// https://syzkaller.appspot.com/bug?id=4330ceda236ce503797ca3e7469ae720ca6329cf
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/prctl.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#include <linux/genetlink.h>
#include <linux/netlink.h>

static void sleep_ms(uint64_t ms)
{
  usleep(ms * 1000);
}

static uint64_t current_time_ms(void)
{
  struct timespec ts;
  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    exit(1);
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

#define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off))
#define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len)               \
  *(type*)(addr) =                                                             \
      htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) |           \
            (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len))))

static bool write_file(const char* file, const char* what, ...)
{
  char buf[1024];
  va_list args;
  va_start(args, what);
  vsnprintf(buf, sizeof(buf), what, args);
  va_end(args);
  buf[sizeof(buf) - 1] = 0;
  int len = strlen(buf);
  int fd = open(file, O_WRONLY | O_CLOEXEC);
  if (fd == -1)
    return false;
  if (write(fd, buf, len) != len) {
    int err = errno;
    close(fd);
    errno = err;
    return false;
  }
  close(fd);
  return true;
}

static long syz_genetlink_get_family_id(volatile long name)
{
  char buf[512] = {0};
  struct nlmsghdr* hdr = (struct nlmsghdr*)buf;
  struct genlmsghdr* genlhdr = (struct genlmsghdr*)NLMSG_DATA(hdr);
  struct nlattr* attr = (struct nlattr*)(genlhdr + 1);
  hdr->nlmsg_len =
      sizeof(*hdr) + sizeof(*genlhdr) + sizeof(*attr) + GENL_NAMSIZ;
  hdr->nlmsg_type = GENL_ID_CTRL;
  hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
  genlhdr->cmd = CTRL_CMD_GETFAMILY;
  attr->nla_type = CTRL_ATTR_FAMILY_NAME;
  attr->nla_len = sizeof(*attr) + GENL_NAMSIZ;
  strncpy((char*)(attr + 1), (char*)name, GENL_NAMSIZ);
  struct iovec iov = {hdr, hdr->nlmsg_len};
  struct sockaddr_nl addr = {0};
  addr.nl_family = AF_NETLINK;
  int fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);
  if (fd == -1) {
    return -1;
  }
  struct msghdr msg = {&addr, sizeof(addr), &iov, 1, NULL, 0, 0};
  if (sendmsg(fd, &msg, 0) == -1) {
    close(fd);
    return -1;
  }
  ssize_t n = recv(fd, buf, sizeof(buf), 0);
  close(fd);
  if (n <= 0) {
    return -1;
  }
  if (hdr->nlmsg_type != GENL_ID_CTRL) {
    return -1;
  }
  for (; (char*)attr < buf + n;
       attr = (struct nlattr*)((char*)attr + NLMSG_ALIGN(attr->nla_len))) {
    if (attr->nla_type == CTRL_ATTR_FAMILY_ID)
      return *(uint16_t*)(attr + 1);
  }
  return -1;
}

static void kill_and_wait(int pid, int* status)
{
  kill(-pid, SIGKILL);
  kill(pid, SIGKILL);
  int i;
  for (i = 0; i < 100; i++) {
    if (waitpid(-1, status, WNOHANG | __WALL) == pid)
      return;
    usleep(1000);
  }
  DIR* dir = opendir("/sys/fs/fuse/connections");
  if (dir) {
    for (;;) {
      struct dirent* ent = readdir(dir);
      if (!ent)
        break;
      if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0)
        continue;
      char abort[300];
      snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort",
               ent->d_name);
      int fd = open(abort, O_WRONLY);
      if (fd == -1) {
        continue;
      }
      if (write(fd, abort, 1) < 0) {
      }
      close(fd);
    }
    closedir(dir);
  } else {
  }
  while (waitpid(-1, status, __WALL) != pid) {
  }
}

static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  write_file("/proc/self/oom_score_adj", "1000");
}

