What were you trying to do that didn't work?

When trying to build a kdump initrd on aarch64 for a nfs target it prints a 'grep: warning: stray \ before x' message. The warning is emitted by dracut-functions.sh:get_maj_min called from dracut-functions:get_persistent_dev when iterating over the different /dev/disk/by-*. On aarch64 there's a /dev/disk/by-partlabel/EFI\x20System\x20Partition which triggers the warning.

The following patch suppresses the warning for me

diff --git a/dracut-functions.sh b/dracut-functions.sh
index 4535871b..781bc571 100755
--- a/dracut-functions.sh
+++ b/dracut-functions.sh
@@ -243,7 +243,7 @@ get_maj_min() {
     local _out
 
     if [[ $get_maj_min_cache_file ]]; then
-        _out="$(grep -m1 -oE "^$1 \S+$" "$get_maj_min_cache_file" | awk '{print $NF}')"
+        _out="$(grep -m1 -oE "^${1//\\/\\\\} \S+$" "$get_maj_min_cache_file" | awk '{print $NF}')"
     fi
 
     if ! [[ "$_out" ]]; then

Not sure though if everything still works as intended.

Please provide the package NVR for which bug is seen:

dracut-101-2.el10.aarch64

How reproducible:

100%