Patch "octeontx2-pf: Add missing mutex lock in otx2_get_pauseparam" has been added to the 6.1-stable tree

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This is a note to let you know that I've just added the patch titled

    octeontx2-pf: Add missing mutex lock in otx2_get_pauseparam

to the 6.1-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:
     octeontx2-pf-add-missing-mutex-lock-in-otx2_get_paus.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit a3d18bedaecd82bcd315a0da67a9eb6d2e69f921
Author: Subbaraya Sundeep <sbhatta@xxxxxxxxxxx>
Date:   Wed Nov 29 10:53:42 2023 +0530

    octeontx2-pf: Add missing mutex lock in otx2_get_pauseparam
    
    [ Upstream commit 9572c949385aa2ef10368287c439bcb7935137c8 ]
    
    All the mailbox messages sent to AF needs to be guarded
    by mutex lock. Add the missing lock in otx2_get_pauseparam
    function.
    
    Fixes: 75f36270990c ("octeontx2-pf: Support to enable/disable pause frames via ethtool")
    Signed-off-by: Subbaraya Sundeep <sbhatta@xxxxxxxxxxx>
    Reviewed-by: Simon Horman <horms@xxxxxxxxxx>
    Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
index aaf1af2a402ec..af779ae40d3c2 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
@@ -323,9 +323,12 @@ static void otx2_get_pauseparam(struct net_device *netdev,
 	if (is_otx2_lbkvf(pfvf->pdev))
 		return;
 
+	mutex_lock(&pfvf->mbox.lock);
 	req = otx2_mbox_alloc_msg_cgx_cfg_pause_frm(&pfvf->mbox);
-	if (!req)
+	if (!req) {
+		mutex_unlock(&pfvf->mbox.lock);
 		return;
+	}
 
 	if (!otx2_sync_mbox_msg(&pfvf->mbox)) {
 		rsp = (struct cgx_pause_frm_cfg *)
@@ -333,6 +336,7 @@ static void otx2_get_pauseparam(struct net_device *netdev,
 		pause->rx_pause = rsp->rx_pause;
 		pause->tx_pause = rsp->tx_pause;
 	}
+	mutex_unlock(&pfvf->mbox.lock);
 }
 
 static int otx2_set_pauseparam(struct net_device *netdev,




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