On 04/24/2017 12:39 AM, Y.B. Lu wrote:
Hi John,
Thank you very much.
But I still feel it's strange the crash didn't happen if used brctl to
configure instead of /etc/config/network.
Much memory(about 700MB) was consumed in UDP throughput test only when used
/etc/config/network.
As I know, both ls1043a with DPAA ethernet driver and ls1012a with ppfe
ethernet driver had this issue.
I think maybe I should focus on deep studying in /etc/config/network. But we
had a deadline by this month to resolve it.
Is there any possibility the issue was caused by OpenWrt?
Thanks again.
Best regards,
Yangbo Lu
-----Original Message-----
From: John Crispin [mailto:j...@phrozen.org]
Sent: Monday, April 24, 2017 12:31 PM
To: Y.B. Lu; lede-dev@lists.infradead.org; j...@mein.io
Cc: Wes Li; Xiaobo Xie
Subject: Re: [LEDE-DEV] FW: UDP throughput caused kernel panic if
configured bridge mode in /etc/config/network
Hi,
this is most certainly a bug in the kernel. either the ethernet driver
blows up under load or some other memory allocation related bug. it is
very common for ethernet to kill boards under load by triggering bugs.
John
On 24/04/17 05:49, Y.B. Lu wrote:
Hi John and Jo-Philipp,
Have you ever got similar problem, or known any possible reason about
this, or known anyone who probably know this?
I just found much memory would be consumed if I configured board as
bridge mode in /etc/config/network and did UDP throughput test.
But using brctl to configure bridge mode didn't consume memory.
Thank you very much.
Best regards,
Yangbo Lu
-----Original Message-----
From: Y.B. Lu
Sent: Thursday, April 13, 2017 1:24 PM
To: 'lede-dev@lists.infradead.org'
Subject: UDP throughput caused kernel panic if configured bridge mode
in /etc/config/network
Hi all,
Recently I got below kernel panic when did UDP throughput test on NXP
LS1043ARDB board. I configured the bridge mode in /etc/config/network.
But if I used 'brctl' to configure the bridge mode, this issue would
not happen.
I also noticed almost all memory was consumed(about 700MB) when
kernel crashed.
Anyone have any idea about this? Thank you very much.
root@LEDE:/etc/fmc/config# [ 263.981540] ksoftirqd/3: page
allocation
failure: order:0, mode:0x2080020 [ 263.988339] CPU: 3 PID: 19 Comm:
ksoftirqd/3 Not tainted 4.4.52 #0 [ 263.994508] Hardware name:
This looks like just a warning...did the system really panic and stop working?
Thanks,
Ben
--
Ben Greear <gree...@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
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