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DISCONTINUED:openSUSE:11.1:Update
xen
20204-x86-mce-panic.patch
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File 20204-x86-mce-panic.patch of Package xen
# HG changeset patch # User Keir Fraser <keir.fraser@citrix.com> # Date 1253003141 -3600 # Node ID 56595ee2720aded81ff3690948be5bcffe2b562c # Parent 5eb18970469000dc6636c4839dd071b56cfd9abd x86 mce: Fix panic in mcheck_mca_logout I met the following panic message in mcheck_mca_logout(). MSR_IA32_MCi_ADDR might take the values other than the machine address. FATAL PAGE FAULT occured when the non-existent address is passed to maddr_get_owner(). Signed-off-by: Kazuhiro Suzuki <kaz@jp.fujitsu.com> --- a/xen/arch/x86/cpu/mcheck/amd_k8.c +++ b/xen/arch/x86/cpu/mcheck/amd_k8.c @@ -148,8 +148,8 @@ void k8_machine_check(struct cpu_user_re if (status & MCi_STATUS_ADDRV) { rdmsrl(MSR_IA32_MC0_ADDR + 4 * i, addrv); - d = maddr_get_owner(addrv); - if (d != NULL) + if (mfn_valid(paddr_to_pfn(addrv)) + && (d = maddr_get_owner(addrv)) != NULL) mc_info.mc_domid = d->domain_id; } --- a/xen/arch/x86/cpu/mcheck/amd_nonfatal.c +++ b/xen/arch/x86/cpu/mcheck/amd_nonfatal.c @@ -143,8 +143,8 @@ void mce_amd_checkregs(void *info) if (status & MCi_STATUS_ADDRV) { rdmsrl(MSR_IA32_MC0_ADDR + i * 4, addrv); - d = maddr_get_owner(addrv); - if (d != NULL) + if (mfn_valid(paddr_to_pfn(addrv)) + && (d = maddr_get_owner(addrv)) != NULL) mc_info.mc_domid = d->domain_id; }
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