Merge tag 'v6.12-rc7' into __tmp-hansg-linux-tags_media_atomisp_6_13_1

Linux 6.12-rc7

* tag 'v6.12-rc7': (1909 commits)
  Linux 6.12-rc7
  filemap: Fix bounds checking in filemap_read()
  i2c: designware: do not hold SCL low when I2C_DYNAMIC_TAR_UPDATE is not set
  mailmap: add entry for Thorsten Blum
  ocfs2: remove entry once instead of null-ptr-dereference in ocfs2_xa_remove()
  signal: restore the override_rlimit logic
  fs/proc: fix compile warning about variable 'vmcore_mmap_ops'
  ucounts: fix counter leak in inc_rlimit_get_ucounts()
  selftests: hugetlb_dio: check for initial conditions to skip in the start
  mm: fix docs for the kernel parameter ``thp_anon=``
  mm/damon/core: avoid overflow in damon_feed_loop_next_input()
  mm/damon/core: handle zero schemes apply interval
  mm/damon/core: handle zero {aggregation,ops_update} intervals
  mm/mlock: set the correct prev on failure
  objpool: fix to make percpu slot allocation more robust
  mm/page_alloc: keep track of free highatomic
  bcachefs: Fix UAF in __promote_alloc() error path
  bcachefs: Change OPT_STR max to be 1 less than the size of choices array
  bcachefs: btree_cache.freeable list fixes
  bcachefs: check the invalid parameter for perf test
  ...

6 files changed, 52 insertions, 12 deletions

diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 2714c4ed928e..eecad65fec92 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -1498,8 +1498,29 @@ int tcf_action_init(struct net *net, struct tcf_proto *tp, struct nlattr *nla,
 			bool skip_sw = tc_skip_sw(fl_flags);
 			bool skip_hw = tc_skip_hw(fl_flags);
 
-			if (tc_act_bind(act->tcfa_flags))
+			if (tc_act_bind(act->tcfa_flags)) {
+				/* Action is created by classifier and is not
+				 * standalone. Check that the user did not set
+				 * any action flags different than the
+				 * classifier flags, and inherit the flags from
+				 * the classifier for the compatibility case
+				 * where no flags were specified at all.
+				 */
+				if ((tc_act_skip_sw(act->tcfa_flags) && !skip_sw) ||
+				    (tc_act_skip_hw(act->tcfa_flags) && !skip_hw)) {
+					NL_SET_ERR_MSG(extack,
+						       "Mismatch between action and filter offload flags");
+					err = -EINVAL;
+					goto err;
+				}
+				if (skip_sw)
+					act->tcfa_flags |= TCA_ACT_FLAGS_SKIP_SW;
+				if (skip_hw)
+					act->tcfa_flags |= TCA_ACT_FLAGS_SKIP_HW;
 				continue;
+			}
+
+			/* Action is standalone */
 			if (skip_sw != tc_act_skip_sw(act->tcfa_flags) ||
 			    skip_hw != tc_act_skip_hw(act->tcfa_flags)) {
 				NL_SET_ERR_MSG(extack,
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 17d97bbe890f..bbc778c233c8 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -1518,6 +1518,7 @@ int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q,
 	return 0;
 
 err_dev_insert:
+	tcf_block_offload_unbind(block, q, ei);
 err_block_offload_bind:
 	tcf_chain0_head_change_cb_del(block, ei);
 err_chain0_head_change_cb_add:
diff --git a/net/sched/em_cmp.c b/net/sched/em_cmp.c
index c90ad7ea26b4..64b637f18bc7 100644
--- a/net/sched/em_cmp.c
+++ b/net/sched/em_cmp.c
@@ -10,7 +10,7 @@
 #include <linux/kernel.h>
 #include <linux/skbuff.h>
 #include <linux/tc_ematch/tc_em_cmp.h>
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
 #include <net/pkt_cls.h>
 
 static inline int cmp_needs_transformation(struct tcf_em_cmp *cmp)
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 74afc210527d..a1d27bc039a3 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -593,7 +593,6 @@ out:
 		pkt_len = 1;
 	qdisc_skb_cb(skb)->pkt_len = pkt_len;
 }
-EXPORT_SYMBOL(__qdisc_calculate_pkt_len);
 
 void qdisc_warn_nonwc(const char *txt, struct Qdisc *qdisc)
 {
@@ -792,7 +791,7 @@ void qdisc_tree_reduce_backlog(struct Qdisc *sch, int n, int len)
 	drops = max_t(int, n, 0);
 	rcu_read_lock();
 	while ((parentid = sch->parent)) {
-		if (TC_H_MAJ(parentid) == TC_H_MAJ(TC_H_INGRESS))
+		if (parentid == TC_H_ROOT)
 			break;
 
 		if (sch->flags & TCQ_F_NOPARENT)
@@ -1201,6 +1200,12 @@ skip:
 			return -EINVAL;
 		}
 
