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authorOlivier Fourdan <ofourdan@redhat.com>2018-10-24 10:11:49 +0200
committerOlivier Fourdan <ofourdan@redhat.com>2018-10-24 10:22:25 +0200
commit44f3dd08f99ba67e967980daaea2b800c68e2659 (patch)
tree52e2cca9844787da1d9a7444544fc44bd6218c6a
parent13854f603f720c45caf51d785a874d3c7e8c5f58 (diff)
linux: Set number of devices to 0 in case of error
pci_sys is a global variable which is populated on init, and in case of error reading sysfs on Linux, the devices are NULL, but the number of devices is left unchanged. As a result, we may crash in `pci_device_next()` which relies on the number of devices. To fix the issue, simply reset the number of devices to zero in case of error so we don't try to access indices of a NULL array later on. Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
-rw-r--r--src/linux_sysfs.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/linux_sysfs.c b/src/linux_sysfs.c
index a8bc2e1..e74ad72 100644
--- a/src/linux_sysfs.c
+++ b/src/linux_sysfs.c
@@ -264,6 +264,7 @@ populate_entries( struct pci_system * p )
if (err) {
free(p->devices);
p->devices = NULL;
+ p->num_devices = 0;
}
return err;