diff --git a/Makefile b/Makefile
index 703ce528ac02..88cc9ee8c2c3 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 12
-SUBLEVEL = 22
+SUBLEVEL = 23
 EXTRAVERSION =
 NAME = Baby Opossum Posse
 
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 202397be76d8..d0040fb67c36 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -118,7 +118,7 @@ config ARM
 	select HAVE_KERNEL_XZ
 	select HAVE_KPROBES if !XIP_KERNEL && !CPU_ENDIAN_BE32 && !CPU_V7M
 	select HAVE_KRETPROBES if HAVE_KPROBES
-	select HAVE_LD_DEAD_CODE_DATA_ELIMINATION if (LD_VERSION >= 23600 || LD_IS_LLD)
+	select HAVE_LD_DEAD_CODE_DATA_ELIMINATION if (LD_VERSION >= 23600 || LD_CAN_USE_KEEP_IN_OVERLAY)
 	select HAVE_MOD_ARCH_SPECIFIC
 	select HAVE_NMI
 	select HAVE_OPTPROBES if !THUMB2_KERNEL
diff --git a/arch/arm/include/asm/vmlinux.lds.h b/arch/arm/include/asm/vmlinux.lds.h
index d60f6e83a9f7..0f8ef1ed725e 100644
--- a/arch/arm/include/asm/vmlinux.lds.h
+++ b/arch/arm/include/asm/vmlinux.lds.h
@@ -34,6 +34,12 @@
 #define NOCROSSREFS
 #endif
 
+#ifdef CONFIG_LD_CAN_USE_KEEP_IN_OVERLAY
+#define OVERLAY_KEEP(x)		KEEP(x)
+#else
+#define OVERLAY_KEEP(x)		x
+#endif
+
 /* Set start/end symbol names to the LMA for the section */
 #define ARM_LMA(sym, section)						\
 	sym##_start = LOADADDR(section);				\
diff --git a/arch/arm64/kernel/compat_alignment.c b/arch/arm64/kernel/compat_alignment.c
index deff21bfa680..b68e1d328d4c 100644
--- a/arch/arm64/kernel/compat_alignment.c
+++ b/arch/arm64/kernel/compat_alignment.c
@@ -368,6 +368,8 @@ int do_compat_alignment_fixup(unsigned long addr, struct pt_regs *regs)
 		return 1;
 	}
 
+	if (!handler)
+		return 1;
 	type = handler(addr, instr, regs);
 
 	if (type == TYPE_ERROR || type == TYPE_FAULT)
diff --git a/drivers/media/rc/streamzap.c b/drivers/media/rc/streamzap.c
index 9b209e687f25..2ce62fe5d60f 100644
--- a/drivers/media/rc/streamzap.c
+++ b/drivers/media/rc/streamzap.c
@@ -385,8 +385,8 @@ static void streamzap_disconnect(struct usb_interface *interface)
 	if (!sz)
 		return;
 
-	rc_unregister_device(sz->rdev);
 	usb_kill_urb(sz->urb_in);
+	rc_unregister_device(sz->rdev);
 	usb_free_urb(sz->urb_in);
 	usb_free_coherent(usbdev, sz->buf_in_len, sz->buf_in, sz->dma_in);
 
diff --git a/drivers/media/test-drivers/vimc/vimc-streamer.c b/drivers/media/test-drivers/vimc/vimc-streamer.c
index 807551a5143b..15d863f97cbf 100644
--- a/drivers/media/test-drivers/vimc/vimc-streamer.c
+++ b/drivers/media/test-drivers/vimc/vimc-streamer.c
@@ -59,6 +59,12 @@ static void vimc_streamer_pipeline_terminate(struct vimc_stream *stream)
 			continue;
 
 		sd = media_entity_to_v4l2_subdev(ved->ent);
+		/*
+		 * Do not call .s_stream() to stop an already
+		 * stopped/unstarted subdev.
+		 */
+		if (!v4l2_subdev_is_streaming(sd))
+			continue;
 		v4l2_subdev_call(sd, video, s_stream, 0);
 	}
 }
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
index e2dfd3670c4c..6a3629f71caa 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
@@ -805,6 +805,7 @@ int mt7921_mac_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 	msta->deflink.wcid.phy_idx = mvif->bss_conf.mt76.band_idx;
 	msta->deflink.wcid.tx_info |= MT_WCID_TX_INFO_SET;
 	msta->deflink.last_txs = jiffies;
+	msta->deflink.sta = msta;
 
 	ret = mt76_connac_pm_wake(&dev->mphy, &dev->pm);
 	if (ret)
diff --git a/drivers/platform/x86/amd/pmf/tee-if.c b/drivers/platform/x86/amd/pmf/tee-if.c
index 35495ef2c87d..09131507d7a9 100644
--- a/drivers/platform/x86/amd/pmf/tee-if.c
+++ b/drivers/platform/x86/amd/pmf/tee-if.c
@@ -510,18 +510,18 @@ int amd_pmf_init_smart_pc(struct amd_pmf_dev *dev)
 
 	ret = amd_pmf_set_dram_addr(dev, true);
 	if (ret)
-		goto error;
+		goto err_cancel_work;
 
 	dev->policy_base = devm_ioremap(dev->dev, dev->policy_addr, dev->policy_sz);
 	if (!dev->policy_base) {
 		ret = -ENOMEM;
-		goto error;
+		goto err_free_dram_buf;
 	}
 
 	dev->policy_buf = kzalloc(dev->policy_sz, GFP_KERNEL);
 	if (!dev->policy_buf) {
 		ret = -ENOMEM;
-		goto error;
+		goto err_free_dram_buf;
 	}
 
 	memcpy_fromio(dev->policy_buf, dev->policy_base, dev->policy_sz);
@@ -531,13 +531,13 @@ int amd_pmf_init_smart_pc(struct amd_pmf_dev *dev)
 	dev->prev_data = kzalloc(sizeof(*dev->prev_data), GFP_KERNEL);
 	if (!dev->prev_data) {
 		ret = -ENOMEM;
-		goto error;
+		goto err_free_policy;
 	}
 
 	for (i = 0; i < ARRAY_SIZE(amd_pmf_ta_uuid); i++) {
 		ret = amd_pmf_tee_init(dev, &amd_pmf_ta_uuid[i]);
 		if (ret)
-			return ret;
+			goto err_free_prev_data;
 
 		ret = amd_pmf_start_policy_engine(dev);
 		switch (ret) {
@@ -550,27 +550,41 @@ int amd_pmf_init_smart_pc(struct amd_pmf_dev *dev)
 			status = false;
 			break;
 		default:
-			goto error;
+			ret = -EINVAL;
+			amd_pmf_tee_deinit(dev);
+			goto err_free_prev_data;
 		}
 
 		if (status)
 			break;
 	}
 
-	if (!status && !pb_side_load)
-		goto error;
+	if (!status && !pb_side_load) {
+		ret = -EINVAL;
+		goto err_free_prev_data;
+	}
 
 	if (pb_side_load)
 		amd_pmf_open_pb(dev, dev->dbgfs_dir);
 
 	ret = amd_pmf_register_input_device(dev);
 	if (ret)
-		goto error;
+		goto err_pmf_remove_pb;
 
 	return 0;
 
-error:
-	amd_pmf_deinit_smart_pc(dev);
+err_pmf_remove_pb:
+	if (pb_side_load && dev->esbin)
+		amd_pmf_remove_pb(dev);
+	amd_pmf_tee_deinit(dev);
+err_free_prev_data:
+	kfree(dev->prev_data);
+err_free_policy:
+	kfree(dev->policy_buf);
+err_free_dram_buf:
+	kfree(dev->buf);
+err_cancel_work:
+	cancel_delayed_work_sync(&dev->pb_work);
 
 	return ret;
 }
diff --git a/fs/exec.c b/fs/exec.c
index 6f816396f4cf..131f5ac70eb9 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1249,13 +1249,12 @@ int begin_new_exec(struct linux_binprm * bprm)
 	 */
 	bprm->point_of_no_return = true;
 
