// https://syzkaller.appspot.com/bug?id=93389742321a26855072ae4c7c97d10f6853e6ba
// 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_fsconfig
#define __NR_fsconfig 431
#endif
#ifndef __NR_fsopen
#define __NR_fsopen 430
#endif

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");
}

#define KMEMLEAK_FILE "/sys/kernel/debug/kmemleak"

static const char* setup_leak()
{
  if (!write_file(KMEMLEAK_FILE, "scan=off")) {
    if (errno == EBUSY)
      return "KMEMLEAK disabled: increase CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE"
             " or unset CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF";
    return "failed to write(kmemleak, \"scan=off\")";
  }
  if (!write_file(KMEMLEAK_FILE, "scan"))
    return "failed to write(kmemleak, \"scan\")";
  sleep(5);
  if (!write_file(KMEMLEAK_FILE, "scan"))
    return "failed to write(kmemleak, \"scan\")";
  if (!write_file(KMEMLEAK_FILE, "clear"))
    return "failed to write(kmemleak, \"clear\")";
  return NULL;
}

static void check_leaks(void)
{
  int fd = open(KMEMLEAK_FILE, O_RDWR);
  if (fd == -1)
    exit(1);
  uint64_t start = current_time_ms();
  if (write(fd, "scan", 4) != 4)
    exit(1);
  sleep(1);
  while (current_time_ms() - start < 4 * 1000)
    sleep(1);
  if (write(fd, "scan", 4) != 4)
    exit(1);
  static char buf[128 << 10];
  ssize_t n = read(fd, buf, sizeof(buf) - 1);
  if (n < 0)
    exit(1);
  int nleaks = 0;
  if (n != 0) {
    sleep(1);
    if (write(fd, "scan", 4) != 4)
      exit(1);
    if (lseek(fd, 0, SEEK_SET) < 0)
      exit(1);
    n = read(fd, buf, sizeof(buf) - 1);
    if (n < 0)
      exit(1);
    buf[n] = 0;
    char* pos = buf;
    char* end = buf + n;
    while (pos < end) {
      char* next = strstr(pos + 1, "unreferenced object");
      if (!next)
        next = end;
      char prev = *next;
      *next = 0;
      fprintf(stderr, "BUG: memory leak\n%s\n", pos);
      *next = prev;
      pos = next;
      nleaks++;
    }
  }
  if (write(fd, "clear", 5) != 5)
    exit(1);
  close(fd);
  if (nleaks)
    exit(1);
}

