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dm-event: release buffer on dm_event_get_version

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Signed-off-by: wangzhiqiang <wangzhiqiang95@huawei.com>
(cherry picked from commit c660aa7ad815b568a7e75939501af1135375ec7a)
This commit is contained in:
wangzhiqiang 2023-12-19 10:49:09 +08:00 committed by openeuler-sync-bot
parent 0882c60967
commit 5f3022c5a3
2 changed files with 50 additions and 1 deletions
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45
0026-dm-event-release-buffer-on-dm_event_get_version.patch Normal file
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@ -0,0 +1,45 @@
From a203499ba32aabec0e8a9002517e1608e4e83b2c Mon Sep 17 00:00:00 2001
From: Zdenek Kabelac <zkabelac@redhat.com>
Date: Mon, 25 Sep 2023 11:47:40 +0200
Subject: [PATCH] dm-event: release buffer on dm_event_get_version
Avoid memory leak in this function.
---
daemons/dmeventd/libdevmapper-event.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/daemons/dmeventd/libdevmapper-event.c b/daemons/dmeventd/libdevmapper-event.c
index 9e4dd2469..0aabc03e6 100644
--- a/daemons/dmeventd/libdevmapper-event.c
+++ b/daemons/dmeventd/libdevmapper-event.c
@@ -844,6 +844,7 @@ int dm_event_get_registered_device(struct dm_event_handler *dmevh, int next)
int dm_event_get_version(struct dm_event_fifos *fifos, int *version) {
char *p;
struct dm_event_daemon_message msg = { 0 };
+ int ret = 0;
if (daemon_talk(fifos, &msg, DM_EVENT_CMD_HELLO, NULL, NULL, 0, 0))
return 0;
@@ -851,13 +852,17 @@ int dm_event_get_version(struct dm_event_fifos *fifos, int *version) {
*version = 0;
if (!p || !(p = strchr(p, ' '))) /* Message ID */
- return 0;
+ goto out;
if (!(p = strchr(p + 1, ' '))) /* HELLO */
- return 0;
+ goto out;
if ((p = strchr(p + 1, ' '))) /* HELLO, once more */
*version = atoi(p);
- return 1;
+ ret = 1;
+out:
+ free(msg.data);
+
+ return ret;
}
void dm_event_log_set(int debug_log_level, int use_syslog)
--
2.39.3

6
lvm2.spec
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@ -43,7 +43,7 @@
Name: lvm2
Version: 2.03.09
Release: 15
Release: 16
Epoch: 8
Summary: Tools for logical volume management
License: GPLv2+ and LGPLv2.1 and BSD
@ -74,6 +74,7 @@ Patch22: 0022-clang-remove-unused-assignment.patch
Patch23: 0023-udev-create-symlinks-and-watch-even-in-suspended-sta.patch
Patch24: 0024-udev-import-previous-results-of-blkid-when-in-suspen.patch
patch25: 0025-toollib-fix-segfault-if-using-S-select-with-log-repo.patch
Patch26: 0026-dm-event-release-buffer-on-dm_event_get_version.patch
BuildRequires: gcc
BuildRequires: gcc-c++
@ -499,6 +500,9 @@ fi
%changelog
* Tue Dec 19 2023 wangzhiqiang <wangzhiqiang95@huawei.com> - 8:2.03.09-16
- dm-event: release buffer on dm_event_get_version
* Thu Nov 30 2023 wuguanghao <wuguanghao3@huawei.com> - 8:2.03.09-15
- bakcport patch from community