Re: [PATCH] can: check for null sk before deferencing it via the call to sock_net

[Marc Kleine-Budde]

On 09/08/2017 05:02 PM, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> 
> The assignment of net via call sock_net will dereference sk. This
> is performed before a sanity null check on sk, so there could be
> a potential null dereference on the sock_net call if sk is null.
> Fix this by assigning net after the sk null check. Also replace
> the sk == NULL with the more usual !sk idiom.
> 
> Detected by CoverityScan CID#1431862 ("Dereference before null check")
> 
> Fixes: 384317ef4187 ("can: network namespace support for CAN_BCM protocol")
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>

Applied to can.

Tnx,
Marc

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