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net_sched: Fix stack info leak in cbq_dump_wrr().

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[ Upstream commit a0db856a95 ]

Make sure the reserved fields, and padding (if any), are
fully initialized.

Based upon a patch by Dan Carpenter and feedback from
Joe Perches.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
David S. Miller 2013-07-30 00:16:21 -07:00 committed by Greg Kroah-Hartman
parent d8c47c3fdc
commit 565144e976
1 changed files with 1 additions and 0 deletions
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net/sched/sch_cbq.c
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@ -1467,6 +1467,7 @@ static int cbq_dump_wrr(struct sk_buff *skb, struct cbq_class *cl)
unsigned char *b = skb_tail_pointer(skb);
struct tc_cbq_wrropt opt;
memset(&opt, 0, sizeof(opt));
opt.flags = 0;
opt.allot = cl->allot;
opt.priority = cl->priority + 1;