From: Liang Zhen <liang.zhen@intel.com>
Date: Mon, 2 Feb 2015 02:52:10 +0000 (-0500)
Subject: staging/lustre/lnet: portal spreading rotor should be unsigned
X-Git-Tag: firefly_0821_release~176^2~2320^2~19
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=70c86ace9008f83f3b3b0dd995c60942e1057347;p=firefly-linux-kernel-4.4.55.git

staging/lustre/lnet: portal spreading rotor should be unsigned

Portal spreading rotor should be unsigned, otherwise lnet may get
negative CPT number and access invalid addresses.

Signed-off-by: Liang Zhen <liang.zhen@intel.com>
Reviewed-on: http://review.whamcloud.com/11936
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5639
Reviewed-by: Amir Shehata <amir.shehata@intel.com>
Reviewed-by: Isaac Huang <he.huang@intel.com>
Reviewed-by: Doug Oucharek <doug.s.oucharek@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/lustre/include/linux/lnet/lib-types.h b/drivers/staging/lustre/include/linux/lnet/lib-types.h
index ba1876f57d12..50537668f59d 100644
--- a/drivers/staging/lustre/include/linux/lnet/lib-types.h
+++ b/drivers/staging/lustre/include/linux/lnet/lib-types.h
@@ -622,7 +622,7 @@ typedef struct lnet_portal {
 	/* Match table for each CPT */
 	struct lnet_match_table	**ptl_mtables;
 	/* spread rotor of incoming "PUT" */
-	int			ptl_rotor;
+	unsigned int		ptl_rotor;
 	/* # active entries for this portal */
 	int		     ptl_mt_nmaps;
 	/* array of active entries' cpu-partition-id */
diff --git a/drivers/staging/lustre/lnet/lnet/lib-ptl.c b/drivers/staging/lustre/lnet/lnet/lib-ptl.c
index 19ed696344fe..3ba0da919b41 100644
--- a/drivers/staging/lustre/lnet/lnet/lib-ptl.c
+++ b/drivers/staging/lustre/lnet/lnet/lib-ptl.c
@@ -262,10 +262,10 @@ lnet_mt_of_match(struct lnet_match_info *info, struct lnet_msg *msg)
 {
 	struct lnet_match_table	*mtable;
 	struct lnet_portal	*ptl;
-	int			nmaps;
-	int			rotor;
-	int			routed;
-	int			cpt;
+	unsigned int		nmaps;
+	unsigned int		rotor;
+	unsigned int		cpt;
+	bool			routed;
 
 	/* NB: called w/o lock */
 	LASSERT(info->mi_portal < the_lnet.ln_nportals);