diff options
| author | Ilya Dryomov <ilya.dryomov@inktank.com> | 2014-03-13 15:36:14 +0100 |
|---|---|---|
| committer | Sage Weil <sage@inktank.com> | 2014-04-05 06:07:41 +0200 |
| commit | 2d88b2e0819e0401ebb195e9fa20fab4be1965c8 (patch) | |
| tree | 2158da23ebd745e0b58f477ca1400f1934da27c6 /net/ceph | |
| parent | libceph: safely decode max_osd value in osdmap_decode() (diff) | |
| download | linux-2d88b2e0819e0401ebb195e9fa20fab4be1965c8.tar.xz linux-2d88b2e0819e0401ebb195e9fa20fab4be1965c8.zip | |
libceph: check length of osdmap osd arrays
Check length of osd_state, osd_weight and osd_addr arrays. They
should all have exactly max_osd elements after the call to
osdmap_set_max_osd().
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Diffstat (limited to 'net/ceph')
| -rw-r--r-- | net/ceph/osdmap.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c index ec06010657b3..c39ac624ccc3 100644 --- a/net/ceph/osdmap.c +++ b/net/ceph/osdmap.c @@ -745,19 +745,25 @@ static int osdmap_decode(void **p, void *end, struct ceph_osdmap *map) if (err) goto bad; - /* osds */ + /* osd_state, osd_weight, osd_addrs->client_addr */ ceph_decode_need(p, end, 3*sizeof(u32) + map->max_osd*(1 + sizeof(*map->osd_weight) + sizeof(*map->osd_addr)), e_inval); - *p += 4; /* skip length field (should match max) */ + if (ceph_decode_32(p) != map->max_osd) + goto e_inval; + ceph_decode_copy(p, map->osd_state, map->max_osd); - *p += 4; /* skip length field (should match max) */ + if (ceph_decode_32(p) != map->max_osd) + goto e_inval; + for (i = 0; i < map->max_osd; i++) map->osd_weight[i] = ceph_decode_32(p); - *p += 4; /* skip length field (should match max) */ + if (ceph_decode_32(p) != map->max_osd) + goto e_inval; + ceph_decode_copy(p, map->osd_addr, map->max_osd*sizeof(*map->osd_addr)); for (i = 0; i < map->max_osd; i++) ceph_decode_addr(&map->osd_addr[i]); |