[PATCH v2] kdumpctl: Optimize _find_kernel_path_by_release regex string

[Lichen Liu]

Currently _find_kernel_path_by_release uses grubby and grep to
find the kernel path, if both the normal kernel and it's debug
varient exist, the grep will give more than one kernel strings.

```
kernel="/boot/vmlinuz-5.14.0-139.kpq0.el9.s390x+debug"
kernel="/boot/vmlinuz-5.14.0-139.kpq0.el9.s390x"
```

This will cause an error when installing debug kernel.

```
The param "/boot/vmlinuz-5.14.0-139.kpq0.el9.s390x+debug
/boot/vmlinuz-5.14.0-139.kpq0.el9.s390x" is incorrect
```

Fixes: 945cbbd ("add helper functions to get kernel path by kernel release and the
path of current running kernel")

Signed-off-by: Lichen Liu <lichliu(a)redhat.com&gt;
Reviewed-by: Philipp Rudo <prudo(a)redhat.com&gt;
---
 kdumpctl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kdumpctl b/kdumpctl
index 7caaae5..63c78b0 100755
--- a/kdumpctl
+++ b/kdumpctl
@@ -1353,7 +1353,7 @@ _filter_grubby_kernel_str()
 _find_kernel_path_by_release()
 {
 	local _release="$1" _grubby_kernel_str _kernel_path
-	_grubby_kernel_str=$(grubby --info ALL | grep "^kernel=.*$_release")
+	_grubby_kernel_str=$(grubby --info ALL | grep "^kernel=.*$_release\"$")
 	_kernel_path=$(_filter_grubby_kernel_str "$_grubby_kernel_str")
 	if [[ -z $_kernel_path ]]; then
 		derror "kernel $_release doesn't exist"
-- 
2.37.3