Xen dom0 crash

[Roman Bogorodskiy]

  Roger Pau Monné wrote:

> El 18/05/15 a les 15.04, Eggert, Lars ha escrit:
> > Hi,
> > 
> > I'm trying to boot a Xen dom0 on another machine (Fujitsu RX308) and Xen crashes when starting the kernel. Log below; any ideas?
> > 
> > Thanks,
> > Lars
> > (XEN) ----[ Xen-4.6-unstable  x86_64  debug=y  Not tainted ]----
> > (XEN) CPU:    0
> > (XEN) RIP:    0000:[<ffffffff80854000>]
> > (XEN) RFLAGS: 0000000000000200   CONTEXT: hvm guest (d0v0)
> > (XEN) rax: 0000000000000000   rbx: ffff82d0802e8000   rcx: ffff82d0802eff80
> > (XEN) rdx: ffff82d0801e1500   rsi: 0000000000000000   rdi: ffff82d0801ed77c
> > (XEN) rbp: ffff82d0801061d2   rsp: ffffffff81bb5000   r8:  ffff83103ff00000
> > (XEN) r9:  ffff82d08010623f   r10: ffff82d0802eff70   r11: 0000000000000000
> > (XEN) r12: ffff82d0802eff50   r13: ffff831033ae7000   r14: ffff83103ff00000
> > (XEN) r15: ffff82d08018eae3   cr0: 0000000080000011   cr4: 0000000000000020
> > (XEN) cr3: 0000000001ba1000   cr2: 0000000000000000
> > (XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: 0000   cs: 0000
> > (XEN) Guest stack trace from rsp=ffffffff81bb5000:
> > (XEN)   Fault while accessing guest memory.
> > (XEN) Hardware Dom0 crashed: rebooting machine in 5 seconds.
> > (XEN) Resetting with ACPI MEMORY or I/O RESET_REG.
> 
> Hello,
> 
> This looks very similar to the crash reported at:
> 
> https://lists.freebsd.org/pipermail/freebsd-xen/2015-April/002315.html
> 
> Which was also reported at xen-devel, but nobody seems to have looked
> into it.
> 
> Could you send a bug report to xen-devel with the following trace
> (please make sure to mention PVH in the subject line) CCing the Intel
> VT-X maintainers? (the emails are in the MAINTAINERS file in the Xen
> source tree).

H,

I'm observing a crash that looks similar to me:

(XEN) ----[ Xen-4.5.0  x86_64  debug=n  Not tainted ]----
(XEN) CPU:    0
(XEN) RIP:    0020:[<ffffffff8034a2f3>]
(XEN) RFLAGS: 0000000000010246   CONTEXT: hvm guest
(XEN) rax: fffff800d887c1b0   rbx: fffff8000ed85100   rcx: 0000000000000000
(XEN) rdx: ffffffff81788560   rsi: 0000000000000008   rdi: fffff8000ed85100
(XEN) rbp: fffffe023956a850   rsp: fffffe023956a850   r8:  ffffffff815056f8
(XEN) r9:  ffffffff8178857c   r10: fffff8000ea9e0f0   r11: ffffffff81664200
(XEN) r12: 0000000000000004   r13: ffffffff80ee832b   r14: fffff8000ed85118
(XEN) r15: fffff8000ed85100   cr0: 000000008005003b   cr4: 00000000000406e0
(XEN) cr3: 0000000002cca000   cr2: 000000080a8da140
(XEN) ds: 003b   es: 003b   fs: 0013   gs: 001b   ss: 0028   cs: 0020
(XEN) Guest stack trace from rsp=fffffe023956a850:
(XEN)   Fault while accessing guest memory.
(XEN) Domain 0 crashed: rebooting machine in 5 seconds.
(XEN) Resetting with ACPI MEMORY or I/O RESET_REG.

I'm wondering if it's related to the same issue?

It's triggered only when I try to reboot/poweroff the guest.

Roman Bogorodskiy

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