syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0xae41, /*id=*/3ul); *(uint32_t*)0x200000000400 = 3; *(uint32_t*)0x200000000404 = r[0]; *(uint32_t*)0x200000000408 = -1; memset((void*)0x20000000040c, 0, 12); syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0x400caed0, /*arg=*/0x200000000400ul); return 0; }