// https://syzkaller.appspot.com/bug?id=3c1f47967b7cbd399d3ba3e65f297a29aa1c5f92
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <endian.h>
#include <errno.h>
#include <errno.h>
#include <fcntl.h>
#include <sched.h>
#include <signal.h>
#include <signal.h>
#include <stdarg.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdio.h>
#include <stdio.h>
#include <string.h>
#include <sys/prctl.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

__attribute__((noreturn)) static void doexit(int status)
{
  volatile unsigned i;
  syscall(__NR_exit_group, status);
  for (i = 0;; i++) {
  }
}
#include <stdint.h>
#include <string.h>

const int kFailStatus = 67;
const int kRetryStatus = 69;

static void fail(const char* msg, ...)
{
  int e = errno;
  va_list args;
  va_start(args, msg);
  vfprintf(stderr, msg, args);
  va_end(args);
  fprintf(stderr, " (errno %d)\n", e);
  doexit((e == ENOMEM || e == EAGAIN) ? kRetryStatus : kFailStatus);
}

#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;                                                  \
  }

struct csum_inet {
  uint32_t acc;
};

static void csum_inet_init(struct csum_inet* csum)
{
  csum->acc = 0;
}

static void csum_inet_update(struct csum_inet* csum, const uint8_t* data,
                             size_t length)
{
  if (length == 0)
    return;

  size_t i;
  for (i = 0; i < length - 1; i += 2)
    csum->acc += *(uint16_t*)&data[i];

  if (length & 1)
    csum->acc += (uint16_t)data[length - 1];

  while (csum->acc > 0xffff)
    csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16);
}

static uint16_t csum_inet_digest(struct csum_inet* csum)
{
  return ~csum->acc;
}

static uint64_t current_time_ms()
{
  struct timespec ts;

  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    fail("clock_gettime failed");
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

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);
  }
}

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  setsid();

  struct rlimit rlim;
  rlim.rlim_cur = rlim.rlim_max = 128 << 20;
  setrlimit(RLIMIT_AS, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 8 << 20;
  setrlimit(RLIMIT_MEMLOCK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_FSIZE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_STACK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 0;
  setrlimit(RLIMIT_CORE, &rlim);

#define CLONE_NEWCGROUP 0x02000000

  unshare(CLONE_NEWNS);
  unshare(CLONE_NEWIPC);
  unshare(CLONE_NEWCGROUP);
  unshare(CLONE_NEWNET);
  unshare(CLONE_NEWUTS);
  unshare(CLONE_SYSVSEM);
}

static int do_sandbox_none(int executor_pid, bool enable_tun)
{
  unshare(CLONE_NEWPID);
  int pid = fork();
  if (pid < 0)
    fail("sandbox fork failed");
  if (pid)
    return pid;

  sandbox_common();

  loop();
  doexit(1);
}

static void test();

void loop()
{
  int iter;
  for (iter = 0;; iter++) {
    int pid = fork();
    if (pid < 0)
      fail("loop fork failed");
    if (pid == 0) {
      prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
      setpgrp();
      test();
      doexit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      int res = waitpid(-1, &status, __WALL | WNOHANG);
      if (res == pid)
        break;
      usleep(1000);
      if (current_time_ms() - start > 5 * 1000) {
        kill(-pid, SIGKILL);
        kill(pid, SIGKILL);
        while (waitpid(-1, &status, __WALL) != pid) {
        }
        break;
      }
    }
  }
}

