// https://syzkaller.appspot.com/bug?id=e43426047c6a30d7adbeed0f6fd67c3192490998
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#ifndef __NR_mmap
#define __NR_mmap 192
#endif
#ifndef __NR_openat
#define __NR_openat 295
#endif
#ifndef __NR_sendmsg
#define __NR_sendmsg 370
#endif
#ifndef __NR_write
#define __NR_write 4
#endif
#undef __NR_mmap
#define __NR_mmap __NR_mmap2

static void sleep_ms(uint64_t ms)
{
  usleep(ms * 1000);
}

static uint64_t current_time_ms(void)
{
  struct timespec ts;
  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    exit(1);
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

#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 bool write_file(const char* file, const char* what, ...)
{
  char buf[1024];
  va_list args;
  va_start(args, what);
  vsnprintf(buf, sizeof(buf), what, args);
  va_end(args);
  buf[sizeof(buf) - 1] = 0;
  int len = strlen(buf);
  int fd = open(file, O_WRONLY | O_CLOEXEC);
  if (fd == -1)
    return false;
  if (write(fd, buf, len) != len) {
    int err = errno;
    close(fd);
    errno = err;
    return false;
  }
  close(fd);
  return true;
}

static void kill_and_wait(int pid, int* status)
{
  kill(-pid, SIGKILL);
  kill(pid, SIGKILL);
  for (int i = 0; i < 100; i++) {
    if (waitpid(-1, status, WNOHANG | __WALL) == pid)
      return;
    usleep(1000);
  }
  DIR* dir = opendir("/sys/fs/fuse/connections");
  if (dir) {
    for (;;) {
      struct dirent* ent = readdir(dir);
      if (!ent)
        break;
      if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0)
        continue;
      char abort[300];
      snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort",
               ent->d_name);
      int fd = open(abort, O_WRONLY);
      if (fd == -1) {
        continue;
      }
      if (write(fd, abort, 1) < 0) {
      }
      close(fd);
    }
    closedir(dir);
  } else {
  }
  while (waitpid(-1, status, __WALL) != pid) {
  }
}

