// https://syzkaller.appspot.com/bug?id=df12e4be06dc87ca909200e67e2b2214bfc96288
// 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>

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

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  socket$inet_sctp arguments: [
  //    domain: const = 0x2 (8 bytes)
  //    type: sctp_socket_type = 0x1 (8 bytes)
  //    proto: const = 0x84 (4 bytes)
  //  ]
  //  returns sock_sctp
  res = syscall(__NR_socket, /*domain=*/2ul, /*type=SOCK_STREAM*/ 1ul,
                /*proto=*/0x84);
  if (res != -1)
    r[0] = res;
  //  setsockopt$IP_VS_SO_SET_ADD arguments: [
  //    fd: sock_in (resource)
  //    level: const = 0x0 (4 bytes)
  //    opt: const = 0x482 (4 bytes)
  //    val: ptr[in, ip_vs_service_user] {
  //      ip_vs_service_user {
  //        protocol: ipv6_types = 0x84 (2 bytes)
  //        pad = 0x0 (2 bytes)
  //        addr: union ipv4_addr {
  //          broadcast: const = 0xffffffff (4 bytes)
  //        }
  //        port: int16be = 0x4e21 (2 bytes)
  //        pad = 0x0 (2 bytes)
  //        fwmark: int32 = 0x3 (4 bytes)
  //        sched_name: buffer: {72 72 00 00 00 00 00 00 00 00 00 00 00 00 00
  //        00} (length 0x10) flags: ip_vs_flags = 0x1 (4 bytes) timeout: int32
  //        = 0x10000004 (4 bytes) netmask: int32be = 0x8 (4 bytes)
  //      }
  //    }
  //    len: len = 0x2c (8 bytes)
  //  ]
  *(uint16_t*)0x200000000040 = 0x84;
  *(uint32_t*)0x200000000044 = htobe32(-1);
  *(uint16_t*)0x200000000048 = htobe16(0x4e21);
  *(uint32_t*)0x20000000004c = 3;
  memcpy((void*)0x200000000050,
         "rr\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 16);
  *(uint32_t*)0x200000000060 = 1;
  *(uint32_t*)0x200000000064 = 0x10000004;
  *(uint32_t*)0x200000000068 = htobe32(8);
  syscall(__NR_setsockopt, /*fd=*/r[0], /*level=*/0, /*opt=*/0x482,
          /*val=*/0x200000000040ul, /*len=*/0x2cul);
  //  socket$kcm arguments: [
  //    domain: const = 0xa (8 bytes)
  //    type: kcm_socket_type = 0x2 (8 bytes)
  //    proto: const = 0x0 (4 bytes)
  //  ]
  //  returns sock_kcm
  res = syscall(__NR_socket, /*domain=*/0xaul, /*type=SOCK_DGRAM*/ 2ul,
                /*proto=*/0);
  if (res != -1)
    r[1] = res;
  //  setsockopt$IP_VS_SO_SET_ADDDEST arguments: [
  //    fd: sock_in (resource)
  //    level: const = 0x0 (4 bytes)
  //    opt: const = 0x487 (4 bytes)
  //    val: ptr[in, ip_vs_svcdest_user] {
  //      ip_vs_svcdest_user {
  //        s: ip_vs_service_user {
  //          protocol: ipv6_types = 0x84 (2 bytes)
  //          pad = 0x0 (2 bytes)
  //          addr: union ipv4_addr {
  //            private: int32be = 0xa010101 (4 bytes)
  //          }
  //          port: int16be = 0x4e21 (2 bytes)
  //          pad = 0x0 (2 bytes)
  //          fwmark: int32 = 0x3 (4 bytes)
  //          sched_name: buffer: {77 72 72 00 00 00 00 00 00 00 00 00 00 00 00
  //          00} (length 0x10) flags: ip_vs_flags = 0x23 (4 bytes) timeout:
  //          int32 = 0x80 (4 bytes) netmask: int32be = 0x5d (4 bytes)
  //        }
  //        d: ip_vs_dest_user {
  //          addr: union ipv4_addr {
  //            dev: ipv4_addr_t[netdev_addr_id] {
  //              a0: const = 0xac (1 bytes)
  //              a1: const = 0x14 (1 bytes)
  //              a2: const = 0x14 (1 bytes)
  //              a3: int8 = 0x43 (1 bytes)
  //            }
  //          }
  //          port: int16be = 0x4e24 (2 bytes)
  //          pad = 0x0 (2 bytes)
  //          conn_flags: ipvs_conn_flags = 0x4 (4 bytes)
