From: Jean Delvare <jdelvare@suse.de>
Date: Mon, 23 Feb 2026 16:11:41 +0000 (+0100)
Subject: platform-intel: Deal with hot-unplugged devices
X-Git-Tag: mdadm-4.6~4
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=adfa3968c62c2537600fba066e7981eaebf69ef4;p=thirdparty%2Fmdadm.git

platform-intel: Deal with hot-unplugged devices

Don't assume that realpath() will always succeed, if a device gets
hot-unplugged then realpath() can fail. Handle the situation
gracefully, and report an error only if the failure is for a
different reason.

Reported-by: Jochen De Smet <jochen.desmet@dell.com>
Co-developed-by: Jochen De Smet <jochen.desmet@dell.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Martin Wilck <mwilck@suse.com>
---

diff --git a/platform-intel.c b/platform-intel.c
index 270aef36..963edcc4 100644
--- a/platform-intel.c
+++ b/platform-intel.c
@@ -233,6 +233,13 @@ struct sys_dev *find_driver_devices(const char *bus, const char *driver)
 		if (type == SYS_DEV_NVME) {
 			struct sys_dev *dev;
 			char *rp = realpath(path, NULL);
+			if (!rp) {
+				/* Device may have been hot-unplugged */
+				if (errno != ENOENT)
+					pr_err("Unable to get real path for '%s', err = %d\n",
+					       path, errno);
+				continue;
+			}
 			for (dev = vmd; dev; dev = dev->next) {
 				if ((strncmp(dev->path, rp, strlen(dev->path)) == 0))
 					skip = 1;
@@ -244,6 +251,13 @@ struct sys_dev *find_driver_devices(const char *bus, const char *driver)
 		if (type == SYS_DEV_SATA) {
 			struct sys_dev *dev;
 			char *rp = realpath(path, NULL);
+			if (!rp) {
+				/* Device may have been hot-unplugged */
+				if (errno != ENOENT)
+					pr_err("Unable to get real path for '%s', err = %d\n",
+					       path, errno);
+				continue;
+			}
 			for (dev = vmd; dev; dev = dev->next) {
 				if ((strncmp(dev->path, rp, strlen(dev->path)) == 0))
 					type = SYS_DEV_SATA_VMD;