linux-kernel - Re: big allocation failure during tracing init.

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]

Date:	Wed, 27 Jun 2012 22:22:18 -0400
From:	Dave Jones <davej@...hat.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: big allocation failure during tracing init.

On Wed, Jun 27, 2012 at 08:52:43PM -0400, Steven Rostedt wrote:
 > On Fri, 2012-06-22 at 15:36 -0400, Dave Jones wrote:
 > 
 > > I guess the problem is on kernels built with CONFIG_MAXCPUS, struct trace_iterator
 > > can be pretty large due to this embedded in it..
 > > 
 > > 	struct ring_buffer_iter *buffer_iter[NR_CPUS];
 > > 
 > > Any thoughts on how to change that to a smaller dynamic data structure,
 > > without adding too much overhead to tracing ? (I'm assuming a linked-list walk
 > > for eg would be excessive?)
 > > 
 > 
 > Does this patch fix it for you?

I'm not sure what I did to trigger the allocation failure last time,
but I'll run with this for a while, and see if anything falls out.

thanks!

	Dave
--
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/