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authorAtul Gupta <atul.gupta@chelsio.com>2019-05-02 03:46:55 -0700
committerHerbert Xu <herbert@gondor.apana.org.au>2019-05-09 13:17:22 +0800
commitb4f91664307d5bf4f0d93da12a6146f9cf3559fb (patch)
tree5076c818a357dc8f9895ab85e46f91abe6be3745 /drivers/crypto
parente59f755ceb6d6f39f90899d2a4e39c3e05837e12 (diff)
downloadlinux-b4f91664307d5bf4f0d93da12a6146f9cf3559fb.tar.bz2
crypto: chelsio - Fix NULL pointer dereference
Do not request FW to generate cidx update if there is less space in tx queue to post new request. SGE DBP 1 pidx increment too large BUG: unable to handle kernel NULL pointer dereference at 0000000000000124 SGE error for queue 101 Signed-off-by: Atul Gupta <atul.gupta@chelsio.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
-rw-r--r--drivers/crypto/chelsio/chcr_ipsec.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/crypto/chelsio/chcr_ipsec.c b/drivers/crypto/chelsio/chcr_ipsec.c
index 2f60049361ef..f429aae72542 100644
--- a/drivers/crypto/chelsio/chcr_ipsec.c
+++ b/drivers/crypto/chelsio/chcr_ipsec.c
@@ -575,7 +575,8 @@ inline void *chcr_crypto_wreq(struct sk_buff *skb,
if (unlikely(credits < ETHTXQ_STOP_THRES)) {
netif_tx_stop_queue(q->txq);
q->q.stops++;
- wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F;
+ if (!q->dbqt)
+ wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F;
}
wr_mid |= FW_ULPTX_WR_DATA_F;
wr->wreq.flowid_len16 = htonl(wr_mid);