This bug was fixed in the package linux-azure - 4.18.0-1013.13
---------------
linux-azure (4.18.0-1013.13) cosmic; urgency=medium
* linux-azure: 4.18.0-1013.13 -proposed tracker (LP: #1818128)
* linux-azure - Add the same 4.15 InfiniBand configuration settings to the
4.18 kernel (LP: #1818141)
- [Config] linux-azure: CONFIG_INFINIBAND_{USER_MAD,IPOIB,IPOIB_DEBUG}=y
* Packaging resync (LP: #1786013)
- [Packaging] resync getabis
- [Packaging] update helper scripts
* [Hyper-V][SAUCE] pci-hyperv: Use only 16 bit integer for PCI domain
(LP: #1684971)
- SAUCE: pci-hyperv: Use only 16 bit integer for PCI domain
-- Marcelo Henrique Cerri <marcelo.ce...@canonical.com> Thu, 28 Feb
2019 19:09:26 -0300
** Changed in: linux-azure (Ubuntu Cosmic)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1684971
Title:
[Hyper-V][SAUCE] pci-hyperv: Use only 16 bit integer for PCI domain
Status in linux package in Ubuntu:
Fix Released
Status in linux-azure package in Ubuntu:
Fix Released
Status in linux source package in Xenial:
Fix Released
Status in linux-azure source package in Xenial:
Invalid
Status in linux source package in Yakkety:
Fix Released
Status in linux-azure source package in Yakkety:
Invalid
Status in linux source package in Zesty:
Fix Released
Status in linux-azure source package in Zesty:
Invalid
Status in linux source package in Artful:
Fix Released
Status in linux-azure source package in Artful:
Invalid
Status in linux source package in Cosmic:
Invalid
Status in linux-azure source package in Cosmic:
Fix Released
Bug description:
The following patch fixes a problem with "[PATCH] pci-hyperv: Use
device serial number as PCI domain" where some drivers were expecting
a u16 instead of a u32 for PCI device serial numbers, as observed by
Oops and hangs in Azure on NC and NV GPU instances.
From: Haiyang Zhang <haiya...@microsoft.com>
This patch uses the lower 16 bits of the serial number as PCI
domain, otherwise some drivers may not be able to handle it.
Signed-off-by: Haiyang Zhang <haiya...@microsoft.com>
---
drivers/pci/host/pci-hyperv.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/host/pci-hyperv.c
index e73880c..b18dff3 100644
--- a/drivers/pci/host/pci-hyperv.c
+++ b/drivers/pci/host/pci-hyperv.c
@@ -1334,9 +1334,11 @@ static void put_pcichild(struct hv_pci_dev *hpdev,
* can have shorter names than based on the bus instance UUID.
* Only the first device serial number is used for domain, so the
* domain number will not change after the first device is added.
+ * The lower 16 bits of the serial number is used, otherwise some
+ * drivers may not be able to handle it.
*/
if (list_empty(&hbus->children))
- hbus->sysdata.domain = desc->ser;
+ hbus->sysdata.domain = desc->ser & 0xFFFF;
list_add_tail(&hpdev->list_entry, &hbus->children);
spin_unlock_irqrestore(&hbus->device_list_lock, flags);
return hpdev;
--
1.7.1
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