// https://syzkaller.appspot.com/bug?id=e2dc9aea0465d1eea101bb24cb463e2a7efe7d17
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <errno.h>
#include <errno.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 <sys/prctl.h>
#include <sys/prctl.h>
#include <sys/resource.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 <setjmp.h>
#include <signal.h>
#include <stdint.h>
#include <string.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);
}

static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* uctx)
{
  uintptr_t addr = (uintptr_t)info->si_addr;
  const uintptr_t prog_start = 1 << 20;
  const uintptr_t prog_end = 100 << 20;
  if (__atomic_load_n(&skip_segv, __ATOMIC_RELAXED) &&
      (addr < prog_start || addr > prog_end)) {
    _longjmp(segv_env, 1);
  }
  doexit(sig);
}

static void install_segv_handler()
{
  struct sigaction sa;

  memset(&sa, 0, sizeof(sa));
  sa.sa_handler = SIG_IGN;
  syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8);
  syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8);

  memset(&sa, 0, sizeof(sa));
  sa.sa_sigaction = segv_handler;
  sa.sa_flags = SA_NODEFER | SA_SIGINFO;
  sigaction(SIGSEGV, &sa, NULL);
  sigaction(SIGBUS, &sa, NULL);
}

#define NONFAILING(...)                                                \
  {                                                                    \
    __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST);               \
    if (_setjmp(segv_env) == 0) {                                      \
      __VA_ARGS__;                                                     \
    }                                                                  \
    __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST);               \
  }

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 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[2];
void test()
{
  memset(r, -1, sizeof(r));
  syscall(__NR_mmap, 0x20000000, 0xfff000, 0x3, 0x32, 0xffffffff, 0x0);
  r[0] = syscall(__NR_socket, 0x26, 0x5, 0x0);
  NONFAILING(*(uint16_t*)0x2019d000 = 0x26);
  NONFAILING(memcpy(
      (void*)0x2019d002,
      "\x73\x6b\x63\x69\x70\x68\x65\x72\x00\x00\x00\x00\x00\x00", 14));
  NONFAILING(*(uint32_t*)0x2019d010 = 0x0);
  NONFAILING(*(uint32_t*)0x2019d014 = 0xf);
  NONFAILING(memcpy((void*)0x2019d018,
                    "\x73\x61\x6c\x73\x61\x32\x30\x2d\x61\x73\x6d\x00"
                    "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    "\x00\x00\x00\x00",
                    64));
  syscall(__NR_bind, r[0], 0x2019d000, 0x58);
  NONFAILING(memcpy((void*)0x2097e000, "\xad\x56\xb6\xc5\x82\x0f\xae"
                                       "\xb9\x95\x29\x89\x92\xea\x54"
                                       "\xc7\xbe",
                    16));
  syscall(__NR_setsockopt, r[0], 0x117, 0x1, 0x2097e000, 0x10);
  r[1] = syscall(__NR_accept, r[0], 0x0, 0x0);
  NONFAILING(*(uint64_t*)0x205f0fc8 = 0x0);
  NONFAILING(*(uint32_t*)0x205f0fd0 = 0x0);
  NONFAILING(*(uint64_t*)0x205f0fd8 = 0x20331fc0);
  NONFAILING(*(uint64_t*)0x205f0fe0 = 0x1);
  NONFAILING(*(uint64_t*)0x205f0fe8 = 0x20f42fe8);
  NONFAILING(*(uint64_t*)0x205f0ff0 = 0x0);
  NONFAILING(*(uint32_t*)0x205f0ff8 = 0x0);
  NONFAILING(*(uint64_t*)0x20331fc0 = 0x20fa7f12);
  NONFAILING(*(uint64_t*)0x20331fc8 = 0xc0);
  NONFAILING(memcpy(
      (void*)0x20fa7f12,
      "\xb1\xc5\x41\x12\xaa\xd2\xc4\xc3\xc4\x95\x96\x2c\x2e\x68\xb6\x45"
      "\x5b\x79\xac\xca\xad\x45\xc6\x5a\x12\x70\xdc\xe2\x57\x77\x73\x50"
      "\xe2\xea\x63\x30\x0c\x04\xf8\xe3\xa2\x91\x8b\x71\x9d\x1a\x50\x94"
      "\x71\xe6\xae\xdf\x62\x10\xa5\x3e\x33\x97\xa5\x55\x7e\x14\x3f\xfc"
      "\x1c\x10\x6a\xf5\x45\x2f\x29\x6b\xef\xba\x34\xbf\xaa\xfb\x53\xdf"
      "\xd7\x2d\x8b\x11\x5f\x63\x3e\x4f\xd9\x94\x91\xf5\x7d\x21\x78\xac"
      "\x50\xc9\x49\x57\xae\x79\x07\x1a\xf2\xf5\x24\x81\x9d\x44\x73\x1d"
      "\x89\x2a\x83\xca\xe4\xa3\x78\x8b\x65\x81\x2a\xcc\x97\xdf\xf3\xb7"
      "\x9b\x11\x8d\x25\x5a\x16\x83\xd8\x72\xeb\x0a\xa9\xb3\x83\x16\x91"
      "\x7a\x00\x45\x6e\x29\xb0\xe7\x50\xcc\x67\xad\x01\x09\x81\xf6\xc8"
      "\x8c\x41\x87\x79\xa7\x72\xcf\x32\x9e\x8d\x6d\x95\x3e\xa8\x20\x0a"
      "\x7f\xe8\x5f\x7c\x8e\x23\x52\xd6\x07\x61\x82\x3b\xf1\xf4\xf3"
      "\x0f",
      192));
  syscall(__NR_sendmsg, r[1], 0x205f0fc8, 0x0);
  NONFAILING(*(uint64_t*)0x20b2f000 = 0x208e8000);
  NONFAILING(*(uint32_t*)0x20b2f008 = 0x10);
  NONFAILING(*(uint64_t*)0x20b2f010 = 0x20030fa0);
  NONFAILING(*(uint64_t*)0x20b2f018 = 0x2);
  NONFAILING(*(uint64_t*)0x20b2f020 = 0x20590000);
  NONFAILING(*(uint64_t*)0x20b2f028 = 0x0);
  NONFAILING(*(uint32_t*)0x20b2f030 = 0x0);
  NONFAILING(*(uint64_t*)0x20030fa0 = 0x2034df41);
  NONFAILING(*(uint64_t*)0x20030fa8 = 0xbf);
  NONFAILING(*(uint64_t*)0x20030fb0 = 0x200cd000);
  NONFAILING(*(uint64_t*)0x20030fb8 = 0x1a);
  syscall(__NR_recvmsg, r[1], 0x20b2f000, 0x0);
}

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