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5604f239-x86-PV-properly-populate-descriptor-tables.patch 561bbc8b-VT-d-don-t-suppress-invalidation-address-write-when-0.patch 561d2046-VT-d-use-proper-error-codes-in-iommu_enable_x2apic_IR.patch 561d20a0-x86-hide-MWAITX-from-PV-domains.patch 561e3283-x86-NUMA-fix-SRAT-table-processor-entry-handling.patch - bsc#951845 - VUL-0: CVE-2015-7972: xen: x86: populate-on-demand balloon size inaccuracy can crash guests (XSA-153) xsa153-libxl.patch - bsc#950703 - VUL-1: CVE-2015-7969: xen: leak of main per-domain vcpu pointer array (DoS) (XSA-149) xsa149.patch - bsc#950705 - VUL-1: CVE-2015-7969: xen: x86: leak of per-domain profiling-related vcpu pointer array (DoS) (XSA-151) xsa151.patch - bsc#950706 - VUL-0: CVE-2015-7971: xen: x86: some pmu and profiling hypercalls log without rate limiting (XSA-152) xsa152.patch - Dropped 55dc7937-x86-IO-APIC-don-t-create-pIRQ-mapping-from-masked-RTE.patch 5604f239-x86-PV-properly-populate-descriptor-tables.patch - bsc#932267 - VUL-1: CVE-2015-4037: qemu,kvm,xen: insecure temporary file use in /net/slirp.c CVE-2015-4037-qemuu-smb-config-dir-name.patch CVE-2015-4037-qemut-smb-config-dir-name.patch - bsc#877642 - VUL-0: CVE-2014-0222: qemu: qcow1: validate L2 table size to avoid integer overflows OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=382
24 lines
852 B
Diff
24 lines
852 B
Diff
# Commit c7d5d5d8ea1ecbd6ef8b47dace4dec825f0f6e48
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# Date 2015-09-16 11:20:27 +0200
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# Author Jan Beulich <jbeulich@suse.com>
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# Committer Jan Beulich <jbeulich@suse.com>
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x86/MSI: fail if no hardware support
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This is to guard against buggy callers (luckily Dom0 only) invoking
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the respective hypercall for a device not being MSI-capable.
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Signed-off-by: Jan Beulich <jbeulich@suse.com>
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Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
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--- a/xen/arch/x86/msi.c
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+++ b/xen/arch/x86/msi.c
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@@ -696,6 +696,8 @@ static int msi_capability_init(struct pc
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ASSERT(spin_is_locked(&pcidevs_lock));
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pos = pci_find_cap_offset(seg, bus, slot, func, PCI_CAP_ID_MSI);
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+ if ( !pos )
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+ return -ENODEV;
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control = pci_conf_read16(seg, bus, slot, func, msi_control_reg(pos));
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maxvec = multi_msi_capable(control);
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if ( nvec > maxvec )
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