-	/*
-	 * Make this the only thread in the thread group.
-	 */
+	/* Make this the only thread in the thread group */
 	retval = de_thread(me);
 	if (retval)
 		goto out;
-
+	/* see the comment in check_unsafe_exec() */
+	current->fs->in_exec = 0;
 	/*
 	 * Cancel any io_uring activity across execve
 	 */
@@ -1517,6 +1516,8 @@ static void free_bprm(struct linux_binprm *bprm)
 	}
 	free_arg_pages(bprm);
 	if (bprm->cred) {
+		/* in case exec fails before de_thread() succeeds */
+		current->fs->in_exec = 0;
 		mutex_unlock(&current->signal->cred_guard_mutex);
 		abort_creds(bprm->cred);
 	}
@@ -1623,6 +1624,10 @@ static void check_unsafe_exec(struct linux_binprm *bprm)
 	 * suid exec because the differently privileged task
 	 * will be able to manipulate the current directory, etc.
 	 * It would be nice to force an unshare instead...
+	 *
+	 * Otherwise we set fs->in_exec = 1 to deny clone(CLONE_FS)
+	 * from another sub-thread until de_thread() succeeds, this
+	 * state is protected by cred_guard_mutex we hold.
 	 */
 	n_fs = 1;
 	spin_lock(&p->fs->lock);
@@ -1881,7 +1886,6 @@ static int bprm_execve(struct linux_binprm *bprm)
 
 	sched_mm_cid_after_execve(current);
 	/* execve succeeded */
-	current->fs->in_exec = 0;
 	current->in_execve = 0;
 	rseq_execve(current);
 	user_events_execve(current);
@@ -1900,7 +1904,6 @@ out:
 		force_fatal_sig(SIGSEGV);
 
 	sched_mm_cid_after_execve(current);
-	current->fs->in_exec = 0;
 	current->in_execve = 0;
 
 	return retval;
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index ef6a3c8f3a9a..b278b5703c19 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -104,6 +104,9 @@ int __ext4_check_dir_entry(const char *function, unsigned int line,
 	else if (unlikely(le32_to_cpu(de->inode) >
 			le32_to_cpu(EXT4_SB(dir->i_sb)->s_es->s_inodes_count)))
 		error_msg = "inode out of bounds";
+	else if (unlikely(next_offset == size && de->name_len == 1 &&
+			  de->name[0] == '.'))
+		error_msg = "'.' directory cannot be the last in data block";
 	else
 		return 0;
 
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 219f4073a191..0d464a4b6802 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -6784,22 +6784,29 @@ static int ext4_statfs_project(struct super_block *sb,
 			     dquot->dq_dqb.dqb_bhardlimit);
 	limit >>= sb->s_blocksize_bits;
 
-	if (limit && buf->f_blocks > limit) {
+	if (limit) {
+		uint64_t	remaining = 0;
+
 		curblock = (dquot->dq_dqb.dqb_curspace +
 			    dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits;
-		buf->f_blocks = limit;
-		buf->f_bfree = buf->f_bavail =
-			(buf->f_blocks > curblock) ?
-			 (buf->f_blocks - curblock) : 0;
+		if (limit > curblock)
+			remaining = limit - curblock;
+
+		buf->f_blocks = min(buf->f_blocks, limit);
+		buf->f_bfree = min(buf->f_bfree, remaining);
+		buf->f_bavail = min(buf->f_bavail, remaining);
 	}
 
 	limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit,
 			     dquot->dq_dqb.dqb_ihardlimit);
-	if (limit && buf->f_files > limit) {
-		buf->f_files = limit;
-		buf->f_ffree =
-			(buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
-			 (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
+	if (limit) {
+		uint64_t	remaining = 0;
+
+		if (limit > dquot->dq_dqb.dqb_curinodes)
+			remaining = limit - dquot->dq_dqb.dqb_curinodes;
+
+		buf->f_files = min(buf->f_files, limit);
+		buf->f_ffree = min(buf->f_ffree, remaining);
 	}
 