+		if (new &&
+		    !(parent->flags & TCQ_F_MQROOT) &&
+		    rcu_access_pointer(new->stab)) {
+			NL_SET_ERR_MSG(extack, "STAB not supported on a non root");
+			return -EINVAL;
+		}
 		err = cops->graft(parent, cl, new, &old, extack);
 		if (err)
 			return err;
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 2af24547a82c..38ec18f73de4 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -512,9 +512,15 @@ static void dev_watchdog(struct timer_list *t)
 				struct netdev_queue *txq;
 
 				txq = netdev_get_tx_queue(dev, i);
-				trans_start = READ_ONCE(txq->trans_start);
 				if (!netif_xmit_stopped(txq))
 					continue;
+
+				/* Paired with WRITE_ONCE() + smp_mb...() in
+				 * netdev_tx_sent_queue() and netif_tx_stop_queue().
+				 */
+				smp_mb();
+				trans_start = READ_ONCE(txq->trans_start);
+
 				if (time_after(jiffies, trans_start + dev->watchdog_timeo)) {
 					timedout_ms = jiffies_to_msecs(jiffies - trans_start);
 					atomic_long_inc(&txq->trans_timeout);
diff --git a/net/sched/sch_taprio.c b/net/sched/sch_taprio.c
index 8498d0606b24..8623dc0bafc0 100644
--- a/net/sched/sch_taprio.c
+++ b/net/sched/sch_taprio.c
@@ -1965,7 +1965,8 @@ static int taprio_change(struct Qdisc *sch, struct nlattr *opt,
 
 		taprio_start_sched(sch, start, new_admin);
 
-		rcu_assign_pointer(q->admin_sched, new_admin);
+		admin = rcu_replace_pointer(q->admin_sched, new_admin,
+					    lockdep_rtnl_is_held());
 		if (admin)
 			call_rcu(&admin->rcu, taprio_free_sched_cb);
 
@@ -2373,9 +2374,6 @@ static int taprio_dump(struct Qdisc *sch, struct sk_buff *skb)
 	struct tc_mqprio_qopt opt = { 0 };
 	struct nlattr *nest, *sched_nest;
 
-	oper = rtnl_dereference(q->oper_sched);
-	admin = rtnl_dereference(q->admin_sched);
-
 	mqprio_qopt_reconstruct(dev, &opt);
 
 	nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
@@ -2396,18 +2394,23 @@ static int taprio_dump(struct Qdisc *sch, struct sk_buff *skb)
 	    nla_put_u32(skb, TCA_TAPRIO_ATTR_TXTIME_DELAY, q->txtime_delay))
 		goto options_error;
 
+	rcu_read_lock();
+
+	oper = rtnl_dereference(q->oper_sched);
+	admin = rtnl_dereference(q->admin_sched);
+
 	if (oper && taprio_dump_tc_entries(skb, q, oper))
-		goto options_error;
+		goto options_error_rcu;
 
 	if (oper && dump_schedule(skb, oper))
-		goto options_error;
+		goto options_error_rcu;
 
 	if (!admin)
 		goto done;
 
 	sched_nest = nla_nest_start_noflag(skb, TCA_TAPRIO_ATTR_ADMIN_SCHED);
 	if (!sched_nest)
-		goto options_error;
+		goto options_error_rcu;
 
 	if (dump_schedule(skb, admin))
 		goto admin_error;
@@ -2415,11 +2418,15 @@ static int taprio_dump(struct Qdisc *sch, struct sk_buff *skb)
 	nla_nest_end(skb, sched_nest);
 
 done:
+	rcu_read_unlock();
 	return nla_nest_end(skb, nest);
 
 admin_error:
 	nla_nest_cancel(skb, sched_nest);
 
+options_error_rcu:
+	rcu_read_unlock();
+
 options_error:
 	nla_nest_cancel(skb, nest);