Merge branch 'linus' into locking/core, to resolve conflicts

Conflicts:
	include/linux/compiler-clang.h
	include/linux/compiler-gcc.h
	include/linux/compiler-intel.h
	include/uapi/linux/stddef.h

Signed-off-by: Ingo Molnar <mingo@kernel.org>

8 files changed, 76 insertions, 32 deletions

diff --git a/net/sctp/Makefile b/net/sctp/Makefile
index 70f1b570bab9..8c434af3e68f 100644
--- a/net/sctp/Makefile
+++ b/net/sctp/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for SCTP support code.
 #
diff --git a/net/sctp/input.c b/net/sctp/input.c
index 34f10e75f3b9..621b5ca3fd1c 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -794,7 +794,7 @@ hit:
 struct sctp_hash_cmp_arg {
         const union sctp_addr   *paddr;
         const struct net        *net;
-        u16                     lport;
+        __be16                  lport;
 };
 
 static inline int sctp_hash_cmp(struct rhashtable_compare_arg *arg,
@@ -820,37 +820,37 @@ out:
         return err;
 }
 
-static inline u32 sctp_hash_obj(const void *data, u32 len, u32 seed)
+static inline __u32 sctp_hash_obj(const void *data, u32 len, u32 seed)
 {
         const struct sctp_transport *t = data;
         const union sctp_addr *paddr = &t->ipaddr;
         const struct net *net = sock_net(t->asoc->base.sk);
-        u16 lport = htons(t->asoc->base.bind_addr.port);
-        u32 addr;
+        __be16 lport = htons(t->asoc->base.bind_addr.port);
+        __u32 addr;
 
         if (paddr->sa.sa_family == AF_INET6)
                 addr = jhash(&paddr->v6.sin6_addr, 16, seed);
         else
-                addr = paddr->v4.sin_addr.s_addr;
+                addr = (__force __u32)paddr->v4.sin_addr.s_addr;
 
-        return  jhash_3words(addr, ((__u32)paddr->v4.sin_port) << 16 |
+        return  jhash_3words(addr, ((__force __u32)paddr->v4.sin_port) << 16 |
                              (__force __u32)lport, net_hash_mix(net), seed);
 }
 
-static inline u32 sctp_hash_key(const void *data, u32 len, u32 seed)
+static inline __u32 sctp_hash_key(const void *data, u32 len, u32 seed)
 {
         const struct sctp_hash_cmp_arg *x = data;
         const union sctp_addr *paddr = x->paddr;
         const struct net *net = x->net;
-        u16 lport = x->lport;
-        u32 addr;
+        __be16 lport = x->lport;
+        __u32 addr;
 
         if (paddr->sa.sa_family == AF_INET6)
                 addr = jhash(&paddr->v6.sin6_addr, 16, seed);
         else
-                addr = paddr->v4.sin_addr.s_addr;
+                addr = (__force __u32)paddr->v4.sin_addr.s_addr;
 
-        return  jhash_3words(addr, ((__u32)paddr->v4.sin_port) << 16 |
+        return  jhash_3words(addr, ((__force __u32)paddr->v4.sin_port) << 16 |
                              (__force __u32)lport, net_hash_mix(net), seed);
 }
 
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index 51c488769590..a6dfa86c0201 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -738,7 +738,7 @@ static int sctp_v6_skb_iif(const struct sk_buff *skb)
 /* Was this packet marked by Explicit Congestion Notification? */
 static int sctp_v6_is_ce(const struct sk_buff *skb)
 {
-        return *((__u32 *)(ipv6_hdr(skb))) & htonl(1 << 20);
+        return *((__u32 *)(ipv6_hdr(skb))) & (__force __u32)htonl(1 << 20);
 }
 
 /* Dump the v6 addr to the seq file. */
@@ -882,8 +882,10 @@ static int sctp_inet6_bind_verify(struct sctp_sock *opt, union sctp_addr *addr)
                         net = sock_net(&opt->inet.sk);
                         rcu_read_lock();
                         dev = dev_get_by_index_rcu(net, addr->v6.sin6_scope_id);
-                        if (!dev ||
-                            !ipv6_chk_addr(net, &addr->v6.sin6_addr, dev, 0)) {
+                        if (!dev || !(opt->inet.freebind ||
+                                      net->ipv6.sysctl.ip_nonlocal_bind ||
+                                      ipv6_chk_addr(net, &addr->v6.sin6_addr,
+                                                    dev, 0))) {
                                 rcu_read_unlock();
                                 return 0;
                         }
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index ca8f196b6c6c..514465b03829 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -2854,7 +2854,7 @@ struct sctp_chunk *sctp_make_asconf_update_ip(struct sctp_association *asoc,
                 addr_param_len = af->to_addr_param(addr, &addr_param);
                 param.param_hdr.type = flags;
                 param.param_hdr.length = htons(paramlen + addr_param_len);
-                param.crr_id = i;
+                param.crr_id = htonl(i);
 
