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[v2,net-next,0/2] kcm: fix two syzcaller issues

Message ID 20180124203541.3172-1-tom@quantonium.net
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Series kcm: fix two syzcaller issues | expand

Message

Tom Herbert Jan. 24, 2018, 8:35 p.m. UTC 
In this patch set:

- Don't allow attaching non-TCP or listener sockets to a KCM mux.
- In kcm_attach Check if sk_user_data is already set. This is
  under lock to avoid race conditions. More work is need to make
  all of the users of sk_user_data to use the same locking.

- v2
  Remove unncessary check for not PF_KCM in kcm_attach (suggested by
  Guillaume Nault)

Tom Herbert (2):
  kcm: Only allow TCP sockets to be attached to a KCM mux
  kcm: Check if sk_user_data already set in kcm_attach

 net/kcm/kcmsock.c | 25 +++++++++++++++++++++----
 1 file changed, 21 insertions(+), 4 deletions(-)

Comments

David Miller Jan. 24, 2018, 8:54 p.m. UTC | #1 
From: Tom Herbert <tom@quantonium.net>
Date: Wed, 24 Jan 2018 12:35:39 -0800

> In this patch set:
> 
> - Don't allow attaching non-TCP or listener sockets to a KCM mux.
> - In kcm_attach Check if sk_user_data is already set. This is
>   under lock to avoid race conditions. More work is need to make
>   all of the users of sk_user_data to use the same locking.
> 
> - v2
>   Remove unncessary check for not PF_KCM in kcm_attach (suggested by
>   Guillaume Nault)

Series applied, thanks Tom.