linux-kernel - Re: [PATCH] futex: Handle early deadlock return correctly

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

Message-ID: <alpine.DEB.2.21.1901301259520.5537@nanos.tec.linutronix.de>
Date:   Wed, 30 Jan 2019 13:01:02 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Peter Zijlstra <peterz@...radead.org>
cc:     Heiko Carstens <heiko.carstens@...ibm.com>,
        Ingo Molnar <mingo@...nel.org>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        LKML <linux-kernel@...r.kernel.org>, linux-s390@...r.kernel.org,
        Stefan Liebler <stli@...ux.ibm.com>,
        Sebastian Sewior <bigeasy@...utronix.de>
Subject: Re: [PATCH] futex: Handle early deadlock return correctly

On Tue, 29 Jan 2019, Thomas Gleixner wrote:
>  int __rt_mutex_start_proxy_lock(struct rt_mutex *lock,
>  			      struct rt_mutex_waiter *waiter,
>  			      struct task_struct *task)
>  {
>  	int ret;
>  
> +	lockdep_asssert_held(&lock->wait_lock);

I'm a moron. I fixed that on the test box and wrote the changelog on the
laptop. Syncing the two together was too much for my futex wreckaged brain
...