static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  write_file("/proc/self/oom_score_adj", "1000");
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  openat$uhid arguments: [
  //    fd: const = 0xffffffffffffff9c (4 bytes)
  //    file: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 75 68 69 64 00} (length 0xa)
  //    }
  //    flags: uhid_open_flags = 0x2 (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns fd_uhid
  memcpy((void*)0x80000000, "/dev/uhid\000", 10);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x80000000,
                /*flags=O_RDWR*/ 2, /*mode=*/0);
  if (res != -1)
    r[0] = res;
  //  sendmsg$IPSET_CMD_CREATE arguments: [
  //    fd: sock_nl_netfilter (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_netfilter_t[NFNL_SUBSYS_IPSET,
  //    IPSET_CMD_CREATE, ip_set_create_policy]]] {
  //      msghdr_netlink[netlink_msg_netfilter_t[NFNL_SUBSYS_IPSET,
  //      IPSET_CMD_CREATE, ip_set_create_policy]] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_netfilter_t[NFNL_SUBSYS_IPSET,
  //        IPSET_CMD_CREATE, ip_set_create_policy]]] {
  //          iovec[in, netlink_msg_netfilter_t[NFNL_SUBSYS_IPSET,
  //          IPSET_CMD_CREATE, ip_set_create_policy]] {
  //            addr: ptr[in, netlink_msg_netfilter_tt[NFNL_SUBSYS_IPSET,
  //            IPSET_CMD_CREATE, array[ip_set_create_policy]]] {
  //              netlink_msg_netfilter_tt[NFNL_SUBSYS_IPSET, IPSET_CMD_CREATE,
  //              array[ip_set_create_policy]] {
  //                len: len = 0x58 (4 bytes)
  //                type: const = 0x2 (1 bytes)
  //                subsys: const = 0x6 (1 bytes)
  //                flags: netlink_netfilter_msg_flags = 0x801 (2 bytes)
  //                seq: const = 0x0 (4 bytes)
  //                pid: const = 0x0 (4 bytes)
  //                hdr: nfgenmsg {
  //                  nfgen_family: nfproto = 0x0 (1 bytes)
  //                  version: const = 0x0 (1 bytes)
  //                  res_id: int16be = 0x2 (2 bytes)
  //                }
  //                attrs: array[ip_set_create_policy] {
  //                  union ip_set_create_policy {
  //                    IPSET_ATTR_DATA: nlattr_tt[const[IPSET_ATTR_DATA,
  //                    int16:14], 0, 1, array[ip_set_type_create_policy]] {
  //                      nla_len: offsetof = 0xc (2 bytes)
  //                      nla_type: const = 0x7 (1 bytes)
  //                      NLA_F_NET_BYTEORDER: const = 0x0 (0 bytes)
  //                      NLA_F_NESTED: const = 0x1 (1 bytes)
  //                      payload: array[ip_set_type_create_policy] {
  //                        union ip_set_type_create_policy {
  //                          IPSET_ATTR_BUCKETSIZE:
  //                          nlattr_t[const[IPSET_ATTR_BUCKETSIZE, int16],
  //                          int8] {
  //                            nla_len: offsetof = 0x5 (2 bytes)
  //                            nla_type: const = 0x15 (2 bytes)
  //                            payload: int8 = 0x7 (1 bytes)
  //                            size: buffer: {} (length 0x0)
  //                            pad = 0x0 (3 bytes)
  //                          }
  //                        }
  //                      }
  //                      size: buffer: {} (length 0x0)
  //                    }
  //                  }
  //                  union ip_set_create_policy {
  //                    IPSET_ATTR_PROTOCOL: nlattr_t[const[IPSET_ATTR_PROTOCOL,
  //                    int16], const[IPSET_PROTOCOL, int8]] {
  //                      nla_len: offsetof = 0x5 (2 bytes)
  //                      nla_type: const = 0x1 (2 bytes)
  //                      payload: const = 0x6 (1 bytes)
  //                      size: buffer: {} (length 0x0)
  //                      pad = 0x0 (3 bytes)
  //                    }
  //                  }
  //                  union ip_set_create_policy {
  //                    IPSET_ATTR_FAMILY: nlattr_t[const[IPSET_ATTR_FAMILY,
  //                    int16], flags[nfproto, int8]] {
  //                      nla_len: offsetof = 0x5 (2 bytes)
  //                      nla_type: const = 0x5 (2 bytes)
  //                      payload: nfproto = 0xa (1 bytes)
  //                      size: buffer: {} (length 0x0)
  //                      pad = 0x0 (3 bytes)
  //                    }
  //                  }
  //                  union ip_set_create_policy {
  //                    IPSET_ATTR_REVISION: nlattr_t[const[IPSET_ATTR_REVISION,
  //                    int16], int8[0:3]] {
  //                      nla_len: offsetof = 0x5 (2 bytes)
  //                      nla_type: const = 0x4 (2 bytes)
  //                      payload: int8 = 0x0 (1 bytes)
  //                      size: buffer: {} (length 0x0)
  //                      pad = 0x0 (3 bytes)
  //                    }
  //                  }
  //                  union ip_set_create_policy {
  //                    IPSET_ATTR_SETNAME: nlattr_t[const[IPSET_ATTR_SETNAME,
  //                    int16], string[ipset_name]] {
  //                      nla_len: offsetof = 0x9 (2 bytes)
  //                      nla_type: const = 0x2 (2 bytes)
  //                      payload: buffer: {73 79 7a 30 00} (length 0x5)
  //                      size: buffer: {} (length 0x0)
  //                      pad = 0x0 (3 bytes)
