From: Qi Zhang <qi.z.zhang@intel.com>
To: thomas@monjalon.net, anatoly.burakov@intel.com, gaetan.rivet@6wind.com
Cc: dev@dpdk.org, Qi Zhang <qi.z.zhang@intel.com>, stable@dpdk.org
Subject: [dpdk-stable] [PATCH 2/4] bus/pci: fix PCI address compare
Date: Thu, 12 Jul 2018 22:01:42 +0800 [thread overview]
Message-ID: <20180712140144.18146-3-qi.z.zhang@intel.com> (raw)
In-Reply-To: <20180712140144.18146-1-qi.z.zhang@intel.com>
When use memcmp to compare two PCI address, sizeof(struct rte_pci_addr)
is 4 bytes aligned, and it is 8. While only 7 byte of struct rte_pci_addr
is valid. So compare the 8th byte will cause the unexpected result, which
happens when repeatedly attach/detach a device.
Fixes: 94c0776b1bad ("vfio: support hotplug")
Cc: stable@dpdk.org
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
drivers/bus/pci/linux/pci_vfio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/bus/pci/linux/pci_vfio.c b/drivers/bus/pci/linux/pci_vfio.c
index aeeaa9ed8..933b95540 100644
--- a/drivers/bus/pci/linux/pci_vfio.c
+++ b/drivers/bus/pci/linux/pci_vfio.c
@@ -642,7 +642,7 @@ pci_vfio_unmap_resource(struct rte_pci_device *dev)
vfio_res_list = RTE_TAILQ_CAST(rte_vfio_tailq.head, mapped_pci_res_list);
/* Get vfio_res */
TAILQ_FOREACH(vfio_res, vfio_res_list, next) {
- if (memcmp(&vfio_res->pci_addr, &dev->addr, sizeof(dev->addr)))
+ if (rte_pci_addr_cmp(&vfio_res->pci_addr, &dev->addr))
continue;
break;
}
--
2.13.6
next prev parent reply other threads:[~2018-07-12 14:01 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20180712140144.18146-1-qi.z.zhang@intel.com>
2018-07-12 14:01 ` [dpdk-stable] [PATCH 1/4] eal: fix hotplug add and hotplug remove Qi Zhang
2018-07-18 13:10 ` Gaëtan Rivet
2018-07-12 14:01 ` Qi Zhang [this message]
2018-07-18 13:11 ` [dpdk-stable] [PATCH 2/4] bus/pci: fix PCI address compare Gaëtan Rivet
2018-07-12 14:01 ` [dpdk-stable] [PATCH 4/4] vfio: remove uneccessary IPC for group fd clear Qi Zhang
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