// https://syzkaller.appspot.com/bug?id=29ca5bf91840774bc83d381758a2a154f1f8df2f
// 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/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_bpf
#define __NR_bpf 321
#endif

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 int inject_fault(int nth)
{
  int fd;
  fd = open("/proc/thread-self/fail-nth", O_RDWR);
  if (fd == -1)
    exit(1);
  char buf[16];
  sprintf(buf, "%d", nth);
  if (write(fd, buf, strlen(buf)) != (ssize_t)strlen(buf))
    exit(1);
  return fd;
}

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 const char* setup_fault()
{
  int fd = open("/proc/self/make-it-fail", O_WRONLY);
  if (fd == -1)
    return "CONFIG_FAULT_INJECTION is not enabled";
  close(fd);
  fd = open("/proc/thread-self/fail-nth", O_WRONLY);
  if (fd == -1)
    return "kernel does not have systematic fault injection support";
  close(fd);
  static struct {
    const char* file;
    const char* val;
    bool fatal;
  } files[] = {
      {"/sys/kernel/debug/failslab/ignore-gfp-wait", "N", true},
      {"/sys/kernel/debug/fail_futex/ignore-private", "N", false},
      {"/sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem", "N", false},
      {"/sys/kernel/debug/fail_page_alloc/ignore-gfp-wait", "N", false},
      {"/sys/kernel/debug/fail_page_alloc/min-order", "0", false},
  };
  unsigned i;
  for (i = 0; i < sizeof(files) / sizeof(files[0]); i++) {
    if (!write_file(files[i].file, files[i].val)) {
      if (files[i].fatal)
        return "failed to write fault injection file";
    }
  }
  return NULL;
}

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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  bpf$MAP_CREATE arguments: [
  //    cmd: const = 0x0 (8 bytes)
  //    arg: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //        union ANYUNION {
  //          ANYBLOB: buffer: {1b 00 00 00 00 00 00 00 00 00 00 00 00 80}
  //          (length 0xe)
  //        }
  //      }
  //    }
  //    size: len = 0x50 (8 bytes)
  //  ]
  //  returns fd_bpf_map
  memcpy((void*)0x2000000000c0,
         "\x1b\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80", 14);
  res =
      syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x2000000000c0ul, /*size=*/0x50ul);
  if (res != -1)
    r[0] = res;
  //  bpf$PROG_LOAD arguments: [
  //    cmd: const = 0x5 (8 bytes)
  //    arg: ptr[in, bpf_prog_t[flags[bpf_prog_type, int32],
  //    bpf_prog_attach_types, bpf_btf_id[opt], fd_bpf_prog[opt]]] {
  //      bpf_prog_t[flags[bpf_prog_type, int32], bpf_prog_attach_types,
  //      bpf_btf_id[opt], fd_bpf_prog[opt]] {
  //        type: bpf_prog_type = 0x11 (4 bytes)
  //        ninsn: bytesize8 = 0xf (4 bytes)
  //        insns: ptr[in, bpf_instructions] {
  //          union bpf_instructions {
  //            ringbuf: bpf_program_ringbuf {
  //              initr0: bpf_insn_init_r0 {
  //                code: const = 0x18 (1 bytes)
  //                dst: const = 0x0 (0 bytes)
  //                src: const = 0x0 (1 bytes)
  //                off: const = 0x0 (2 bytes)
  //                imm: int32 = 0x8 (4 bytes)
  //                code2: const = 0x0 (1 bytes)
  //                regs2: const = 0x0 (1 bytes)
  //                off2: const = 0x0 (2 bytes)
  //                imm2: int32 = 0x2 (4 bytes)
  //              }
  //              reserve: bpf_insn_ringbuf_reserve {
  //                insn1: bpf_insn_map_fd_t[const[BPF_REG_1, int8:4],
  //                ringbuf_map_fd] {
