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can not find libnative-lib.so in /proc/self/maps , then crash #44

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@tangxianqiang

Description

the source code ``` if ((fd = my_openat(AT_FDCWD, PROC_MAPS, O_RDONLY | O_CLOEXEC, 0)) != 0) {

    while ((read_one_line(fd, map, MAX_LINE)) > 0) {
        for (int i = 0; i < NUM_LIBS; i++) {
            if (my_strstr(map, libstocheck[i]) != NULL) {
                char tmp[MAX_LENGTH] = "";
                char path[MAX_LENGTH] = "";
                char buf[5] = "";
                sscanf(map, "%s %s %s %s %s %s", tmp, buf, tmp, tmp, tmp, path);
                if (buf[2] == 'x') {
                    size_t size = my_strlen(path) + 1;
                    filepaths[i] = malloc(size);
                    my_strlcpy(filepaths[i], path, size);
                    counter++;
                }
            }
        }
        if (counter == NUM_LIBS)
            break;
    }
    my_close(fd);
} ``` will show the different result on the same device.  

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