> -----Original Message----- > From: Yousong Zhou [mailto:yszhou4t...@gmail.com] > Sent: Monday, April 24, 2017 5:15 PM > To: Y.B. Lu > Cc: John Crispin; lede-dev@lists.infradead.org; j...@mein.io; Wes Li; > Xiaobo Xie > Subject: Re: [LEDE-DEV] FW: UDP throughput caused kernel panic if > configured bridge mode in /etc/config/network > > On 24 April 2017 at 15:39, Y.B. Lu <yangbo...@nxp.com> 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. > > > > Most parts of /etc/config/network will be parsed and executed by netifd. > Comparing strace output of both brctl and netifd may reveal something > useful. > > The kernel is supposed to be resilient against whatever ways applications > may use its exposed userspace interface which is driver and device- > agnostic. If the driver fails, there is very likely an issue within the > driver itself. > > yousong
[Lu Yangbo-B47093] Hi Yousong, thank you so much for your comments and suggestion. It's now very strange. The driver failed because of there was no enough memory. But this only happened with /etc/config/network bridge configure. Both ls1012a and ls1043a which had different ethernet drivers got this problem. I think your suggestion comparing strace output of both brctl and netifd probably is a good method. We will have a try. Thanks. - Yangbo Lu _______________________________________________ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev
