File 0027-tools-kvm_stat-handle-invalid-regular-expressions.patch of Package kvm_stat

From 34f151004c143d186530fde6e71271891f773700 Mon Sep 17 00:00:00 2001
From: Stefan Raspl <stefan.raspl@de.ibm.com>
Date: Mon, 11 Dec 2017 12:25:25 +0100
Subject: [PATCH 27/43] tools/kvm_stat: handle invalid regular expressions

Passing an invalid regular expression on the command line results in a
traceback. Note that interactive specification of invalid regular
expressions is not affected
To reproduce, run "kvm_stat -f '*'".

Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 08e20a6300e106d5feb89c9e47ea479533fec46f)
[FL: FATE#325017]
Signed-off-by: Fei Li <fli@suse.com>
---
 tools/kvm/kvm_stat/kvm_stat | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tools/kvm/kvm_stat/kvm_stat b/tools/kvm/kvm_stat/kvm_stat
index f2711b0a04f5..c34a1c511e68 100755
--- a/tools/kvm/kvm_stat/kvm_stat
+++ b/tools/kvm/kvm_stat/kvm_stat
@@ -1524,6 +1524,13 @@ Press any other key to refresh statistics immediately.
                          callback=cb_guest_to_pid,
                          )
     (options, _) = optparser.parse_args(sys.argv)
+    try:
+        # verify that we were passed a valid regex up front
+        re.compile(options.fields)
+    except re.error:
+        sys.exit('Error: "' + options.fields + '" is not a valid regular '
+                 'expression')
+
     return options
 
 
-- 
2.12.3