// https://syzkaller.appspot.com/bug?id=0db3a79a06a7c545c6aca0cb3ff263e57837ab3b
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

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

#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 long syz_open_procfs(volatile long a0, volatile long a1)
{
  char buf[128];
  memset(buf, 0, sizeof(buf));
  if (a0 == 0) {
    snprintf(buf, sizeof(buf), "/proc/self/%s", (char*)a1);
  } else if (a0 == -1) {
    snprintf(buf, sizeof(buf), "/proc/thread-self/%s", (char*)a1);
  } else {
    snprintf(buf, sizeof(buf), "/proc/self/task/%d/%s", (int)a0, (char*)a1);
  }
  int fd = open(buf, O_RDWR);
  if (fd == -1)
    fd = open(buf, O_RDONLY);
  return fd;
}

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

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);
  intptr_t res = 0;
  memcpy((void*)0x20000100, "syscall\000", 8);
  syz_open_procfs(0, 0x20000100);
  res = syscall(__NR_socket, 0x10ul, 3ul, 0);
  if (res != -1)
    r[0] = res;
  res = syscall(__NR_socket, 1ul, 0x803ul, 0);
  if (res != -1)
    r[1] = res;
  *(uint32_t*)0x200002c0 = 0x14;
  res = syscall(__NR_getsockname, r[1], 0x20000100ul, 0x200002c0ul);
  if (res != -1)
    r[2] = *(uint32_t*)0x20000104;
  *(uint64_t*)0x20000080 = 0;
  *(uint32_t*)0x20000088 = 0;
  *(uint64_t*)0x20000090 = 0x20000000;
  *(uint64_t*)0x20000000 = 0x20000300;
  *(uint32_t*)0x20000300 = 0x9c;
  *(uint16_t*)0x20000304 = 0x10;
  *(uint16_t*)0x20000306 = 0x401;
  *(uint32_t*)0x20000308 = 0x70bd27;
  *(uint32_t*)0x2000030c = 0x25dfdbfd;
  *(uint8_t*)0x20000310 = 0;
  *(uint8_t*)0x20000311 = 0;
  *(uint16_t*)0x20000312 = 0;
  *(uint32_t*)0x20000314 = 0;
  *(uint32_t*)0x20000318 = 0;
  *(uint32_t*)0x2000031c = 0;
  *(uint16_t*)0x20000320 = 0x74;
  STORE_BY_BITMASK(uint16_t, , 0x20000322, 0x12, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000323, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000323, 1, 7, 1);
  *(uint16_t*)0x20000324 = 0xe;
  *(uint16_t*)0x20000326 = 1;
  memcpy((void*)0x20000328, "ip6erspan\000", 10);
  *(uint16_t*)0x20000334 = 0x60;
  STORE_BY_BITMASK(uint16_t, , 0x20000336, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000337, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000337, 1, 7, 1);
  *(uint16_t*)0x20000338 = 8;
  *(uint16_t*)0x2000033a = 0x15;
  *(uint32_t*)0x2000033c = 0x82601;
  *(uint16_t*)0x20000340 = 6;
  *(uint16_t*)0x20000342 = 0xf;
  *(uint16_t*)0x20000344 = 2;
  *(uint16_t*)0x20000348 = 4;
  *(uint16_t*)0x2000034a = 0x12;
  *(uint16_t*)0x2000034c = 8;
  *(uint16_t*)0x2000034e = 0xc;
  *(uint32_t*)0x20000350 = 9;
  *(uint16_t*)0x20000354 = 5;
  *(uint16_t*)0x20000356 = 0x16;
  *(uint8_t*)0x20000358 = 1;
  *(uint16_t*)0x2000035c = 8;
  *(uint16_t*)0x2000035e = 0x15;
  *(uint32_t*)0x20000360 = 0x9bde8;
  *(uint16_t*)0x20000364 = 1;
  *(uint16_t*)0x20000366 = 6;
  memcpy((void*)0x20000368,
         " \001\000\000\000\000\000\000\000\000\000\000\000\000\000\002", 16);
  *(uint16_t*)0x20000378 = 0x14;
  *(uint16_t*)0x2000037a = 6;
  *(uint64_t*)0x2000037c = htobe64(0);
  *(uint64_t*)0x20000384 = htobe64(1);
  *(uint16_t*)0x2000038c = 5;
  *(uint16_t*)0x2000038e = 8;
  *(uint8_t*)0x20000390 = 0xa9;
  *(uint16_t*)0x20000394 = 8;
  *(uint16_t*)0x20000396 = 3;
  *(uint32_t*)0x20000398 = r[2];
  *(uint64_t*)0x20000008 = 0x9c;
  *(uint64_t*)0x20000098 = 1;
  *(uint64_t*)0x200000a0 = 0;
  *(uint64_t*)0x200000a8 = 0;
  *(uint32_t*)0x200000b0 = 0;
  syscall(__NR_sendmsg, r[0], 0x20000080ul, 0x20001000ul);
  return 0;
}