 	spin_unlock(&dquot->dq_dqb_lock);
diff --git a/fs/jfs/jfs_dtree.c b/fs/jfs/jfs_dtree.c
index 8f85177f284b..93db6eec4465 100644
--- a/fs/jfs/jfs_dtree.c
+++ b/fs/jfs/jfs_dtree.c
@@ -117,7 +117,8 @@ do {									\
 	if (!(RC)) {							\
 		if (((P)->header.nextindex >				\
 		     (((BN) == 0) ? DTROOTMAXSLOT : (P)->header.maxslot)) || \
-		    ((BN) && ((P)->header.maxslot > DTPAGEMAXSLOT))) {	\
+		    ((BN) && (((P)->header.maxslot > DTPAGEMAXSLOT) ||	\
+		    ((P)->header.stblindex >= DTPAGEMAXSLOT)))) {	\
 			BT_PUTPAGE(MP);					\
 			jfs_error((IP)->i_sb,				\
 				  "DT_GETPAGE: dtree page corrupt\n");	\
diff --git a/fs/jfs/xattr.c b/fs/jfs/xattr.c
index 24afbae87225..11d7f74d207b 100644
--- a/fs/jfs/xattr.c
+++ b/fs/jfs/xattr.c
@@ -559,11 +559,16 @@ static int ea_get(struct inode *inode, struct ea_buffer *ea_buf, int min_size)
 
       size_check:
 	if (EALIST_SIZE(ea_buf->xattr) != ea_size) {
-		int size = clamp_t(int, ea_size, 0, EALIST_SIZE(ea_buf->xattr));
+		if (unlikely(EALIST_SIZE(ea_buf->xattr) > INT_MAX)) {
+			printk(KERN_ERR "ea_get: extended attribute size too large: %u > INT_MAX\n",
+			       EALIST_SIZE(ea_buf->xattr));
+		} else {
+			int size = clamp_t(int, ea_size, 0, EALIST_SIZE(ea_buf->xattr));
 
-		printk(KERN_ERR "ea_get: invalid extended attribute\n");
-		print_hex_dump(KERN_ERR, "", DUMP_PREFIX_ADDRESS, 16, 1,
-				     ea_buf->xattr, size, 1);
+			printk(KERN_ERR "ea_get: invalid extended attribute\n");
+			print_hex_dump(KERN_ERR, "", DUMP_PREFIX_ADDRESS, 16, 1,
+				       ea_buf->xattr, size, 1);
+		}
 		ea_release(inode, ea_buf);
 		rc = -EIO;
 		goto clean_up;
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 57f8818aa47c..5e81c819c384 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1057,6 +1057,12 @@ static struct nfs4_ol_stateid * nfs4_alloc_open_stateid(struct nfs4_client *clp)
 	return openlockstateid(stid);
 }
 
+/*
+ * As the sc_free callback of deleg, this may be called by nfs4_put_stid
+ * in nfsd_break_one_deleg.
+ * Considering nfsd_break_one_deleg is called with the flc->flc_lock held,
+ * this function mustn't ever sleep.
+ */
 static void nfs4_free_deleg(struct nfs4_stid *stid)
 {
 	struct nfs4_delegation *dp = delegstateid(stid);
@@ -5269,6 +5275,7 @@ static const struct nfsd4_callback_ops nfsd4_cb_recall_ops = {
 
 static void nfsd_break_one_deleg(struct nfs4_delegation *dp)
 {
+	bool queued;
 	/*
 	 * We're assuming the state code never drops its reference
 	 * without first removing the lease.  Since we're in this lease
@@ -5277,7 +5284,10 @@ static void nfsd_break_one_deleg(struct nfs4_delegation *dp)
 	 * we know it's safe to take a reference.
 	 */
 	refcount_inc(&dp->dl_stid.sc_count);
-	WARN_ON_ONCE(!nfsd4_run_cb(&dp->dl_recall));
+	queued = nfsd4_run_cb(&dp->dl_recall);
+	WARN_ON_ONCE(!queued);
+	if (!queued)
+		nfs4_put_stid(&dp->dl_stid);
 }
 
