[Xen-devel] xen/stable 2.6.32.9 32bit dom0 kernel crashes early on boot

[Pasi Kärkkäinen <pasik@xxxxxx>]

Hello,

32bit PAE 2.6.32.9 xen/stable dom0 kernel crashes early on my (old) testbox..

http://pasik.reaktio.net/xen/pv_ops-dom0-debug/pv_ops-dom0-xen-stable-2.6.32.9-32b-crash-log01.txt

ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1])
ACPI: IOAPIC (id[0x04] address[0xfec00000] gsi_base[0])
(XEN) mm.c:1746:d0 Bad L1 flags 80000100
(XEN) mm.c:778:d0 Bad L1 flags 80000100
(XEN) mm.c:4637:d0 ptwr_emulate: could not get_page_from_l1e()
(XEN) d0:v0: unhandled page fault (ec=0003)
(XEN) Pagetable walk from c0259fd0:
(XEN)  L3[0x003] = 000000003c912001 00000912
(XEN)  L2[0x001] = 000000003d3b6067 000013b6 
(XEN)  L1[0x059] = 000000003c259061 00000259
(XEN) domain_crash_sync called from entry.S (ff1cb962)
(XEN) Domain 0 (vcpu#0) crashed on cpu#0:
(XEN) ----[ Xen-4.0.0-rc5  x86_32p  debug=y  Not tainted ]----
(XEN) CPU:    0
(XEN) EIP:    e019:[<c0405dbe>]
(XEN) EFLAGS: 00000296   EM: 1   CONTEXT: pv guest
(XEN) eax: 00000000   ebx: c0259fd0   ecx: 80000000   edx: 3c913163
(XEN) esi: 80000000   edi: 00000000   ebp: c0848e54   esp: c0848e34
(XEN) cr0: 8005003b   cr4: 000006f0   cr3: 00bc6c80   cr2: c0259fd0
(XEN) ds: e021   es: e021   fs: 00d8   gs: 0000   ss: e021   cs: e019
(XEN) Guest stack trace from esp=c0848e34:
(XEN)    00000003 c0405dbe 0001e019 00010096 3c913163 deadbeef deadbeef f57fa000
(XEN)    c0848e74 c0405f1c c0259fd0 80000000 3c913163 80000000 c0259fd0 f57fa000
(XEN)    c0848e98 c04281f9 3c913163 80000000 80000000 00913163 00005000 f57ff000
(XEN)    0000017b c0848ea8 c042747f 00000005 80000000 c0848ec4 c0404f98 c07c3370
(XEN)    c0848ec4 00000000 00000000 00000004 c0848ee0 c089aeec 0000017b 80000000
(XEN)    f55002cc f55002cc c07c3370 c0848eec c0895f7a 00000001 c0848f10 c08ad384
(XEN)    f5500310 00000001 00000090 f5500280 00000000 00000000 c12aea00 c0848f20
(XEN)    c08ad3fa c0895f4d 00000040 c0848f30 c089650f 168ff000 2d1fe000 c0848fac
(XEN)    c088f56a 00000000 00000000 012aea00 00000000 00000000 00ad5000 00000000
(XEN)    c0848f60 00000092 00000000 2d1fe000 00000000 40000000 00000000 c0945be4
(XEN)    00000000 00000000 00000000 00000000 c085ab8c c0848f9c c04063b6 00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 c085ab8c c0848fc4 c088a5bd
(XEN)    c07b9c5c c06e8010 c08bfb44 00ad5000 c0848fd4 c088a0a8 00ad5000 c08be930
(XEN)    c0848ffc c088d113 1fc89375 80000401 00010800 00000f34 00000001 00000000
(XEN)    c13af000 00000000 00000000 3d3b1001 00000000 3d3b2001 00000000 3d3b3001
(XEN)    00000000 3c912001 00000000 00000000 00000000 00000000 00000000 00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
(XEN) Domain 0 crashed: rebooting machine in 5 seconds.



(gdb) x/i 0xc0405dbe
0xc0405dbe <xen_set_pte+137>:   mov    %edx,(%ebx)

(gdb) list *0xc0405dbe
0xc0405dbe is in xen_set_pte (arch/x86/xen/mmu.c:703).
698             ADD_STATS(pte_update_batched, paravirt_get_lazy_mode() == 
PARAVIRT_LAZY_MMU);
699
700     #ifdef CONFIG_X86_PAE
701             ptep->pte_high = pte.pte_high;
702             smp_wmb();
703             ptep->pte_low = pte.pte_low;
704     #else
705             *ptep = pte;
706     #endif
707     }


CONFIG_HIGHPTE is disabled.

.config:
http://pasik.reaktio.net/xen/pv_ops-dom0-debug/config-2.6.32.9-pvops-dom0-xen-stable-x86_32

-- Pasi



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