Date: Mon, 08 Aug 2016 10:22:44 -0700 From: John Baldwin <jhb@freebsd.org> To: freebsd-current@freebsd.org Cc: Don Lewis <truckman@freebsd.org>, freebsd-current@freebsd.org Subject: Re: kernel panic caused by virtualbox(?) Message-ID: <2743385.seuRjyAMVA@ralph.baldwin.cx> In-Reply-To: <201608050132.u751WE75016607@gw.catspoiler.org> References: <201608050132.u751WE75016607@gw.catspoiler.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thursday, August 04, 2016 05:10:29 PM Don Lewis wrote: > Reposted to -current to get some more eyes on this ... > > I just got a kernel panic when I started up a CentOS 7 VM in virtualbox. > The host is: > FreeBSD 12.0-CURRENT #17 r302500 GENERIC amd64 > The virtualbox version is: > virtualbox-ose-5.0.26 > virtualbox-ose-kmod-5.0.26_1 > > The panic message is: > > panic: Unregistered use of FPU in kernel > cpuid = 1 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe085a55d030 > vpanic() at vpanic+0x182/frame 0xfffffe085a55d0b0 > kassert_panic() at kassert_panic+0x126/frame 0xfffffe085a55d120 > trap() at trap+0x7ae/frame 0xfffffe085a55d330 > calltrap() at calltrap+0x8/frame 0xfffffe085a55d330 > --- trap 0x16, rip = 0xffffffff827dd3a9, rsp = 0xfffffe085a55d408, rbp = 0xfffffe085a55d430 --- > g_pLogger() at 0xffffffff827dd3a9/frame 0xfffffe085a55d430 > g_pLogger() at 0xffffffff8274e5c7/frame 0x3 > KDB: enter: panic > > Since g_pLogger is a symbol in vboxdrv.ko, it looks like virtualbox is > the trigger. > > There are no symbols for the virtualbox kmods, possibly because I > installed them as an upgrade using packages (built with the same source > tree version) instead of by using PORTS_MODULES in make.conf, so ports > kgdb didn't have anything useful to say about what happened before the > trap. > > This panic is very repeatable. I just got another one when starting the > same VM., but this time the two calls before the trap were > null_bug_bypass(). Hmn, that symbol is in nullfs ... > > I don't see this with a Windows 7 VM. > > All of the virtualbox kmod files are compiled with -mno-mmx -mno-sse > -msoft-float -mno-aes -mno-avx I suspect head packages are quite likely built against the a "wrong" KBI and are too fragile to use for kmods vs compiling from ports. :-/ I would try a built-from-ports kmod to see if the panics go away. -- John Baldwin
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?2743385.seuRjyAMVA>