 /* Called from break_lease() with flc_lock held. */
@@ -6689,14 +6699,19 @@ deleg_reaper(struct nfsd_net *nn)
 	spin_lock(&nn->client_lock);
 	list_for_each_safe(pos, next, &nn->client_lru) {
 		clp = list_entry(pos, struct nfs4_client, cl_lru);
-		if (clp->cl_state != NFSD4_ACTIVE ||
-			list_empty(&clp->cl_delegations) ||
-			atomic_read(&clp->cl_delegs_in_recall) ||
-			test_bit(NFSD4_CLIENT_CB_RECALL_ANY, &clp->cl_flags) ||
-			(ktime_get_boottime_seconds() -
-				clp->cl_ra_time < 5)) {
+
+		if (clp->cl_state != NFSD4_ACTIVE)
+			continue;
+		if (list_empty(&clp->cl_delegations))
+			continue;
+		if (atomic_read(&clp->cl_delegs_in_recall))
+			continue;
+		if (test_bit(NFSD4_CLIENT_CB_RECALL_ANY, &clp->cl_flags))
+			continue;
+		if (ktime_get_boottime_seconds() - clp->cl_ra_time < 5)
+			continue;
+		if (clp->cl_cb_state != NFSD4_CB_UP)
 			continue;
-		}
 		list_add(&clp->cl_ra_cblist, &cblist);
 
 		/* release in nfsd4_cb_recall_any_release */
@@ -6880,7 +6895,7 @@ nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate,
 		 */
 		statusmask |= SC_STATUS_REVOKED;
 
-	statusmask |= SC_STATUS_ADMIN_REVOKED;
+	statusmask |= SC_STATUS_ADMIN_REVOKED | SC_STATUS_FREEABLE;
 
 	if (ZERO_STATEID(stateid) || ONE_STATEID(stateid) ||
 		CLOSE_STATEID(stateid))
@@ -7535,9 +7550,7 @@ nfsd4_delegreturn(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0)))
 		return status;
 
-	status = nfsd4_lookup_stateid(cstate, stateid, SC_TYPE_DELEG,
-				      SC_STATUS_REVOKED | SC_STATUS_FREEABLE,
-				      &s, nn);
+	status = nfsd4_lookup_stateid(cstate, stateid, SC_TYPE_DELEG, SC_STATUS_REVOKED, &s, nn);
 	if (status)
 		goto out;
 	dp = delegstateid(s);
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 3adbc05ebaac..e83629f39604 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -1959,6 +1959,7 @@ int nfsd_nl_listener_set_doit(struct sk_buff *skb, struct genl_info *info)
 	struct svc_serv *serv;
 	LIST_HEAD(permsocks);
 	struct nfsd_net *nn;
+	bool delete = false;
 	int err, rem;
 
 	mutex_lock(&nfsd_mutex);
@@ -2019,34 +2020,28 @@ int nfsd_nl_listener_set_doit(struct sk_buff *skb, struct genl_info *info)
 		}
 	}
 
-	/* For now, no removing old sockets while server is running */
-	if (serv->sv_nrthreads && !list_empty(&permsocks)) {
+	/*
+	 * If there are listener transports remaining on the permsocks list,
+	 * it means we were asked to remove a listener.
+	 */
+	if (!list_empty(&permsocks)) {
 		list_splice_init(&permsocks, &serv->sv_permsocks);
-		spin_unlock_bh(&serv->sv_lock);
+		delete = true;
+	}
+	spin_unlock_bh(&serv->sv_lock);
+
+	/* Do not remove listeners while there are active threads. */
+	if (serv->sv_nrthreads) {
 		err = -EBUSY;
 		goto out_unlock_mtx;
 	}
 
