Hi Xiang, Hi Matthew, Thanks for your responses.
Matthew wrote: > Creating a kernel thread in an ioctl "lower-half" would probably cause the file descriptors from the calling task to get copied. Yes, that is exactly what is happening. The started kernel thread actively polls for an event to happen and terminates afterwards, calling close on all the copied file descriptors (which includes the one the ioctl was called on). Currently I made my device driver more robust via reference counting, but I tend to agree with the referenced issues that kernel threads should not maintain file descriptors. Thanks! Michael Am Fr., 28. Jan. 2022 um 23:38 Uhr schrieb Matthew Trescott < matthewtresc...@gmail.com>: > On Fri, Jan 28, 2022 at 7:43 PM Michael Jung <mij...@gmx.net> wrote: > > specific ioctl command implementation > > Creating a kernel thread in an ioctl "lower-half" would probably cause > the file descriptors from the calling task to get copied. Might this > be another case of > https://github.com/apache/incubator-nuttx/issues/1108 and > https://github.com/apache/incubator-nuttx/issues/2663 ? >
