> -----Original Message----- > From: Ben Greear [mailto:gree...@candelatech.com] > Sent: Tuesday, April 25, 2017 12:03 AM > To: Y.B. Lu; John Crispin; 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 > > 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? >
[Lu Yangbo-B47093] Hi Ben, yes... The system crashed and reboot. It's obvious that memory was consumed so much in the UDP throughput test with /etc/configs/network bridge mode setting. I ran a script to execute 'free' command every 0.5 sec to observe that. > Thanks, > Ben > > > -- > Ben Greear <gree...@candelatech.com> > Candela Technologies Inc http://www.candelatech.com _______________________________________________ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev