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;
    }
    check_leaks();
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  fsopen arguments: [
  //    type: ptr[in, buffer] {
  //      buffer: {63 69 66 73 00} (length 0x5)
  //    }
  //    flags: fsopen_flags = 0x0 (8 bytes)
  //  ]
  //  returns fd_fscontext
  memcpy((void*)0x200000000000, "cifs\000", 5);
  res = syscall(__NR_fsopen, /*type=*/0x200000000000ul, /*flags=*/0ul);
  if (res != -1)
    r[0] = res;
  //  fsconfig$FSCONFIG_SET_STRING arguments: [
  //    fd: fd_fscontext (resource)
  //    cmd: const = 0x1 (8 bytes)
  //    key: ptr[in, buffer] {
  //      buffer: {73 6f 75 72 63 65} (length 0x6)
  //    }
  //    value: ptr[in, buffer] {
  //      buffer: {2f 2f f2 2f 06 08 2f df 2f 6f dc ea 95 9a 82 10 97 57 8f 37
  //      98 9b 5c 2f 5c f9 0d 6d 44 94 29 55 db 15 58 2e 49 0a 7d f3 9d e4 5f
  //      05 9c 71 66 34 49 5e 23 62 3f 39 de af 75 27 83 4c e0 97 e1 6e 5f a4
  //      25 b1 97 93 af 76 ce 2f 5c b4 4c f2 5f a7 fb f4 84 1f 41 ea 73 5e ef
  //      a2 85 a3 21 fb 93 d7 52 ab 32 1e 57 e9 68 9b f7 75 6c f9 44 d4 82 58
  //      35 13 aa 87 f9 ba a9 6d 14 14 52 5f 9a 5c 3e 34 ce 8e 5f 23 f8 44 b1
  //      de 70 01 cc 3a a6 c5 6e eb ab f7 30 99 ef 8b 3c 4d 0a c0 60 5b 82 f6
  //      24 a4 be 1e d3 e4 d9 4c 14 ed cf cb 92 f1 83 1a 31 a6 f3 65 c2 46 c3
  //      00 aa d5 fc 1b 52 a9 8c b4 26 9f a2 24 06 1a b0 57 23 f4 de 36 04 63
  //      c0 ee 63 a0 6c d5 64 e5 cd b2 c1 30 97 77 87 e5 06 91 57 0d 72 f5 97
  //      25 e8 70 4f eb 5d c2 98 43 ff 4b a0 b3 5c 99 7b cd 52 92 94 f7 1d 01
  //      51 1a bd 15 62 15 68 e2 21 00 b9 7a 29 19 00 ee d2 29 5b 70 60 b3 03
  //      a7 70 27 58 ec cd 6f 58 05 ff ff 2f 6f b2 ad b8 89 69 40 0c ff 53 26
  //      8a c9 fe 7a c2 90 e7 46 a6 db 0d 03 6a 2c 4e e1 6c 77 0a ad e8 f0 bd
  //      a1 98 ce f9 1e 52 9c 63 c5 6b 65 5f a7 11 22 04 d8 2e a0 15 83 f1 92
  //      db 79 e9 dc 40 2e c1 67 c6 0c 63 a2 36 d8 df ef f7 9c 1a cc 8a 6d 8b
  //      37 cf c5 a6 f4 0c ab 6a 25 59 a9 dd 0e 39 65 b5 ec 99 40 d2 09 0a b1
  //      6f} (length 0x185)
  //    }
  //    aux: const = 0x0 (8 bytes)
  //  ]
  memcpy((void*)0x200000000040, "source", 6);
  memcpy((void*)0x200000005fc0,
         "//\362/\006\b/\337/o\334\352\225\232\202\020\227W\2177\230\233\\/"
         "\\\371\rmD\224)U\333\025X.I\n}\363\235\344_\005\234qf4I^#b?"
         "9\336\257u\'\203L\340\227\341n_\244%\261\227\223\257v\316/"
         "\\\264L\362_\247\373\364\204\037A\352s^\357\242\205\243!"
         "\373\223\327R\2532\036W\351h\233\367ul\371D\324\202X5\023\252\207\371"
         "\272\251m\024\024R_\232\\>4\316\216_#\370D\261\336p\001\314:"
         "\246\305n\353\253\3670\231\357\213<M\n\300`[\202\366$"
         "\244\276\036\323\344\331L\024\355\317\313\222\361\203\0321\246\363e"
         "\302F\303\000\252\325\374\033R\251\214\264&\237\242$\006\032\260W#"
         "\364\3366\004c\300\356c\240l\325d\345\315\262\3010\227w\207\345\006"
         "\221W\rr\365\227%\350pO\353]\302\230C\377K\240\263\\\231{"
         "\315R\222\224\367\035\001Q\032\275\025b\025h\342!\000\271z)"
         "\031\000\356\322)[p`\263\003\247p\'X\354\315oX\005\377\377/"
         "o\262\255\270\211i@\f\377S&\212\311\376z\302\220\347F\246\333\r\003j,"
         "N\341lw\n\255\350\360\275\241\230\316\371\036R\234c\305ke_"
         "\247\021\"\004\330.\240\025\203\361\222\333y\351\334@."
         "\301g\306\fc\2426\330\337\357\367\234\032\314\212m\2137\317\305\246"
         "\364\f\253j%Y\251\335\0169e\265\354\231@\322\t\n\261o",
         389);
