[Xen-bugs] [Bug 847] New: Reboot Linux VMX domain causes Xen0 reboot.

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=847

           Summary: Reboot Linux VMX domain causes Xen0 reboot.
           Product: Xen
           Version: unstable
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: HVM
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: ping.y.yu@xxxxxxxxx


Environment:
------------
Service OS (ia32/ia32e/IA64): ia32/pae/ia32e
Guest OS (ia32/ia32e/IA64): Linux
Change Set: CS 13143
Hardware: conroe / woodcrest



Bug detailed description:
--------------------------
Restart Linux VMX domain causes Xen0 reboot


Reproduce steps:
----------------
1.prepare a Linux image
2.prepare a configuration file with vcpus=4
3. xm cr "configuration file"
4. run command "reboot" in Linux VMX domain

Current result:
----------------


Expected result:
----------------


Basic root-causing log:
----------------------
(XEN) BUG at common.c:822
(XEN) ----[ Xen-3.0-unstable  x86_64  debug=n  Not tainted ]----
(XEN) CPU:    2
(XEN) RIP:    e010:[<ffff83000011b678>] __bug+0x28/0x50
(XEN) RFLAGS: 0000000000010296   CONTEXT: hypervisor
(XEN) rax: 0000000000000000   rbx: ffff83000017ff48   rcx: 000000000000000a
(XEN) rdx: 0000000000001bce   rsi: 000000000000000a   rdi: ffff8300001d3334
(XEN) rbp: 0000000000000000   rsp: ffff830000febc10   r8:  0000000000000000
(XEN) r9:  0000000000000002   r10: 00000000ffffffff   r11: ffff83000011b7f0
(XEN) r12: 0000000000000336   r13: ffff8300001b4080   r14: 0000000000000020
(XEN) r15: ffff830000fa0080   cr0: 0000000080050033   cr4: 00000000000026b0
(XEN) cr3: 00000000af0e6000   cr2: 00002ade39b954c0
(XEN) ds: 0000   es: 0000   fs: 0063   gs: 0000   ss: e018   cs: e010
(XEN) Xen stack trace from rsp=ffff830000febc10:
(XEN)    0000000000000296 ffff8300001b4080 0000000000000004 0000000000000002
(XEN)    ffff830000150c04 0000000000000000 ffff8300001b4080 0000000000000000
(XEN)    ffff830000febf28 ffff8300001b4ef8 ffff830000febcbc ffff8300001d2000
(XEN)    ffff830000150d12 0000000000000000 ffff8300001b4080 ffff8300001b4080
(XEN)    ffff830000febe68 0000000043804860 0000000000000008 0000000043804860
(XEN)    ffff83000015309b 0000000000000246 ffff8300001b4080 ffff830000febe58
(XEN)    0000000043804860 0000000000000000 0000000000000008 0000000043804860
(XEN)    ffff83000011db8d 0000000000000001 000000fc00000000 ffff83000012003f
(XEN)    000000000000e010 0000000000000286 ffff830000febd38 000000000000e018
(XEN)    0000000020000001 0000003000000030 ffff830000febe18 ffff830000febd58
(XEN)    0000000000000000 fffffffffffffffd ffff830000febe58 00000000ffffffff
(XEN)    ffff830000276080 ffff830000febe58 0000000043804860 0000000000000000
(XEN)    0000000000000008 0000000000000000 ffff8300001069ab ffff830000febe58
(XEN)    ffff830000133103 0000000000000004 ffff83000012ee13 ffff830000276080
(XEN)    ffff830000febe58 00000000438044d0 0000000000000000 0000000000000004
(XEN)    ffff830000116f3f 0000000000000246 0000000000000001 0000000000fe0080
(XEN)    0000000080000003 00000000000af6b1 ffff828401b68ba8 ffff830000fe0080
(XEN)    ffff830000127c20 ffff830000fe0080 ffff83000012c03d ffff83000019a2a0
(XEN)    ffff830000198380 000000040000000a 0000000000000014 000000000000001f
(XEN)    0000000000000000 0000000000000000 0000000000000000 0000001f00084000
(XEN) Xen call trace:
(XEN)    [<ffff83000011b678>] __bug+0x28/0x50
(XEN)    [<ffff830000150c04>] shadow_prealloc+0x234/0x250
(XEN)    [<ffff830000150d12>] sh_set_allocation+0xf2/0x190
(XEN)    [<ffff83000015309b>] shadow_domctl+0x5fb/0x6a0
(XEN)    [<ffff83000011db8d>] arch_do_domctl+0x6d/0xb70
(XEN)    [<ffff83000012003f>] hypercall_create_continuation+0x16f/0x270
(XEN)    [<ffff8300001069ab>] do_domctl+0xbdb/0xc30
(XEN)    [<ffff830000133103>] copy_to_user+0x33/0x40
(XEN)    [<ffff83000012ee13>] arch_do_sysctl+0x133/0x170
(XEN)    [<ffff830000116f3f>] do_sysctl+0x32f/0x380
(XEN)    [<ffff830000127c20>] get_page_from_l1e+0x2b0/0x440
(XEN)    [<ffff83000012c03d>] do_update_descriptor+0x2ad/0x330
(XEN)    [<ffff830000161af2>] syscall_enter+0x62/0x67
(XEN)
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 2:
(XEN) BUG at common.c:822
(XEN) ****************************************
(XEN)
(XEN) Reboot in five seconds...


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