netdev - Re: [Patch net] tipc: use lock_sock() in tipc_sk

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Fri, 14 Dec 2018 13:20:37 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     xiyou.wangcong@...il.com
Cc:     netdev@...r.kernel.org, dvyukov@...gle.com, ying.xue@...driver.com,
        jon.maloy@...csson.com
Subject: Re: [Patch net] tipc: use lock_sock() in tipc_sk_reinit()

From: Cong Wang <xiyou.wangcong@...il.com>
Date: Mon, 10 Dec 2018 11:49:55 -0800

> lock_sock() must be used in process context to be race-free with
> other lock_sock() callers, for example, tipc_release(). Otherwise
> using the spinlock directly can't serialize a parallel tipc_release().
> 
> As it is blocking, we have to hold the sock refcnt before
> rhashtable_walk_stop() and release it after rhashtable_walk_start().
> 
> Fixes: 07f6c4bc048a ("tipc: convert tipc reference table to use generic rhashtable")
> Reported-by: Dmitry Vyukov <dvyukov@...gle.com>
> Cc: Ying Xue <ying.xue@...driver.com>
> Cc: Jon Maloy <jon.maloy@...csson.com>
> Signed-off-by: Cong Wang <xiyou.wangcong@...il.com>

Applied and queued up for -stable.