linux-kernel - Re: kernel 3.1.1 message: <IRQ> warn_alloc

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

Message-Id: <6.2.5.6.2.20111209130007.039b3078@binnacle.cx>
Date:	Fri, 09 Dec 2011 13:03:54 -0500
From:	starlight@...nacle.cx
To:	Stephen Hemminger <shemminger@...tta.com>,
	Sony Chacko <sony.chacko@...gic.com>,
	Rajesh Borundia <rajesh.borundia@...gic.com>
Cc:	linux-kernel@...r.kernel.org, netdev <netdev@...r.kernel.org>
Subject: Re: kernel 3.1.1 message:  <IRQ> warn_alloc_failed

At 09:50 AM 12/9/2011 -0800, Stephen Hemminger wrote:
>On Thu, 08 Dec 2011 21:10:02 -0500 starlight@...nacle.cx wrote:
>
>You are seeing memory allocation failures because device
>is allocating a 16K (order 2) size socket buffer. You are using
>netxen device, and it looks like the problem.
>
>>From reading the netxen driver source. The LRO buffers
>in this device are very large (8060+skb overhead).
>Until the driver is fixed to use fragmented page size memory,
>I recommend turning off LRO.

Thank you for the analysis.  As an alternative
would it make sense to double or quadruple

    /proc/sys/vm/min_free_kbytes

or perhaps do the same for

    /proc/slabinfo(size-16384)

or both?

--
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/