bpf/fxp RELENG_5 LOR

[Rene Ladan]

On Mon, May 02, 2005 at 02:51:05PM +0200, Rene Ladan wrote:
> 
> FreeBSD 5.4-STABLE #0: Mon May  2 02:26:10 CEST 2005
>     root at 82-168-79-254-bbxl.xdsl.tiscali.nl:/usr/obj/usr/src/sys/RENE
> 
> #tcpdump
> 
> fxp0: promiscuous mode enabled
> 
> lock order reversal
>  1st 0xc066de80 bpf global lock (bpf global lock) @ /usr/src/sys/net/bpf.c:385
>  2nd 0xc14c9264 fxp0 (network driver) @ /usr/src/sys/modules/fxp/../../dev/fxp/if_fxp.c:2394
> 
> fxp0: promiscuous mode disabled

Of course, to obfuscate debugging, this only happens sporadically, e.g.
when using tcpdump the first time. :(

This and related fxp LORs all point to some file and to
src/sys/dev/fxp/if_fxp.c, at places where a FXP_LOCK(sc), with sc of
type fxp_softc * is done.

from src/sys/dev/fxp/fxpvar.h:

#define	FXP_LOCK(_sc)		mtx_lock(&(_sc)->sc_mtx)

Regards,
Rene
-- 
"It won't fit on the line."
		-- me, 2001
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