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Commit 7377324e authored by Chengguang Xu's avatar Chengguang Xu Committed by Ilya Dryomov
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libceph: fix misjudgement of maximum monitor number 



num_mon should allow up to CEPH_MAX_MON in ceph_monmap_decode().

Signed-off-by: default avatarChengguang Xu <cgxu519@icloud.com>
Reviewed-by: default avatarIlya Dryomov <idryomov@gmail.com>
Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
parent 11e1478d

net/ceph/mon_client.c

+1 −1
Original line number Diff line number Diff line
@@ -60,7 +60,7 @@ struct ceph_monmap *ceph_monmap_decode(void *p, void *end) 
	num_mon = ceph_decode_32(&p);

	ceph_decode_need(&p, end, num_mon*sizeof(m->mon_inst[0]), bad);



	if (num_mon >= CEPH_MAX_MON)

	if (num_mon > CEPH_MAX_MON)

		goto bad;

	m = kmalloc(sizeof(*m) + sizeof(m->mon_inst[0])*num_mon, GFP_NOFS);

	if (m == NULL)