http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1726
Summary: Dom0 crashes on Core2 when dom0_mem is no more than
1972MB
Product: Xen
Version: unstable
Platform: Other
OS/Version: Windows
Status: NEW
Severity: normal
Priority: P2
Component: Hypervisor
AssignedTo: xen-bugs@lists.xensource.com
ReportedBy: shaohui.zheng@intel.com
Environment:
------------
Service Arch (ia32/ia32e/IA64):
Guest Arch (ia32/ia32e/IA64):
Guest OS Type (Linux/Windows):
Change Set:
Hardware:
Other:
Bug detailed description:
--------------------------
Dom0 kernel bug and crash on Core2 E6750 platform when dom0_mem is set no more
than 1972MB. The platform that shows the bug is HP 7800p minitower with one
E6750 processor, 4GB memory and one 250GB SATA disk.
Reproduce steps:
----------------
1. Use Core2 processor, use xen-unstable revision 22653.
2. Boot Xen with dom0_mem less or equal to 1972MB.
Current result:
----------------
Xen failed to get l1e in ptwr_emulate. Dom0 crash.
Expected result:
----------------
Dom0 boots successfully.
Basic root-causing log:
----------------------
[ 0.235838] Linux agpgart interface v0.103
[ 0.235877] agpgart-intel 0000:00:00.0: Intel Q35 Chipset
[ 0.237152] agpgart-intel 0000:00:00.0: detected 6140K stolen memory
(XEN) mm.c:889:d0 Error getting mfn 40900 (pfn 5555555555555555) from L1 entry
8000000040900473 for l1e_owner=0, pg_owner=0
(XEN) mm.c:889:d0 Error getting mfn 40900 (pfn 5555555555555555) from L1 entry
8000000040900473 for l1e_owner=0, pg_owner=0
(XEN) mm.c:4958:d0 ptwr_emulate: could not get_page_from_l1e()
[ 0.280076] BUG: unable to handle kernel paging request at ffff88003fc56360
[ 0.280092] IP: [<ffffffff810370e5>] xen_set_pte+0x3e/0x4b
[ 0.280107] PGD 1002067 PUD 1006067 PMD 2e8067 PTE 801000003fc56065
[ 0.280127] Oops: 0003 [#1] SMP
[ 0.280138] last sysfs file:
[ 0.280145] CPU 1
[ 0.280153] Modules linked in:
[ 0.280163] Pid: 1, comm: swapper Not tainted 2.6.32.26 #1 HP Compaq dc7800p
Convertible Minitow er
[ 0.280171] RIP: e030:[<ffffffff810370e5>] [<ffffffff810370e5>]
xen_set_pte+0x3e/0x4b
[ 0.280183] RSP: e02b:ffff88003fc89ab0 EFLAGS: 00010246
[ 0.280189] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
8000000040900473
[ 0.280197] RDX: 0000000000000000 RSI: 8000000040900473 RDI:
ffff88003fc56360
[ 0.280204] RBP: ffff88003fc89ad0 R08: 0000000000000000 R09:
ffffffff818720d0
[ 0.280211] R10: 8000000000000573 R11: 800000000000056b R12:
8000000040900473
[ 0.280218] R13: ffff88003fc56360 R14: ffffc9000006c000 R15:
ffff88003fc56360
[ 0.280228] FS: 0000000000000000(0000) GS:ffff88002806c000(0000)
knlGS:0000000000000000
[ 0.280236] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 0.280243] CR2: ffff88003fc56360 CR3: 0000000001001000 CR4:
0000000000002660
[ 0.280250] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 0.280258] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 0.280265] Process swapper (pid: 1, threadinfo ffff88003fc88000, task
ffff88003fc80000)
[ 0.280272] Stack:
[ 0.280277] ffffffff811e4e11 ffff88003fc80000 ffffffff817c2c80
8000000040900473
[ 0.280293] <0> ffff88003fc89b30 ffffffff81038a09 ffff88003fc89b30
ffffffff8103620f
[ 0.280303] <0> 800000000000056b 8000000000000573 ffffffff818720d0
ffff88003fc56360
[ 0.280303] Call Trace:
[ 0.280303] [<ffffffff811e4e11>] ? rb_insert_color+0xb9/0xe3
[ 0.280303] [<ffffffff81038a09>] xen_set_pte_at+0xdb/0xea
[ 0.280303] [<ffffffff8103620f>] ? __raw_callee_save_xen
--
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Summary: Dom0 crashes on Core2 when dom0_mem is no more than
1972MB
Product: Xen
Version: unstable
Platform: Other
OS/Version: Windows
Status: NEW
Severity: normal
Priority: P2
Component: Hypervisor
AssignedTo: xen-bugs@lists.xensource.com
ReportedBy: shaohui.zheng@intel.com
Environment:
------------
Service Arch (ia32/ia32e/IA64):
Guest Arch (ia32/ia32e/IA64):
Guest OS Type (Linux/Windows):
Change Set:
Hardware:
Other:
Bug detailed description:
--------------------------
Dom0 kernel bug and crash on Core2 E6750 platform when dom0_mem is set no more
than 1972MB. The platform that shows the bug is HP 7800p minitower with one
E6750 processor, 4GB memory and one 250GB SATA disk.
