tree b9d25110d46551fa80a2c34e1b9147f855e43e41
parent bd96535b81ad09d7593cc75093534acb984d3dc9
author Stephen Hemminger <shemminger@osdl.org> 1115162643 -0700
committer David S. Miller <davem@davemloft.net> 1115162643 -0700

[PKT_SCHED]: netetm: trap infinite loop hange on qlen underflow

Due to bugs in netem (fixed by later patches), it is possible to get qdisc
qlen to go negative. If this happens the CPU ends up spinning forever
in qdisc_run(). So add a BUG_ON() to trap it.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>