// https://syzkaller.appspot.com/bug?id=2e5805cc4f92ef01367802388a98e191035150c2 // 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=*/0x3ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x400000000000ul, /*len=*/0x1000000ul, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x400001000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); const char* reason; (void)reason; intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } memcpy((void*)0x400000000040, "/dev/kvm\000", 9); res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x400000000040ul, /*flags=O_SYNC|O_EXCL*/ 0x101080, /*mode=*/0); if (res != -1) r[0] = res; res = syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xae01, /*type=*/0ul); if (res != -1) r[1] = res; *(uint32_t*)0x400000000400 = 0; *(uint32_t*)0x400000000404 = 1; *(uint64_t*)0x400000000408 = 0; *(uint64_t*)0x400000000410 = 0x2000; *(uint64_t*)0x400000000418 = 0x4000000aa000; syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0x4020ae46, /*arg=*/0x400000000400ul); res = syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0xae41, /*id=*/0ul); if (res != -1) r[2] = res; syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0xae80, /*arg=*/0ul); syscall(__NR_ioctl, /*fd=*/-1, /*cmd=*/0x4004f50d, /*arg=*/0ul); return 0; }