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authorDan Carpenter <dan.carpenter@oracle.com>2013-08-15 08:52:48 +0300
committerSage Weil <sage@inktank.com>2013-08-27 12:26:30 -0700
commitb72e19b9225d4297a18715b0998093d843d170fa (patch)
tree650d3bc5701027cfc118f0c81a1dae5f016c88bc /net/ceph/osd_client.c
parent1874119664dafda3ef2ed9b51b4759a9540d4a1a (diff)
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: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Sage Weil <sage@inktank.com>
Diffstat (limited to 'net/ceph/osd_client.c')
-rw-r--r--net/ceph/osd_client.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 3ee4a1da02cd..6a59fb8fc999 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -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);

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