MTres19 opened a new issue #2663:
URL: https://github.com/apache/incubator-nuttx/issues/2663
In developing my CAN driver for the Tiva chips, I decided to use a kernel
thread to load messages from the RX mailboxes. I call kthread_create like this:
~~~
ret = kthread_create("Tiva CAN0", CONFIG_TIVA_CAN0_PRIO,
TIVA_CAN_KTHREAD_STACKSIZE,
tivacan_rxhandler,
kthd_argv);
~~~
where kthd_argv is a string vector with a terminating null entry as
specified in the comments for kthread_create. This is done in
`tivacan_setup()`, which is called by `can_open()`. However, `kthread_create()`
hangs in `file_dup2()`; for some reason it copies 3 file descriptors (stdin,
stdout, stderr, I suppose) then hangs waiting for a semaphore. This should not
happen—kthreads should not even have memory allocated for open file descriptors.
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