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fix array-index-out-of-bounds in taprio_change
[ Upstream commit efe487f ] syzbot report an array-index-out-of-bounds in taprio_change index 16 is out of range for type '__u16 [16]' that's because mqprio->num_tc is lager than TC_MAX_QUEUE,so we check the return value of netdev_set_num_tc. Reported-by: syzbot+2b3e5fb6c7ef285a94f6@syzkaller.appspotmail.com Signed-off-by: Haimin Zhang <tcs_kernel@tencent.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
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