Date: Wed, 20 Apr 2016 12:48:24 -0700 From: Navdeep Parhar <nparhar@gmail.com> To: Steven Crangle <Steven@stream-technologies.com>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: Re: Netmap seems to randomly cause Kernel panic on shutdown Message-ID: <ad46f7c3-5789-dc1d-4cd7-a2cb196656f7@gmail.com> In-Reply-To: <DB5PR07MB1685FAFB88A66DDF942874FF9B9E0@DB5PR07MB1685.eurprd07.prod.outlook.com> References: <DB5PR07MB1685FAFB88A66DDF942874FF9B9E0@DB5PR07MB1685.eurprd07.prod.outlook.com>
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On 04/05/2016 01:30, Steven Crangle wrote: > > Hi, > > > I'm looking for a bit of help to track down the reason behind this > kernel panic, it seems like netmap works fine for the majority of the > time, but occasionally it will cause the box to kernel panic. > > > The machine is running FreeBSD Current from a few weeks ago (Rev > 296937) Doesn't seem to be the case. The uname -a in the attachment indicates it's FreeBSD 10.2-R-p10. The stack also shows netmap_do_regif calling netmap_do_unregif and only 10.x's netmap_do_regif does that. As to the actual failure, it appears that netmap_do_regif on the cxl interface failed and something on the error path caused panic. Please try with HEAD, or try to figure out why netmap_do_regif failed. Regards, Navdeep
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