linux-kernel - Re: [PATCH] percpu: Sync vmalloc mappings in pcpu_alloc() and free

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: <20200504155130.GK8135@suse.de>
Date:   Mon, 4 May 2020 17:51:30 +0200
From:   Joerg Roedel <jroedel@...e.de>
To:     Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:     rostedt <rostedt@...dmis.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Borislav Petkov <bp@...en8.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Shile Zhang <shile.zhang@...ux.alibaba.com>,
        Andy Lutomirski <luto@...capital.net>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Tzvetomir Stoyanov <tz.stoyanov@...il.com>
Subject: Re: [PATCH] percpu: Sync vmalloc mappings in pcpu_alloc() and
 free_percpu()

On Mon, May 04, 2020 at 11:38:43AM -0400, Mathieu Desnoyers wrote:
> ----- On May 4, 2020, at 11:31 AM, Joerg Roedel jroedel@...e.de wrote:
> > Tried this before, actually I put it into the caller of
> > pcpu_mem_zalloc(), but that didn't fix the problem for me. Stevens
> > test-case still hangs the machine.
> 
> That's unexpected.
> 
> Did you confirm that those hangs were also caused by percpu allocations ?

No, I didn't dig deeper on that hang. I can probably do tomorrow.


Regards,

	Joerg