// https://syzkaller.appspot.com/bug?id=a1b218a23a1f25fef989f17dc51c9b08d89fc234
// 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>

static unsigned long long procid;

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)) {
  }
  //  socket$nl_route arguments: [
  //    domain: const = 0x10 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: const = 0x0 (4 bytes)
  //  ]
  //  returns sock_nl_route
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0);
  if (res != -1)
    r[0] = res;
  //  sendmsg$nl_route_sched arguments: [
  //    fd: sock_nl_route (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_route_sched]] {
  //      msghdr_netlink[netlink_msg_route_sched] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_route_sched]] {
  //          iovec[in, netlink_msg_route_sched] {
  //            addr: ptr[in, netlink_msg_route_sched] {
  //              union netlink_msg_route_sched {
  //                newqdisc: netlink_msg_t[const[RTM_NEWQDISC, int16],
  //                tcmsg[AF_UNSPEC], rtm_tca_policy] {
  //                  len: len = 0xb0 (4 bytes)
  //                  type: const = 0x24 (2 bytes)
  //                  flags: netlink_msg_flags = 0x605 (2 bytes)
  //                  seq: int32 = 0x0 (4 bytes)
  //                  pid: int32 = 0x0 (4 bytes)
  //                  payload: tcmsg[AF_UNSPEC] {
  //                    family: const = 0x0 (1 bytes)
  //                    tcm__pad1: const = 0x0 (1 bytes)
  //                    tcm__pad2: const = 0x0 (2 bytes)
  //                    ifindex: ifindex (resource)
  //                    tcm_handle: tcm_handle {
  //                      minor: tcm_handle_offsets = 0x0 (2 bytes)
  //                      major: tcm_handle_offsets = 0x1 (2 bytes)
  //                    }
  //                    tcm_parent: tcm_handle {
  //                      minor: tcm_handle_offsets = 0xffff (2 bytes)
  //                      major: tcm_handle_offsets = 0xffff (2 bytes)
  //                    }
  //                    tcm_info: tcm_handle {
  //                      minor: tcm_handle_offsets = 0x0 (2 bytes)
  //                      major: tcm_handle_offsets = 0x0 (2 bytes)
  //                    }
  //                  }
  //                  attrs: array[rtm_tca_policy] {
  //                    union rtm_tca_policy {
  //                      qdisc_kind_options: union qdisc_kind_options {
  //                        q_taprio: tca_kind_options_t["taprio",
  //                        array[taprio_policy]] {
  //                          TCA_KIND: nlattr_t[const[TCA_KIND, int16],
  //                          string["taprio"]] {
  //                            nla_len: offsetof = 0xb (2 bytes)
  //                            nla_type: const = 0x1 (2 bytes)
  //                            payload: buffer: {74 61 70 72 69 6f 00} (length
  //                            0x7) size: buffer: {} (length 0x0) pad = 0x0 (1
  //                            bytes)
  //                          }
  //                          TCA_OPTIONS: nlattr_t[const[TCA_OPTIONS, int16],
  //                          array[taprio_policy]] {
  //                            nla_len: offsetof = 0x80 (2 bytes)
  //                            nla_type: const = 0x2 (2 bytes)
  //                            payload: array[taprio_policy] {
  //                              union taprio_policy {
  //                                TCA_TAPRIO_ATTR_PRIOMAP:
  //                                nlattr_t[const[TCA_TAPRIO_ATTR_PRIOMAP,
  //                                int16], tc_mqprio_qopt] {
  //                                  nla_len: offsetof = 0x56 (2 bytes)
  //                                  nla_type: const = 0x1 (2 bytes)
  //                                  payload: tc_mqprio_qopt {
  //                                    num_tc: int8 = 0x1 (1 bytes)
  //                                    prio_tc_map: array[int8] {
  //                                      int8 = 0x0 (1 bytes)
  //                                      int8 = 0x0 (1 bytes)
  //                                      int8 = 0x0 (1 bytes)
  //                                      int8 = 0x0 (1 bytes)
  //                                      int8 = 0x0 (1 bytes)
  //                                      int8 = 0x0 (1 bytes)
  //                                      int8 = 0x0 (1 bytes)
  //                                      int8 = 0x0 (1 bytes)
  //                                      int8 = 0x0 (1 bytes)
  //                                      int8 = 0x0 (1 bytes)
  //                                      int8 = 0x0 (1 bytes)
  //                                      int8 = 0x0 (1 bytes)
  //                                      int8 = 0x0 (1 bytes)
  //                                      int8 = 0x0 (1 bytes)
  //                                      int8 = 0x0 (1 bytes)
  //                                      int8 = 0x0 (1 bytes)
  //                                    }
  //                                    hw: int8 = 0x0 (1 bytes)
