From: Igor Mammedov <imammedo@redhat.com>
To: xen-devel@lists.xensource.com
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
jeremy.fitzhardinge@citrix.co, stefano.stabellini@eu.citrix.com
Subject: FC15: 32-bit PV guest crash on restore on x64_86 host
Date: Wed, 04 May 2011 21:58:01 +0200 [thread overview]
Message-ID: <4DC1AFC9.2070407@redhat.com> (raw)
On restore 32bit PV guest crashes on x64_86 host, while x64_86 PV guest
works as expected.
Bisecting of upstream kernel shows following offending commit:
commit 448f2831934381e9d3c4d93e700ba7bbe14612dc
Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Date: Wed Dec 15 13:19:33 2010 +0000
xen: add m2p override mechanism
More details from https://bugzilla.redhat.com/show_bug.cgi?id=700752
excerpt from hypervisor.log:
(XEN) mm.c:630:d16 Non-privileged (16) attempt to map I/O space 2712536c5e
(XEN) mm.c:3619:d16 ptwr_emulate: fixing up invalid PAE PTE c082712536c5e063
(XEN) /builddir/build/BUILD/kernel-2.6.18/xen/include/asm/mm.h:225:d16 Error
pfn 36c5b: rd=ffff8300afdca080, od=ffff8300af1f0080, caf=80000002,
taf=00000000e8000001
(XEN) mm.c:654:d16 Error getting mfn 36c5b (pfn 3b325b) from L1 entry
0000000036c5b063 for dom16
(XEN) mm.c:3619:d16 ptwr_emulate: fixing up invalid PAE PTE 0000000036c5b063
(XEN) Pagetable walk from 00000000eb40ff98:
(XEN) L4[0x000] = 0000000066ad4027 0000000000027494
(XEN) L3[0x003] = 0000000066eae027 0000000000027492
(XEN) L2[0x15a] = 0000000237400067 0000000000001600
(XEN) L1[0x00f] = 80000002373f8061 000000000002b40f
(XEN) domain_crash_sync called from entry.S
(XEN) Domain 16 (vcpu#0) crashed on cpu#1:
(XEN) ----[ Xen-3.1.2-257.el5 x86_64 debug=n Not tainted ]----
(XEN) CPU: 1
(XEN) RIP: 0061:[<00000000c04047ee>]
(XEN) RFLAGS: 0000000000010213 CONTEXT: guest
(XEN) rax: 00000000f4d78000 rbx: 00000000eb4aea40 rcx: 000000000000007b
(XEN) rdx: 00000000eb4aea40 rsi: 00000000eb410024 rdi: 00000000c0827117
(XEN) rbp: 00000000eb40ffa0 rsp: 00000000eb40ffa0 r8: 0000000000000000
(XEN) r9: 0000000000000000 r10: 0000000000000000 r11: 0000000000000000
(XEN) r12: 0000000000000000 r13: 0000000000000000 r14: 0000000000000000
(XEN) r15: 0000000000000000 cr0: 000000008005003b cr4: 00000000000006f0
(XEN) cr3: 0000000250002000 cr2: 00000000f4d78008
(XEN) ds: 007b es: 007b fs: 00d8 gs: 00e0 ss: 0069 cs: 0061
(XEN) Guest stack trace from esp=eb40ffa0:
(XEN) eb41001c c0827152 36c5d063 80000002 36c5c063 80000002 36c5b062 00000000
(XEN) 00000008 eb4aea40 00000000 80000002 36c58063 80000002 36c57063 80000002
(XEN) 36c56063 80000002 36c55063 80000002 36c54063 80000002 36c53063 80000002
(XEN) mm.c:630:d0 Non-privileged (16) attempt to map I/O space 00000000
gdb guest kernel stack trace:
#0 0xc04047ee in xen_read_cr2 () at arch/x86/xen/mmu.c:1244
#1 0xc0827152 in read_cr2 (regs=0xeb410024, error_code=0)
at
/usr/src/debug/kernel-2.6.38.fc15/linux-2.6.38.i686/arch/x86/include/asm/paravirt.h:64
#2 do_page_fault (regs=0xeb410024, error_code=0) at arch/x86/mm/fault.c:974
#3<signal handler called>
...
next reply other threads:[~2011-05-04 19:58 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-04 19:58 Igor Mammedov [this message]
2011-05-04 20:19 ` FC15: 32-bit PV guest crash on restore on x64_86 host Konrad Rzeszutek Wilk
2011-05-04 21:03 ` Igor Mammedov
2011-05-04 21:13 ` Konrad Rzeszutek Wilk
2011-05-05 13:32 ` Stefano Stabellini
2011-05-05 21:28 ` Konrad Rzeszutek Wilk
2011-05-06 16:16 ` Igor Mammedov
2011-05-06 17:12 ` Konrad Rzeszutek Wilk
2011-05-06 17:41 ` Igor Mammedov
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