The kzalloc mempool does not re-zero items that have been used and then
returned to the pool. Manually zero the allocated multipath_bh instead.
CC: linux-raid@xxxxxxxxxxxxxxx
CC: Neil Brown <neilb@xxxxxxx>
CC: <stable@xxxxxxxxxx>
Signed-off-by: Sage Weil <sage@xxxxxxxxxxxx>
---
drivers/md/multipath.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index 237fe3f..151ce69 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -150,6 +150,7 @@ static int multipath_make_request (struct request_queue *q, struct bio * bio)
}
mp_bh = mempool_alloc(conf->pool, GFP_NOIO);
+ memset(mp_bh, 0, sizeof(*mp_bh));
mp_bh->master_bio = bio;
mp_bh->mddev = mddev;
@@ -490,7 +491,7 @@ static int multipath_run (mddev_t *mddev)
}
mddev->degraded = conf->raid_disks - conf->working_disks;
- conf->pool = mempool_create_kzalloc_pool(NR_RESERVED_BUFS,
+ conf->pool = mempool_create_kmalloc_pool(NR_RESERVED_BUFS,
sizeof(struct multipath_bh));
if (conf->pool == NULL) {
printk(KERN_ERR
--
1.5.6.5
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