// https://syzkaller.appspot.com/bug?id=b8afb3d95297388287141f3721edb7a94b0280c5
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <setjmp.h>
#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <unistd.h>

static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* ctx)
{
  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);
  }
  exit(sig);
}

static void install_segv_handler(void)
{
  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);                       \
  }

uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0x0};

int main(void)
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  install_segv_handler();
  long res = 0;
  NONFAILING(memcpy((void*)0x20000180,
                    "\x73\x74\x61\x74\x09\xc0\xc2\xfe\xbc\xf9\xdf\x2d\xea\xc8"
                    "\xc1\x77\xff\x17\x12\x48\xe9\x11\x93\x51\x30\x49\xf8\x31"
                    "\x55\x0d\x6f\x7d\xe6\x6c\xf6\x37\xbd\xbf\x13\x11\x92\x0c"
                    "\x8a\x26\xed\xa4\xdc\xc3\x78\x3f\x9d\xb5\x11\x6b\x34\xd3"
                    "\x1b\x05\x12\xa5\x60\x8a\xaf\xf0\x1e\x79\x52\x34\x0c\xd6"
                    "\xfd\x00\x00\x00\x00",
                    75));
  res = syscall(__NR_openat, 0xffffff9c, 0x20000180, 0x275a, 0);
  if (res != -1)
    r[0] = res;
  NONFAILING(memcpy((void*)0x200005c0, "\xf7", 1));
  syscall(__NR_pwrite64, r[0], 0x200005c0, 1, 0);
  NONFAILING(memcpy((void*)0x20000000, "cgroup.controllers", 19));
  res = syscall(__NR_openat, 0xffffff9c, 0x20000000, 0x275a, 0);
  if (res != -1)
    r[1] = res;
  NONFAILING(sprintf((char*)0x20000100, "0x%016llx", (long long)0));
  syscall(__NR_write, r[1], 0x20000100, 0x12);
  NONFAILING(*(uint16_t*)0x20000080 = 0);
  NONFAILING(*(uint16_t*)0x20000082 = 0);
  NONFAILING(*(uint64_t*)0x20000088 = 0xffff);
  NONFAILING(*(uint64_t*)0x20000090 = 2);
  NONFAILING(*(uint32_t*)0x20000098 = 0);
  NONFAILING(*(uint32_t*)0x2000009c = 0);
  NONFAILING(*(uint32_t*)0x200000a0 = 0);
  NONFAILING(*(uint32_t*)0x200000a4 = 0);
  NONFAILING(*(uint32_t*)0x200000a8 = 0);
  NONFAILING(*(uint32_t*)0x200000ac = 0);
  syscall(__NR_ioctl, r[1], 0x40305828, 0x20000080);
  NONFAILING(*(uint16_t*)0x20000140 = 0);
  NONFAILING(*(uint16_t*)0x20000142 = 0);
  NONFAILING(*(uint64_t*)0x20000148 = 0x56cd4216);
  NONFAILING(*(uint64_t*)0x20000150 = 0x10001);
  NONFAILING(*(uint32_t*)0x20000158 = 0);
  NONFAILING(*(uint32_t*)0x2000015c = 0);
  NONFAILING(*(uint32_t*)0x20000160 = 0);
  NONFAILING(*(uint32_t*)0x20000164 = 0);
  NONFAILING(*(uint32_t*)0x20000168 = 0);
  NONFAILING(*(uint32_t*)0x2000016c = 0);
  syscall(__NR_ioctl, r[0], 0x40305828, 0x20000140);
  NONFAILING(memcpy(
      (void*)0x200000c0,
      "\x67\x72\x65\x30\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16));
  NONFAILING(*(uint32_t*)0x200000d0 = 0);
  res = syscall(__NR_ioctl, r[0], 0x8933, 0x200000c0);
  if (res != -1)
    NONFAILING(r[2] = *(uint32_t*)0x200000d0);
  NONFAILING(*(uint16_t*)0x20000280 = 0x11);
  NONFAILING(*(uint16_t*)0x20000282 = htobe16(0x10));
  NONFAILING(*(uint32_t*)0x20000284 = r[2]);
  NONFAILING(*(uint16_t*)0x20000288 = 1);
  NONFAILING(*(uint8_t*)0x2000028a = 6);
  NONFAILING(*(uint8_t*)0x2000028b = 6);
  NONFAILING(*(uint8_t*)0x2000028c = 0xaa);
  NONFAILING(*(uint8_t*)0x2000028d = 0xaa);
  NONFAILING(*(uint8_t*)0x2000028e = 0xaa);
  NONFAILING(*(uint8_t*)0x2000028f = 0xaa);
  NONFAILING(*(uint8_t*)0x20000290 = 0xaa);
  NONFAILING(*(uint8_t*)0x20000291 = 0xaa);
  NONFAILING(*(uint8_t*)0x20000292 = 0);
  NONFAILING(*(uint8_t*)0x20000293 = 0);
  syscall(__NR_bind, r[0], 0x20000280, 0x14);
  NONFAILING(*(uint32_t*)0x20000300 = 0);
  NONFAILING(*(uint32_t*)0x20000304 = r[1]);
  NONFAILING(*(uint64_t*)0x20000308 = 0);
  NONFAILING(*(uint64_t*)0x20000310 = 0xfffa931c);
  NONFAILING(*(uint64_t*)0x20000318 = 0);
  NONFAILING(*(uint64_t*)0x20000320 = 0);
  syscall(__NR_ioctl, r[0], 0xc028660f, 0x20000300);
  return 0;
}