[Qemu-devel] [PATCH 1/3] log: Plug memory leak on multiple -dfilter

[Markus Armbruster <armbru@redhat.com>]

-dfilter overwrites any previous filter.  The overwritten filter is
leaked.  Leaks since the beginning (commit 3514552, v2.6.0).  Free it
properly.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 util/log.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/util/log.c b/util/log.c
index 5ad72c1..6f45e0a 100644
--- a/util/log.c
+++ b/util/log.c
@@ -145,9 +145,16 @@ bool qemu_log_in_addr_range(uint64_t addr)
 void qemu_set_dfilter_ranges(const char *filter_spec)
 {
     gchar **ranges = g_strsplit(filter_spec, ",", 0);
+
+    if (debug_regions) {
+        g_array_unref(debug_regions);
+        debug_regions = NULL;
+    }
+
     if (ranges) {
         gchar **next = ranges;
         gchar *r = *next++;
+
         debug_regions = g_array_sized_new(FALSE, FALSE,
                                           sizeof(Range), g_strv_length(ranges));
         while (r) {
-- 
2.5.5