linux-kernel - Re: [PATCH 3/3] exec: Transform exec_update_mutex into a rw

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 for Android: free password hash cracker in your pocket

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

Date:   Mon, 7 Dec 2020 10:09:53 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Bernd Edlinger <bernd.edlinger@...mail.de>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
        Jann Horn <jannh@...gle.com>,
        Vasiliy Kulikov <segoon@...nwall.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Oleg Nesterov <oleg@...hat.com>,
        Cyrill Gorcunov <gorcunov@...il.com>,
        Sargun Dhillon <sargun@...gun.me>,
        Christian Brauner <christian.brauner@...ntu.com>,
        Arnd Bergmann <arnd@...db.de>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Waiman Long <longman@...hat.com>,
        Davidlohr Bueso <dave@...olabs.net>
Subject: Re: [PATCH 3/3] exec: Transform exec_update_mutex into a rw_semaphore

On Fri, Dec 04, 2020 at 12:48:18PM -0800, Linus Torvalds wrote:
> On Fri, Dec 4, 2020 at 12:30 PM Bernd Edlinger
> <bernd.edlinger@...mail.de> wrote:
> >>
> > >    perf_event_open  (exec_update_mutex -> ovl_i_mutex)
> 
> Side note: this one looks like it should be easy to fix.

> PeterZ, is there something I'm missing?

Like this?

  https://lkml.kernel.org/r/20200828123720.GZ1362448@hirez.programming.kicks-ass.net