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https://github.com/Divested-Mobile/DivestOS-Build.git
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103 lines
3.8 KiB
Diff
103 lines
3.8 KiB
Diff
From d7a15270ad80aff21d09aaea9c0e98e03e541b50 Mon Sep 17 00:00:00 2001
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From: Min Chong <mchong@google.com>
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Date: Thu, 13 Oct 2016 17:15:35 -0700
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Subject: [PATCH] netfilter: Change %p to %pK in debug messages
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The format specifier %p can leak kernel addresses
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while not valuing the kptr_restrict system settings.
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Use %pK instead of %p, which also evaluates whether
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kptr_restrict is set.
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Bug: 31796940
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Change-Id: Ia2946d6b493126d68281f97778faf578247f088e
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Signed-off-by: Min Chong <mchong@google.com>
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---
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net/netfilter/nf_conntrack_core.c | 20 ++++++++++----------
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1 file changed, 10 insertions(+), 10 deletions(-)
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diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
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index 1c118edd4b794..d9b86c2e96e24 100644
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--- a/net/netfilter/nf_conntrack_core.c
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+++ b/net/netfilter/nf_conntrack_core.c
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@@ -188,7 +188,7 @@ EXPORT_SYMBOL_GPL(nf_ct_invert_tuple);
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static void
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clean_from_lists(struct nf_conn *ct)
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{
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- pr_debug("clean_from_lists(%p)\n", ct);
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+ pr_debug("clean_from_lists(%pK)\n", ct);
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hlist_nulls_del_rcu(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnnode);
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hlist_nulls_del_rcu(&ct->tuplehash[IP_CT_DIR_REPLY].hnnode);
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@@ -203,7 +203,7 @@ destroy_conntrack(struct nf_conntrack *nfct)
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struct net *net = nf_ct_net(ct);
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struct nf_conntrack_l4proto *l4proto;
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- pr_debug("destroy_conntrack(%p)\n", ct);
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+ pr_debug("destroy_conntrack(%pK)\n", ct);
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NF_CT_ASSERT(atomic_read(&nfct->use) == 0);
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NF_CT_ASSERT(!timer_pending(&ct->timeout));
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@@ -234,7 +234,7 @@ destroy_conntrack(struct nf_conntrack *nfct)
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if (ct->master)
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nf_ct_put(ct->master);
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- pr_debug("destroy_conntrack: returning ct=%p to slab\n", ct);
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+ pr_debug("destroy_conntrack: returning ct=%pK to slab\n", ct);
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nf_conntrack_free(ct);
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}
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@@ -496,7 +496,7 @@ __nf_conntrack_confirm(struct sk_buff *skb)
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/* No external references means no one else could have
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confirmed us. */
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NF_CT_ASSERT(!nf_ct_is_confirmed(ct));
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- pr_debug("Confirming conntrack %p\n", ct);
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+ pr_debug("Confirming conntrack %pK\n", ct);
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spin_lock_bh(&nf_conntrack_lock);
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@@ -826,7 +826,7 @@ init_conntrack(struct net *net, struct nf_conn *tmpl,
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spin_lock_bh(&nf_conntrack_lock);
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exp = nf_ct_find_expectation(net, zone, tuple);
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if (exp) {
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- pr_debug("conntrack: expectation arrives ct=%p exp=%p\n",
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+ pr_debug("conntrack: expectation arrives ct=%pK exp=%pK\n",
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ct, exp);
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/* Welcome, Mr. Bond. We've been expecting you... */
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__set_bit(IPS_EXPECTED_BIT, &ct->status);
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@@ -916,14 +916,14 @@ resolve_normal_ct(struct net *net, struct nf_conn *tmpl,
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} else {
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/* Once we've had two way comms, always ESTABLISHED. */
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if (test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) {
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- pr_debug("nf_conntrack_in: normal packet for %p\n", ct);
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+ pr_debug("nf_conntrack_in: normal packet for %pK\n", ct);
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*ctinfo = IP_CT_ESTABLISHED;
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} else if (test_bit(IPS_EXPECTED_BIT, &ct->status)) {
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- pr_debug("nf_conntrack_in: related packet for %p\n",
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+ pr_debug("nf_conntrack_in: related packet for %pK\n",
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ct);
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*ctinfo = IP_CT_RELATED;
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} else {
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- pr_debug("nf_conntrack_in: new packet for %p\n", ct);
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+ pr_debug("nf_conntrack_in: new packet for %pK\n", ct);
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*ctinfo = IP_CT_NEW;
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}
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*set_reply = 0;
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@@ -1065,7 +1065,7 @@ void nf_conntrack_alter_reply(struct nf_conn *ct,
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/* Should be unconfirmed, so not in hash table yet */
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NF_CT_ASSERT(!nf_ct_is_confirmed(ct));
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- pr_debug("Altering reply tuple of %p to ", ct);
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+ pr_debug("Altering reply tuple of %pK to ", ct);
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nf_ct_dump_tuple(newreply);
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ct->tuplehash[IP_CT_DIR_REPLY].tuple = *newreply;
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@@ -1640,7 +1640,7 @@ int nf_conntrack_init_net(struct net *net)
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goto err_stat;
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}
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- net->ct.slabname = kasprintf(GFP_KERNEL, "nf_conntrack_%p", net);
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+ net->ct.slabname = kasprintf(GFP_KERNEL, "nf_conntrack_%pK", net);
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if (!net->ct.slabname) {
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ret = -ENOMEM;
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goto err_slabname;
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