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| author | Jan Beulich <jbeulich@suse.com> | 2013-02-06 10:30:38 -0500 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2013-02-06 10:31:08 -0500 |
| commit | 51ac8893a7a51b196501164e645583bf78138699 (patch) | |
| tree | 632bf6bb0659f575876b58cc7d74567739351488 /drivers/xen/xen-pciback | |
| parent | 9174adbee4a9a49d0139f5d71969852b36720809 (diff) | |
| download | linux-51ac8893a7a51b196501164e645583bf78138699.tar.gz linux-51ac8893a7a51b196501164e645583bf78138699.tar.bz2 linux-51ac8893a7a51b196501164e645583bf78138699.zip | |
xen-pciback: rate limit error messages from xen_pcibk_enable_msi{,x}()
... as being guest triggerable (e.g. by invoking
XEN_PCI_OP_enable_msi{,x} on a device not being MSI/MSI-X capable).
This is CVE-2013-0231 / XSA-43.
Also make the two messages uniform in both their wording and severity.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/xen/xen-pciback')
| -rw-r--r-- | drivers/xen/xen-pciback/pciback_ops.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/xen/xen-pciback/pciback_ops.c b/drivers/xen/xen-pciback/pciback_ops.c index 97f5d264c31e..37c1f825f513 100644 --- a/drivers/xen/xen-pciback/pciback_ops.c +++ b/drivers/xen/xen-pciback/pciback_ops.c @@ -135,7 +135,6 @@ int xen_pcibk_enable_msi(struct xen_pcibk_device *pdev, struct pci_dev *dev, struct xen_pci_op *op) { struct xen_pcibk_dev_data *dev_data; - int otherend = pdev->xdev->otherend_id; int status; if (unlikely(verbose_request)) @@ -144,8 +143,9 @@ int xen_pcibk_enable_msi(struct xen_pcibk_device *pdev, status = pci_enable_msi(dev); if (status) { - printk(KERN_ERR "error enable msi for guest %x status %x\n", - otherend, status); + pr_warn_ratelimited(DRV_NAME ": %s: error enabling MSI for guest %u: err %d\n", + pci_name(dev), pdev->xdev->otherend_id, + status); op->value = 0; return XEN_PCI_ERR_op_failed; } @@ -223,10 +223,10 @@ int xen_pcibk_enable_msix(struct xen_pcibk_device *pdev, pci_name(dev), i, op->msix_entries[i].vector); } - } else { - printk(KERN_WARNING DRV_NAME ": %s: failed to enable MSI-X: err %d!\n", - pci_name(dev), result); - } + } else + pr_warn_ratelimited(DRV_NAME ": %s: error enabling MSI-X for guest %u: err %d!\n", + pci_name(dev), pdev->xdev->otherend_id, + result); kfree(entries); op->value = result; |