syzkaller-repros/linux/9fb2f5b37bf4428382334e336bbbb201634c7c4c.c

// WARNING in xfrm_state_fini
// https://syzkaller.appspot.com/bug?id=9fb2f5b37bf4428382334e336bbbb201634c7c4c
// status:open
// 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);
  int i;
  for (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) {
  }
}

#define SYZ_HAVE_SETUP_TEST 1
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;
  for (iter = 0;; 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 (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      if (current_time_ms() - start < 5 * 1000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

#ifndef __NR_sched_setattr
#define __NR_sched_setattr 314
#endif

uint64_t r[1] = {0xffffffffffffffff};

void execute_one(void)
{
  long res = 0;
  *(uint32_t*)0x20000000 = 0;
  *(uint32_t*)0x20000004 = 6;
  *(uint64_t*)0x20000008 = 0;
  *(uint32_t*)0x20000010 = 0;
  *(uint32_t*)0x20000014 = 0;
  *(uint64_t*)0x20000018 = 0x9917;
  *(uint64_t*)0x20000020 = 0xffff;
  *(uint64_t*)0x20000028 = 0;
  syscall(__NR_sched_setattr, 0, 0x20000000, 0);
  syscall(__NR_unshare, 0x40000000);
  res = syscall(__NR_socket, 0x10, 3, 6);
  if (res != -1)
    r[0] = res;
  *(uint64_t*)0x20000100 = 0;
  *(uint32_t*)0x20000108 = 0;
  *(uint64_t*)0x20000110 = 0x200000c0;
  *(uint64_t*)0x200000c0 = 0x200002c0;
  *(uint32_t*)0x200002c0 = 0x104;
  *(uint16_t*)0x200002c4 = 0x10;
  *(uint16_t*)0x200002c6 = 0x205;
  *(uint32_t*)0x200002c8 = 0;
  *(uint32_t*)0x200002cc = 0;
  *(uint8_t*)0x200002d0 = -1;
  *(uint8_t*)0x200002d1 = 1;
  *(uint8_t*)0x200002d2 = -1;
  *(uint8_t*)0x200002d3 = 0;
  *(uint8_t*)0x200002d4 = 0;
  *(uint8_t*)0x200002d5 = 0;
  *(uint8_t*)0x200002d6 = 0;
  *(uint8_t*)0x200002d7 = 0;
  *(uint8_t*)0x200002d8 = 0;
  *(uint8_t*)0x200002d9 = 0;
  *(uint8_t*)0x200002da = 0;
  *(uint8_t*)0x200002db = 0;
  *(uint8_t*)0x200002dc = 0;
  *(uint8_t*)0x200002dd = 0;
  *(uint8_t*)0x200002de = 0;
  *(uint8_t*)0x200002df = 1;
  *(uint32_t*)0x200002e0 = htobe32(0x7f000001);
  *(uint16_t*)0x200002f0 = htobe16(0);
  *(uint16_t*)0x200002f2 = htobe16(0);
  *(uint16_t*)0x200002f4 = htobe16(0);
  *(uint16_t*)0x200002f6 = htobe16(0);
  *(uint16_t*)0x200002f8 = 0;
  *(uint8_t*)0x200002fa = 0;
  *(uint8_t*)0x200002fb = 0;
  *(uint8_t*)0x200002fc = 0;
  *(uint32_t*)0x20000300 = 0;
  *(uint32_t*)0x20000304 = 0;
  *(uint8_t*)0x20000308 = 0xac;
  *(uint8_t*)0x20000309 = 0x14;
  *(uint8_t*)0x2000030a = 0x14;
  *(uint8_t*)0x2000030b = 0xbb;
  *(uint32_t*)0x20000318 = htobe32(0);
  *(uint8_t*)0x2000031c = 0x2b;
  *(uint32_t*)0x20000320 = htobe32(0xe0000001);
  *(uint64_t*)0x20000330 = 0;
  *(uint64_t*)0x20000338 = 0;
  *(uint64_t*)0x20000340 = 0;
  *(uint64_t*)0x20000348 = 0;
  *(uint64_t*)0x20000350 = 0;
  *(uint64_t*)0x20000358 = 0;
  *(uint64_t*)0x20000360 = 0;
  *(uint64_t*)0x20000368 = 0;
  *(uint64_t*)0x20000370 = 0;
  *(uint64_t*)0x20000378 = 0;
  *(uint64_t*)0x20000380 = 0;
  *(uint64_t*)0x20000388 = 0;
  *(uint32_t*)0x20000390 = 0;
  *(uint32_t*)0x20000394 = 0;
  *(uint32_t*)0x20000398 = 0;
  *(uint32_t*)0x2000039c = 0;
  *(uint32_t*)0x200003a0 = 0;
  *(uint16_t*)0x200003a4 = 0xa;
  *(uint8_t*)0x200003a6 = 2;
  *(uint8_t*)0x200003a7 = 0;
  *(uint8_t*)0x200003a8 = 0;
  *(uint16_t*)0x200003b0 = 0x14;
  *(uint16_t*)0x200003b2 = 0xe;
  *(uint8_t*)0x200003b4 = 0xfe;
  *(uint8_t*)0x200003b5 = 0x80;
  *(uint8_t*)0x200003b6 = 0;
  *(uint8_t*)0x200003b7 = 0;
  *(uint8_t*)0x200003b8 = 0;
  *(uint8_t*)0x200003b9 = 0;
  *(uint8_t*)0x200003ba = 0;
  *(uint8_t*)0x200003bb = 0;
  *(uint8_t*)0x200003bc = 0;
  *(uint8_t*)0x200003bd = 0;
  *(uint8_t*)0x200003be = 0;
  *(uint8_t*)0x200003bf = 0;
  *(uint8_t*)0x200003c0 = 0;
  *(uint8_t*)0x200003c1 = 0;
  *(uint8_t*)0x200003c2 = 0;
  *(uint8_t*)0x200003c3 = 0;
  *(uint64_t*)0x200000c8 = 0x104;
  *(uint64_t*)0x20000118 = 1;
  *(uint64_t*)0x20000120 = 0;
  *(uint64_t*)0x20000128 = 0;
  *(uint32_t*)0x20000130 = 0;
  syscall(__NR_sendmsg, r[0], 0x20000100, 0);
}
int main(void)
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  loop();
  return 0;
}