diff --git a/src/platform/tests/test-common.c b/src/platform/tests/test-common.c
index 40cce96f9d..67e74c13f2 100644
--- a/src/platform/tests/test-common.c
+++ b/src/platform/tests/test-common.c
@@ -1937,47 +1937,12 @@ main (int argc, char **argv)
 			g_error ("unshare(CLONE_NEWNET|CLONE_NEWNS) failed with %s (%d)", strerror (errsv), errsv);
 		}
 
-		/* Below we need a read-only /sys (to signal that we're in an environment
-		 * we don't have udev and writable /sys/devices so that we still are able
-		 * to test device classes that modify the device attributes (such as bridges).
-		 *
-		 * We use two sysfs instances to achieve this, binding the /device subtree
-		 * of the writeable one to the read-only one.
-		 *
-		 * We abuse a /sys/kernel/debug for our temporary writable sysfs mount,
-		 * just because it's guarranteed to exist and mounts are allowed there even
-		 * after the sysfs mount point hardening [linux 0cbee99269]. It's just in
-		 * our mount namespace, we release it quickly and don't need debugfs anyway...
-		 * An alrernative would be to create a temporary directory, but that seems
-		 * like an overkill. */
-
-		/* Make the mounts below /sys private to our namespace. Other mounts
-		 * wouldn't be permitted for good reasons. */
+		/* We need a read-only /sys so that the platform knows there's no udev. */
 		mount (NULL, "/sys", "sysfs", MS_SLAVE, NULL);
-
-		/* Mount the read-only sysfs. */
 		if (mount ("sys", "/sys", "sysfs", MS_RDONLY, NULL) != 0) {
 			errsv = errno;
 			g_error ("mount(\"/sys\") failed with %s (%d)", strerror (errsv), errsv);
 		}
-
-		/* Create the writable /sys/devices tree. */
-		if (mount ("sys", "/sys/kernel/debug", "sysfs", 0, NULL) != 0) {
-			errsv = errno;
-			g_error ("mount(\"/sys/kernel/debug\") failed with %s (%d)", strerror (errsv), errsv);
-		}
-
-		/* Bind mound the writable device tree to the read-only sysfs. */
-		if (mount ("/sys/kernel/debug/devices", "/sys/devices", "sysfs", MS_BIND, NULL) != 0) {
-			errsv = errno;
-			g_error ("mount(\"/sys\") failed with %s (%d)", strerror (errsv), errsv);
-		}
-
-		/* Release the temporary mount now that we bound the /devices subtree. */
-		if (umount ("/sys/kernel/debug") != 0) {
-			errsv = errno;
-			g_error ("umount(\"/sys/kernel/debug\") failed with  %s (%d)", strerror (errsv), errsv);
-		}
 	}
 
 	nmtstp_setup_platform ();