  //                  code: const = 0x18 (1 bytes)
  //                  dst: const = 0x1 (0 bytes)
  //                  src: const = 0x1 (1 bytes)
  //                  off: const = 0x0 (2 bytes)
  //                  imm: ringbuf_map_fd (resource)
  //                  code2: const = 0x0 (1 bytes)
  //                  regs2: const = 0x0 (1 bytes)
  //                  off2: const = 0x0 (2 bytes)
  //                  imm2: const = 0x0 (4 bytes)
  //                }
  //                insn2: bpf_insn_alu_t[BPF_ALU64, BPF_K0, BPF_MOV0,
  //                const[BPF_REG_2, int8:4], const[0, int8:4], const[0, int16],
  //                const[20, int32]] {
  //                  code_class: int8 = 0x7 (0 bytes)
  //                  code_s: int8 = 0x0 (0 bytes)
  //                  code_op: int8 = 0xb (1 bytes)
  //                  dst: const = 0x2 (0 bytes)
  //                  src: const = 0x0 (1 bytes)
  //                  off: const = 0x0 (2 bytes)
  //                  imm: const = 0x14 (4 bytes)
  //                }
  //                insn3: bpf_insn_alu_t[BPF_ALU64, BPF_K0, BPF_MOV0,
  //                const[BPF_REG_3, int8:4], const[0, int8:4], const[0, int16],
  //                const[0, int32]] {
  //                  code_class: int8 = 0x7 (0 bytes)
  //                  code_s: int8 = 0x0 (0 bytes)
  //                  code_op: int8 = 0xb (1 bytes)
  //                  dst: const = 0x3 (0 bytes)
  //                  src: const = 0x0 (1 bytes)
  //                  off: const = 0x0 (2 bytes)
  //                  imm: const = 0x0 (4 bytes)
  //                }
  //                insn4:
  //                bpf_insn_call_helper_t[const[BPF_FUNC_ringbuf_reserve,
  //                int32]] {
  //                  code: const = 0x85 (1 bytes)
  //                  regs: const = 0x0 (1 bytes)
  //                  off: const = 0x0 (2 bytes)
  //                  func: const = 0x83 (4 bytes)
  //                }
  //                insn5: bpf_insn_alu_t[BPF_ALU64, BPF_X0, BPF_MOV0,
  //                const[BPF_REG_9, int8:4], const[BPF_REG_0, int8:4], const[0,
  //                int16], const[0, int32]] {
  //                  code_class: int8 = 0x7 (0 bytes)
  //                  code_s: int8 = 0x1 (0 bytes)
  //                  code_op: int8 = 0xb (1 bytes)
  //                  dst: const = 0x9 (0 bytes)
  //                  src: const = 0x0 (1 bytes)
  //                  off: const = 0x0 (2 bytes)
  //                  imm: const = 0x0 (4 bytes)
  //                }
  //              }
  //              null_check: bpf_insn_null_check[BPF_REG_9] {
  //                cond_jump: bpf_insn_not_null_jmp[BPF_REG_9] {
  //                  code_class: const = 0x5 (0 bytes)
  //                  code_s: const = 0x0 (0 bytes)
  //                  code_op: const = 0x5 (1 bytes)
  //                  dst: const = 0x9 (0 bytes)
  //                  src: const = 0x0 (1 bytes)
  //                  off: const = 0x1 (2 bytes)
  //                  imm: const = 0x0 (4 bytes)
  //                }
  //                exit: bpf_insn_exit {
  //                  code: const = 0x95 (1 bytes)
  //                  regs: const = 0x0 (1 bytes)
  //                  off: const = 0x0 (2 bytes)
  //                  imm: const = 0x0 (4 bytes)
  //                }
  //              }
  //              body: array[bpf_insn] {
  //              }
  //              free: bpf_insn_ringbuf_free {
  //                insn1: bpf_insn_alu_t[BPF_ALU64, BPF_X0, BPF_MOV0,