-	/* Close the remaining sockets on the permsocks list */
-	while (!list_empty(&permsocks)) {
-		xprt = list_first_entry(&permsocks, struct svc_xprt, xpt_list);
-		list_move(&xprt->xpt_list, &serv->sv_permsocks);
-
-		/*
-		 * Newly-created sockets are born with the BUSY bit set. Clear
-		 * it if there are no threads, since nothing can pick it up
-		 * in that case.
-		 */
-		if (!serv->sv_nrthreads)
-			clear_bit(XPT_BUSY, &xprt->xpt_flags);
-
-		set_bit(XPT_CLOSE, &xprt->xpt_flags);
-		spin_unlock_bh(&serv->sv_lock);
-		svc_xprt_close(xprt);
-		spin_lock_bh(&serv->sv_lock);
-	}
-
-	spin_unlock_bh(&serv->sv_lock);
+	/*
+	 * Since we can't delete an arbitrary llist entry, destroy the
+	 * remaining listeners and recreate the list.
+	 */
+	if (delete)
+		svc_xprt_destroy_all(serv, net);
 
 	/* walk list of addrs again, open any that still don't exist */
 	nlmsg_for_each_attr(attr, info->nlhdr, GENL_HDRLEN, rem) {
@@ -2073,6 +2068,9 @@ int nfsd_nl_listener_set_doit(struct sk_buff *skb, struct genl_info *info)
 
 		xprt = svc_find_listener(serv, xcl_name, net, sa);
 		if (xprt) {
+			if (delete)
+				WARN_ONCE(1, "Transport type=%s already exists\n",
+					  xcl_name);
 			svc_xprt_put(xprt);
 			continue;
 		}
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index d6d4f2a0e898..ca29a5e1600f 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1935,9 +1935,17 @@ out:
 	return err;
 }
 
-/*
- * Unlink a file or directory
- * N.B. After this call fhp needs an fh_put
+/**
+ * nfsd_unlink - remove a directory entry
+ * @rqstp: RPC transaction context
+ * @fhp: the file handle of the parent directory to be modified
+ * @type: enforced file type of the object to be removed
+ * @fname: the name of directory entry to be removed
+ * @flen: length of @fname in octets
+ *
+ * After this call fhp needs an fh_put.
+ *
+ * Returns a generic NFS status code in network byte-order.
  */
 __be32
 nfsd_unlink(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
@@ -2011,15 +2019,17 @@ out_drop_write:
 	fh_drop_write(fhp);
 out_nfserr:
 	if (host_err == -EBUSY) {
-		/* name is mounted-on. There is no perfect
-		 * error status.
+		/*
+		 * See RFC 8881 Section 18.25.4 para 4: NFSv4 REMOVE
+		 * wants a status unique to the object type.
 		 */
-		err = nfserr_file_open;
-	} else {
-		err = nfserrno(host_err);
+		if (type != S_IFDIR)
+			err = nfserr_file_open;
+		else
+			err = nfserr_acces;
 	}
 out:
-	return err;
+	return err != nfs_ok ? err : nfserrno(host_err);
 out_unlock:
 	inode_unlock(dirp);
 	goto out_drop_write;
diff --git a/init/Kconfig b/init/Kconfig
index fc29f5b146a2..01a416a06398 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -129,6 +129,11 @@ config CC_HAS_COUNTED_BY
 	# https://github.com/llvm/llvm-project/pull/112636
 	depends on !(CC_IS_CLANG && CLANG_VERSION < 190103)
 
+config LD_CAN_USE_KEEP_IN_OVERLAY
+	# ld.lld prior to 21.0.0 did not support KEEP within an overlay description
+	# https://github.com/llvm/llvm-project/pull/130661
+	def_bool LD_IS_BFD || LLD_VERSION >= 210000
+
 config PAHOLE_VERSION
 	int
 	default $(shell,$(srctree)/scripts/pahole-version.sh $(PAHOLE))
diff --git a/kernel/trace/trace_events_synth.c b/kernel/trace/trace_events_synth.c
index c82b401a294d..24c9962c40db 100644
--- a/kernel/trace/trace_events_synth.c
+++ b/kernel/trace/trace_events_synth.c
@@ -312,7 +312,7 @@ static const char *synth_field_fmt(char *type)
 	else if (strcmp(type, "gfp_t") == 0)
 		fmt = "%x";
 	else if (synth_field_is_string(type))
-		fmt = "%.*s";
+		fmt = "%s";
 	else if (synth_field_is_stack(type))
 		fmt = "%s";
 
