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From: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
To: dev@dpdk.org
Cc: thomas@monjalon.net,
	Darek Stojaczyk <dariusz.stojaczyk@intel.com>,
	qi.z.zhang@intel.com
Subject: [dpdk-dev] [PATCH 1/3] bus/pci: update device devargs on each rescan
Date: Mon,  5 Nov 2018 08:04:45 +0100	[thread overview]
Message-ID: <20181105070447.67700-1-dariusz.stojaczyk@intel.com> (raw)

Bus rescan is done e.g. during the device hotplug,
where devargs are re-allocated. By not updating the
rte_device->devargs pointer we potentially make it
a dangling one, as previous devargs could have been
(or will be soon) freed.

Fixes: 55e411b301c3 ("bus/pci: fix resource mapping override")
Cc: qi.z.zhang@intel.com

Signed-off-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
---
 drivers/bus/pci/linux/pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bus/pci/linux/pci.c b/drivers/bus/pci/linux/pci.c
index f87533c5c..f3172960e 100644
--- a/drivers/bus/pci/linux/pci.c
+++ b/drivers/bus/pci/linux/pci.c
@@ -349,10 +349,10 @@ pci_scan_one(const char *dirname, const struct rte_pci_addr *addr)
 			if (ret < 0) {
 				rte_pci_insert_device(dev2, dev);
 			} else { /* already registered */
+				pci_name_set(dev2);
 				if (!rte_dev_is_probed(&dev2->device)) {
 					dev2->kdrv = dev->kdrv;
 					dev2->max_vfs = dev->max_vfs;
-					pci_name_set(dev2);
 					memmove(dev2->mem_resource,
 						dev->mem_resource,
 						sizeof(dev->mem_resource));
-- 
2.17.1

             reply	other threads:[~2018-11-05  7:08 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-05  7:04 Darek Stojaczyk [this message]
2018-11-05  7:04 ` [dpdk-dev] [PATCH 2/3] devargs: delay freeing previous devargs when overriding them Darek Stojaczyk
2018-11-05  7:30   ` Thomas Monjalon
2018-11-05  8:25     ` Stojaczyk, Dariusz
2018-11-05  9:46       ` Thomas Monjalon
2018-11-05 16:24         ` Gaëtan Rivet
2018-11-05  7:04 ` [dpdk-dev] [PATCH 3/3] eal: handle bus rescan failures during hotplug Darek Stojaczyk
2018-11-05 14:10 ` [dpdk-dev] [PATCH 1/3] bus/pci: update device devargs on each rescan Gaëtan Rivet
2018-11-05 14:52   ` Stojaczyk, Dariusz
2018-11-05 16:27     ` Gaëtan Rivet
2018-11-06  5:40 ` [dpdk-dev] [PATCH v2] " Dariusz Stojaczyk
2018-11-06 22:21   ` Zhang, Qi Z
2018-11-06 23:40     ` Gaëtan Rivet
2018-11-12  0:47       ` Thomas Monjalon

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