This patch fixes segmentation fault during accessing already freed
pci device resource files, as after freeing res_attr and res_attr_wc
elements, in pci_remove_resource_files function, they are left as
dangling pointers.
Signed-off-by: Danijel Slivka <danijel.slivka@xxxxxxx>
---
drivers/pci/pci-sysfs.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index f8afd54ca3e1..bbdf6c57fcda 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -1130,12 +1130,14 @@ static void pci_remove_resource_files(struct pci_dev *pdev)
if (res_attr) {
sysfs_remove_bin_file(&pdev->dev.kobj, res_attr);
kfree(res_attr);
+ pdev->res_attr[i] = NULL;
}
res_attr = pdev->res_attr_wc[i];
if (res_attr) {
sysfs_remove_bin_file(&pdev->dev.kobj, res_attr);
kfree(res_attr);
+ pdev->res_attr_wc[i] = NULL;
}
}
}
--
2.20.1
