// https://syzkaller.appspot.com/bug?id=df466e1151a7e45dd880d8c7033f1ad48acebfb4
// 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_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;
}

const int kInitNetNsFd = 201;

static long syz_init_net_socket(volatile long domain, volatile long type,
                                volatile long proto)
{
  return syscall(__NR_socket, domain, type, proto);
}

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[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  setsockopt$inet6_IPV6_XFRM_POLICY arguments: [
  //    fd: sock_in6 (resource)
  //    level: const = 0x29 (4 bytes)
  //    optname: const = 0x43 (4 bytes)
  //    optval: ptr[in, xfrm_filter] {
  //      xfrm_filter {
  //        info: xfrm_userpolicy_info {
  //          sel: xfrm_selector {
  //            daddr: union xfrm_address_t {
  //              in: union ipv4_addr {
  //                broadcast: const = 0xffffffff (4 bytes)
  //              }
  //            }
  //            saddr: union xfrm_address_t {
  //              in6: union ipv6_addr {
  //                dev: ipv6_addr_t[netdev_addr_id] {
  //                  a0: const = 0xfe (1 bytes)
  //                  a1: const = 0x80 (1 bytes)
  //                  a2: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00}
  //                  (length 0xd) a3: int8 = 0x0 (1 bytes)
  //                }
  //              }
  //            }
  //            dport: int16be = 0x0 (2 bytes)
  //            dport_mask: int16be = 0x0 (2 bytes)
  //            sport: int16be = 0x0 (2 bytes)
  //            sport_mask: int16be = 0x0 (2 bytes)
  //            family: xfrm_family = 0x0 (2 bytes)
  //            prefixlen_d: xfrm_prefixlens = 0x0 (1 bytes)
  //            prefixlen_s: xfrm_prefixlens = 0x0 (1 bytes)
  //            proto: ipv6_types = 0x0 (1 bytes)
  //            pad = 0x0 (3 bytes)
  //            ifindex: ifindex (resource)
  //            user: uid (resource)
  //          }
  //          lft: xfrm_lifetime_cfg {
  //            soft_byte_limit: int64 = 0x0 (8 bytes)
  //            hard_byte_limit: int64 = 0x0 (8 bytes)
  //            soft_packet_limit: int64 = 0x0 (8 bytes)
  //            hard_packet_limit: int64 = 0x0 (8 bytes)
  //            soft_add_expires_seconds: int64 = 0x0 (8 bytes)
  //            hard_add_expires_seconds: int64 = 0x0 (8 bytes)
  //            soft_use_expires_seconds: int64 = 0x0 (8 bytes)
  //            hard_use_expires_seconds: int64 = 0x0 (8 bytes)
  //          }
  //          curlft: xfrm_lifetime_cur {
  //            bytes: int64 = 0x0 (8 bytes)
  //            packets: int64 = 0x0 (8 bytes)
  //            add_time: int64 = 0x0 (8 bytes)
  //            use_time: int64 = 0x0 (8 bytes)
  //          }
  //          priority: int32 = 0x0 (4 bytes)
  //          index: int32 = 0x0 (4 bytes)
  //          dir: xfrm_policy_dir = 0x0 (1 bytes)
  //          action: xfrm_policy_actions = 0x0 (1 bytes)
  //          flags: xfrm_policy_flags = 0x0 (1 bytes)
  //          share: xfrm_policy_shares = 0x0 (1 bytes)
  //          pad = 0x0 (4 bytes)
  //        }
  //        tmpl: xfrm_user_tmpl {
  //          id: xfrm_id {
  //            daddr: union xfrm_address_t {
  //              in6: union ipv6_addr {
  //                empty: ipv6_addr_empty {
  //                  a0: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //                  00} (length 0x10)
  //                }
  //              }
  //            }
  //            spi: int32be = 0x0 (4 bytes)
  //            proto: xfrm_proto = 0x0 (1 bytes)
  //            pad = 0x0 (3 bytes)
  //          }
  //          family: xfrm_family = 0x0 (2 bytes)
  //          pad = 0x0 (2 bytes)
  //          saddr: union xfrm_address_t {
  //            in6: union ipv6_addr {
  //              private1: ipv6_addr_private[1] {
  //                a0: const = 0xfc (1 bytes)
  //                a1: const = 0x1 (1 bytes)
  //                a2: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00} (length
  //                0xd) a3: int8 = 0x0 (1 bytes)
  //              }
  //            }
  //          }
  //          reqid: int32 = 0x0 (4 bytes)
  //          mode: xfrm_mode = 0x0 (1 bytes)
