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

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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>
This commit is contained in:
Liang Zhen 2015-02-01 21:52:10 -05:00 committed by Greg Kroah-Hartman
parent dbab2d8563
commit 70c86ace90
2 changed files with 5 additions and 5 deletions
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2
drivers/staging/lustre/include/linux/lnet/lib-types.h
View file

@ -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 */

8
drivers/staging/lustre/lnet/lnet/lib-ptl.c
View file

@ -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);