  //          weight: int32 = 0x1cb (4 bytes)
  //          u_threshold: int32 = 0x12d61 (4 bytes)
  //          l_threshold: int32 = 0x5 (4 bytes)
  //        }
  //      }
  //    }
  //    len: len = 0x44 (8 bytes)
  //  ]
  *(uint16_t*)0x200000000000 = 0x84;
  *(uint32_t*)0x200000000004 = htobe32(0xa010101);
  *(uint16_t*)0x200000000008 = htobe16(0x4e21);
  *(uint32_t*)0x20000000000c = 3;
  memcpy((void*)0x200000000010,
         "wrr\000\000\000\000\000\000\000\000\000\000\000\000\000", 16);
  *(uint32_t*)0x200000000020 = 0x23;
  *(uint32_t*)0x200000000024 = 0x80;
  *(uint32_t*)0x200000000028 = htobe32(0x5d);
  *(uint8_t*)0x20000000002c = 0xac;
  *(uint8_t*)0x20000000002d = 0x14;
  *(uint8_t*)0x20000000002e = 0x14;
  *(uint8_t*)0x20000000002f = 0x43;
  *(uint16_t*)0x200000000030 = htobe16(0x4e24);
  *(uint32_t*)0x200000000034 = 4;
  *(uint32_t*)0x200000000038 = 0x1cb;
  *(uint32_t*)0x20000000003c = 0x12d61;
  *(uint32_t*)0x200000000040 = 5;
  syscall(__NR_setsockopt, /*fd=*/r[0], /*level=*/0, /*opt=*/0x487,
          /*val=*/0x200000000000ul, /*len=*/0x44ul);
  //  sendmsg$sock arguments: [
  //    fd: sock (resource)
  //    msg: ptr[in, msghdr_sock] {
  //      msghdr_sock {
  //        msg_name: ptr[in, sockaddr_storage] {
  //          union sockaddr_storage {
  //            in6: sockaddr_in6 {
  //              family: const = 0x2 (2 bytes)
  //              port: int16be = 0x4e22 (2 bytes)
  //              flow: int32be = 0x0 (4 bytes)
  //              addr: 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)
  //                }
  //              }
  //              scope: int32 = 0xfffffeec (4 bytes)
  //            }
  //          }
  //        }
  //        msg_namelen: len = 0x80 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        msg_iov: nil
  //        msg_iovlen: len = 0x0 (8 bytes)
  //        msg_control: ptr[in, array[cmsghdr_sock]] {
  //          array[cmsghdr_sock] {
  //            union cmsghdr_sock {
  //              mark: cmsghdr_t[SOL_SOCKET, SO_MARK, int32] {
  //                unaligned: cmsghdr_unaligned[SOL_SOCKET, SO_MARK, int32] {
  //                  cmsg_len: len = 0x14 (8 bytes)
  //                  cmsg_level: const = 0x1 (4 bytes)
  //                  cmsg_type: const = 0x24 (4 bytes)
  //                  data: int32 = 0x3 (4 bytes)
  //                }
  //                pad = 0x0 (4 bytes)
  //              }
  //            }
  //          }
  //        }
  //        msg_controllen: bytesize = 0x18 (8 bytes)
  //        msg_flags: const = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x0 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000400 = 0x200000000580;
  *(uint16_t*)0x200000000580 = 2;
  *(uint16_t*)0x200000000582 = htobe16(0x4e22);
  *(uint32_t*)0x200000000584 = htobe32(0);
  *(uint8_t*)0x200000000588 = 0xfe;
  *(uint8_t*)0x200000000589 = 0x80;
  memset((void*)0x20000000058a, 0, 13);
  *(uint8_t*)0x200000000597 = 0;
  *(uint32_t*)0x200000000598 = 0xfffffeec;
  *(uint32_t*)0x200000000408 = 0x80;
  *(uint64_t*)0x200000000410 = 0;
  *(uint64_t*)0x200000000418 = 0;
  *(uint64_t*)0x200000000420 = 0x200000000000;
  *(uint64_t*)0x200000000000 = 0x14;
  *(uint32_t*)0x200000000008 = 1;
  *(uint32_t*)0x20000000000c = 0x24;
  *(uint32_t*)0x200000000010 = 3;
  *(uint64_t*)0x200000000428 = 0x18;
  *(uint32_t*)0x200000000430 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[1], /*msg=*/0x200000000400ul, /*f=*/0ul);
}
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;
  loop();
  return 0;
}