From: Julia Lawall <julia.law...@lip6.fr> Find_first_zero_bit considers BITS_PER_LONG bits at a time, and thus may return a larger number than the maximum position argument if that position is not a multiple of BITS_PER_LONG.
The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e1,e2,e3; statement S1,S2; @@ e1 = find_first_zero_bit(e2,e3) ... if (e1 - == + >= e3) S1 else S2 // </smpl> Signed-off-by: Julia Lawall <julia.law...@lip6.fr> --- drivers/net/wireless/ath/ath10k/htt_tx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -u -p a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c --- a/drivers/net/wireless/ath/ath10k/htt_tx.c +++ b/drivers/net/wireless/ath/ath10k/htt_tx.c @@ -64,7 +64,7 @@ int ath10k_htt_tx_alloc_msdu_id(struct a msdu_id = find_first_zero_bit(htt->used_msdu_ids, htt->max_num_pending_tx); - if (msdu_id == htt->max_num_pending_tx) + if (msdu_id >= htt->max_num_pending_tx) return -ENOBUFS; ath10k_dbg(ATH10K_DBG_HTT, "htt tx alloc msdu_id %d\n", msdu_id); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