  syscall(__NR_fsconfig, /*fd=*/r[0], /*cmd=*/1ul, /*key=*/0x200000000040ul,
          /*value=*/0x200000005fc0ul, /*aux=*/0ul);
  //  fsconfig$FSCONFIG_SET_STRING arguments: [
  //    fd: fd_fscontext (resource)
  //    cmd: const = 0x1 (8 bytes)
  //    key: ptr[in, buffer] {
  //      buffer: {73 6f 75 72 63 65} (length 0x6)
  //    }
  //    value: ptr[in, buffer] {
  //      buffer: {2f 2f f2 2f 06 08 a3 30 5c 6f dc ea 95 9a 82 10 97 57 8f 37
  //      98 9b 5c 2f 5c f9 0d 6d 44 94 29 55 db 15 58 2e 49 0a 7d f3 9d e4 5f
  //      05 9c 71 66 34 49 5e 23 62 3f 39 de af 75 27 83 4c e0 97 e1 6e 5f a4
  //      25 b1 97 93 af 76 ce 2f 5c b4 4c f2 5f a7 fb f4 84 1f 41 ea 73 9d 14
  //      e3 0b a3 21 fb 93 d7 52 ab 32 1e 57 e9 68 9b f7 47 6c f9 44 d4 82 58
  //      35 13 aa 87 f9 ba a9 6d 14 14 52 5f 9a 5c 3e 34 ce 8e 5f 23 f8 44 b1
  //      de 70 01 cc 3a a6 c5 6e eb ab f7 30 99 ef 8b 3c 4d 0a c0 60 5b 82 f6
  //      24 a4 be 1e d3 e4 d9 4c 14 ed cf 4b cc eb 2c 1a 31 a6 f3 65 c2 46 c3
  //      00 aa d5 fc 1b 52 a9 8c b4 26 9f a2 24 06 1a b0 57 23 f4 de 36 04 63
  //      c0 ee 63 a0 6c d5 64 e5 cd b2 c1 30 97 77 87 e5 06 91 57 0d 72 f5 97
  //      25 e8 70 4f eb 5d c2 98 43 ff 4b a0 b3 5c 99 7b cd 52 92 94 f7 1d 01
  //      51 1a bd 15 62 15 68 e2 21 00 b9 7a 29 19 00 ee d2 29 5b 70 60 b3 03
  //      a7 70 27 58 ec cd 6f 58 05 ff ff 2f 6f b2 ad b8 89 69 40 0c ff 53 26
  //      8a c9 fe 7a c2 90 e7 46 a6 db 0d 03 6a 2c 4e e1 6c 77 0a ad e8 f0 bd
  //      a1 98 ce f9 1e 52 9c 63 c5 6b 65 5f a7 11 22 04 d8 2e a0 15 83 f1 92
  //      db 79 e9 dc 40 2e c1 67 c6 0c 63 a2 36 d8 df ef f7 9c 1a cc 8a 6d 8b
  //      37 cf c5 a6 f4 0c ab 6a 25 59 a9 dd 0e 39 65 b5 ec 99 40 d2 09 0a b1
  //      6f} (length 0x185)
  //    }
  //    aux: const = 0x0 (8 bytes)
  //  ]
  memcpy((void*)0x200000000400, "source", 6);
  memcpy((void*)0x200000000240,
         "//\362/\006\b\2430\\o\334\352\225\232\202\020\227W\2177\230\233\\/"
         "\\\371\rmD\224)U\333\025X.I\n}\363\235\344_\005\234qf4I^#b?"
         "9\336\257u\'\203L\340\227\341n_\244%\261\227\223\257v\316/"
         "\\\264L\362_\247\373\364\204\037A\352s\235\024\343\v\243!"
         "\373\223\327R\2532\036W\351h\233\367Gl\371D\324\202X5\023\252\207\371"
         "\272\251m\024\024R_\232\\>4\316\216_#\370D\261\336p\001\314:"
         "\246\305n\353\253\3670\231\357\213<M\n\300`[\202\366$"
         "\244\276\036\323\344\331L\024\355\317K\314\353,"
         "\0321\246\363e\302F\303\000\252\325\374\033R\251\214\264&\237\242$"
         "\006\032\260W#"
         "\364\3366\004c\300\356c\240l\325d\345\315\262\3010\227w\207\345\006"
         "\221W\rr\365\227%\350pO\353]\302\230C\377K\240\263\\\231{"
         "\315R\222\224\367\035\001Q\032\275\025b\025h\342!\000\271z)"
         "\031\000\356\322)[p`\263\003\247p\'X\354\315oX\005\377\377/"
         "o\262\255\270\211i@\f\377S&\212\311\376z\302\220\347F\246\333\r\003j,"
         "N\341lw\n\255\350\360\275\241\230\316\371\036R\234c\305ke_"
         "\247\021\"\004\330.\240\025\203\361\222\333y\351\334@."
         "\301g\306\fc\2426\330\337\357\367\234\032\314\212m\2137\317\305\246"
         "\364\f\253j%Y\251\335\0169e\265\354\231@\322\t\n\261o",
         389);
  syscall(__NR_fsconfig, /*fd=*/r[0], /*cmd=*/1ul, /*key=*/0x200000000400ul,
          /*value=*/0x200000000240ul, /*aux=*/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;
  if ((reason = setup_leak()))
    printf("the reproducer may not work as expected: leak checking setup "
           "failed: %s\n",
           reason);
  loop();
  return 0;
}