// https://syzkaller.appspot.com/bug?id=d4463a2d3563cdc5823b22d4e115144d0af7e88c
// 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>

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[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0x0,
                 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  socket$nl_generic arguments: [
  //    domain: const = 0x10 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: const = 0x10 (4 bytes)
  //  ]
  //  returns sock_nl_generic
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0x10);
  if (res != -1)
    r[0] = res;
  //  sendmsg$nl_generic arguments: [
  //    fd: sock_nl_generic (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_t[netlink_random_msg_type,
  //    genlmsghdr, nl_generic_attr]]] {
  //      msghdr_netlink[netlink_msg_t[netlink_random_msg_type, genlmsghdr,
  //      nl_generic_attr]] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_t[netlink_random_msg_type,
  //        genlmsghdr, nl_generic_attr]]] {
  //          iovec[in, netlink_msg_t[netlink_random_msg_type, genlmsghdr,
  //          nl_generic_attr]] {
  //            addr: ptr[inout, array[ANYUNION]] {
  //              array[ANYUNION] {
  //                union ANYUNION {
  //                  ANYBLOB: buffer: {14 00 00 00 27 00 01 00 f6 ff 07 00 fe
  //                  db df 25 06 00 00 00 ed a7 94 35 fc 01 ba 22 ee be e2 55
  //                  f0 40 83 2d 6e 97 7b 4f 74 af d5 b5 40 95 f5 0c cb e8 3f
  //                  78 b2 64 a4 6e 94 ef ba 12 05 bf 7a 9e 0e ef 36 45 87 8d
  //                  32 db 75 47 d0 1e 53 d0 75 d7 6d 89 0e c7 aa 6a 9d a3 00
  //                  a1 4a dd ce 77 fa e0 6d 5f 3d 0a e4 d0 07 26 f5 7e 8c bd
  //                  27 e6 7a 83 13 d9 96 72 39 96 46 24 e6 82 01 04 72 6b 09
  //                  10 8f f2 58 b8 fc 0d 9a 12 1e fb 8f ef 8e ff 12 90 d1 bf
  //                  d7 b5 fe aa 61 60 9a 5c e7 a2 5a 6f 76 aa f2 fe 5c 90 c0
  //                  26 af 13 3a fa 85 3a 88 53 27 91 7d f3 b4 b1 b3 83 7d 9d
  //                  18 95 d1 65 e1 83 26 d9 3e 23 d7 0c f8 50 dd a5 c7 0b 2b
  //                  d8 7e 42 75 08 4f 9f a4 b3 19 e9 20 e4 74 1e 1b 50 1b 10
  //                  fc ee 01 2d 6a e4 8d e7 c2 f2 98 c0 e5 f1 37 76 b9 50 6a
  //                  a5 42 4a f9 96 23 ed d1 ae 1c b2 9f 84 6a 14 64 84 b9 c7
  //                  5e a1 a1 c3 25 a8 f6 4c e4 00 2d 8b db 38 60 a7 f6 f4 bb
  //                  0d c2 de 5f e0 7f 7b ec 78 ec f7 68 2a 4d 9e a2 d5 7b e2
  //                  92 4b c7 f8 3b 83 a9 ba 02 26 aa 41 bd 9e 31 62 39 c5 4a
  //                  19 c0 14 ff 08 bb 00 4d cb fe 9e 3b 39 14 8a ab b5 96 3e
  //                  6f 2a a9 10 29 20 68 2d} (length 0x158)
  //                }
  //              }
  //            }
  //            len: len = 0x14 (8 bytes)
  //          }
  //        }
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x4004805 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x20000090 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000100 = 0;
  *(uint32_t*)0x200000000108 = 0;
  *(uint64_t*)0x200000000110 = 0x200000000880;
  *(uint64_t*)0x200000000880 = 0x200000000380;
  memcpy(
      (void*)0x200000000380,
      "\x14\x00\x00\x00\x27\x00\x01\x00\xf6\xff\x07\x00\xfe\xdb\xdf\x25\x06\x00"
      "\x00\x00\xed\xa7\x94\x35\xfc\x01\xba\x22\xee\xbe\xe2\x55\xf0\x40\x83\x2d"
      "\x6e\x97\x7b\x4f\x74\xaf\xd5\xb5\x40\x95\xf5\x0c\xcb\xe8\x3f\x78\xb2\x64"
      "\xa4\x6e\x94\xef\xba\x12\x05\xbf\x7a\x9e\x0e\xef\x36\x45\x87\x8d\x32\xdb"
