linux-kernel - Re: [PATCH RESEND 0/3] tracing/mm: Fix suspicious rcu_dereference

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: <20150512160351.4b5d5606@gandalf.local.home>
Date:	Tue, 12 May 2015 16:03:51 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Shreyas B Prabhu <shreyas@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org, mingo@...hat.com,
	aneesh.kumar@...ux.vnet.ibm.com, paulmck@...ux.vnet.ibm.com,
	preeti@...ux.vnet.ibm.com, mgorman@...e.de, namhyung@...nel.org,
	lizf@...fujitsu.com, acme@...hat.com,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH RESEND 0/3] tracing/mm: Fix suspicious
 rcu_dereference_check() usage warnings

On Tue, 12 May 2015 12:59:26 +0530
Shreyas B Prabhu <shreyas@...ux.vnet.ibm.com> wrote:

> Hi Steven,
> On closer look, there is no particular maintainer who picks changes to
> this file. Can you please pick these up?

Perhaps Andrew Morton?

No problem, I can take these too.

-- Steve

> 
> On Friday 08 May 2015 10:50 PM, Shreyas B. Prabhu wrote:
> > Since tracepoints use RCU for protection, they must not be called on
> > offline cpus. Running with LOCKDEP enabled discovered few scenarios
> > where trace points were called on offline cpus. These patches fix
> > this by converting these trace events into conditonal trace events
> > where condition is cpu_online(smp_processor_id())
> > 
> > Previous posting of the patchset can be found here:
> > https://lkml.org/lkml/2015/4/28/512
> > 
> > This resend CCs people who added/edited the trace events in question.
> > 
> > Shreyas B. Prabhu (3):
> >   tracing/mm: Don't trace kmem_cache_free on offline cpus
> >   tracing/mm: Don't trace mm_page_free on offline cpus
> >   tracing/mm: Don't trace mm_page_pcpu_drain on offline cpus
> > 
> >  include/trace/events/kmem.h | 26 ++++++++++++++++++++++----
> >  1 file changed, 22 insertions(+), 4 deletions(-)
> > 

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/