  //                const[BPF_REG_1, int8:4], const[BPF_REG_9, int8:4], const[0,
  //                int16], const[0, int32]] {
  //                  code_class: int8 = 0x7 (0 bytes)
  //                  code_s: int8 = 0x1 (0 bytes)
  //                  code_op: int8 = 0xb (1 bytes)
  //                  dst: const = 0x1 (0 bytes)
  //                  src: const = 0x9 (1 bytes)
  //                  off: const = 0x0 (2 bytes)
  //                  imm: const = 0x0 (4 bytes)
  //                }
  //                insn2: bpf_insn_alu_t[BPF_ALU64, BPF_K0, BPF_MOV0,
  //                const[BPF_REG_2, int8:4], const[0, int8:4], const[0, int16],
  //                flags[bpf_ringbuf_wakeup_flags, int32]] {
  //                  code_class: int8 = 0x7 (0 bytes)
  //                  code_s: int8 = 0x0 (0 bytes)
  //                  code_op: int8 = 0xb (1 bytes)
  //                  dst: const = 0x2 (0 bytes)
  //                  src: const = 0x0 (1 bytes)
  //                  off: const = 0x0 (2 bytes)
  //                  imm: bpf_ringbuf_wakeup_flags = 0x1 (4 bytes)
  //                }
  //                insn3:
  //                bpf_insn_call_helper_t[flags[bpf_helpers_ringbuf_free,
  //                int32]] {
  //                  code: const = 0x85 (1 bytes)
  //                  regs: const = 0x0 (1 bytes)
  //                  off: const = 0x0 (2 bytes)
  //                  func: bpf_helpers_ringbuf_free = 0x84 (4 bytes)
  //                }
  //                insn4: bpf_insn_alu_t[BPF_ALU64, BPF_K0, BPF_MOV0,
  //                const[BPF_REG_0, int8:4], const[0, int8:4], const[0, int16],
  //                const[0, int32]] {
  //                  code_class: int8 = 0x7 (0 bytes)
  //                  code_s: int8 = 0x0 (0 bytes)
  //                  code_op: int8 = 0xb (1 bytes)
  //                  dst: const = 0x0 (0 bytes)
  //                  src: const = 0x0 (1 bytes)
  //                  off: const = 0x0 (2 bytes)
  //                  imm: const = 0x0 (4 bytes)
  //                }
  //              }
  //              exit: bpf_insn_exit {
  //                code: const = 0x95 (1 bytes)
  //                regs: const = 0x0 (1 bytes)
  //                off: const = 0x0 (2 bytes)
  //                imm: const = 0x0 (4 bytes)
  //              }
  //            }
  //          }
  //        }
  //        license: ptr[in, buffer] {
  //          buffer: {47 50 4c 00} (length 0x4)
  //        }
  //        loglev: int32 = 0x0 (4 bytes)
  //        logsize: len = 0x0 (4 bytes)
  //        log: nil
  //        kern_version: bpf_kern_version = 0x40f00 (4 bytes)
  //        flags: bpf_prog_load_flags = 0x0 (4 bytes)
  //        prog_name: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
  //        (length 0x10) prog_ifindex: ifindex (resource) expected_attach_type:
  //        union bpf_prog_attach_types {
  //          fallback: bpf_attach_types = 0xed41d0969ec4053c (4 bytes)
  //        }
  //        btf_fd: fd_btf (resource)
  //        func_info_rec_size: const = 0x0 (4 bytes)
  //        func_info: nil
  //        func_info_cnt: len = 0x0 (4 bytes)
  //        line_info_rec_size: const = 0x0 (4 bytes)
  //        line_info: nil
  //        line_info_cnt: len = 0x0 (4 bytes)
  //        attach_btf_id: bpf_btf_id (resource)
  //        attach_prog_fd: fd_bpf_prog (resource)
  //        core_relo_cnt: len = 0x0 (4 bytes)
  //        fd_array: nil
  //        core_relos: nil
  //        core_relo_rec_size: const = 0x0 (4 bytes)
