2023-01-02 10:11:00

by Daniil Tatianin

[permalink] [raw]
Subject: [PATCH net v2] drivers/net/bonding/bond_3ad: return when there's no aggregator

Otherwise we would dereference a NULL aggregator pointer when calling
__set_agg_ports_ready on the line below.

Found by Linux Verification Center (linuxtesting.org) with the SVACE
static analysis tool.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Daniil Tatianin <[email protected]>
---
Changes since v1:
- Added a fixes tag
---
drivers/net/bonding/bond_3ad.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
index acb6ff0be5ff..320e5461853f 100644
--- a/drivers/net/bonding/bond_3ad.c
+++ b/drivers/net/bonding/bond_3ad.c
@@ -1520,6 +1520,7 @@ static void ad_port_selection_logic(struct port *port, bool *update_slave_arr)
slave_err(bond->dev, port->slave->dev,
"Port %d did not find a suitable aggregator\n",
port->actor_port_number);
+ return;
}
}
/* if all aggregator's ports are READY_N == TRUE, set ready=TRUE
--
2.25.1


2023-01-02 17:10:13

by Jiri Pirko

[permalink] [raw]
Subject: Re: [PATCH net v2] drivers/net/bonding/bond_3ad: return when there's no aggregator

Mon, Jan 02, 2023 at 10:53:35AM CET, [email protected] wrote:
>Otherwise we would dereference a NULL aggregator pointer when calling
>__set_agg_ports_ready on the line below.
>
>Found by Linux Verification Center (linuxtesting.org) with the SVACE
>static analysis tool.
>
>Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
>Signed-off-by: Daniil Tatianin <[email protected]>

Reviewed-by: Jiri Pirko <[email protected]>

2023-01-03 10:21:31

by patchwork-bot+netdevbpf

[permalink] [raw]
Subject: Re: [PATCH net v2] drivers/net/bonding/bond_3ad: return when there's no aggregator

Hello:

This patch was applied to netdev/net.git (master)
by David S. Miller <[email protected]>:

On Mon, 2 Jan 2023 12:53:35 +0300 you wrote:
> Otherwise we would dereference a NULL aggregator pointer when calling
> __set_agg_ports_ready on the line below.
>
> Found by Linux Verification Center (linuxtesting.org) with the SVACE
> static analysis tool.
>
> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> Signed-off-by: Daniil Tatianin <[email protected]>
>
> [...]

Here is the summary with links:
- [net,v2] drivers/net/bonding/bond_3ad: return when there's no aggregator
https://git.kernel.org/netdev/net/c/9c807965483f

You are awesome, thank you!
--
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