[PATCH net 1/1] net_sched: sch_fq: Fix out of range band computation

It is possible to compute a band of 3. Doing so will overrun array
q->band_pkt_count[0-2] boundaries.

Fixes: 29f834aa326e ("net_sched: sch_fq: add 3 bands and WRR scheduling")
Reported-by: Coverity Scan <redacted>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
---
 net/sched/sch_fq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sched/sch_fq.c b/net/sched/sch_fq.c
index 3a31c47fea9b..217c430343df 100644
--- a/net/sched/sch_fq.c
+++ b/net/sched/sch_fq.c

@@ -159,7 +159,7 @@ struct fq_sched_data {
 /* return the i-th 2-bit value ("crumb") */
 static u8 fq_prio2band(const u8 *prio2band, unsigned int prio)
 {
-	return (prio2band[prio / 4] >> (2 * (prio & 0x3))) & 0x3;
+	return (prio2band[prio / 4] >> (2 * (prio & 0x3))) % 0x3;
 }
 
 /*

-- 
2.34.1