  //        log_true_size: int32 = 0x0 (4 bytes)
  //        prog_token_fd: union _bpf_prog_t[flags[bpf_prog_type, int32],
  //        bpf_prog_attach_types, bpf_btf_id[opt],
  //        fd_bpf_prog[opt]]_prog_token_fd_wrapper {
  //          void: buffer: {} (length 0x0)
  //        }
  //        pad: union _bpf_prog_t[flags[bpf_prog_type, int32],
  //        bpf_prog_attach_types, bpf_btf_id[opt],
  //        fd_bpf_prog[opt]]_pad_wrapper {
  //          value: const = 0x0 (4 bytes)
  //        }
  //      }
  //    }
  //    size: len = 0x94 (8 bytes)
  //  ]
  //  returns fd_bpf_prog
  *(uint32_t*)0x200000000340 = 0x11;
  *(uint32_t*)0x200000000344 = 0xf;
  *(uint64_t*)0x200000000348 = 0x200000000280;
  *(uint8_t*)0x200000000280 = 0x18;
  STORE_BY_BITMASK(uint8_t, , 0x200000000281, 0, 0, 4);
  STORE_BY_BITMASK(uint8_t, , 0x200000000281, 0, 4, 4);
  *(uint16_t*)0x200000000282 = 0;
  *(uint32_t*)0x200000000284 = 8;
  *(uint8_t*)0x200000000288 = 0;
  *(uint8_t*)0x200000000289 = 0;
  *(uint16_t*)0x20000000028a = 0;
  *(uint32_t*)0x20000000028c = 2;
  *(uint8_t*)0x200000000290 = 0x18;
  STORE_BY_BITMASK(uint8_t, , 0x200000000291, 1, 0, 4);
  STORE_BY_BITMASK(uint8_t, , 0x200000000291, 1, 4, 4);
  *(uint16_t*)0x200000000292 = 0;
  *(uint32_t*)0x200000000294 = r[0];
  *(uint8_t*)0x200000000298 = 0;
  *(uint8_t*)0x200000000299 = 0;
  *(uint16_t*)0x20000000029a = 0;
  *(uint32_t*)0x20000000029c = 0;
  STORE_BY_BITMASK(uint8_t, , 0x2000000002a0, 7, 0, 3);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002a0, 0, 3, 1);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002a0, 0xb, 4, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002a1, 2, 0, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002a1, 0, 4, 4);
  *(uint16_t*)0x2000000002a2 = 0;
  *(uint32_t*)0x2000000002a4 = 0x14;
  STORE_BY_BITMASK(uint8_t, , 0x2000000002a8, 7, 0, 3);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002a8, 0, 3, 1);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002a8, 0xb, 4, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002a9, 3, 0, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002a9, 0, 4, 4);
  *(uint16_t*)0x2000000002aa = 0;
  *(uint32_t*)0x2000000002ac = 0;
  *(uint8_t*)0x2000000002b0 = 0x85;
  *(uint8_t*)0x2000000002b1 = 0;
  *(uint16_t*)0x2000000002b2 = 0;
  *(uint32_t*)0x2000000002b4 = 0x83;
  STORE_BY_BITMASK(uint8_t, , 0x2000000002b8, 7, 0, 3);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002b8, 1, 3, 1);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002b8, 0xb, 4, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002b9, 9, 0, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002b9, 0, 4, 4);
  *(uint16_t*)0x2000000002ba = 0;
  *(uint32_t*)0x2000000002bc = 0;
  STORE_BY_BITMASK(uint8_t, , 0x2000000002c0, 5, 0, 3);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002c0, 0, 3, 1);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002c0, 5, 4, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002c1, 9, 0, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002c1, 0, 4, 4);
  *(uint16_t*)0x2000000002c2 = 1;
  *(uint32_t*)0x2000000002c4 = 0;
  *(uint8_t*)0x2000000002c8 = 0x95;
  *(uint8_t*)0x2000000002c9 = 0;
  *(uint16_t*)0x2000000002ca = 0;
  *(uint32_t*)0x2000000002cc = 0;
  STORE_BY_BITMASK(uint8_t, , 0x2000000002d0, 7, 0, 3);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002d0, 1, 3, 1);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002d0, 0xb, 4, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002d1, 1, 0, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002d1, 9, 4, 4);
