| Message ID | 20221229073849.1388315-1-linmq006@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | wifi: ath11k: Fix memory leak in ath11k_peer_rx_frag_setup | expand |
On Thu, Dec 29, 2022 at 11:38:48AM +0400, Miaoqian Lin wrote: > crypto_alloc_shash() allocates resources, which should be released by > crypto_free_shash(). When ath11k_peer_find() fails, there has memory > leak. Move crypto_alloc_shash() after ath11k_peer_find() to fix this. > > Fixes: 243874c64c81 ("ath11k: handle RX fragments") > Signed-off-by: Miaoqian Lin <linmq006@gmail.com> > --- > drivers/net/wireless/ath/ath11k/dp_rx.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > > diff --git a/drivers/net/wireless/ath/ath11k/dp_rx.c b/drivers/net/wireless/ath/ath11k/dp_rx.c > index c5a4c34d7749..1297caa2b09a 100644 > --- a/drivers/net/wireless/ath/ath11k/dp_rx.c > +++ b/drivers/net/wireless/ath/ath11k/dp_rx.c > @@ -3116,10 +3116,6 @@ int ath11k_peer_rx_frag_setup(struct ath11k *ar, const u8 *peer_mac, int vdev_id > struct dp_rx_tid *rx_tid; > int i; > > - tfm = crypto_alloc_shash("michael_mic", 0, 0); > - if (IS_ERR(tfm)) > - return PTR_ERR(tfm); > - > spin_lock_bh(&ab->base_lock); > > peer = ath11k_peer_find(ab, vdev_id, peer_mac); > @@ -3129,6 +3125,10 @@ int ath11k_peer_rx_frag_setup(struct ath11k *ar, const u8 *peer_mac, int vdev_id > return -ENOENT; > } > > + tfm = crypto_alloc_shash("michael_mic", 0, 0); > + if (IS_ERR(tfm)) > + return PTR_ERR(tfm); > + You forgot to unlock ab->base_lock. Thanks > for (i = 0; i <= IEEE80211_NUM_TIDS; i++) { > rx_tid = &peer->rx_tid[i]; > rx_tid->ab = ab; > -- > 2.25.1 >
diff --git a/drivers/net/wireless/ath/ath11k/dp_rx.c b/drivers/net/wireless/ath/ath11k/dp_rx.c index c5a4c34d7749..1297caa2b09a 100644 --- a/drivers/net/wireless/ath/ath11k/dp_rx.c +++ b/drivers/net/wireless/ath/ath11k/dp_rx.c @@ -3116,10 +3116,6 @@ int ath11k_peer_rx_frag_setup(struct ath11k *ar, const u8 *peer_mac, int vdev_id struct dp_rx_tid *rx_tid; int i; - tfm = crypto_alloc_shash("michael_mic", 0, 0); - if (IS_ERR(tfm)) - return PTR_ERR(tfm); - spin_lock_bh(&ab->base_lock); peer = ath11k_peer_find(ab, vdev_id, peer_mac); @@ -3129,6 +3125,10 @@ int ath11k_peer_rx_frag_setup(struct ath11k *ar, const u8 *peer_mac, int vdev_id return -ENOENT; } + tfm = crypto_alloc_shash("michael_mic", 0, 0); + if (IS_ERR(tfm)) + return PTR_ERR(tfm); + for (i = 0; i <= IEEE80211_NUM_TIDS; i++) { rx_tid = &peer->rx_tid[i]; rx_tid->ab = ab;
crypto_alloc_shash() allocates resources, which should be released by crypto_free_shash(). When ath11k_peer_find() fails, there has memory leak. Move crypto_alloc_shash() after ath11k_peer_find() to fix this. Fixes: 243874c64c81 ("ath11k: handle RX fragments") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> --- drivers/net/wireless/ath/ath11k/dp_rx.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)