// https://syzkaller.appspot.com/bug?id=ecc13ed3cdced06f4d20c13ae9973406c7192692
// 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
#ifndef __NR_close_range
#define __NR_close_range 436
#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;
}

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 setup_sysctl()
{
  int cad_pid = fork();
  if (cad_pid < 0)
    exit(1);
  if (cad_pid == 0) {
    for (;;)
      sleep(100);
  }
  char tmppid[32];
  snprintf(tmppid, sizeof(tmppid), "%d", cad_pid);
  struct {
    const char* name;
    const char* data;
  } files[] = {
      {"/sys/kernel/debug/x86/nmi_longest_ns", "10000000000"},
      {"/proc/sys/kernel/hung_task_check_interval_secs", "20"},
      {"/proc/sys/net/core/bpf_jit_kallsyms", "1"},
      {"/proc/sys/net/core/bpf_jit_harden", "0"},
      {"/proc/sys/kernel/kptr_restrict", "0"},
      {"/proc/sys/kernel/softlockup_all_cpu_backtrace", "1"},
      {"/proc/sys/fs/mount-max", "100"},
      {"/proc/sys/vm/oom_dump_tasks", "0"},
      {"/proc/sys/debug/exception-trace", "0"},
      {"/proc/sys/kernel/printk", "7 4 1 3"},
      {"/proc/sys/kernel/keys/gc_delay", "1"},
      {"/proc/sys/vm/oom_kill_allocating_task", "1"},
      {"/proc/sys/kernel/ctrl-alt-del", "0"},
      {"/proc/sys/kernel/cad_pid", tmppid},
  };
  for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) {
    if (!write_file(files[i].name, files[i].data)) {
    }
  }
  kill(cad_pid, SIGKILL);
  while (waitpid(cad_pid, NULL, 0) != cad_pid)
    ;
}

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[5] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  memcpy((void*)0x20002040, "./file0\000", 8);
  syscall(__NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x20002040ul, /*mode=*/0ul);
  *(uint32_t*)0x200000c0 = 0x1b;
  *(uint32_t*)0x200000c4 = 0;
  *(uint32_t*)0x200000c8 = 0;
  *(uint32_t*)0x200000cc = 0x8000;
  *(uint32_t*)0x200000d0 = 0;
  *(uint32_t*)0x200000d4 = -1;
  *(uint32_t*)0x200000d8 = 0;
  memset((void*)0x200000dc, 0, 16);
  *(uint32_t*)0x200000ec = 0;
  *(uint32_t*)0x200000f0 = -1;
  *(uint32_t*)0x200000f4 = 0;
  *(uint32_t*)0x200000f8 = 0;
  *(uint32_t*)0x200000fc = 0;
  *(uint64_t*)0x20000100 = 0;
  syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x200000c0ul, /*size=*/0x48ul);
  syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0x10);
  syscall(__NR_socketpair, /*domain=*/1ul, /*type=*/0ul, /*proto=*/0,
          /*fds=*/0ul);
  syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0ul, /*flags=*/0ul,
          /*mode=*/0ul);
  syscall(__NR_prctl, /*option=*/0x3eul, /*cmd=*/1ul, /*pid=*/0,
          /*type=PIDTYPE_PGID*/ 2ul, /*uaddr=*/0ul);
  syscall(__NR_sched_setaffinity, /*pid=*/0, /*cpusetsize=*/0ul, /*mask=*/0ul);
  memcpy((void*)0x200000c0, "./file1\000", 8);
  res = syscall(
      __NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000c0ul,
      /*flags=O_SYNC|O_NONBLOCK|O_NOATIME|O_EXCL|O_DIRECT|0x42*/ 0x1458c2ul,
      /*mode=*/0ul);
  if (res != -1)
    r[0] = res;
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0ul,
                /*flags=*/0ul, /*mode=*/0ul);
  if (res != -1)
    r[1] = res;
  syscall(__NR_sendfile, /*fdout=*/r[0], /*fdin=*/r[1], /*off=*/0ul,
          /*count=*/0x15ul);
  *(uint64_t*)0x20000240 = 0x20033a80;
  *(uint64_t*)0x20000248 = 0xfffffd6e;
  syscall(__NR_preadv, /*fd=*/-1, /*vec=*/0x20000240ul, /*vlen=*/1ul,
          /*off_low=*/0, /*off_high=*/0);
  memcpy((void*)0x20000040, "/sys/kernel/debug/bluetooth/6lowpan_enable\000",
         43);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x20000040ul,
                /*flags=*/2ul, /*mode=*/0ul);
  if (res != -1)
    r[2] = res;
  syscall(__NR_msync, /*addr=*/0x20ff7000ul, /*len=*/0x3000ul, /*f=*/0ul);
  memset((void*)0x20000080, 49, 1);
  syscall(__NR_write, /*fd=*/r[2], /*data=*/0x20000080ul, /*len=*/1ul);
  syscall(__NR_socket, /*domain=*/0xaul, /*type=SOCK_SEQPACKET*/ 5ul,
          /*proto=*/0x84);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0ul,
                /*flags=*/0ul, /*mode=*/0ul);
  if (res != -1)
    r[3] = res;
  res = syscall(__NR_socket, /*domain=*/0xaul, /*type=*/1ul, /*proto=*/0);
  if (res != -1)
    r[4] = res;
