On Thu, 2012-06-28 at 08:56 +0200, Eric Dumazet wrote:

[PATCH] net: Qdisc busylock gets its own lockdep class

Tom Parkin reported following LOCKDEP splat :

..

Instruct lockdep that each Qdisc busylock is independant, or else
bonding or various tunnels can trigger a splat.

Reported-by: Tom Parkin <redacted>
Signed-off-by: Eric Dumazet <edumazet@google.com>
---

I reproduced the bug using a bond0 device, adding a qdisc on it,
(one Qdisc on bond0, and a Qdisc on the slave too)

Problem with this patch is I have following message :

BUG: key ffff88..... not in .data!

No more LOCKDEP splat, but patch not good as is.