5.0-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit 135e7245479addc6b1f5d031e3d7e2ddb3d2b109 ]

Provide precision hints to snprintf() since we know the destination
buffer size of the RX/TX ring names are IFNAMSIZ + 5 - 1. This fixes the
following warnings:

drivers/net/ethernet/intel/e1000e/netdev.c: In function
'e1000_request_msix':
drivers/net/ethernet/intel/e1000e/netdev.c:2109:13: warning: 'snprintf'
output may be truncated before the last format character
[-Wformat-truncation=]
     "%s-rx-0", netdev->name);
             ^
drivers/net/ethernet/intel/e1000e/netdev.c:2107:3: note: 'snprintf'
output between 6 and 21 bytes into a destination of size 20
   snprintf(adapter->rx_ring->name,
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     sizeof(adapter->rx_ring->name) - 1,
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     "%s-rx-0", netdev->name);
     ~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/intel/e1000e/netdev.c:2125:13: warning: 'snprintf'
output may be truncated before the last format character
[-Wformat-truncation=]
     "%s-tx-0", netdev->name);
             ^
drivers/net/ethernet/intel/e1000e/netdev.c:2123:3: note: 'snprintf'
output between 6 and 21 bytes into a destination of size 20
   snprintf(adapter->tx_ring->name,
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     sizeof(adapter->tx_ring->name) - 1,
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     "%s-tx-0", netdev->name);
     ~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Florian Fainelli <f.faine...@gmail.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/net/ethernet/intel/e1000e/netdev.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c 
b/drivers/net/ethernet/intel/e1000e/netdev.c
index 189f231075c2..23eae3df01a9 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -2106,7 +2106,7 @@ static int e1000_request_msix(struct e1000_adapter 
*adapter)
        if (strlen(netdev->name) < (IFNAMSIZ - 5))
                snprintf(adapter->rx_ring->name,
                         sizeof(adapter->rx_ring->name) - 1,
-                        "%s-rx-0", netdev->name);
+                        "%.14s-rx-0", netdev->name);
        else
                memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
        err = request_irq(adapter->msix_entries[vector].vector,
@@ -2122,7 +2122,7 @@ static int e1000_request_msix(struct e1000_adapter 
*adapter)
        if (strlen(netdev->name) < (IFNAMSIZ - 5))
                snprintf(adapter->tx_ring->name,
                         sizeof(adapter->tx_ring->name) - 1,
-                        "%s-tx-0", netdev->name);
+                        "%.14s-tx-0", netdev->name);
        else
                memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
        err = request_irq(adapter->msix_entries[vector].vector,
-- 
2.19.1



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