  memcpy((void*)0x200001c0,
         "raw\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",
         32);
  *(uint32_t*)0x200001e0 = 0x3c1;
  *(uint32_t*)0x200001e4 = 3;
  *(uint32_t*)0x200001e8 = 0x4c8;
  *(uint32_t*)0x200001ec = 0x2e0;
  *(uint32_t*)0x200001f0 = 0x9403;
  *(uint32_t*)0x200001f4 = 0x3002;
  *(uint32_t*)0x200001f8 = 0;
  *(uint32_t*)0x200001fc = 0x2c0;
  *(uint32_t*)0x20000200 = 0x3f8;
  *(uint32_t*)0x20000204 = 0x3d8;
  *(uint32_t*)0x20000208 = 0x3d8;
  *(uint32_t*)0x2000020c = 0x3f8;
  *(uint32_t*)0x20000210 = 0x3d8;
  *(uint32_t*)0x20000214 = 3;
  *(uint64_t*)0x20000218 = 0;
  memset((void*)0x20000220, 0, 136);
  *(uint32_t*)0x200002a8 = 0;
  *(uint16_t*)0x200002ac = 0x298;
  *(uint16_t*)0x200002ae = 0x2e0;
  *(uint32_t*)0x200002b0 = 0;
  *(uint64_t*)0x200002b8 = 0;
  *(uint64_t*)0x200002c0 = 0;
  *(uint16_t*)0x200002c8 = 0xf8;
  memcpy((void*)0x200002ca,
         "recent\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000",
         29);
  *(uint8_t*)0x200002e7 = 0;
  *(uint32_t*)0x200002e8 = 0;
  *(uint32_t*)0x200002ec = 0;
  *(uint8_t*)0x200002f0 = 1;
  *(uint8_t*)0x200002f1 = 0;
  memcpy(
      (void*)0x200002f2,
      "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\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",
      200);
  *(uint8_t*)0x200003ba = 0;
  *(uint16_t*)0x200003c0 = 0xf8;
  memcpy((void*)0x200003c2,
         "recent\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000",
         29);
  *(uint8_t*)0x200003df = 0;
  *(uint32_t*)0x200003e0 = 0;
  *(uint32_t*)0x200003e4 = 0x80;
  *(uint8_t*)0x200003e8 = 1;
  *(uint8_t*)0x200003e9 = 0;
  memcpy(
      (void*)0x200003ea,
      "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\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",
      200);
  *(uint8_t*)0x200004b2 = 0;
  *(uint16_t*)0x200004b8 = 0x48;
  memcpy((void*)0x200004ba,
         "TEE\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",
         29);
  *(uint8_t*)0x200004d7 = 1;
  *(uint32_t*)0x200004d8 = htobe32(0x7f000001);
  memcpy((void*)0x200004e8, "virt_wifi0\000\000\000\000\000\000", 16);
  *(uint64_t*)0x200004f8 = 0;
  memset((void*)0x20000500, 0, 136);
  *(uint32_t*)0x20000588 = 0;
  *(uint16_t*)0x2000058c = 0xd0;
  *(uint16_t*)0x2000058e = 0x118;
  *(uint32_t*)0x20000590 = 0;
  *(uint64_t*)0x20000598 = 0;
  *(uint64_t*)0x200005a0 = 0;
  *(uint16_t*)0x200005a8 = 0x28;
  memcpy((void*)0x200005aa,
         "rpfilter\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000",
         29);
  *(uint8_t*)0x200005c7 = 0;
  *(uint8_t*)0x200005c8 = 0;
  *(uint16_t*)0x200005d0 = 0x48;
  memcpy((void*)0x200005d2,
         "CT\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",
         29);
  *(uint8_t*)0x200005ef = 0;
  *(uint16_t*)0x200005f0 = 0;
  *(uint16_t*)0x200005f2 = 0;
  *(uint32_t*)0x200005f4 = 0;
  *(uint32_t*)0x200005f8 = 0;
  memcpy((void*)0x200005fc,
         "syz1\000\000\000\000\000\000\000\000\000\000\000\000", 16);
  *(uint64_t*)0x20000610 = 0;
  memset((void*)0x20000618, 0, 136);
  *(uint32_t*)0x200006a0 = 0;
  *(uint16_t*)0x200006a4 = 0xa8;
  *(uint16_t*)0x200006a6 = 0xd0;
  *(uint32_t*)0x200006a8 = 0;
  *(uint64_t*)0x200006b0 = 0;
  *(uint64_t*)0x200006b8 = 0;
  *(uint16_t*)0x200006c0 = 0x28;
  memset((void*)0x200006c2, 0, 29);
  *(uint8_t*)0x200006df = 0;
  *(uint32_t*)0x200006e0 = 0xfffffffe;
  syscall(__NR_setsockopt, /*fd=*/r[4], /*level=*/0x29, /*opt=*/0x40,
          /*val=*/0x200001c0ul, /*len=*/0x528ul);
  *(uint32_t*)0x20000800 = 0;
  memcpy((void*)0x20000804,
         "\x56\x60\x35\x9c\x32\x45\xd1\xc4\x23\x17\xaf\xad\x7d\x48\xed\x51\x00"
         "\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00",
         32);
  syscall(__NR_ioctl, /*fd=*/r[3], /*cmd=*/0xc0285700, /*arg=*/0x20000800ul);
  syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0ul,
          /*f=MSG_NOSIGNAL|MSG_DONTROUTE*/ 0x4004ul);
  syscall(__NR_ioctl, /*fd=*/-1, /*cmd=*/0xc0303e03, /*arg=*/0ul);
  syscall(__NR_close_range, /*fd=*/-1, /*max_fd=*/-1, /*flags=*/0ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  setup_sysctl();
  const char* reason;
  (void)reason;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}