From fc54cb8d876ae7b2d1bd0cf8a4d0b96a76318a91 Mon Sep 17 00:00:00 2001 From: Li Qiong Date: Tue, 14 Jun 2022 15:10:59 +0800 Subject: [PATCH] libceph: check pointer before assigned to "c->rules[]" It should be better to check pointer firstly, then assign it to c->rules[]. Refine code a little bit. Signed-off-by: Li Qiong Reviewed-by: Ilya Dryomov Signed-off-by: Ilya Dryomov --- net/ceph/osdmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c index 2823bb3cff55..5283ee9be8c8 100644 --- a/net/ceph/osdmap.c +++ b/net/ceph/osdmap.c @@ -571,10 +571,10 @@ static struct crush_map *crush_decode(void *pbyval, void *end) goto bad; #endif r = kmalloc(struct_size(r, steps, yes), GFP_NOFS); - c->rules[i] = r; if (r == NULL) goto badmem; dout(" rule %d is at %p\n", i, r); + c->rules[i] = r; r->len = yes; ceph_decode_copy_safe(p, end, &r->mask, 4, bad); /* 4 u8's */ ceph_decode_need(p, end, r->len*3*sizeof(u32), bad);