From f04ed7d277e842af9934b71b529341d1ba31a9c1 Mon Sep 17 00:00:00 2001 From: MichelleJin Date: Mon, 27 Sep 2021 03:34:56 +0000 Subject: net: ipv6: check return value of rhashtable_init When rhashtable_init() fails, it returns -EINVAL. However, since error return value of rhashtable_init is not checked, it can cause use of uninitialized pointers. So, fix unhandled errors of rhashtable_init. Signed-off-by: MichelleJin Reviewed-by: David Ahern Signed-off-by: David S. Miller --- net/ipv6/ila/ila_xlat.c | 6 +++++- net/ipv6/seg6.c | 8 ++++++-- net/ipv6/seg6_hmac.c | 4 +--- 3 files changed, 12 insertions(+), 6 deletions(-) diff --git a/net/ipv6/ila/ila_xlat.c b/net/ipv6/ila/ila_xlat.c index a1ac0e3d8c60..47447f0241df 100644 --- a/net/ipv6/ila/ila_xlat.c +++ b/net/ipv6/ila/ila_xlat.c @@ -610,7 +610,11 @@ int ila_xlat_init_net(struct net *net) if (err) return err; - rhashtable_init(&ilan->xlat.rhash_table, &rht_params); + err = rhashtable_init(&ilan->xlat.rhash_table, &rht_params); + if (err) { + free_bucket_spinlocks(ilan->xlat.locks); + return err; + } return 0; } diff --git a/net/ipv6/seg6.c b/net/ipv6/seg6.c index e412817fba2f..65744f2d38da 100644 --- a/net/ipv6/seg6.c +++ b/net/ipv6/seg6.c @@ -374,7 +374,11 @@ static int __net_init seg6_net_init(struct net *net) net->ipv6.seg6_data = sdata; #ifdef CONFIG_IPV6_SEG6_HMAC - seg6_hmac_net_init(net); + if (seg6_hmac_net_init(net)) { + kfree(sdata); + kfree(rcu_dereference_raw(sdata->tun_src)); + return -ENOMEM; + }; #endif return 0; @@ -388,7 +392,7 @@ static void __net_exit seg6_net_exit(struct net *net) seg6_hmac_net_exit(net); #endif - kfree(sdata->tun_src); + kfree(rcu_dereference_raw(sdata->tun_src)); kfree(sdata); } diff --git a/net/ipv6/seg6_hmac.c b/net/ipv6/seg6_hmac.c index 687d95dce085..29bc4e7c3046 100644 --- a/net/ipv6/seg6_hmac.c +++ b/net/ipv6/seg6_hmac.c @@ -405,9 +405,7 @@ int __net_init seg6_hmac_net_init(struct net *net) { struct seg6_pernet_data *sdata = seg6_pernet(net); - rhashtable_init(&sdata->hmac_infos, &rht_params); - - return 0; + return rhashtable_init(&sdata->hmac_infos, &rht_params); } EXPORT_SYMBOL(seg6_hmac_net_init); -- cgit 1.4.1