  //          share: xfrm_policy_shares = 0x0 (1 bytes)
  //          optional: int8 = 0x0 (1 bytes)
  //          pad = 0x0 (1 bytes)
  //          aalgos: int32 = 0x0 (4 bytes)
  //          ealgos: int32 = 0x0 (4 bytes)
  //          calgos: int32 = 0x0 (4 bytes)
  //        }
  //      }
  //    }
  //    optlen: len = 0xe8 (8 bytes)
  //  ]
  *(uint32_t*)0x200000000340 = htobe32(-1);
  *(uint8_t*)0x200000000350 = 0xfe;
  *(uint8_t*)0x200000000351 = 0x80;
  memset((void*)0x200000000352, 0, 13);
  *(uint8_t*)0x20000000035f = 0;
  *(uint16_t*)0x200000000360 = htobe16(0);
  *(uint16_t*)0x200000000362 = htobe16(0);
  *(uint16_t*)0x200000000364 = htobe16(0);
  *(uint16_t*)0x200000000366 = htobe16(0);
  *(uint16_t*)0x200000000368 = 0;
  *(uint8_t*)0x20000000036a = 0;
  *(uint8_t*)0x20000000036b = 0;
  *(uint8_t*)0x20000000036c = 0;
  *(uint32_t*)0x200000000370 = 0;
  *(uint32_t*)0x200000000374 = 0;
  *(uint64_t*)0x200000000378 = 0;
  *(uint64_t*)0x200000000380 = 0;
  *(uint64_t*)0x200000000388 = 0;
  *(uint64_t*)0x200000000390 = 0;
  *(uint64_t*)0x200000000398 = 0;
  *(uint64_t*)0x2000000003a0 = 0;
  *(uint64_t*)0x2000000003a8 = 0;
  *(uint64_t*)0x2000000003b0 = 0;
  *(uint64_t*)0x2000000003b8 = 0;
  *(uint64_t*)0x2000000003c0 = 0;
  *(uint64_t*)0x2000000003c8 = 0;
  *(uint64_t*)0x2000000003d0 = 0;
  *(uint32_t*)0x2000000003d8 = 0;
  *(uint32_t*)0x2000000003dc = 0;
  *(uint8_t*)0x2000000003e0 = 0;
  *(uint8_t*)0x2000000003e1 = 0;
  *(uint8_t*)0x2000000003e2 = 0;
  *(uint8_t*)0x2000000003e3 = 0;
  memset((void*)0x2000000003e8, 0, 16);
  *(uint32_t*)0x2000000003f8 = htobe32(0);
  *(uint8_t*)0x2000000003fc = 0;
  *(uint16_t*)0x200000000400 = 0;
  *(uint8_t*)0x200000000404 = 0xfc;
  *(uint8_t*)0x200000000405 = 1;
  memset((void*)0x200000000406, 0, 13);
  *(uint8_t*)0x200000000413 = 0;
  *(uint32_t*)0x200000000414 = 0;
  *(uint8_t*)0x200000000418 = 0;
  *(uint8_t*)0x200000000419 = 0;
  *(uint8_t*)0x20000000041a = 0;
  *(uint32_t*)0x20000000041c = 0;
  *(uint32_t*)0x200000000420 = 0;
  *(uint32_t*)0x200000000424 = 0;
  syscall(__NR_setsockopt, /*fd=*/(intptr_t)-1, /*level=*/0x29,
          /*optname=*/0x43, /*optval=*/0x200000000340ul, /*optlen=*/0xe8ul);
  //  openat$nci arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    file: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 76 69 72 74 75 61 6c 5f 6e 63 69 00} (length
  //      0x11)
  //    }
  //    flags: const = 0x2 (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns fd_nci
  memcpy((void*)0x200000000240, "/dev/virtual_nci\000", 17);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul,
                /*file=*/0x200000000240ul, /*flags=*/2, /*mode=*/0);
  if (res != -1)
    r[0] = res;
  //  write$nci arguments: [
  //    fd: fd_nci (resource)
  //    data: nil
  //    len: bytesize = 0xc (8 bytes)
  //  ]
  syscall(__NR_write, /*fd=*/r[0], /*data=*/0ul, /*len=*/0xcul);
  //  bpf$MAP_CREATE arguments: [
  //    cmd: const = 0x0 (8 bytes)
  //    arg: nil
  //    size: len = 0x50 (8 bytes)
  //  ]
  //  returns fd_bpf_map
  syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0ul, /*size=*/0x50ul);
  //  bpf$BPF_BTF_LOAD arguments: [
  //    cmd: const = 0x12 (8 bytes)
  //    arg: nil
  //    size: len = 0x0 (8 bytes)
  //  ]
  //  returns fd_btf
  syscall(__NR_bpf, /*cmd=*/0x12ul, /*arg=*/0ul, /*size=*/0ul);
  //  bpf$BPF_BTF_GET_FD_BY_ID arguments: [
  //    cmd: const = 0x13 (8 bytes)
  //    arg: ptr[in, bpf_btf_id] {
  //      bpf_btf_id (resource)
  //    }
  //    size: len = 0x4 (8 bytes)
  //  ]
  //  returns fd_btf
  *(uint32_t*)0x200000000400 = 0;
  syscall(__NR_bpf, /*cmd=*/0x13ul, /*arg=*/0x200000000400ul, /*size=*/4ul);
  //  syz_init_net_socket$nl_generic arguments: [
  //    domain: const = 0x10 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: const = 0x10 (8 bytes)
  //  ]
  //  returns sock_nl_generic_init
  res = -1;
  res = syz_init_net_socket(/*domain=*/0x10, /*type=*/3, /*proto=*/0x10);
  if (res != -1)
    r[1] = res;
  //  sendmsg$NFC_CMD_START_POLL arguments: [
  //    fd: sock_nl_generic_init (resource)
  //    msg: nil
  //    f: send_flags = 0x40 (8 bytes)
  //  ]
  syscall(__NR_sendmsg, /*fd=*/r[1], /*msg=*/0ul, /*f=MSG_DONTWAIT*/ 0x40ul);
}
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;
}