* [PATCH net] gve: Fix off by one in gve_tx_timeout()
@ 2021-11-09 11:47 Dan Carpenter
2021-11-09 14:10 ` patchwork-bot+netdevbpf
0 siblings, 1 reply; 2+ messages in thread
From: Dan Carpenter @ 2021-11-09 11:47 UTC (permalink / raw)
To: Jeroen de Borst, John Fraker
Cc: Catherine Sullivan, David Awogbemila, David S. Miller,
Jakub Kicinski, Willem de Bruijn, Bailey Forrest, Eric Dumazet,
Yangchun Fu, Tao Liu, netdev, kernel-janitors
The priv->ntfy_blocks[] has "priv->num_ntfy_blks" elements so this >
needs to be >= to prevent an off by one bug. The priv->ntfy_blocks[]
array is allocated in gve_alloc_notify_blocks().
Fixes: 87a7f321bb6a ("gve: Recover from queue stall due to missed IRQ")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
drivers/net/ethernet/google/gve/gve_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/google/gve/gve_main.c b/drivers/net/ethernet/google/gve/gve_main.c
index 7647cd05b1d2..2c091c99b81b 100644
--- a/drivers/net/ethernet/google/gve/gve_main.c
+++ b/drivers/net/ethernet/google/gve/gve_main.c
@@ -1137,7 +1137,7 @@ static void gve_tx_timeout(struct net_device *dev, unsigned int txqueue)
goto reset;
ntfy_idx = gve_tx_idx_to_ntfy(priv, txqueue);
- if (ntfy_idx > priv->num_ntfy_blks)
+ if (ntfy_idx >= priv->num_ntfy_blks)
goto reset;
block = &priv->ntfy_blocks[ntfy_idx];
--
2.20.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH net] gve: Fix off by one in gve_tx_timeout()
2021-11-09 11:47 [PATCH net] gve: Fix off by one in gve_tx_timeout() Dan Carpenter
@ 2021-11-09 14:10 ` patchwork-bot+netdevbpf
0 siblings, 0 replies; 2+ messages in thread
From: patchwork-bot+netdevbpf @ 2021-11-09 14:10 UTC (permalink / raw)
To: Dan Carpenter
Cc: jeroendb, jfraker, csully, awogbemila, davem, kuba, willemb, bcf,
edumazet, yangchun, xliutaox, netdev, kernel-janitors
Hello:
This patch was applied to netdev/net.git (master)
by David S. Miller <davem@davemloft.net>:
On Tue, 9 Nov 2021 14:47:36 +0300 you wrote:
> The priv->ntfy_blocks[] has "priv->num_ntfy_blks" elements so this >
> needs to be >= to prevent an off by one bug. The priv->ntfy_blocks[]
> array is allocated in gve_alloc_notify_blocks().
>
> Fixes: 87a7f321bb6a ("gve: Recover from queue stall due to missed IRQ")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
>
> [...]
Here is the summary with links:
- [net] gve: Fix off by one in gve_tx_timeout()
https://git.kernel.org/netdev/net/c/1c360cc1cc88
You are awesome, thank you!
--
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2021-11-09 11:47 [PATCH net] gve: Fix off by one in gve_tx_timeout() Dan Carpenter
2021-11-09 14:10 ` patchwork-bot+netdevbpf
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