// https://syzkaller.appspot.com/bug?id=7349616606afa3c986c377792f7ccbf9daae1142
// 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;
}

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

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  openat$vnet arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    file: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 76 68 6f 73 74 2d 6e 65 74 00} (length 0xf)
  //    }
  //    flags: const = 0x2 (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns vhost_net
  memcpy((void*)0x200000000c00, "/dev/vhost-net\000", 15);
  syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x200000000c00ul,
          /*flags=*/2, /*mode=*/0);
  //  prlimit64 arguments: [
  //    pid: pid (resource)
  //    res: rlimit_type = 0xe (8 bytes)
  //    new: ptr[in, rlimit] {
  //      rlimit {
  //        soft: intptr = 0x6 (8 bytes)
  //        hard: intptr = 0x8b (8 bytes)
  //      }
  //    }
  //    old: nil
  //  ]
  *(uint64_t*)0x200000000140 = 6;
  *(uint64_t*)0x200000000148 = 0x8b;
  syscall(__NR_prlimit64, /*pid=*/0, /*res=RLIMIT_RTPRIO*/ 0xeul,
          /*new=*/0x200000000140ul, /*old=*/0ul);
  //  sched_setscheduler arguments: [
  //    pid: pid (resource)
  //    policy: sched_policy = 0x2 (8 bytes)
  //    prio: ptr[in, int32] {
  //      int32 = 0x2 (4 bytes)
  //    }
  //  ]
  *(uint32_t*)0x200000000180 = 2;
  syscall(__NR_sched_setscheduler, /*pid=*/0, /*policy=SCHED_RR*/ 2ul,
          /*prio=*/0x200000000180ul);
  //  prctl$PR_SCHED_CORE arguments: [
  //    option: const = 0x3e (8 bytes)
  //    cmd: intptr = 0x1 (8 bytes)
  //    pid: pid (resource)
  //    type: pid_type = 0x2 (8 bytes)
  //    uaddr: nil
  //  ]
  syscall(__NR_prctl, /*option=*/0x3eul, /*cmd=*/1ul, /*pid=*/0,
          /*type=PIDTYPE_PGID*/ 2ul, /*uaddr=*/0ul);
  //  bpf$MAP_CREATE_CONST_STR arguments: [
  //    cmd: const = 0x0 (8 bytes)
  //    arg: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //        union ANYUNION {
  //          ANYBLOB: buffer: {02 00 00 00 04 00 00 00 08 00 00 00 01} (length
  //          0xd)
  //        }
  //      }
  //    }
  //    size: len = 0x48 (8 bytes)
  //  ]
  //  returns fd_bpf_const_str_map
  memcpy((void*)0x200000000340,
         "\x02\x00\x00\x00\x04\x00\x00\x00\x08\x00\x00\x00\x01", 13);
  res =
      syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x200000000340ul, /*size=*/0x48ul);
  if (res != -1)
    r[0] = res;
  //  bpf$BPF_MAP_CONST_STR_FREEZE arguments: [
  //    cmd: const = 0x16 (8 bytes)
  //    arg: ptr[inout, bpf_map_const_str_freeze] {
  //      bpf_map_const_str_freeze {
  //        in: fd_bpf_const_str (resource)
  //        out: bpf_frozen_const_str (resource)
  //      }
  //    }
  //    size: len = 0x4 (8 bytes)
  //  ]
  *(uint32_t*)0x200000000480 = r[0];
  res =
      syscall(__NR_bpf, /*cmd=*/0x16ul, /*arg=*/0x200000000480ul, /*size=*/4ul);
  if (res != -1)
    r[1] = *(uint32_t*)0x200000000480;
  //  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 = 0xa (4 bytes)
  //        ninsn: bytesize8 = 0x10 (4 bytes)
  //        insns: ptr[inout, array[ANYUNION]] {
  //          array[ANYUNION] {
  //            union ANYUNION {
  //              ANYBLOB: buffer: {18 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //              00 b7 08 00 00 b0 a5 00 00 7b 8a 00 fe 00 00 00 00 87 08 00 00
  //              00 00 00 00 7b 8a f0 ff 00 00 00 00 bd a1 00 00 00 00 00 00 27
  //              00 00 00 f8 ff ff ff bf a4 00 00 00 00 00 00 07 04 00 00 f0 ff
  //              ff ff b7 02 00 00 08 00 00 00 18 23 00 00} (length 0x5c)
  //            }
  //            union ANYUNION {
  //              ANYRES32: ANYRES32 (resource)
  //            }
  //            union ANYUNION {
  //              ANYBLOB: buffer: {00 00 00 00 00 00 00 00 b7 04 00 00 08 00 00
  //              00 85 00 00 00 49 00 00 00 95} (length 0x19)
  //            }
  //          }
  //        }
  //        license: ptr[in, buffer] {