                 sctp_addto_chunk(retval, paramlen, &param);
                 sctp_addto_chunk(retval, addr_param_len, &addr_param);
@@ -2867,7 +2867,7 @@ struct sctp_chunk *sctp_make_asconf_update_ip(struct sctp_association *asoc,
                 addr_param_len = af->to_addr_param(addr, &addr_param);
                 param.param_hdr.type = SCTP_PARAM_DEL_IP;
                 param.param_hdr.length = htons(paramlen + addr_param_len);
-                param.crr_id = i;
+                param.crr_id = htonl(i);
 
                 sctp_addto_chunk(retval, paramlen, &param);
                 sctp_addto_chunk(retval, addr_param_len, &addr_param);
@@ -3591,7 +3591,7 @@ static struct sctp_chunk *sctp_make_reconf(const struct sctp_association *asoc,
  */
 struct sctp_chunk *sctp_make_strreset_req(
                                         const struct sctp_association *asoc,
-                                        __u16 stream_num, __u16 *stream_list,
+                                        __u16 stream_num, __be16 *stream_list,
                                         bool out, bool in)
 {
         struct sctp_strreset_outreq outreq;
@@ -3788,7 +3788,8 @@ bool sctp_verify_reconf(const struct sctp_association *asoc,
 {
         struct sctp_reconf_chunk *hdr;
         union sctp_params param;
-        __u16 last = 0, cnt = 0;
+        __be16 last = 0;
+        __u16 cnt = 0;
 
         hdr = (struct sctp_reconf_chunk *)chunk->chunk_hdr;
         sctp_walk_params(param, hdr, params) {
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index e6a2974e020e..e2d9a4b49c9c 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -1607,12 +1607,12 @@ static int sctp_cmd_interpreter(enum sctp_event event_type,
                         break;
 
                 case SCTP_CMD_INIT_FAILED:
-                        sctp_cmd_init_failed(commands, asoc, cmd->obj.err);
+                        sctp_cmd_init_failed(commands, asoc, cmd->obj.u32);
                         break;
 
                 case SCTP_CMD_ASSOC_FAILED:
                         sctp_cmd_assoc_failed(commands, asoc, event_type,
-                                              subtype, chunk, cmd->obj.err);
+                                              subtype, chunk, cmd->obj.u32);
                         break;
 
                 case SCTP_CMD_INIT_COUNTER_INC:
@@ -1680,8 +1680,8 @@ static int sctp_cmd_interpreter(enum sctp_event event_type,
                 case SCTP_CMD_PROCESS_CTSN:
                         /* Dummy up a SACK for processing. */
                         sackh.cum_tsn_ack = cmd->obj.be32;
-                        sackh.a_rwnd = asoc->peer.rwnd +
-                                        asoc->outqueue.outstanding_bytes;
+                        sackh.a_rwnd = htonl(asoc->peer.rwnd +
+                                             asoc->outqueue.outstanding_bytes);
                         sackh.num_gap_ack_blocks = 0;
                         sackh.num_dup_tsns = 0;
                         chunk->subh.sack_hdr = &sackh;
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 17841ab30798..6f45d1713452 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -170,6 +170,36 @@ static inline void sctp_set_owner_w(struct sctp_chunk *chunk)
         sk_mem_charge(sk, chunk->skb->truesize);
 }
 
+static void sctp_clear_owner_w(struct sctp_chunk *chunk)
+{
+        skb_orphan(chunk->skb);
+}
+
+static void sctp_for_each_tx_datachunk(struct sctp_association *asoc,
+                                       void (*cb)(struct sctp_chunk *))
+
+{
+        struct sctp_outq *q = &asoc->outqueue;
+        struct sctp_transport *t;
+        struct sctp_chunk *chunk;
+
+        list_for_each_entry(t, &asoc->peer.transport_addr_list, transports)
+                list_for_each_entry(chunk, &t->transmitted, transmitted_list)
+                        cb(chunk);
+
+        list_for_each_entry(chunk, &q->retransmit, list)
+                cb(chunk);
+
+        list_for_each_entry(chunk, &q->sacked, list)
+                cb(chunk);
+
+        list_for_each_entry(chunk, &q->abandoned, list)
+                cb(chunk);
+
+        list_for_each_entry(chunk, &q->out_chunk_list, list)
+                cb(chunk);
+}
+
 /* Verify that this is a valid address. */
 static inline int sctp_verify_addr(struct sock *sk, union sctp_addr *addr,
                                    int len)
@@ -8212,7 +8242,9 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
          * paths won't try to lock it and then oldsk.
          */
         lock_sock_nested(newsk, SINGLE_DEPTH_NESTING);
+        sctp_for_each_tx_datachunk(assoc, sctp_clear_owner_w);
         sctp_assoc_migrate(assoc, newsk);
+        sctp_for_each_tx_datachunk(assoc, sctp_set_owner_w);
 
