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Date:   Fri, 15 Feb 2019 14:03:50 +0000
From:   Tomas Paukrt <>
To:     "" <>
CC:     "" <>,
        "" <>
Subject: Bug in br_handle_frame


I have recently discovered that kernel 3.12.10 is occasionally crashing 
due to NULL pointer dereference in function br_handle_frame when we 
reconfigure the bridge, because function br_port_get_rcu returns NULL.

It is very hard for us to replicate this issue, because it happens about 
once per month in our testing environment, but I have created the 
attached patch. Can you please check it? The latest kernel seems to be 
affected too.

Best regards


View attachment "lin3-12-10-net-bridge.patch" of type "text/plain" (474 bytes)

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