我有一个大的应用程序，我正在检查内存泄漏。我正在使用valgrind与选项--leak-check=yes --track-origins=yes。一个警告的例子：

==2173== Warning: noted but unhandled ioctl 0xc410 with no size/direction hints.
==2173==    This could cause spurious value errors to appear.
==2173==    See README_MISSING_SYSCALL_OR_IOCTL for guidance on writing a proper wrapper.
==2173== Warning: noted but unhandled ioctl 0xc400 with no size/direction hints.
==2173==    This could cause spurious value errors to appear.
==2173==    See README_MISSING_SYSCALL_OR_IOCTL for guidance on writing a proper wrapper.
==2173== Warning: noted but unhandled ioctl 0xc40d with no size/direction hints.
==2173==    This could cause spurious value errors to appear.
==2173==    See README_MISSING_SYSCALL_OR_IOCTL for guidance on writing a proper wrapper.
==2173== Warning: noted but unhandled ioctl 0xc40c with no size/direction hints.
==2173==    This could cause spurious value errors to appear.
==2173==    See README_MISSING_SYSCALL_OR_IOCTL for guidance on writing a proper wrapper.
==2173== Thread 3 VCHIQ completio:
==2173== Use of uninitialised value of size 4
==2173==    at 0x7E1E04C: completion_thread (in /opt/vc/lib/libvchiq_arm.so)
==2173==  Uninitialised value was created by a stack allocation
==2173==    at 0x7E1DF98: completion_thread (in /opt/vc/lib/libvchiq_arm.so)

我想知道我是否需要处理ioctl调用。我不能为此读取official doc，但是this link没有奇怪的字符。看起来未处理的ioctl指的是可以改变内存的Linux系统调用。但是看起来我不应该担心这些，因为我可以假设Linux（尽管我使用的是Raspberry Pi，如果这很重要的话）正在正确地处理内存。
除非它是说我的记忆可能会被转移，然后瓦尔格林会失去它的踪迹。如果是这样的话，那么处理它是有意义的。但如果我需要处理它，那么我怎么知道它引用了哪些函数呢？显示的消息没有引用任何函数。我可以参考文档来编写 Package 器函数，但是我必须找到我使用某个系统函数的每个示例并编写一个 Package 器吗？