Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-10 14:11:52 +00:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
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>
This commit is contained in:
Stephen Hemminger 2005-05-03 16:24:03 -07:00 committed by David S. Miller
parent bd96535b81
commit 8cbe1d46d6
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
net/sched/sch_generic.c
View File

@ -179,6 +179,7 @@ requeue:
netif_schedule(dev);
return 1;
}
BUG_ON((int) q->q.qlen < 0);
return q->q.qlen;
}