Date: Sat, 29 Apr 2017 15:24:30 -0400 From: Tom Uffner <tom@uffner.com> To: Hamza Sheikh <fehrist@codeghar.com>, freebsd-current <freebsd-current@freebsd.org> Subject: Re: panics in network stack in 12-current Message-ID: <5f0edb37-3862-4708-2134-2406b8c36419@uffner.com> In-Reply-To: <CABJ3qSN490iYp-rm0z6D7-Fab0kGR7_TXRhqPxu4iXzidbQggg@mail.gmail.com> References: <bccb9c51-3dc2-ea38-15ff-0dbef83b25c1@uffner.com> <92a10822-3fde-f839-1836-92e8d936f2b6@yandex.ru> <841f1d22-b563-862c-a367-a475356781ef@uffner.com> <9c1f65f4-162b-a83d-1246-31d9e0525e4a@uffner.com> <b401fa22-17ae-24c2-d5fc-bd70c8ee197f@yandex.ru> <0dda5011-e74c-50d1-e8fa-088f123e30d2@uffner.com> <CABJ3qSN490iYp-rm0z6D7-Fab0kGR7_TXRhqPxu4iXzidbQggg@mail.gmail.com>
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Hamza Sheikh wrote: > I may have encountered something similar on an EdgeRouter Lite running > r317256. It's serving as network gateway at home. After some time the > WAN connection goes dead. It starts working with either (a) > reconnecting the network cable or (b) pinging any IP on the internet > from that box. On rare occasions I had to reboot to get it to work. it doesn't sound much like my problem. i had no network issues until the system would suddenly panic and reboot. removing FLOWTABLE from my kernel might have fixed it, but it is too early to tell as I have yet to discover a reproducible way to trigger the bug. > I'm still new to FreeBSD and don't know how to collect relevant > information or whether to even determine if my issue is related to > Andrey's. Any help is really appreciated. My setup is documented in > detail in a blog post[0] if it helps. You probably don't want to hear this, but if you are new to FreeBSD, maybe you shouldn't be running current. I probably shouldn't running current and I have 35 years of BSD experience. I do it as a way of contributing to the project by alpha-testing new code when I have time. Brendan Gregg has some very good material on his site that might help you learn to collect useful info about what is going on inside your systems. http://www.brendangregg.com/Perf/freebsd_observability_tools.png http://www.brendangregg.com/
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