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| author | Ilya Dryomov <ilya.dryomov@inktank.com> | 2014-03-13 16:36:14 +0200 |
|---|---|---|
| committer | Sage Weil <sage@inktank.com> | 2014-04-04 21:07:40 -0700 |
| commit | 3977058c468b872c6bc5e5273bf911d791848643 (patch) | |
| tree | 8d4d2f0c3e204724cad1295ac88ecb2e3d930a85 | |
| parent | 597b52f6ca247086371abd67e5083292a500e736 (diff) | |
| download | linux-3977058c468b872c6bc5e5273bf911d791848643.tar.gz | |
libceph: safely decode max_osd value in osdmap_decode()
max_osd value is not covered by any ceph_decode_need(). Use a safe version of ceph_decode_* macro to decode it. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| -rw-r--r-- | net/ceph/osdmap.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c index 298d076eee89..ec06010657b3 100644 --- a/net/ceph/osdmap.c +++ b/net/ceph/osdmap.c @@ -687,9 +687,10 @@ static int osdmap_set_max_osd(struct ceph_osdmap *map, int max) static int osdmap_decode(void **p, void *end, struct ceph_osdmap *map) { u16 version; - u32 len, max, i; u32 epoch = 0; void *start = *p; + u32 max; + u32 len, i; int err; struct ceph_pg_pool_info *pi; @@ -736,7 +737,8 @@ static int osdmap_decode(void **p, void *end, struct ceph_osdmap *map) ceph_decode_32_safe(p, end, map->flags, e_inval); - max = ceph_decode_32(p); + /* max_osd */ + ceph_decode_32_safe(p, end, max, e_inval); /* (re)alloc osd arrays */ err = osdmap_set_max_osd(map, max); |