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vlib: pci: set pci driver name to none when no driver is loaded

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If no Linux PCI driver module is loaded, then the driver_name in the PCI
info struct is NULL. This can triggers crash when checking driver name
eg. in vlib_pci_device_open().
Default to "<NONE>" as driver name, which should never match.

Type: fix

Change-Id: I9e69889a7566467bd8220b92bbbaa72ada957257
Signed-off-by: Benoît Ganne <bganne@cisco.com>
(cherry picked from commit 0eae2bb1f1199f7dcb6a8c62b1ea612ed9ee4ae1)
This commit is contained in:
Benoît Ganne
2019-10-04 17:30:21 +02:00
committed by Andrew Yourtchenko
parent b022d3195a
commit a086e304e4
1 changed files with 2 additions and 0 deletions
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2
src/vlib/linux/pci.c
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@ -291,6 +291,8 @@ vlib_pci_get_device_info (vlib_main_t * vm, vlib_pci_addr_t * addr,
vec_reset_length (f);
f = format (f, "%v/driver%c", dev_dir_name, 0);
di->driver_name = clib_sysfs_link_to_name ((char *) f);
if (!di->driver_name)
di->driver_name = format (0, "<NONE>%c", 0);
di->iommu_group = -1;
if (lvm->container_fd != -1)