#define KMEMLEAK_FILE "/sys/kernel/debug/kmemleak"

static void setup_leak()
{
  if (!write_file(KMEMLEAK_FILE, "scan"))
    exit(1);
  sleep(5);
  if (!write_file(KMEMLEAK_FILE, "scan"))
    exit(1);
  if (!write_file(KMEMLEAK_FILE, "clear"))
    exit(1);
}

static void check_leaks(void)
{
  int fd = open(KMEMLEAK_FILE, O_RDWR);
  if (fd == -1)
    exit(1);
  uint64_t start = current_time_ms();
  if (write(fd, "scan", 4) != 4)
    exit(1);
  sleep(1);
  while (current_time_ms() - start < 4 * 1000)
    sleep(1);
  if (write(fd, "scan", 4) != 4)
    exit(1);
  static char buf[128 << 10];
  ssize_t n = read(fd, buf, sizeof(buf) - 1);
  if (n < 0)
    exit(1);
  int nleaks = 0;
  if (n != 0) {
    sleep(1);
    if (write(fd, "scan", 4) != 4)
      exit(1);
    if (lseek(fd, 0, SEEK_SET) < 0)
      exit(1);
    n = read(fd, buf, sizeof(buf) - 1);
    if (n < 0)
      exit(1);
    buf[n] = 0;
    char* pos = buf;
    char* end = buf + n;
    while (pos < end) {
      char* next = strstr(pos + 1, "unreferenced object");
      if (!next)
        next = end;
      char prev = *next;
      *next = 0;
      fprintf(stderr, "BUG: memory leak\n%s\n", pos);
      *next = prev;
      pos = next;
      nleaks++;
    }
  }
  if (write(fd, "clear", 5) != 5)
    exit(1);
  close(fd);
  if (nleaks)
    exit(1);
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter;
  for (iter = 0;; iter++) {
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      if (current_time_ms() - start < 5 * 1000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    check_leaks();
  }
}

uint64_t r[2] = {0xffffffffffffffff, 0x0};

