Commit b72e19b9 authored by Dan Carpenter's avatar Dan Carpenter Committed by Sage Weil
Browse files

libceph: potential NULL dereference in ceph_osdc_handle_map() 



There are two places where we read "nr_maps" if both of them are set to
zero then we would hit a NULL dereference here.

Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: default avatarSage Weil <sage@inktank.com>
parent 18741196

net/ceph/osd_client.c

+2 −0
Original line number Diff line number Diff line
@@ -1793,6 +1793,8 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 
		nr_maps--;

	}



	if (!osdc->osdmap)

		goto bad;

done:

	downgrade_write(&osdc->map_sem);

	ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch);