lkml.org 
[lkml]   [2019]   [Jul]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH v2] tipc: ensure head->lock is initialised
From
From: Chris Packham <chris.packham@alliedtelesis.co.nz>
Date: Fri, 12 Jul 2019 10:41:15 +1200

> tipc_named_node_up() creates a skb list. It passes the list to
> tipc_node_xmit() which has some code paths that can call
> skb_queue_purge() which relies on the list->lock being initialised.
>
> The spin_lock is only needed if the messages end up on the receive path
> but when the list is created in tipc_named_node_up() we don't
> necessarily know if it is going to end up there.
>
> Once all the skb list users are updated in tipc it will then be possible
> to update them to use the unlocked variants of the skb list functions
> and initialise the lock when we know the message will follow the receive
> path.
>
> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>

Applied.

\
 
 \ /
  Last update: 2019-07-13 00:35    [W:0.041 / U:18.556 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site