  //          buffer: {73 79 7a 6b 61 6c 6c 65 72 00} (length 0xa)
  //        }
  //        loglev: int32 = 0x0 (4 bytes)
  //        logsize: len = 0x0 (4 bytes)
  //        log: nil
  //        kern_version: bpf_kern_version = 0x0 (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 = 0x17 (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*)0x2000000004c0 = 0xa;
  *(uint32_t*)0x2000000004c4 = 0x10;
  *(uint64_t*)0x2000000004c8 = 0x200000000740;
  memcpy((void*)0x200000000740,
         "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xb7"
         "\x08\x00\x00\xb0\xa5\x00\x00\x7b\x8a\x00\xfe\x00\x00\x00\x00\x87\x08"
         "\x00\x00\x00\x00\x00\x00\x7b\x8a\xf0\xff\x00\x00\x00\x00\xbd\xa1\x00"
         "\x00\x00\x00\x00\x00\x27\x00\x00\x00\xf8\xff\xff\xff\xbf\xa4\x00\x00"
         "\x00\x00\x00\x00\x07\x04\x00\x00\xf0\xff\xff\xff\xb7\x02\x00\x00\x08"
         "\x00\x00\x00\x18\x23\x00\x00",
         92);
  *(uint32_t*)0x20000000079c = r[1];
  memcpy((void*)0x2000000007a0,
         "\x00\x00\x00\x00\x00\x00\x00\x00\xb7\x04\x00\x00\x08\x00\x00\x00\x85"
         "\x00\x00\x00\x49\x00\x00\x00\x95",
         25);
  *(uint64_t*)0x2000000004d0 = 0x200000000440;
  memcpy((void*)0x200000000440, "syzkaller\000", 10);
  *(uint32_t*)0x2000000004d8 = 0;
  *(uint32_t*)0x2000000004dc = 0;
  *(uint64_t*)0x2000000004e0 = 0;
  *(uint32_t*)0x2000000004e8 = 0;
  *(uint32_t*)0x2000000004ec = 0;
  memset((void*)0x2000000004f0, 0, 16);
  *(uint32_t*)0x200000000500 = 0;
  *(uint32_t*)0x200000000504 = 0x17;
  *(uint32_t*)0x200000000508 = 0;
  *(uint32_t*)0x20000000050c = 0;
  *(uint64_t*)0x200000000510 = 0;
  *(uint32_t*)0x200000000518 = 0;
  *(uint32_t*)0x20000000051c = 0;
  *(uint64_t*)0x200000000520 = 0;
  *(uint32_t*)0x200000000528 = 0;
  *(uint32_t*)0x20000000052c = 0;
  *(uint32_t*)0x200000000530 = 0;
  *(uint32_t*)0x200000000534 = 0;
  *(uint64_t*)0x200000000538 = 0;
  *(uint64_t*)0x200000000540 = 0;
  *(uint32_t*)0x200000000548 = 0;
  *(uint32_t*)0x20000000054c = 0;
  *(uint32_t*)0x200000000550 = 0;
  res =
      syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x2000000004c0ul, /*size=*/0x94ul);
  if (res != -1)
    r[2] = res;
  //  bpf$BPF_PROG_TEST_RUN arguments: [
  //    cmd: const = 0xa (8 bytes)
  //    arg: ptr[in, bpf_test_prog_arg] {
  //      bpf_test_prog_arg {
  //        prog: fd_bpf_prog (resource)
  //        retval: const = 0x18000000000002a0 (4 bytes)
  //        insizedata: len = 0xe (4 bytes)
  //        outsizedata: len = 0x0 (4 bytes)
  //        indata: ptr[in, buffer] {
  //          buffer: {76 38 9e 6a 65 58 55 78 02 00 00 00 00 00} (length 0xe)
  //        }
  //        outdata: nil
  //        repeat: int32 = 0x7fffffff (4 bytes)
  //        dur: const = 0x60000000 (4 bytes)
  //        insizectx: len = 0x0 (4 bytes)
  //        outsizectx: len = 0x0 (4 bytes)
  //        inctx: nil
  //        outctx: nil
  //        flags: bpf_prog_test_run_flags = 0x0 (4 bytes)
  //        cpu: const = 0x0 (4 bytes)
  //        batch_size: int32 = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    size: len = 0x9f (8 bytes)
  //  ]
  *(uint32_t*)0x200000000900 = r[2];
  *(uint32_t*)0x200000000904 = 0x2a0;
  *(uint32_t*)0x200000000908 = 0xe;
  *(uint32_t*)0x20000000090c = 0;
  *(uint64_t*)0x200000000910 = 0x200000000040;
  memcpy((void*)0x200000000040,
         "\x76\x38\x9e\x6a\x65\x58\x55\x78\x02\x00\x00\x00\x00\x00", 14);
  *(uint64_t*)0x200000000918 = 0;
  *(uint32_t*)0x200000000920 = 0x7fffffff;
  *(uint32_t*)0x200000000924 = 0x60000000;
  *(uint32_t*)0x200000000928 = 0;
  *(uint32_t*)0x20000000092c = 0;
  *(uint64_t*)0x200000000930 = 0;
  *(uint64_t*)0x200000000938 = 0;
  *(uint32_t*)0x200000000940 = 0;
  *(uint32_t*)0x200000000944 = 0;
  *(uint32_t*)0x200000000948 = 0;
  syscall(__NR_bpf, /*cmd=*/0xaul, /*arg=*/0x200000000900ul, /*size=*/0x9ful);
}
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;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}