  //                                    count: array[int16] {
  //                                      int16 = 0x1 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0xfffa (2 bytes)
  //                                    }
  //                                    offset: array[int16] {
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                      int16 = 0x0 (2 bytes)
  //                                    }
  //                                  }
  //                                  size: buffer: {} (length 0x0)
  //                                  pad = 0x0 (2 bytes)
  //                                }
  //                              }
  //                              union taprio_policy {
  //                                TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST:
  //                                nlattr_tt[const[TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST,
  //                                int16:14], 0, 1,
  //                                array[nlnest[TCA_TAPRIO_SCHED_ENTRY,
  //                                array[entry_policy$taprio]]]] {
  //                                  nla_len: offsetof = 0x1c (2 bytes)
  //                                  nla_type: const = 0x2 (1 bytes)
  //                                  NLA_F_NET_BYTEORDER: const = 0x0 (0 bytes)
  //                                  NLA_F_NESTED: const = 0x1 (1 bytes)
  //                                  payload:
  //                                  array[nlattr_tt[const[TCA_TAPRIO_SCHED_ENTRY,
  //                                  int16:14], 0, 1,
  //                                  array[entry_policy$taprio]]] {
  //                                    nlattr_tt[const[TCA_TAPRIO_SCHED_ENTRY,
  //                                    int16:14], 0, 1,
  //                                    array[entry_policy$taprio]] {
  //                                      nla_len: offsetof = 0xc (2 bytes)
  //                                      nla_type: const = 0x1 (1 bytes)
  //                                      NLA_F_NET_BYTEORDER: const = 0x0 (0
  //                                      bytes) NLA_F_NESTED: const = 0x1 (1
  //                                      bytes) payload:
  //                                      array[entry_policy$taprio] {
  //                                        union entry_policy$taprio {
  //                                          TCA_TAPRIO_SCHED_ENTRY_INTERVAL:
  //                                          nlattr_t[const[TCA_TAPRIO_SCHED_ENTRY_INTERVAL,
  //                                          int16], int32] {
  //                                            nla_len: offsetof = 0x8 (2
  //                                            bytes) nla_type: const = 0x4 (2
  //                                            bytes) payload: int32 = 0xcd (4
  //                                            bytes) size: buffer: {} (length
  //                                            0x0)
  //                                          }
  //                                        }
  //                                      }
  //                                      size: buffer: {} (length 0x0)
  //                                    }
  //                                    nlattr_tt[const[TCA_TAPRIO_SCHED_ENTRY,
  //                                    int16:14], 0, 1,
  //                                    array[entry_policy$taprio]] {
  //                                      nla_len: offsetof = 0xc (2 bytes)
  //                                      nla_type: const = 0x1 (1 bytes)
  //                                      NLA_F_NET_BYTEORDER: const = 0x0 (0
  //                                      bytes) NLA_F_NESTED: const = 0x1 (1
  //                                      bytes) payload:
  //                                      array[entry_policy$taprio] {
  //                                        union entry_policy$taprio {
  //                                          TCA_TAPRIO_SCHED_ENTRY_INTERVAL:
  //                                          nlattr_t[const[TCA_TAPRIO_SCHED_ENTRY_INTERVAL,
  //                                          int16], int32] {
  //                                            nla_len: offsetof = 0x8 (2
  //                                            bytes) nla_type: const = 0x4 (2
  //                                            bytes) payload: int32 = 0x81 (4
  //                                            bytes) size: buffer: {} (length
  //                                            0x0)
  //                                          }
  //                                        }
  //                                      }
  //                                      size: buffer: {} (length 0x0)
  //                                    }
  //                                  }
  //                                  size: buffer: {} (length 0x0)
  //                                }
  //                              }
  //                              union taprio_policy {
