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Commit 3977058c authored by Ilya Dryomov's avatar Ilya Dryomov Committed by Sage Weil
Browse files

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: default avatarIlya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: default avatarAlex Elder <elder@linaro.org>
parent 597b52f6

net/ceph/osdmap.c

+4 −2
Original line number Diff line number Diff line
@@ -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);