  //                    }
  //                  }
  //                  union ip_set_create_policy {
  //                    IPSET_ATTR_TYPENAME: nlattr_t[const[IPSET_ATTR_TYPENAME,
  //                    int16], string[ipset_type]] {
  //                      nla_len: offsetof = 0x13 (2 bytes)
  //                      nla_type: const = 0x3 (2 bytes)
  //                      payload: buffer: {68 61 73 68 3a 6e 65 74 2c 69 66 61
  //                      63 65 00} (length 0xf) size: buffer: {} (length 0x0)
  //                    }
  //                  }
  //                }
  //              }
  //            }
  //            len: len = 0x58 (4 bytes)
  //          }
  //        }
  //        vlen: const = 0x1 (4 bytes)
  //        ctrl: const = 0x0 (4 bytes)
  //        ctrllen: const = 0x0 (4 bytes)
  //        f: send_flags = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x80 (4 bytes)
  //  ]
  *(uint32_t*)0x800000c0 = 0;
  *(uint32_t*)0x800000c4 = 0;
  *(uint32_t*)0x800000c8 = 0x800001c0;
  *(uint32_t*)0x800001c0 = 0x800002c0;
  *(uint32_t*)0x800002c0 = 0x58;
  *(uint8_t*)0x800002c4 = 2;
  *(uint8_t*)0x800002c5 = 6;
  *(uint16_t*)0x800002c6 = 0x801;
  *(uint32_t*)0x800002c8 = 0;
  *(uint32_t*)0x800002cc = 0;
  *(uint8_t*)0x800002d0 = 0;
  *(uint8_t*)0x800002d1 = 0;
  *(uint16_t*)0x800002d2 = htobe16(2);
  *(uint16_t*)0x800002d4 = 0xc;
  STORE_BY_BITMASK(uint16_t, , 0x800002d6, 7, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x800002d7, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x800002d7, 1, 7, 1);
  *(uint16_t*)0x800002d8 = 5;
  *(uint16_t*)0x800002da = 0x15;
  *(uint8_t*)0x800002dc = 7;
  *(uint16_t*)0x800002e0 = 5;
  *(uint16_t*)0x800002e2 = 1;
  *(uint8_t*)0x800002e4 = 6;
  *(uint16_t*)0x800002e8 = 5;
  *(uint16_t*)0x800002ea = 5;
  *(uint8_t*)0x800002ec = 0xa;
  *(uint16_t*)0x800002f0 = 5;
  *(uint16_t*)0x800002f2 = 4;
  *(uint8_t*)0x800002f4 = 0;
  *(uint16_t*)0x800002f8 = 9;
  *(uint16_t*)0x800002fa = 2;
  memcpy((void*)0x800002fc, "syz0\000", 5);
  *(uint16_t*)0x80000304 = 0x13;
  *(uint16_t*)0x80000306 = 3;
  memcpy((void*)0x80000308, "hash:net,iface\000", 15);
  *(uint32_t*)0x800001c4 = 0x58;
  *(uint32_t*)0x800000cc = 1;
  *(uint32_t*)0x800000d0 = 0;
  *(uint32_t*)0x800000d4 = 0;
  *(uint32_t*)0x800000d8 = 0;
  syscall(__NR_sendmsg, /*fd=*/(intptr_t)-1, /*msg=*/0x800000c0,
          /*f=MSG_EOR*/ 0x80);
  //  write$UHID_CREATE2 arguments: [
  //    fd: fd_uhid (resource)
  //    data: ptr[in, uhid_req[UHID_CREATE2, uhid_create2_req]] {
  //      uhid_req[UHID_CREATE2, uhid_create2_req] {
  //        type: const = 0xb (4 bytes)
  //        data: uhid_create2_req {
  //          name: buffer: {73 79 7a 30 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00} (length 0x80) phys: buffer: {73 79 7a 30 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00} (length 0x40) uniq: buffer: {73 79 7a
  //          30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00} (length 0x40)
  //          rd_size: len = 0x1d (2 bytes)
  //          bus: int16 = 0x3 (2 bytes)
  //          vendor: int32 = 0x56a (4 bytes)
  //          product: int32 = 0x3f (4 bytes)
  //          version: int32 = 0x0 (4 bytes)
  //          country: int32 = 0x0 (4 bytes)
  //          rd_data: buffer: {05 01 09 05 a1 01 05 09 19 01 29 0a 15 00 25 01
  //          75 01 95 0a 81 02 95 01 75 06 81 03 c0} (length 0x1d)
  //        }
  //      }
  //    }
  //    len: len = 0x135 (4 bytes)
  //  ]
  *(uint32_t*)0x80001000 = 0xb;
  memcpy(
      (void*)0x80001004,
      "syz0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000",
      128);
  memcpy((void*)0x80001084,
         "syz0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000",
         64);
  memcpy((void*)0x800010c4,
         "syz0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000",
         64);
  *(uint16_t*)0x80001104 = 0x1d;
  *(uint16_t*)0x80001106 = 3;
  *(uint32_t*)0x80001108 = 0x56a;
  *(uint32_t*)0x8000110c = 0x3f;
  *(uint32_t*)0x80001110 = 0;
  *(uint32_t*)0x80001114 = 0;
  memcpy((void*)0x80001118,
         "\x05\x01\x09\x05\xa1\x01\x05\x09\x19\x01\x29\x0a\x15\x00\x25\x01\x75"
         "\x01\x95\x0a\x81\x02\x95\x01\x75\x06\x81\x03\xc0",
         29);
  syscall(__NR_write, /*fd=*/(intptr_t)r[0], /*data=*/0x80001000,
          /*len=*/0x135);
  //  write$UHID_INPUT2 arguments: [
  //    fd: fd_uhid (resource)
  //    data: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //        union ANYUNION {
  //          ANYBLOB: buffer: {0c 00 00 00 0a 17} (length 0x6)
  //        }
  //      }
  //    }
  //    len: len = 0x10 (4 bytes)
  //  ]
  memcpy((void*)0x80000300, "\x0c\x00\x00\x00\x0a\x17", 6);
  syscall(__NR_write, /*fd=*/(intptr_t)r[0], /*data=*/0x80000300, /*len=*/0x10);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x7ffff000, /*len=*/0x1000, /*prot=*/0,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32,
          /*fd=*/(intptr_t)-1, /*offset=*/0);
  syscall(__NR_mmap, /*addr=*/0x80000000, /*len=*/0x1000000,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32,
          /*fd=*/(intptr_t)-1, /*offset=*/0);
  syscall(__NR_mmap, /*addr=*/0x81000000, /*len=*/0x1000, /*prot=*/0,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32,
          /*fd=*/(intptr_t)-1, /*offset=*/0);
  const char* reason;
  (void)reason;
  loop();
  return 0;
}