From b3b33b0e43323af4fb697f4378218d3c268d02cd Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Tue, 24 Dec 2013 21:19:24 +0200 Subject: crush: pass weight vector size to map function Pass the size of the weight vector into crush_do_rule() to ensure that we don't access values past the end. This can happen if the caller misbehaves and passes a weight vector that is smaller than max_devices. Currently the monitor tries to prevent that from happening, but this will gracefully tolerate previous bad osdmaps that got into this state. It's also a bit more defensive. Reflects ceph.git commit 5922e2c2b8335b5e46c9504349c3a55b7434c01a. Signed-off-by: Ilya Dryomov Reviewed-by: Sage Weil --- net/ceph/osdmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/ceph/osdmap.c') diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c index dbd9a4792427..6477a68ddecb 100644 --- a/net/ceph/osdmap.c +++ b/net/ceph/osdmap.c @@ -1165,7 +1165,7 @@ static int *calc_pg_raw(struct ceph_osdmap *osdmap, struct ceph_pg pgid, } r = crush_do_rule(osdmap->crush, ruleno, pps, osds, min_t(int, pool->size, *num), - osdmap->osd_weight); + osdmap->osd_weight, osdmap->max_osd); if (r < 0) { pr_err("error %d from crush rule: pool %lld ruleset %d type %d" " size %d\n", r, pgid.pool, pool->crush_ruleset, -- cgit v1.2.3