      "\x75\x47\xd0\x1e\x53\xd0\x75\xd7\x6d\x89\x0e\xc7\xaa\x6a\x9d\xa3\x00\xa1"
      "\x4a\xdd\xce\x77\xfa\xe0\x6d\x5f\x3d\x0a\xe4\xd0\x07\x26\xf5\x7e\x8c\xbd"
      "\x27\xe6\x7a\x83\x13\xd9\x96\x72\x39\x96\x46\x24\xe6\x82\x01\x04\x72\x6b"
      "\x09\x10\x8f\xf2\x58\xb8\xfc\x0d\x9a\x12\x1e\xfb\x8f\xef\x8e\xff\x12\x90"
      "\xd1\xbf\xd7\xb5\xfe\xaa\x61\x60\x9a\x5c\xe7\xa2\x5a\x6f\x76\xaa\xf2\xfe"
      "\x5c\x90\xc0\x26\xaf\x13\x3a\xfa\x85\x3a\x88\x53\x27\x91\x7d\xf3\xb4\xb1"
      "\xb3\x83\x7d\x9d\x18\x95\xd1\x65\xe1\x83\x26\xd9\x3e\x23\xd7\x0c\xf8\x50"
      "\xdd\xa5\xc7\x0b\x2b\xd8\x7e\x42\x75\x08\x4f\x9f\xa4\xb3\x19\xe9\x20\xe4"
      "\x74\x1e\x1b\x50\x1b\x10\xfc\xee\x01\x2d\x6a\xe4\x8d\xe7\xc2\xf2\x98\xc0"
      "\xe5\xf1\x37\x76\xb9\x50\x6a\xa5\x42\x4a\xf9\x96\x23\xed\xd1\xae\x1c\xb2"
      "\x9f\x84\x6a\x14\x64\x84\xb9\xc7\x5e\xa1\xa1\xc3\x25\xa8\xf6\x4c\xe4\x00"
      "\x2d\x8b\xdb\x38\x60\xa7\xf6\xf4\xbb\x0d\xc2\xde\x5f\xe0\x7f\x7b\xec\x78"
      "\xec\xf7\x68\x2a\x4d\x9e\xa2\xd5\x7b\xe2\x92\x4b\xc7\xf8\x3b\x83\xa9\xba"
      "\x02\x26\xaa\x41\xbd\x9e\x31\x62\x39\xc5\x4a\x19\xc0\x14\xff\x08\xbb\x00"
      "\x4d\xcb\xfe\x9e\x3b\x39\x14\x8a\xab\xb5\x96\x3e\x6f\x2a\xa9\x10\x29\x20"
      "\x68\x2d",
      344);
  *(uint64_t*)0x200000000888 = 0x14;
  *(uint64_t*)0x200000000118 = 1;
  *(uint64_t*)0x200000000120 = 0;
  *(uint64_t*)0x200000000128 = 0;
  *(uint32_t*)0x200000000130 = 0x4004805;
  syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x200000000100ul,
          /*f=MSG_FASTOPEN|MSG_PROBE|MSG_EOR*/ 0x20000090ul);
  //  socket arguments: [
  //    domain: socket_domain = 0x2a (8 bytes)
  //    type: socket_type = 0x2 (8 bytes)
  //    proto: int32 = 0x0 (4 bytes)
  //  ]
  //  returns sock
  res = syscall(__NR_socket, /*domain=AF_QIPCRTR*/ 0x2aul,
                /*type=SOCK_DGRAM*/ 2ul, /*proto=*/0);
  if (res != -1)
    r[1] = res;
  //  getsockname$packet arguments: [
  //    fd: sock_packet (resource)
  //    addr: ptr[out, sockaddr_ll] {
  //      sockaddr_ll {
  //        sll_family: const = 0x11 (2 bytes)
  //        sll_protocol: packet_protocols = 0x0 (2 bytes)
  //        sll_ifindex: ifindex (resource)
  //        sll_hatype: const = 0x1 (2 bytes)
  //        sll_pkttype: int8 = 0x0 (1 bytes)
  //        sll_halen: const = 0x6 (1 bytes)
  //        sll_addr: union mac_addr {
  //          broadcast: buffer: (DirOut)
  //        }
  //        pad: buffer: (DirOut)
  //      }
  //    }
  //    addrlen: ptr[inout, len] {
  //      len = 0x14 (4 bytes)
  //    }
  //  ]
  *(uint32_t*)0x200000001480 = 0x14;
  res = syscall(__NR_getsockname, /*fd=*/r[1], /*addr=*/0x200000000200ul,
                /*addrlen=*/0x200000001480ul);
  if (res != -1)
    r[2] = *(uint32_t*)0x200000000204;
  //  sendmsg$nl_route_sched arguments: [
  //    fd: sock_nl_route (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_route_sched]] {
  //      msghdr_netlink[netlink_msg_route_sched] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_route_sched]] {
  //          iovec[in, netlink_msg_route_sched] {
  //            addr: ptr[in, netlink_msg_route_sched] {
  //              union netlink_msg_route_sched {
  //                newqdisc: netlink_msg_t[const[RTM_NEWQDISC, int16],
  //                tcmsg[AF_UNSPEC], rtm_tca_policy] {
  //                  len: len = 0x2c (4 bytes)
  //                  type: const = 0x24 (2 bytes)
  //                  flags: netlink_msg_flags = 0xf0b (2 bytes)
  //                  seq: int32 = 0x0 (4 bytes)
  //                  pid: int32 = 0x0 (4 bytes)
  //                  payload: tcmsg[AF_UNSPEC] {
  //                    family: const = 0x0 (1 bytes)
  //                    tcm__pad1: const = 0x0 (1 bytes)
  //                    tcm__pad2: const = 0x0 (2 bytes)
  //                    ifindex: ifindex (resource)
  //                    tcm_handle: tcm_handle {
  //                      minor: tcm_handle_offsets = 0x0 (2 bytes)
  //                      major: tcm_handle_offsets = 0x0 (2 bytes)
  //                    }
  //                    tcm_parent: tcm_handle {
  //                      minor: tcm_handle_offsets = 0xffff (2 bytes)
  //                      major: tcm_handle_offsets = 0xffff (2 bytes)
  //                    }
  //                    tcm_info: tcm_handle {
  //                      minor: tcm_handle_offsets = 0x0 (2 bytes)
  //                      major: tcm_handle_offsets = 0x0 (2 bytes)
  //                    }
  //                  }
  //                  attrs: array[rtm_tca_policy] {
  //                    union rtm_tca_policy {
  //                      qdisc_kind_options: union qdisc_kind_options {
  //                        q_drr: nlattr_t[const[TCA_KIND, int16],
  //                        string["drr"]] {
  //                          nla_len: offsetof = 0x8 (2 bytes)
  //                          nla_type: const = 0x1 (2 bytes)
  //                          payload: buffer: {64 72 72 00} (length 0x4)
  //                          size: buffer: {} (length 0x0)
  //                        }
  //                      }
  //                    }
  //                  }
  //                }
  //              }
  //            }
  //            len: len = 0x2c (8 bytes)
  //          }
  //        }
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x0 (8 bytes)
  //  ]
  *(uint64_t*)0x2000000002c0 = 0;
  *(uint32_t*)0x2000000002c8 = 0;
  *(uint64_t*)0x2000000002d0 = 0x200000000280;
  *(uint64_t*)0x200000000280 = 0x200000000380;
  *(uint32_t*)0x200000000380 = 0x2c;
  *(uint16_t*)0x200000000384 = 0x24;
  *(uint16_t*)0x200000000386 = 0xf0b;
  *(uint32_t*)0x200000000388 = 0;
  *(uint32_t*)0x20000000038c = 0;
  *(uint8_t*)0x200000000390 = 0;
  *(uint8_t*)0x200000000391 = 0;
  *(uint16_t*)0x200000000392 = 0;
  *(uint32_t*)0x200000000394 = r[2];
  *(uint16_t*)0x200000000398 = 0;
  *(uint16_t*)0x20000000039a = 0;
  *(uint16_t*)0x20000000039c = -1;
  *(uint16_t*)0x20000000039e = -1;
  *(uint16_t*)0x2000000003a0 = 0;
  *(uint16_t*)0x2000000003a2 = 0;
  *(uint16_t*)0x2000000003a4 = 8;
  *(uint16_t*)0x2000000003a6 = 1;
  memcpy((void*)0x2000000003a8, "drr\000", 4);
  *(uint64_t*)0x200000000288 = 0x2c;
  *(uint64_t*)0x2000000002d8 = 1;
  *(uint64_t*)0x2000000002e0 = 0;
  *(uint64_t*)0x2000000002e8 = 0;
  *(uint32_t*)0x2000000002f0 = 0;
  syscall(__NR_sendmsg, /*fd=*/(intptr_t)-1, /*msg=*/0x2000000002c0ul,
          /*f=*/0ul);
  //  socket$netlink arguments: [
  //    domain: const = 0x10 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: netlink_proto = 0x0 (4 bytes)
  //  ]
  //  returns sock_netlink
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0);
  if (res != -1)
    r[3] = res;
  //  sendmmsg arguments: [
  //    fd: sock (resource)
  //    mmsg: ptr[in, array[send_mmsghdr]] {
  //      array[send_mmsghdr] {
  //      }
  //    }
  //    vlen: len = 0x40000000000009f (8 bytes)
  //    f: send_flags = 0x0 (8 bytes)
  //  ]
  syscall(__NR_sendmmsg, /*fd=*/r[3], /*mmsg=*/0x2000000002c0ul,
          /*vlen=*/0x40000000000009ful, /*f=*/0ul);
}
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;
}