[dpdk-stable] patch 'examples/performance-thread: fix out-of-bounds sched array' has been queued to LTS release 16.11.4
luca.boccassi at gmail.com
luca.boccassi at gmail.com
Mon Oct 30 16:35:10 CET 2017
Hi,
FYI, your patch has been queued to LTS release 16.11.4
Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 11/01/17. So please
shout if anyone has objections.
Thanks.
Kind regards,
Luca Boccassi
---
>From 21e77ae83e5939c5f95fcdd464833b1e3896d93a Mon Sep 17 00:00:00 2001
From: Slawomir Mrozowicz <slawomirx.mrozowicz at intel.com>
Date: Wed, 20 Sep 2017 09:47:34 +0200
Subject: [PATCH] examples/performance-thread: fix out-of-bounds sched array
[ upstream commit 72481c87ec80542cabf65fa8ad32ac381ee5ce4e ]
Overrunning array schedcore of 128 8-byte elements at element index 128
using index core id.
Fixed by correct check index lcoreid condition and
change type of lcoreid to unsigned.
Coverity issue: 143459, 143461
Fixes: 116819b9ed0d ("examples/performance-thread: add lthread subsystem")
Signed-off-by: Slawomir Mrozowicz <slawomirx.mrozowicz at intel.com>
Acked-by: Michal Jastrzebski <michalx.k.jastrzebski at intel.com>
---
examples/performance-thread/common/lthread.h | 2 +-
examples/performance-thread/common/lthread_sched.c | 14 ++++++++------
2 files changed, 9 insertions(+), 7 deletions(-)
diff --git a/examples/performance-thread/common/lthread.h b/examples/performance-thread/common/lthread.h
index 8c77af82e..01843ba5a 100644
--- a/examples/performance-thread/common/lthread.h
+++ b/examples/performance-thread/common/lthread.h
@@ -83,7 +83,7 @@ int _lthread_desched_sleep(struct lthread *lt);
void _lthread_free(struct lthread *lt);
-struct lthread_sched *_lthread_sched_get(int lcore_id);
+struct lthread_sched *_lthread_sched_get(unsigned int lcore_id);
struct lthread_stack *_stack_alloc(void);
diff --git a/examples/performance-thread/common/lthread_sched.c b/examples/performance-thread/common/lthread_sched.c
index c64c21ffb..fbda112f4 100644
--- a/examples/performance-thread/common/lthread_sched.c
+++ b/examples/performance-thread/common/lthread_sched.c
@@ -562,11 +562,14 @@ void lthread_run(void)
* Return the scheduler for this lcore
*
*/
-struct lthread_sched *_lthread_sched_get(int lcore_id)
+struct lthread_sched *_lthread_sched_get(unsigned int lcore_id)
{
- if (lcore_id > LTHREAD_MAX_LCORES)
- return NULL;
- return schedcore[lcore_id];
+ struct lthread_sched *res = NULL;
+
+ if (lcore_id < LTHREAD_MAX_LCORES)
+ res = schedcore[lcore_id];
+
+ return res;
}
/*
@@ -578,10 +581,9 @@ int lthread_set_affinity(unsigned lcoreid)
struct lthread *lt = THIS_LTHREAD;
struct lthread_sched *dest_sched;
- if (unlikely(lcoreid > LTHREAD_MAX_LCORES))
+ if (unlikely(lcoreid >= LTHREAD_MAX_LCORES))
return POSIX_ERRNO(EINVAL);
-
DIAG_EVENT(lt, LT_DIAG_LTHREAD_AFFINITY, lcoreid, 0);
dest_sched = schedcore[lcoreid];
--
2.11.0
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