This is a note to let you know that I've just added the patch titled rapidio/rionet: fix deadlock on SMP to the 4.5-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: rapidio-rionet-fix-deadlock-on-smp.patch and it can be found in the queue-4.5 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 36915976eca58f2eefa040ba8f9939672564df61 Mon Sep 17 00:00:00 2001 From: Aurelien Jacquiot <a-jacquiot@xxxxxx> Date: Tue, 22 Mar 2016 14:25:42 -0700 Subject: rapidio/rionet: fix deadlock on SMP From: Aurelien Jacquiot <a-jacquiot@xxxxxx> commit 36915976eca58f2eefa040ba8f9939672564df61 upstream. Fix deadlocking during concurrent receive and transmit operations on SMP platforms caused by the use of incorrect lock: on transmit 'tx_lock' spinlock should be used instead of 'lock' which is used for receive operation. This fix is applicable to kernel versions starting from v2.15. Signed-off-by: Aurelien Jacquiot <a-jacquiot@xxxxxx> Signed-off-by: Alexandre Bounine <alexandre.bounine@xxxxxxx> Cc: Matt Porter <mporter@xxxxxxxxxxxxxxxxxxx> Cc: Andre van Herk <andre.van.herk@xxxxxxxxxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/rionet.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/net/rionet.c +++ b/drivers/net/rionet.c @@ -280,7 +280,7 @@ static void rionet_outb_msg_event(struct struct net_device *ndev = dev_id; struct rionet_private *rnet = netdev_priv(ndev); - spin_lock(&rnet->lock); + spin_lock(&rnet->tx_lock); if (netif_msg_intr(rnet)) printk(KERN_INFO @@ -299,7 +299,7 @@ static void rionet_outb_msg_event(struct if (rnet->tx_cnt < RIONET_TX_RING_SIZE) netif_wake_queue(ndev); - spin_unlock(&rnet->lock); + spin_unlock(&rnet->tx_lock); } static int rionet_open(struct net_device *ndev) Patches currently in stable-queue which might be from a-jacquiot@xxxxxx are queue-4.5/rapidio-rionet-fix-deadlock-on-smp.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html