Reproduce steps:
----------------
1. Use Core2 processor, use xen-unstable revision 22653.
2. Boot Xen with dom0_mem less or equal to 1972MB.
Current result:
----------------
Xen failed to get l1e in ptwr_emulate. Dom0 crash.
Expected result:
----------------
Dom0 boots successfully.
Basic root-causing log:
----------------------
[ 0.235838] Linux agpgart interface v0.103
[ 0.235877] agpgart-intel 0000:00:00.0: Intel Q35 Chipset
[ 0.237152] agpgart-intel 0000:00:00.0: detected 6140K stolen memory
(XEN) mm.c:889:d0 Error getting mfn 40900 (pfn 5555555555555555) from L1 entry
8000000040900473 for l1e_owner=0, pg_owner=0
(XEN) mm.c:889:d0 Error getting mfn 40900 (pfn 5555555555555555) from L1 entry
8000000040900473 for l1e_owner=0, pg_owner=0
(XEN) mm.c:4958:d0 ptwr_emulate: could not get_page_from_l1e()
[ 0.280076] BUG: unable to handle kernel paging request at ffff88003fc56360
[ 0.280092] IP: [<ffffffff810370e5>] xen_set_pte+0x3e/0x4b
[ 0.280107] PGD 1002067 PUD 1006067 PMD 2e8067 PTE 801000003fc56065
[ 0.280127] Oops: 0003 [#1] SMP
[ 0.280138] last sysfs file:
[ 0.280145] CPU 1
[ 0.280153] Modules linked in:
[ 0.280163] Pid: 1, comm: swapper Not tainted 2.6.32.26 #1 HP Compaq dc7800p
Convertible Minitow er
[ 0.280171] RIP: e030:[<ffffffff810370e5>] [<ffffffff810370e5>]
xen_set_pte+0x3e/0x4b
[ 0.280183] RSP: e02b:ffff88003fc89ab0 EFLAGS: 00010246
[ 0.280189] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
8000000040900473
[ 0.280197] RDX: 0000000000000000 RSI: 8000000040900473 RDI:
ffff88003fc56360
[ 0.280204] RBP: ffff88003fc89ad0 R08: 0000000000000000 R09:
ffffffff818720d0
[ 0.280211] R10: 8000000000000573 R11: 800000000000056b R12:
8000000040900473
[ 0.280218] R13: ffff88003fc56360 R14: ffffc9000006c000 R15:
ffff88003fc56360
[ 0.280228] FS: 0000000000000000(0000) GS:ffff88002806c000(0000)
knlGS:0000000000000000
[ 0.280236] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 0.280243] CR2: ffff88003fc56360 CR3: 0000000001001000 CR4:
0000000000002660
[ 0.280250] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 0.280258] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 0.280265] Process swapper (pid: 1, threadinfo ffff88003fc88000, task
ffff88003fc80000)
[ 0.280272] Stack:
[ 0.280277] ffffffff811e4e11 ffff88003fc80000 ffffffff817c2c80
8000000040900473
[ 0.280293] <0> ffff88003fc89b30 ffffffff81038a09 ffff88003fc89b30
ffffffff8103620f
[ 0.280303] <0> 800000000000056b 8000000000000573 ffffffff818720d0
ffff88003fc56360
[ 0.280303] Call Trace:
[ 0.280303] [<ffffffff811e4e11>] ? rb_insert_color+0xb9/0xe3
[ 0.280303] [<ffffffff81038a09>] xen_set_pte_at+0xdb/0xea
[ 0.280303] [<ffffffff8103620f>] ? __raw_callee_save_xen
--
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