  *(uint16_t*)0x2000000002d2 = 0;
  *(uint32_t*)0x2000000002d4 = 0;
  STORE_BY_BITMASK(uint8_t, , 0x2000000002d8, 7, 0, 3);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002d8, 0, 3, 1);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002d8, 0xb, 4, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002d9, 2, 0, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002d9, 0, 4, 4);
  *(uint16_t*)0x2000000002da = 0;
  *(uint32_t*)0x2000000002dc = 1;
  *(uint8_t*)0x2000000002e0 = 0x85;
  *(uint8_t*)0x2000000002e1 = 0;
  *(uint16_t*)0x2000000002e2 = 0;
  *(uint32_t*)0x2000000002e4 = 0x84;
  STORE_BY_BITMASK(uint8_t, , 0x2000000002e8, 7, 0, 3);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002e8, 0, 3, 1);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002e8, 0xb, 4, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002e9, 0, 0, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000002e9, 0, 4, 4);
  *(uint16_t*)0x2000000002ea = 0;
  *(uint32_t*)0x2000000002ec = 0;
  *(uint8_t*)0x2000000002f0 = 0x95;
  *(uint8_t*)0x2000000002f1 = 0;
  *(uint16_t*)0x2000000002f2 = 0;
  *(uint32_t*)0x2000000002f4 = 0;
  *(uint64_t*)0x200000000350 = 0x200000000040;
  memcpy((void*)0x200000000040, "GPL\000", 4);
  *(uint32_t*)0x200000000358 = 0;
  *(uint32_t*)0x20000000035c = 0;
  *(uint64_t*)0x200000000360 = 0;
  *(uint32_t*)0x200000000368 = 0x40f00;
  *(uint32_t*)0x20000000036c = 0;
  memset((void*)0x200000000370, 0, 16);
  *(uint32_t*)0x200000000380 = 0;
  *(uint32_t*)0x200000000384 = 0x9ec4053c;
  *(uint32_t*)0x200000000388 = -1;
  *(uint32_t*)0x20000000038c = 0;
  *(uint64_t*)0x200000000390 = 0;
  *(uint32_t*)0x200000000398 = 0;
  *(uint32_t*)0x20000000039c = 0;
  *(uint64_t*)0x2000000003a0 = 0;
  *(uint32_t*)0x2000000003a8 = 0;
  *(uint32_t*)0x2000000003ac = 0;
  *(uint32_t*)0x2000000003b0 = 0;
  *(uint32_t*)0x2000000003b4 = 0;
  *(uint64_t*)0x2000000003b8 = 0;
  *(uint64_t*)0x2000000003c0 = 0;
  *(uint32_t*)0x2000000003c8 = 0;
  *(uint32_t*)0x2000000003cc = 0;
  *(uint32_t*)0x2000000003d0 = 0;
  res =
      syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000000340ul, /*size=*/0x94ul);
  if (res != -1)
    r[1] = res;
  //  bpf$BPF_RAW_TRACEPOINT_OPEN arguments: [
  //    cmd: const = 0x11 (8 bytes)
  //    arg: ptr[in, bpf_raw_tracepoint] {
  //      bpf_raw_tracepoint {
  //        name: ptr[in, buffer] {
  //          buffer: {74 6c 62 5f 66 6c 75 73 68 00} (length 0xa)
  //        }
  //        prog_fd: fd_bpf_prog_raw_tracepoint (resource)
  //        pad: const = 0x0 (4 bytes)
  //        cookie: int64 = 0x0 (8 bytes)
  //      }
  //    }
  //    size: len = 0x10 (8 bytes)
  //  ]
  //  returns fd_perf_base
  *(uint64_t*)0x200000000080 = 0x200000000000;
  memcpy((void*)0x200000000000, "tlb_flush\000", 10);
  *(uint32_t*)0x200000000088 = r[1];
  *(uint32_t*)0x20000000008c = 0;
  *(uint64_t*)0x200000000090 = 0;
  res = syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x200000000080ul,
                /*size=*/0x10ul);
  if (res != -1)
    r[2] = res;
  //  close arguments: [
  //    fd: fd (resource)
  //  ]
  inject_fault(1);
  syscall(__NR_close, /*fd=*/r[2]);
}
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;
  if ((reason = setup_fault()))
    printf("the reproducer may not work as expected: fault injection setup "
           "failed: %s\n",
           reason);
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}