[Xen-devel] Domain0 crash on Bad L1 flags 800000

[Qiangmin Lin <linqiangmin@xxxxxxxxxx>]

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.
 
(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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