Date: Sun, 11 Dec 2016 10:55:25 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-amd64@FreeBSD.org Subject: [Bug 215209] Kernel panic at boot under XEN: integer divide fault while in kernel mode Message-ID: <bug-215209-6@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215209 Bug ID: 215209 Summary: Kernel panic at boot under XEN: integer divide fault while in kernel mode Product: Base System Version: CURRENT Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: sylvain@sylvaingarrigues.com CC: freebsd-amd64@FreeBSD.org CC: freebsd-amd64@FreeBSD.org Created attachment 177864 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=177864&action=edit EC2 log I had a system running FreeBSD 12 dated Nov. 3 2016. I updated from source to 2016-12-10. Now kernel panics on boot: xenbusb_front0: <Xen Frontend Devices> on xenstore0 xn0: <Virtual Network Interface> at device/vif/0 on xenbusb_front0 xn0: Ethernet address: 06:f6:cd:2a:fa:e1 xenbusb_back0: <Xen Backend Devices> on xenstore0 xn0: backend features:xenballoon0: <Xen Balloon Device> on xenstore0 feature-sg feature-gso-tcp4 Fatal trap 18: integer divide fault while in kernel mode xctrl0: <Xen Control Device> on xenstore0 cpuid = 0; apic id = 00 instruction pointer = 0x20:0xffffffff808f24ad stack pointer = 0x28:0xfffffe003c91d9c0 frame pointer = 0x28:0xfffffe003c91da50 code segment = base 0x0, limit 0xfffff, type 0x1b xs_dev0: <Xenstore user-space device> on xenstore0 = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 14 (xenwatch) [ thread pid 14 tid 100029 ] Stopped at xbd_backend_changed+0x84d: divq 0xffffffffffffffa8(%rbp),%eax db> Attached is full system log. When I install a fresh FreeBSD snapshot on Amazon EC2, dated 2016-11-01, I don't have this bug. With the 2016-11-30, I do have it. -- You are receiving this mail because: You are on the CC list for the bug.help
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