panic: _mtx_lock_sleep: recursed on non-recursive mutex em0 @ /usr/src/sys/dev/e1000/if_lem.c:881

[Adrian Chadd]

On 28 July 2012 12:09, Arnaud Lacombe <lacombar at gmail.com> wrote:

> How would a single ATH_LOCK() helps here ? AFAICS, the panic seem to
> be a classical fallout from direct dispatch where you can re-enter the
> driver from the driver itself through the network stack.

Take a look at iwn. It has a single lock - IWN_LOCK() - which it
releases before punting the frame up the stack.



Adrian