  //                                TCA_TAPRIO_ATTR_SCHED_CLOCKID:
  //                                nlattr_t[const[TCA_TAPRIO_ATTR_SCHED_CLOCKID,
  //                                int16], int32] {
  //                                  nla_len: offsetof = 0x8 (2 bytes)
  //                                  nla_type: const = 0x5 (2 bytes)
  //                                  payload: int32 = 0x1 (4 bytes)
  //                                  size: buffer: {} (length 0x0)
  //                                }
  //                              }
  //                            }
  //                            size: buffer: {} (length 0x0)
  //                          }
  //                        }
  //                      }
  //                    }
  //                  }
  //                }
  //              }
  //            }
  //            len: len = 0xb0 (8 bytes)
  //          }
  //        }
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x0 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000300 = 0;
  *(uint32_t*)0x200000000308 = 0;
  *(uint64_t*)0x200000000310 = 0x200000000400;
  *(uint64_t*)0x200000000400 = 0x200000000c40;
  *(uint32_t*)0x200000000c40 = 0xb0;
  *(uint16_t*)0x200000000c44 = 0x24;
  *(uint16_t*)0x200000000c46 = 0x605;
  *(uint32_t*)0x200000000c48 = 0;
  *(uint32_t*)0x200000000c4c = 0;
  *(uint8_t*)0x200000000c50 = 0;
  *(uint8_t*)0x200000000c51 = 0;
  *(uint16_t*)0x200000000c52 = 0;
  *(uint32_t*)0x200000000c54 = 0x2a;
  *(uint16_t*)0x200000000c58 = 0;
  *(uint16_t*)0x200000000c5a = 1;
  *(uint16_t*)0x200000000c5c = -1;
  *(uint16_t*)0x200000000c5e = -1;
  *(uint16_t*)0x200000000c60 = 0;
  *(uint16_t*)0x200000000c62 = 0;
  *(uint16_t*)0x200000000c64 = 0xb;
  *(uint16_t*)0x200000000c66 = 1;
  memcpy((void*)0x200000000c68, "taprio\000", 7);
  *(uint16_t*)0x200000000c70 = 0x80;
  *(uint16_t*)0x200000000c72 = 2;
  *(uint16_t*)0x200000000c74 = 0x56;
  *(uint16_t*)0x200000000c76 = 1;
  *(uint8_t*)0x200000000c78 = 1;
  *(uint8_t*)0x200000000c79 = 0;
  *(uint8_t*)0x200000000c7a = 0;
  *(uint8_t*)0x200000000c7b = 0;
  *(uint8_t*)0x200000000c7c = 0;
  *(uint8_t*)0x200000000c7d = 0;
  *(uint8_t*)0x200000000c7e = 0;
  *(uint8_t*)0x200000000c7f = 0;
  *(uint8_t*)0x200000000c80 = 0;
  *(uint8_t*)0x200000000c81 = 0;
  *(uint8_t*)0x200000000c82 = 0;
  *(uint8_t*)0x200000000c83 = 0;
  *(uint8_t*)0x200000000c84 = 0;
  *(uint8_t*)0x200000000c85 = 0;
  *(uint8_t*)0x200000000c86 = 0;
  *(uint8_t*)0x200000000c87 = 0;
  *(uint8_t*)0x200000000c88 = 0;
  *(uint8_t*)0x200000000c89 = 0;
  *(uint16_t*)0x200000000c8a = 1;
  *(uint16_t*)0x200000000c8c = 0;
  *(uint16_t*)0x200000000c8e = 0;
  *(uint16_t*)0x200000000c90 = 0;
  *(uint16_t*)0x200000000c92 = 0;
  *(uint16_t*)0x200000000c94 = 0;
  *(uint16_t*)0x200000000c96 = 0;
  *(uint16_t*)0x200000000c98 = 0;
  *(uint16_t*)0x200000000c9a = 0;
  *(uint16_t*)0x200000000c9c = 0;
  *(uint16_t*)0x200000000c9e = 0;
  *(uint16_t*)0x200000000ca0 = 0;
  *(uint16_t*)0x200000000ca2 = 0;
  *(uint16_t*)0x200000000ca4 = 0;
  *(uint16_t*)0x200000000ca6 = 0;
  *(uint16_t*)0x200000000ca8 = 0xfffa;
  *(uint16_t*)0x200000000caa = 0;
  *(uint16_t*)0x200000000cac = 0;
  *(uint16_t*)0x200000000cae = 0;
  *(uint16_t*)0x200000000cb0 = 0;
  *(uint16_t*)0x200000000cb2 = 0;
  *(uint16_t*)0x200000000cb4 = 0;
  *(uint16_t*)0x200000000cb6 = 0;
  *(uint16_t*)0x200000000cb8 = 0;
  *(uint16_t*)0x200000000cba = 0;
  *(uint16_t*)0x200000000cbc = 0;
  *(uint16_t*)0x200000000cbe = 0;
  *(uint16_t*)0x200000000cc0 = 0;
  *(uint16_t*)0x200000000cc2 = 0;
  *(uint16_t*)0x200000000cc4 = 0;
  *(uint16_t*)0x200000000cc6 = 0;
  *(uint16_t*)0x200000000cc8 = 0;
  *(uint16_t*)0x200000000ccc = 0x1c;
  STORE_BY_BITMASK(uint16_t, , 0x200000000cce, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200000000ccf, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200000000ccf, 1, 7, 1);
  *(uint16_t*)0x200000000cd0 = 0xc;
  STORE_BY_BITMASK(uint16_t, , 0x200000000cd2, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200000000cd3, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200000000cd3, 1, 7, 1);
  *(uint16_t*)0x200000000cd4 = 8;
  *(uint16_t*)0x200000000cd6 = 4;
  *(uint32_t*)0x200000000cd8 = 0xcd;
  *(uint16_t*)0x200000000cdc = 0xc;
  STORE_BY_BITMASK(uint16_t, , 0x200000000cde, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200000000cdf, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200000000cdf, 1, 7, 1);
  *(uint16_t*)0x200000000ce0 = 8;
  *(uint16_t*)0x200000000ce2 = 4;
  *(uint32_t*)0x200000000ce4 = 0x81;
  *(uint16_t*)0x200000000ce8 = 8;
  *(uint16_t*)0x200000000cea = 5;
  *(uint32_t*)0x200000000cec = 1;
  *(uint64_t*)0x200000000408 = 0xb0;
  *(uint64_t*)0x200000000318 = 1;
  *(uint64_t*)0x200000000320 = 0;
  *(uint64_t*)0x200000000328 = 0;
  *(uint32_t*)0x200000000330 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x200000000300ul, /*f=*/0ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000,
          /*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=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}