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xen-devel
Re: [Xen-devel] Domain0 crash on Bad L1 flags 800000
On 12/08/2010 06:53 PM, Qiangmin Lin wrote:
> Hi all, My dom0 kernel is 2.6.32.12-xen and Xen 3.4.2.
> I had closed "No Execute" in BIOS, but I see flags 800000 which mean _PAGE_NX
> in crash information.
This looks like the same bug your colleague fanliang reported to me. Was
this after a long period of uptime? What was running at the time?
I'm curious why you're using that particular kernel, and why you're
running with NX disabled.
Thanks,
J
>
> (XEN) mm.c:720:d0 Bad L1 flags 800000
> (XEN) mm.c:4203:d0 ptwr_emulate: could not get_page_from_l1e()
> (XEN) domain_crash_sync called from entry.S
> (XEN) Domain 0 (vcpu#2) crashed on cpu#2:
> (XEN) ----[ Xen-3.4.2 x86_64 debug=n Not tainted ]----
> (XEN) CPU: 2
> (XEN) RIP: e033:[<ffffffffa0375fcc>]
> (XEN) RFLAGS: 0000000000010292 EM: 0 CONTEXT: pv guest
> (XEN) rax: ffffffffa0376120 rbx: ffff880075222000 rcx: 0000000000000001
> (XEN) rdx: ffff88000402b000 rsi: 0000000000000000 rdi: ffff880075222048
> (XEN) rbp: ffff880075222000 rsp: ffff8800a5db5ff8 r8: ffffe8ffffeb0588
> (XEN) r9: 0000000000000001 r10: 0000000000000000 r11: ffffffffa0376120
> (XEN) r12: ffff880075222048 r13: ffff8800c8a69000 r14: ffff880075222058
> (XEN) r15: 00007f44fd7802d0 cr0: 0000000080050033 cr4: 00000000000026f0
> (XEN) cr3: 00000008dbaf8000 cr2: ffff8800a5db5ff0
> (XEN) ds: 0000 es: 0000 fs: 0000 gs: 0000 ss: e02b cs: e033
> (XEN) Guest stack trace from rsp=ffff8800a5db5ff8:
> (XEN) ffff8800c8a69000 ffff880075222000 ffff88002bcc6500 ffffffffa0376144
> (XEN) ffff8800c8a69000 ffff8800888f7380 ffff8800c8a690f8 ffffffffa0377e3c
> (XEN) 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> (XEN) ffff8800c8a69000 ffff880075222000 ffff88002bcc6500 ffff8800c8a69000
> (XEN) ffff880075222058 ffffffffa0376161 ffff8800c8a69000 ffff8800888f7380
> (XEN) ffff8800c8a690f8 ffffffffa0377e3c 0000000000000000 0000000000000000
> (XEN) 0000000000000000 0000000000000000 ffff8800c8a69000 ffff880075222000
> (XEN) ffff88002bcc6500 ffff8800c8a69000 ffff880075222058 ffffffffa0376161
> (XEN) ffff8800c8a69000 ffff8800888f7380 ffff8800c8a690f8 ffffffffa0377e3c
> (XEN) 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> (XEN) ffff8800c8a69000 ffff880075222000 ffff88002bcc6500 ffff8800c8a69000
> (XEN) ffff880075222058 ffffffffa0376161 ffff8800c8a69000 ffff8800888f7380
> (XEN) ffff8800c8a690f8 ffffffffa0377e3c 0000000000000000 0000000000000000
> (XEN) 0000000000000000 0000000000000000 ffff8800c8a69000 ffff880075222000
> (XEN) ffff88002bcc6500 ffff8800c8a69000 ffff880075222058 ffffffffa0376161
> (XEN) ffff8800c8a69000 ffff8800888f7380 ffff8800c8a690f8 ffffffffa0377e3c
> (XEN) 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> (XEN) ffff8800c8a69000 ffff880075222000 ffff88002bcc6500 ffff8800c8a69000
> (XEN) ffff880075222058 ffffffffa0376161 ffff8800c8a69000 ffff8800888f7380
> (XEN) ffff8800c8a690f8 ffffffffa0377e3c 0000000000000000 0000000000000000
> (XEN) Domain 0 crashed: rebooting machine in 5 seconds.
> [1182692.327659] BUG: unable to handle kernel
> please help me
> L
>
>
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> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
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