// https://syzkaller.appspot.com/bug?id=e4ef56b03491445f0a1cca5af5c308cf08bc7ac1
// 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>

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[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff};

int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  res = -1;
  res = syz_open_procfs(/*pid=*/-1, /*file=*/0);
  if (res != -1)
    r[0] = res;
  syscall(__NR_bind, /*fd=*/(intptr_t)-1, /*addr=*/0ul, /*addrlen=*/0ul);
  res = syscall(__NR_socket, /*domain=*/0xaul, /*type=SOCK_SEQPACKET*/ 5ul,
                /*proto=*/0);
  if (res != -1)
    r[1] = res;
  syscall(__NR_bind, /*fd=*/r[1], /*addr=*/0ul, /*addrlen=*/0ul);
  memcpy((void*)0x200000000000, "/dev/nullb0\000", 12);
  res = syscall(
      __NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x200000000000ul,
      /*flags=O_TRUNC|O_NOFOLLOW|O_DIRECT|O_CREAT|O_CLOEXEC|0x2*/ 0xa4242,
      /*mode=*/0);
  if (res != -1)
    r[2] = res;
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0xb36000ul,
          /*prot=PROT_GROWSUP|PROT_WRITE|PROT_READ|PROT_EXEC*/ 0x2000007ul,
          /*flags=MAP_STACK|MAP_POPULATE|MAP_NONBLOCK|MAP_FIXED|0x1*/ 0x38011ul,
          /*fd=*/r[2], /*offset=*/0ul);
  syscall(__NR_madvise, /*addr=*/0x200000000000ul, /*len=*/0xc00000ul,
          /*advice=MADV_HUGEPAGE*/ 0xeul);
  syscall(__NR_preadv, /*fd=*/r[0], /*vec=*/0ul, /*vlen=*/0ul,
          /*off_low=*/0xfffffff9, /*off_high=*/8);
  res = syscall(__NR_socket, /*domain=*/0x15ul, /*type=*/5ul, /*proto=*/0);
  if (res != -1)
    r[3] = res;
  *(uint16_t*)0x200000000040 = 2;
  *(uint16_t*)0x200000000042 = htobe16(0);
  *(uint32_t*)0x200000000044 = htobe32(0x7f000001);
  syscall(__NR_bind, /*fd=*/r[3], /*addr=*/0x200000000040ul,
          /*addrlen=*/0x10ul);
  *(uint64_t*)0x200000000280 = 0x200000000000;
  *(uint16_t*)0x200000000000 = 2;
  *(uint16_t*)0x200000000002 = htobe16(0x10);
  *(uint32_t*)0x200000000004 = htobe32(0xa0100fd);
  *(uint32_t*)0x200000000288 = 0x10;
  *(uint64_t*)0x200000000290 = 0;
  *(uint64_t*)0x200000000298 = 0;
  *(uint64_t*)0x2000000002a0 = 0x200000000380;
  *(uint64_t*)0x200000000380 = 0x58;
  *(uint32_t*)0x200000000388 = 0x114;
  *(uint32_t*)0x20000000038c = 9;
  *(uint32_t*)0x200000000390 = 6;
  *(uint32_t*)0x200000000394 = 2;
  *(uint64_t*)0x200000000398 = 0x2000000002c0;
  *(uint64_t*)0x2000000002c0 = 0xfffffffffffffffd;
  *(uint64_t*)0x2000000003a0 = 0;
  *(uint64_t*)0x2000000003a8 = 4;
  *(uint64_t*)0x2000000003b0 = 0x7fff;
  *(uint64_t*)0x2000000003b8 = 3;
  *(uint64_t*)0x2000000003c0 = 0xf;
  *(uint64_t*)0x2000000003c8 = 0x31;
  *(uint64_t*)0x2000000003d0 = 2;
  *(uint64_t*)0x2000000002a8 = 0x58;
  *(uint32_t*)0x2000000002b0 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[3], /*msg=*/0x200000000280ul, /*f=*/0ul);
  syscall(__NR_socket, /*domain=*/2ul, /*type=SOCK_SEQPACKET*/ 5ul,
          /*proto=*/0x84);
  syscall(__NR_bind, /*fd=*/(intptr_t)-1, /*addr=*/0ul, /*addrlen=*/0ul);
  syscall(__NR_sendto, /*fd=*/(intptr_t)-1, /*buf=*/0ul, /*len=*/0ul,
          /*f=MSG_NOSIGNAL*/ 0x4000ul, /*addr=*/0ul, /*addrlen=*/0ul);
  syz_open_procfs(/*pid=*/-1, /*file=*/0);
  syscall(__NR_bind, /*fd=*/(intptr_t)-1, /*addr=*/0ul, /*addrlen=*/0ul);
  syscall(__NR_socket, /*domain=*/0xaul, /*type=SOCK_SEQPACKET*/ 5ul,
          /*proto=*/0);
  syscall(__NR_bind, /*fd=*/r[1], /*addr=*/0ul, /*addrlen=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0xb36000ul,
          /*prot=PROT_GROWSUP|PROT_WRITE|PROT_READ|PROT_EXEC*/ 0x2000007ul,
          /*flags=MAP_STACK|MAP_POPULATE|MAP_NONBLOCK|MAP_FIXED|0x1*/ 0x38011ul,
          /*fd=*/r[2], /*offset=*/0ul);
  syscall(__NR_preadv, /*fd=*/r[0], /*vec=*/0ul, /*vlen=*/0ul,
          /*off_low=*/0xfffffff9, /*off_high=*/8);
  syscall(__NR_socket, /*domain=*/0x15ul, /*type=*/5ul, /*proto=*/0);
  syscall(__NR_bind, /*fd=*/r[3], /*addr=*/0ul, /*addrlen=*/0ul);
  return 0;
}