void execute_one(void)
{
  intptr_t res = 0;
  res = syscall(__NR_socket, 0x10ul, 3ul, 0x10);
  if (res != -1)
    r[0] = res;
  memcpy((void*)0x20000440, "ethtool\000", 8);
  res = syz_genetlink_get_family_id(0x20000440);
  if (res != -1)
    r[1] = res;
  *(uint64_t*)0x20000000 = 0;
  *(uint32_t*)0x20000008 = 0;
  *(uint64_t*)0x20000010 = 0x20000740;
  *(uint64_t*)0x20000740 = 0x200004c0;
  *(uint32_t*)0x200004c0 = 0x17c;
  *(uint16_t*)0x200004c4 = r[1];
  *(uint16_t*)0x200004c6 = 0x703;
  *(uint32_t*)0x200004c8 = 0x70bd2d;
  *(uint32_t*)0x200004cc = 0;
  *(uint8_t*)0x200004d0 = 4;
  *(uint8_t*)0x200004d1 = 0;
  *(uint16_t*)0x200004d2 = 0;
  *(uint16_t*)0x200004d4 = 0x14;
  STORE_BY_BITMASK(uint16_t, , 0x200004d6, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200004d7, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200004d7, 1, 7, 1);
  *(uint16_t*)0x200004d8 = 8;
  *(uint16_t*)0x200004da = 3;
  *(uint32_t*)0x200004dc = 0;
  *(uint16_t*)0x200004e0 = 8;
  *(uint16_t*)0x200004e2 = 1;
  *(uint32_t*)0x200004e4 = 0;
  *(uint16_t*)0x200004e8 = 0x34;
  STORE_BY_BITMASK(uint16_t, , 0x200004ea, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200004eb, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200004eb, 1, 7, 1);
  *(uint16_t*)0x200004ec = 0xc;
  STORE_BY_BITMASK(uint16_t, , 0x200004ee, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200004ef, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200004ef, 1, 7, 1);
  *(uint16_t*)0x200004f0 = 8;
  *(uint16_t*)0x200004f2 = 1;
  *(uint32_t*)0x200004f4 = 3;
  *(uint16_t*)0x200004f8 = 0x24;
  STORE_BY_BITMASK(uint16_t, , 0x200004fa, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200004fb, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200004fb, 1, 7, 1);
  *(uint16_t*)0x200004fc = 8;
  *(uint16_t*)0x200004fe = 1;
  *(uint32_t*)0x20000500 = 7;
  *(uint16_t*)0x20000504 = 8;
  *(uint16_t*)0x20000506 = 1;
  *(uint32_t*)0x20000508 = 3;
  *(uint16_t*)0x2000050c = 8;
  *(uint16_t*)0x2000050e = 1;
  *(uint32_t*)0x20000510 = 4;
  *(uint16_t*)0x20000514 = 8;
  *(uint16_t*)0x20000516 = 1;
  *(uint32_t*)0x20000518 = 0;
  *(uint16_t*)0x2000051c = 0x98;
  STORE_BY_BITMASK(uint16_t, , 0x2000051e, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000051f, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000051f, 1, 7, 1);
  *(uint16_t*)0x20000520 = 0xc;
  STORE_BY_BITMASK(uint16_t, , 0x20000522, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000523, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000523, 1, 7, 1);
  *(uint16_t*)0x20000524 = 8;
  *(uint16_t*)0x20000526 = 1;
  *(uint32_t*)0x20000528 = 1;
  *(uint16_t*)0x2000052c = 0xc;
  STORE_BY_BITMASK(uint16_t, , 0x2000052e, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000052f, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000052f, 1, 7, 1);
  *(uint16_t*)0x20000530 = 8;
  *(uint16_t*)0x20000532 = 1;
  *(uint32_t*)0x20000534 = 4;
  *(uint16_t*)0x20000538 = 0x14;
  STORE_BY_BITMASK(uint16_t, , 0x2000053a, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000053b, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000053b, 1, 7, 1);
  *(uint16_t*)0x2000053c = 8;
  *(uint16_t*)0x2000053e = 1;
  *(uint32_t*)0x20000540 = 1;
  *(uint16_t*)0x20000544 = 8;
  *(uint16_t*)0x20000546 = 1;
  *(uint32_t*)0x20000548 = 0;
  *(uint16_t*)0x2000054c = 0x2c;
  STORE_BY_BITMASK(uint16_t, , 0x2000054e, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000054f, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000054f, 1, 7, 1);
  *(uint16_t*)0x20000550 = 8;
  *(uint16_t*)0x20000552 = 1;
  *(uint32_t*)0x20000554 = 1;
  *(uint16_t*)0x20000558 = 8;
  *(uint16_t*)0x2000055a = 1;
  *(uint32_t*)0x2000055c = 2;
  *(uint16_t*)0x20000560 = 8;
  *(uint16_t*)0x20000562 = 1;