long r[1];
void test()
{
  memset(r, -1, sizeof(r));
  syscall(__NR_mmap, 0x20000000, 0xfff000, 3, 0x32, -1, 0);
  memcpy((void*)0x208c8000, "/dev/sg#", 9);
  r[0] = syz_open_dev(0x208c8000, 0, 0x8002);
  *(uint8_t*)0x20ace000 = 2;
  *(uint8_t*)0x20ace001 = 0x83;
  *(uint16_t*)0x20ace002 = 0xfcc;
  *(uint16_t*)0x20ace004 = 1;
  *(uint16_t*)0x20ace006 = 4;
  *(uint16_t*)0x20ace008 = -1;
  STORE_BY_BITMASK(uint8_t, 0x20ace00a, 0x1e, 0, 4);
  STORE_BY_BITMASK(uint8_t, 0x20ace00a, 4, 4, 4);
  STORE_BY_BITMASK(uint8_t, 0x20ace00b, 1, 0, 2);
  STORE_BY_BITMASK(uint8_t, 0x20ace00b, 7, 2, 6);
  *(uint16_t*)0x20ace00c = htobe16(0x88);
  *(uint16_t*)0x20ace00e = htobe16(0x67);
  *(uint16_t*)0x20ace010 = htobe16(0);
  *(uint8_t*)0x20ace012 = 0x86;
  *(uint8_t*)0x20ace013 = 0x6e;
  *(uint16_t*)0x20ace014 = 0;
  *(uint8_t*)0x20ace016 = 0xac;
  *(uint8_t*)0x20ace017 = 0x14;
  *(uint8_t*)0x20ace018 = 0;
  *(uint8_t*)0x20ace019 = 0xbb;
  *(uint32_t*)0x20ace01a = htobe32(0);
  *(uint8_t*)0x20ace01e = 0x89;
  *(uint8_t*)0x20ace01f = 0x2b;
  *(uint8_t*)0x20ace020 = 0x1f;
  *(uint32_t*)0x20ace021 = htobe32(0xe0000001);
  *(uint32_t*)0x20ace025 = htobe32(0xe0000002);
  *(uint32_t*)0x20ace029 = htobe32(5);
  *(uint32_t*)0x20ace02d = htobe32(0xe0000002);
  *(uint8_t*)0x20ace031 = 0xac;
  *(uint8_t*)0x20ace032 = 0x14;
  *(uint8_t*)0x20ace033 = 0;
  *(uint8_t*)0x20ace034 = 0xbb;
  *(uint32_t*)0x20ace035 = htobe32(0);
  *(uint32_t*)0x20ace039 = htobe32(0x7f000001);
  *(uint32_t*)0x20ace03d = htobe32(0x7ff);
  *(uint32_t*)0x20ace041 = htobe32(0);
  *(uint32_t*)0x20ace045 = htobe32(0xe0000002);
  *(uint8_t*)0x20ace049 = 0x86;
  *(uint8_t*)0x20ace04a = 0x10;
  *(uint32_t*)0x20ace04b = htobe32(0x1f);
  *(uint8_t*)0x20ace04f = 0;
  *(uint8_t*)0x20ace050 = 2;
  *(uint8_t*)0x20ace051 = 5;
  *(uint8_t*)0x20ace052 = 2;
  *(uint8_t*)0x20ace053 = 0;
  *(uint8_t*)0x20ace054 = 2;
  *(uint8_t*)0x20ace055 = 0;
  *(uint8_t*)0x20ace056 = 2;
  *(uint8_t*)0x20ace057 = 7;
  *(uint8_t*)0x20ace058 = 2;
  *(uint8_t*)0x20ace059 = 7;
  *(uint8_t*)0x20ace05a = 0x27;
  *(uint8_t*)0x20ace05b = 5;
  *(uint8_t*)0x20ace05c = 0xac;
  *(uint8_t*)0x20ace05d = 0x14;
  *(uint8_t*)0x20ace05e = 0;
  *(uint8_t*)0x20ace05f = 0xbb;
  *(uint32_t*)0x20ace060 = htobe32(0x7f000001);
  *(uint32_t*)0x20ace064 = htobe32(0);
  *(uint8_t*)0x20ace068 = 0xac;
  *(uint8_t*)0x20ace069 = 0x14;
  *(uint8_t*)0x20ace06a = 0;
  *(uint8_t*)0x20ace06b = 0xbb;
  *(uint32_t*)0x20ace06c = htobe32(0x7f000001);
  *(uint32_t*)0x20ace070 = htobe32(-1);
  *(uint32_t*)0x20ace074 = htobe32(0x7f000001);
  *(uint32_t*)0x20ace078 = htobe32(9);
  *(uint32_t*)0x20ace07c = htobe32(0x3f);
  *(uint16_t*)0x20ace082 = htobe16(0x4e23);
  *(uint16_t*)0x20ace084 = htobe16(0x4e21);
  *(uint8_t*)0x20ace086 = 4;
  STORE_BY_BITMASK(uint8_t, 0x20ace087, 1, 0, 4);
  STORE_BY_BITMASK(uint8_t, 0x20ace087, 0x52, 4, 4);
  *(uint16_t*)0x20ace088 = 0;
  STORE_BY_BITMASK(uint8_t, 0x20ace08a, 0, 0, 1);
  STORE_BY_BITMASK(uint8_t, 0x20ace08a, 0, 1, 4);
  STORE_BY_BITMASK(uint8_t, 0x20ace08a, 0xce, 5, 3);
  memcpy((void*)0x20ace08b, "\x77\xfd\x93", 3);
  *(uint8_t*)0x20ace08e = 6;
  memcpy((void*)0x20ace08f, "\x41\x9e\x5f", 3);
  struct csum_inet csum_1;
  csum_inet_init(&csum_1);
  csum_inet_update(&csum_1, (const uint8_t*)0x20ace016, 4);
  csum_inet_update(&csum_1, (const uint8_t*)0x20ace01a, 4);
  uint16_t csum_1_chunk_2 = 0x2100;
  csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_2, 2);
  uint16_t csum_1_chunk_3 = 0x1000;
  csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_3, 2);
  csum_inet_update(&csum_1, (const uint8_t*)0x20ace082, 16);
  *(uint16_t*)0x20ace088 = csum_inet_digest(&csum_1);
  struct csum_inet csum_2;
  csum_inet_init(&csum_2);
  csum_inet_update(&csum_2, (const uint8_t*)0x20ace00a, 120);
  *(uint16_t*)0x20ace014 = csum_inet_digest(&csum_2);
  syscall(__NR_write, r[0], 0x20ace000, 0x92);
  *(uint64_t*)0x204f2000 = 0x207bc000;
  *(uint64_t*)0x204f2008 = 0;
  *(uint64_t*)0x204f2010 = 0x20180000;
  *(uint64_t*)0x204f2018 = 0;
  *(uint64_t*)0x204f2020 = 0x20035f1b;
  *(uint64_t*)0x204f2028 = 0;
  *(uint64_t*)0x204f2030 = 0x20523f39;
  *(uint64_t*)0x204f2038 = 0;
  *(uint64_t*)0x204f2040 = 0x203daf4b;
  *(uint64_t*)0x204f2048 = 0;
  *(uint64_t*)0x204f2050 = 0x20fa5000;
  *(uint64_t*)0x204f2058 = 0;
  *(uint64_t*)0x204f2060 = 0x20729000;
  *(uint64_t*)0x204f2068 = 0;
  *(uint64_t*)0x204f2070 = 0x2041fff8;
  *(uint64_t*)0x204f2078 = 0;
  *(uint64_t*)0x204f2080 = 0x20982000;
  *(uint64_t*)0x204f2088 = 0;
  *(uint64_t*)0x204f2090 = 0x20142000;
  *(uint64_t*)0x204f2098 = 1;
  syscall(__NR_readv, r[0], 0x204f2000, 0xa);
}

int main()
{
  for (;;) {
    int pid = do_sandbox_none(0, false);
    int status = 0;
    while (waitpid(pid, &status, __WALL) != pid) {
    }
  }
}