From: Markus Metzger <markus.t.metzger@intel.com>
Date: Mon, 3 Jun 2013 12:32:15 +0000 (+0200)
Subject: btrace, linux: fix memory leak when reading branch trace
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ed9edfb5d5edb1dd0b6280ae4acdd9963a12ebe6;p=binutils-gdb.git

btrace, linux: fix memory leak when reading branch trace

When it takes more than one iteration to read the BTS trace, the trace from the
previous iteration is leaked.  Fix it.

2014-01-16  Markus Metzger  <markus.t.metzger@intel.com>

	* common/linux-btrace.c (linux_read_btrace): Free trace from
	previous iteration.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 0305e985c45..e1e6c744611 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2014-01-16  Markus Metzger  <markus.t.metzger@intel.com>
+
+	* common/linux-btrace.c (linux_read_btrace): Free trace from
+	previous iteration.
+
 2014-01-15  Doug Evans  <dje@google.com>
 
 	* dwarf2read.c (open_and_init_dwp_file): Use pulongest to print
diff --git a/gdb/common/linux-btrace.c b/gdb/common/linux-btrace.c
index ef240f707ef..0d36ea5c958 100644
--- a/gdb/common/linux-btrace.c
+++ b/gdb/common/linux-btrace.c
@@ -520,6 +520,9 @@ linux_read_btrace (struct btrace_target_info *tinfo,
     {
       data_head = header->data_head;
 
+      /* Delete any leftover trace from the previous iteration.  */
+      VEC_free (btrace_block_s, btrace);
+
       /* If there's new trace, let's read it.  */
       if (data_head != tinfo->data_head)
 	{