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Kern Control: ctl_enqueuedata & Kernel Panic

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Kern Control: ctl_enqueuedata & Kernel Panic

Subject: Kern Control: ctl_enqueuedata & Kernel Panic
From: Stephane Sudre <email@hidden>
Date: Tue, 25 Jan 2005 16:00:09 +0100

When calling:

ctl_enqueuedata(kern_ctl_ref ctlref, void *data, size_t len, u_int32_t flags); /* sys/kern_control.h */

I'm seeing a Kernel Panic (in ctl_enqueuedata call).

Yet:

The ctl_ref looks OK, no ENOTCONN error. The len looks OK, no EMSGSIZE error. flags is set to 0. And data is pointing to a local struct with no indirection within it. And I didn't get an EINVAL error.

------------

* Does the data need to be copyout before calling ctl_enqueuedata?

* The Kern_control does not have a ctl_write (or equivalent) callback. Does it need to have one to make this work?

* ctl_sendsize and ctl_recvsize (or equivalents) sizes are set to 0 (default values) but since the len is ok, I don't think the error is coming from this.

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