  *(uint32_t*)0x20000564 = 7;
  *(uint16_t*)0x20000568 = 8;
  *(uint16_t*)0x2000056a = 1;
  *(uint32_t*)0x2000056c = 4;
  *(uint16_t*)0x20000570 = 8;
  *(uint16_t*)0x20000572 = 1;
  *(uint32_t*)0x20000574 = 6;
  *(uint16_t*)0x20000578 = 0x3c;
  STORE_BY_BITMASK(uint16_t, , 0x2000057a, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000057b, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000057b, 1, 7, 1);
  *(uint16_t*)0x2000057c = 8;
  *(uint16_t*)0x2000057e = 1;
  *(uint32_t*)0x20000580 = 1;
  *(uint16_t*)0x20000584 = 8;
  *(uint16_t*)0x20000586 = 1;
  *(uint32_t*)0x20000588 = 0;
  *(uint16_t*)0x2000058c = 8;
  *(uint16_t*)0x2000058e = 1;
  *(uint32_t*)0x20000590 = 6;
  *(uint16_t*)0x20000594 = 8;
  *(uint16_t*)0x20000596 = 1;
  *(uint32_t*)0x20000598 = 8;
  *(uint16_t*)0x2000059c = 8;
  *(uint16_t*)0x2000059e = 1;
  *(uint32_t*)0x200005a0 = 4;
  *(uint16_t*)0x200005a4 = 8;
  *(uint16_t*)0x200005a6 = 1;
  *(uint32_t*)0x200005a8 = 2;
  *(uint16_t*)0x200005ac = 8;
  *(uint16_t*)0x200005ae = 1;
  *(uint32_t*)0x200005b0 = 0;
  *(uint16_t*)0x200005b4 = 4;
  *(uint16_t*)0x200005b6 = 3;
  *(uint16_t*)0x200005b8 = 0x40;
  STORE_BY_BITMASK(uint16_t, , 0x200005ba, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200005bb, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200005bb, 1, 7, 1);
  *(uint16_t*)0x200005bc = 0x3c;
  STORE_BY_BITMASK(uint16_t, , 0x200005be, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200005bf, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200005bf, 1, 7, 1);
  *(uint16_t*)0x200005c0 = 8;
  *(uint16_t*)0x200005c2 = 1;
  *(uint32_t*)0x200005c4 = 0;
  *(uint16_t*)0x200005c8 = 8;
  *(uint16_t*)0x200005ca = 1;
  *(uint32_t*)0x200005cc = 7;
  *(uint16_t*)0x200005d0 = 8;
  *(uint16_t*)0x200005d2 = 1;
  *(uint32_t*)0x200005d4 = 8;
  *(uint16_t*)0x200005d8 = 8;
  *(uint16_t*)0x200005da = 1;
  *(uint32_t*)0x200005dc = 2;
  *(uint16_t*)0x200005e0 = 8;
  *(uint16_t*)0x200005e2 = 1;
  *(uint32_t*)0x200005e4 = 0;
  *(uint16_t*)0x200005e8 = 8;
  *(uint16_t*)0x200005ea = 1;
  *(uint32_t*)0x200005ec = 5;
  *(uint16_t*)0x200005f0 = 8;
  *(uint16_t*)0x200005f2 = 1;
  *(uint32_t*)0x200005f4 = 5;
  *(uint16_t*)0x200005f8 = 0x44;
  STORE_BY_BITMASK(uint16_t, , 0x200005fa, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200005fb, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200005fb, 1, 7, 1);
  *(uint16_t*)0x200005fc = 0xc;
  STORE_BY_BITMASK(uint16_t, , 0x200005fe, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200005ff, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200005ff, 1, 7, 1);
  *(uint16_t*)0x20000600 = 8;
  *(uint16_t*)0x20000602 = 1;
  *(uint32_t*)0x20000604 = 1;
  *(uint16_t*)0x20000608 = 0x34;
  STORE_BY_BITMASK(uint16_t, , 0x2000060a, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000060b, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000060b, 1, 7, 1);
  *(uint16_t*)0x2000060c = 8;
  *(uint16_t*)0x2000060e = 1;
  *(uint32_t*)0x20000610 = 5;
  *(uint16_t*)0x20000614 = 8;
  *(uint16_t*)0x20000616 = 1;
  *(uint32_t*)0x20000618 = 8;
  *(uint16_t*)0x2000061c = 8;
  *(uint16_t*)0x2000061e = 1;
  *(uint32_t*)0x20000620 = 5;
  *(uint16_t*)0x20000624 = 8;
  *(uint16_t*)0x20000626 = 1;
  *(uint32_t*)0x20000628 = 8;
  *(uint16_t*)0x2000062c = 8;
  *(uint16_t*)0x2000062e = 1;
  *(uint32_t*)0x20000630 = 4;
  *(uint16_t*)0x20000634 = 8;
  *(uint16_t*)0x20000636 = 1;
  *(uint32_t*)0x20000638 = 0x3213aa49;
  *(uint64_t*)0x20000748 = 0x17c;
  *(uint64_t*)0x20000018 = 1;
  *(uint64_t*)0x20000020 = 0;
  *(uint64_t*)0x20000028 = 0;
  *(uint32_t*)0x20000030 = 0x4004;
  syscall(__NR_sendmsg, r[0], 0x20000000ul, 0ul);
}
int main(void)
{
  syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  setup_leak();
  loop();
  return 0;
}