         /* If the association on the newsk is already closed before accept()
          * is called, set RCV_SHUTDOWN flag.
diff --git a/net/sctp/stream.c b/net/sctp/stream.c
index 63ea15503714..fa8371ff05c4 100644
--- a/net/sctp/stream.c
+++ b/net/sctp/stream.c
@@ -118,6 +118,7 @@ int sctp_send_reset_streams(struct sctp_association *asoc,
         __u16 i, str_nums, *str_list;
         struct sctp_chunk *chunk;
         int retval = -EINVAL;
+        __be16 *nstr_list;
         bool out, in;
 
         if (!asoc->peer.reconf_capable ||
@@ -148,13 +149,18 @@ int sctp_send_reset_streams(struct sctp_association *asoc,
                         if (str_list[i] >= stream->incnt)
                                 goto out;
 
+        nstr_list = kcalloc(str_nums, sizeof(__be16), GFP_KERNEL);
+        if (!nstr_list) {
+                retval = -ENOMEM;
+                goto out;
+        }
+
         for (i = 0; i < str_nums; i++)
-                str_list[i] = htons(str_list[i]);
+                nstr_list[i] = htons(str_list[i]);
 
-        chunk = sctp_make_strreset_req(asoc, str_nums, str_list, out, in);
+        chunk = sctp_make_strreset_req(asoc, str_nums, nstr_list, out, in);
 
-        for (i = 0; i < str_nums; i++)
-                str_list[i] = ntohs(str_list[i]);
+        kfree(nstr_list);
 
         if (!chunk) {
                 retval = -ENOMEM;
@@ -305,7 +311,7 @@ out:
 }
 
 static struct sctp_paramhdr *sctp_chunk_lookup_strreset_param(
-                        struct sctp_association *asoc, __u32 resp_seq,
+                        struct sctp_association *asoc, __be32 resp_seq,
                         __be16 type)
 {
         struct sctp_chunk *chunk = asoc->strreset_chunk;
@@ -345,8 +351,9 @@ struct sctp_chunk *sctp_process_strreset_outreq(
 {
         struct sctp_strreset_outreq *outreq = param.v;
         struct sctp_stream *stream = &asoc->stream;
-        __u16 i, nums, flags = 0, *str_p = NULL;
         __u32 result = SCTP_STRRESET_DENIED;
+        __u16 i, nums, flags = 0;
+        __be16 *str_p = NULL;
         __u32 request_seq;
 
         request_seq = ntohl(outreq->request_seq);
@@ -439,8 +446,9 @@ struct sctp_chunk *sctp_process_strreset_inreq(
         struct sctp_stream *stream = &asoc->stream;
         __u32 result = SCTP_STRRESET_DENIED;
         struct sctp_chunk *chunk = NULL;
-        __u16 i, nums, *str_p;
         __u32 request_seq;
+        __u16 i, nums;
+        __be16 *str_p;
 
         request_seq = ntohl(inreq->request_seq);
         if (TSN_lt(asoc->strreset_inseq, request_seq) ||
@@ -769,7 +777,7 @@ struct sctp_chunk *sctp_process_strreset_resp(
 
         if (req->type == SCTP_PARAM_RESET_OUT_REQUEST) {
                 struct sctp_strreset_outreq *outreq;
-                __u16 *str_p;
+                __be16 *str_p;
 
                 outreq = (struct sctp_strreset_outreq *)req;
                 str_p = outreq->list_of_streams;
@@ -794,7 +802,7 @@ struct sctp_chunk *sctp_process_strreset_resp(
                         nums, str_p, GFP_ATOMIC);
         } else if (req->type == SCTP_PARAM_RESET_IN_REQUEST) {
                 struct sctp_strreset_inreq *inreq;
-                __u16 *str_p;
+                __be16 *str_p;
 
                 /* if the result is performed, it's impossible for inreq */
                 if (result == SCTP_STRRESET_PERFORMED)
diff --git a/net/sctp/ulpevent.c b/net/sctp/ulpevent.c
index 67abc0194f30..5447228bf1a0 100644
--- a/net/sctp/ulpevent.c
+++ b/net/sctp/ulpevent.c
@@ -847,7 +847,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_sender_dry_event(
 
 struct sctp_ulpevent *sctp_ulpevent_make_stream_reset_event(
         const struct sctp_association *asoc, __u16 flags, __u16 stream_num,
-        __u16 *stream_list, gfp_t gfp)
+        __be16 *stream_list, gfp_t gfp)
 {
         struct sctp_stream_reset_event *sreset;
         struct sctp_ulpevent *event;