pmaports/temp/petitboot/udev-check-idpath-for-nullptr-before-calling-strcmp.patch
2023-02-20 13:19:51 +01:00

27 lines
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Diff

From 3ae8b7b28757a4af3e3fcd9e7380d7dfbb6b295d Mon Sep 17 00:00:00 2001
From: Julian Winkler <julian.winkler1@web.de>
Date: Sat, 18 Feb 2023 22:55:01 +0100
Subject: [PATCH 2/2] udev: check idpath for nullptr before calling strcmp
Apparently the ID_PATH property can be null, which resulted in segfaults
without this patch. Fallback to empty string instead.
---
discover/udev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/discover/udev.c b/discover/udev.c
index c81f3c4..b078dd7 100644
--- a/discover/udev.c
+++ b/discover/udev.c
@@ -181,7 +181,7 @@ static int udev_handle_block_add(struct pb_udev *udev, struct udev_device *dev,
/* We may see multipath devices; they'll have the same uuid as an
* existing device, so only parse the first. */
uuid = udev_device_get_property_value(dev, "ID_FS_UUID");
- idpath = udev_device_get_property_value(dev, "ID_PATH");
+ idpath = udev_device_get_property_value(dev, "ID_PATH") ?: "";
if (uuid) {
ddev = device_lookup_by_uuid(udev->handler, uuid);
if (ddev) {
--
2.39.1