From: "Benjamin Marzinski" <bmarzins@redhat.com>
To: device-mapper development <dm-devel@redhat.com>
Cc: Martin Wilck <mwilck@suse.com>
Subject: [PATCH v3 10/19] libmultipath: fix memory issue in path_latency prio
Date: Fri, 21 Sep 2018 18:05:18 -0500 [thread overview]
Message-ID: <1537571127-10143-11-git-send-email-bmarzins@redhat.com> (raw)
In-Reply-To: <1537571127-10143-1-git-send-email-bmarzins@redhat.com>
The path_latency prioriziter was assuming that prepare_directio_read()
always succeeds. However, it doesn't, and when it fails, the prioritizer
used buf without it pointing to alloced memory. Found by coverity.
Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
---
libmultipath/prioritizers/path_latency.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/libmultipath/prioritizers/path_latency.c b/libmultipath/prioritizers/path_latency.c
index 765265c..eeee01e 100644
--- a/libmultipath/prioritizers/path_latency.c
+++ b/libmultipath/prioritizers/path_latency.c
@@ -237,7 +237,8 @@ int getprio(struct path *pp, char *args, unsigned int timeout)
lg_maxavglatency = log(MAX_AVG_LATENCY) / lg_base;
lg_minavglatency = log(MIN_AVG_LATENCY) / lg_base;
- prepare_directio_read(pp->fd, &blksize, &buf, &restore_flags);
+ if (prepare_directio_read(pp->fd, &blksize, &buf, &restore_flags) < 0)
+ return PRIO_UNDEF;
temp = io_num;
while (temp-- > 0) {
--
2.7.4
next prev parent reply other threads:[~2018-09-21 23:05 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-21 23:05 [PATCH v3 00/19] Misc Multipath patches Benjamin Marzinski
2018-09-21 23:05 ` [PATCH v3 01/19] libmultipath: fix tur checker timeout Benjamin Marzinski
2018-10-01 19:51 ` Martin Wilck
2018-10-04 16:31 ` Benjamin Marzinski
2018-10-05 10:11 ` Martin Wilck
2018-10-05 17:02 ` Benjamin Marzinski
2018-10-05 19:23 ` Martin Wilck
2018-09-21 23:05 ` [PATCH v3 02/19] libmultipath: fix tur checker double locking Benjamin Marzinski
2018-10-01 20:09 ` Martin Wilck
2018-10-01 20:44 ` Martin Wilck
2018-10-04 16:47 ` Benjamin Marzinski
2018-10-04 16:45 ` Benjamin Marzinski
2018-10-05 10:25 ` Martin Wilck
2018-10-05 17:10 ` Benjamin Marzinski
2018-10-05 19:07 ` Martin Wilck
2018-09-21 23:05 ` [PATCH v3 03/19] libmultipath: fix tur memory misuse Benjamin Marzinski
2018-10-01 20:59 ` Martin Wilck
2018-10-02 7:48 ` Martin Wilck
2018-09-21 23:05 ` [PATCH v3 04/19] libmultipath: cleanup tur locking Benjamin Marzinski
2018-10-01 21:08 ` Martin Wilck
2018-09-21 23:05 ` [PATCH v3 05/19] libmultipath: fix tur checker timeout issue Benjamin Marzinski
2018-10-01 21:09 ` Martin Wilck
2018-09-21 23:05 ` [PATCH v3 06/19] libmultipath: fix set_int error path Benjamin Marzinski
2018-10-01 21:17 ` Martin Wilck
2018-09-21 23:05 ` [PATCH v3 07/19] libmultipath: fix length issues in get_vpd_sgio Benjamin Marzinski
2018-10-01 21:25 ` Martin Wilck
2018-09-21 23:05 ` [PATCH v3 08/19] libmultipath: _install_keyword cleanup Benjamin Marzinski
2018-10-01 21:26 ` Martin Wilck
2018-09-21 23:05 ` [PATCH v3 09/19] libmultipath: remove unused code Benjamin Marzinski
2018-10-01 21:28 ` Martin Wilck
2018-09-21 23:05 ` Benjamin Marzinski [this message]
2018-10-01 21:30 ` [PATCH v3 10/19] libmultipath: fix memory issue in path_latency prio Martin Wilck
2018-09-21 23:05 ` [PATCH v3 11/19] libmultipath: fix null dereference int alloc_path_group Benjamin Marzinski
2018-10-01 21:33 ` Martin Wilck
2018-09-21 23:05 ` [PATCH v3 12/19] libmutipath: don't use malformed uevents Benjamin Marzinski
2018-10-01 21:31 ` Martin Wilck
2018-09-21 23:05 ` [PATCH v3 13/19] multipath: fix max array size in print_cmd_valid Benjamin Marzinski
2018-10-01 21:35 ` Martin Wilck
2018-09-21 23:05 ` [PATCH v3 14/19] multipathd: function return value tweaks Benjamin Marzinski
2018-10-01 21:37 ` Martin Wilck
2018-09-21 23:05 ` [PATCH v3 15/19] multipathd: minor fixes Benjamin Marzinski
2018-10-01 21:38 ` Martin Wilck
2018-09-21 23:05 ` [PATCH v3 16/19] multipathd: remove useless check and fix format Benjamin Marzinski
2018-10-01 21:40 ` Martin Wilck
2018-09-21 23:05 ` [PATCH v3 17/19] multipathd: fix memory leak on error in configure Benjamin Marzinski
2018-10-01 21:42 ` Martin Wilck
2018-09-21 23:05 ` [PATCH v3 18/19] libmultipath: Don't blank intialized paths Benjamin Marzinski
2018-10-01 22:00 ` Martin Wilck
2018-10-02 22:37 ` Martin Wilck
2018-10-05 19:38 ` Benjamin Marzinski
2018-10-08 9:41 ` Martin Wilck
2018-10-09 22:20 ` Benjamin Marzinski
2018-10-08 9:35 ` Martin Wilck
2018-09-21 23:05 ` [PATCH v3 19/19] libmultipath: Fixup updating paths Benjamin Marzinski
2018-10-01 22:30 ` Martin Wilck
2018-10-05 20:32 ` Benjamin Marzinski
2018-10-07 8:36 ` [PATCH v3 00/19] Misc Multipath patches Christophe Varoqui
2018-10-09 16:13 ` Benjamin Marzinski
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