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pkt_sched: fq: avoid hang when quantum 0
authorKenneth Klette Jonassen <kennetkl@ifi.uio.no>
Tue, 3 Feb 2015 16:49:18 +0000 (17:49 +0100)
committerDavid S. Miller <davem@davemloft.net>
Thu, 5 Feb 2015 04:07:39 +0000 (20:07 -0800)
commit3725a269815ba6dbb415feddc47da5af7d1fac58
treeae3db9b9e037cb6afeb85460e0cd0038eec3b8a5tree
parentdb27ebb111e9f69efece08e4cb6a34ff980f8896commit | diff
pkt_sched: fq: avoid hang when quantum 0

Configuring fq with quantum 0 hangs the system, presumably because of a
non-interruptible infinite loop. Either way quantum 0 does not make sense.

Reproduce with:
sudo tc qdisc add dev lo root fq quantum 0 initial_quantum 0
ping 127.0.0.1

Signed-off-by: Kenneth Klette Jonassen <kennetkl@ifi.uio.no>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/sched/sch_fq.c diff | blob | history
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