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| author |   Mario Preksavec | 2017-10-20 20:56:55 +0200 |
|---|---|---|
| committer |   Willy Sudiarto Raharjo | 2017-10-21 02:08:14 +0200 |
| commit | 139c45ee8aed136d55ae25517e67cd103978c9c3 (patch) | |
| tree | 0c1f8b0bb7353039941d468a024722add35b2d17 /system/xen/xsa/xsa237-4.9-0001-x86-dont-allow-MSI-pIRQ-mapping-on-unowned-device.patch | |
| parent | d7ebd09fcd7f59ba2cb12f45eecff627aec49860 (diff) | |
| download | slackbuilds-139c45ee8aed136d55ae25517e67cd103978c9c3.tar.gz | |
system/xen: XSA 237-245 update.
Signed-off-by: Mario Preksavec <mario@slackware.hr>
Diffstat (limited to 'system/xen/xsa/xsa237-4.9-0001-x86-dont-allow-MSI-pIRQ-mapping-on-unowned-device.patch')
| -rw-r--r-- | system/xen/xsa/xsa237-4.9-0001-x86-dont-allow-MSI-pIRQ-mapping-on-unowned-device.patch | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/system/xen/xsa/xsa237-4.9-0001-x86-dont-allow-MSI-pIRQ-mapping-on-unowned-device.patch b/system/xen/xsa/xsa237-4.9-0001-x86-dont-allow-MSI-pIRQ-mapping-on-unowned-device.patch new file mode 100644 index 0000000000..7c9dff9672 --- /dev/null +++ b/system/xen/xsa/xsa237-4.9-0001-x86-dont-allow-MSI-pIRQ-mapping-on-unowned-device.patch @@ -0,0 +1,27 @@ +From: Jan Beulich <jbeulich@suse.com> +Subject: x86: don't allow MSI pIRQ mapping on unowned device + +MSI setup should be permitted only for existing devices owned by the +respective guest (the operation may still be carried out by the domain +controlling that guest). + +This is part of XSA-237. + +Reported-by: HW42 <hw42@ipsumj.de> +Signed-off-by: Jan Beulich <jbeulich@suse.com> +Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com> + +--- a/xen/arch/x86/irq.c ++++ b/xen/arch/x86/irq.c +@@ -1963,7 +1963,10 @@ int map_domain_pirq( + if ( !cpu_has_apic ) + goto done; + +- pdev = pci_get_pdev(msi->seg, msi->bus, msi->devfn); ++ pdev = pci_get_pdev_by_domain(d, msi->seg, msi->bus, msi->devfn); ++ if ( !pdev ) ++ goto done; ++ + ret = pci_enable_msi(msi, &msi_desc); + if ( ret ) + { |