Re: [Xen-devel] xc_gnttab_get_version question/bug

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

Please do not top post.

On Tue, 2012-02-14 at 12:30 +0000, Francisco Rocha wrote:
> I have set the noreboot option for Xen and it does not reboot but the machine 
> freezes.
> I am unable to get output. Which logs should I check?

It might be that a serial console is needed to actually see anything.
"console=vga,keep" might also help.

However I just tried your test program and got:

(XEN) Assertion '!in_atomic()' failed at softirq.c:61
(XEN) ----[ Xen-4.2-unstable  x86_64  debug=y  Not tainted ]----
(XEN) CPU:    2
(XEN) RIP:    e008:[<ffff82c4801254ff>] do_softirq+0xd/0x28
(XEN) RFLAGS: 0000000000010202   CONTEXT: hypervisor
(XEN) rax: 0000000000000001   rbx: ffff8300dffb8000   rcx: ffff82c4802d0800
(XEN) rdx: 0000003c9f1bc680   rsi: 0000000000000000   rdi: 0000000000000001
(XEN) rbp: ffff83011f4aff08   rsp: ffff83011f4aff08   r8:  00000000deadbeef
(XEN) r9:  00000000deadbeef   r10: 00000000deadbeef   r11: 0000000000000000
(XEN) r12: 0000000000000000   r13: 0000000000000000   r14: 0000000000000000
(XEN) r15: 0000000000000000   cr0: 000000008005003b   cr4: 00000000000026f0
(XEN) cr3: 000000011f45e000   cr2: 00000000de567a64
(XEN) ds: 007b   es: 007b   fs: 00d8   gs: 0000   ss: 0000   cs: e008
(XEN) Xen stack trace from rsp=ffff83011f4aff08:
(XEN)    00007cfee0b500c7 ffff82c480220f16 0000000000000000 0000000000000000
(XEN)    0000000000000000 0000000000000000 00000000dfc75f90 00000000deadbeef
(XEN)    0000000000000000 0000000000000000 0000000000000000 0000000000000000
(XEN)    0000000000000000 00000000deadbeef 00000000c10082c0 0000000000000002
(XEN)    0000000000000000 0000010000000000 00000000c10023a7 0000000000000061
(XEN)    0000000000000246 00000000dfc75f80 0000000000000069 000000000000beef
(XEN)    000000000000beef 000000000000beef 000000000000beef 0000000000000002
(XEN)    ffff8300dffb8000 0000003c9f1bc680 0000000000000000
(XEN) Xen call trace:
(XEN)    [<ffff82c4801254ff>] do_softirq+0xd/0x28
(XEN)    
(XEN) 
(XEN) ****************************************
(XEN) Panic on CPU 2:
(XEN) Assertion '!in_atomic()' failed at softirq.c:61
(XEN) ****************************************
(XEN) 
(XEN) Manual reset required ('noreboot' specified)

I've no idea where this might be coming from though.


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