@@ -859,6 +859,38 @@ static struct trace_event_fields synth_event_fields_array[] = {
 	{}
 };
 
+static int synth_event_reg(struct trace_event_call *call,
+		    enum trace_reg type, void *data)
+{
+	struct synth_event *event = container_of(call, struct synth_event, call);
+
+	switch (type) {
+#ifdef CONFIG_PERF_EVENTS
+	case TRACE_REG_PERF_REGISTER:
+#endif
+	case TRACE_REG_REGISTER:
+		if (!try_module_get(event->mod))
+			return -EBUSY;
+		break;
+	default:
+		break;
+	}
+
+	int ret = trace_event_reg(call, type, data);
+
+	switch (type) {
+#ifdef CONFIG_PERF_EVENTS
+	case TRACE_REG_PERF_UNREGISTER:
+#endif
+	case TRACE_REG_UNREGISTER:
+		module_put(event->mod);
+		break;
+	default:
+		break;
+	}
+	return ret;
+}
+
 static int register_synth_event(struct synth_event *event)
 {
 	struct trace_event_call *call = &event->call;
@@ -888,7 +920,7 @@ static int register_synth_event(struct synth_event *event)
 		goto out;
 	}
 	call->flags = TRACE_EVENT_FL_TRACEPOINT;
-	call->class->reg = trace_event_reg;
+	call->class->reg = synth_event_reg;
 	call->class->probe = trace_event_raw_event_synth;
 	call->data = event;
 	call->tp = event->tp;
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index ebb61ddca749..655246a9bec3 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -1353,6 +1353,7 @@ void graph_trace_close(struct trace_iterator *iter)
 	if (data) {
 		free_percpu(data->cpu_data);
 		kfree(data);
+		iter->private = NULL;
 	}
 }
 
diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c
index fce064e20570..10ea6d0a35e8 100644
--- a/kernel/trace/trace_irqsoff.c
+++ b/kernel/trace/trace_irqsoff.c
@@ -233,8 +233,6 @@ static void irqsoff_trace_open(struct trace_iterator *iter)
 {
 	if (is_graph(iter->tr))
 		graph_trace_open(iter);
-	else
-		iter->private = NULL;
 }
 
 static void irqsoff_trace_close(struct trace_iterator *iter)
diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c
index 032fdeba37d3..a94790f5cda7 100644
--- a/kernel/trace/trace_osnoise.c
+++ b/kernel/trace/trace_osnoise.c
@@ -2038,7 +2038,6 @@ static int start_kthread(unsigned int cpu)
 
 	if (IS_ERR(kthread)) {
 		pr_err(BANNER "could not start sampling thread\n");
-		stop_per_cpu_kthreads();
 		return -ENOMEM;
 	}
 
diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index ae2ace5e515a..039382576bc1 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -170,8 +170,6 @@ static void wakeup_trace_open(struct trace_iterator *iter)
 {
 	if (is_graph(iter->tr))
 		graph_trace_open(iter);
-	else
-		iter->private = NULL;
 }
 
 static void wakeup_trace_close(struct trace_iterator *iter)
diff --git a/mm/gup.c b/mm/gup.c
index 44c536904a83..d27e7c9e2596 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1283,6 +1283,9 @@ static int check_vma_flags(struct vm_area_struct *vma, unsigned long gup_flags)
 	if ((gup_flags & FOLL_LONGTERM) && vma_is_fsdax(vma))
 		return -EOPNOTSUPP;
 
+	if ((gup_flags & FOLL_SPLIT_PMD) && is_vm_hugetlb_page(vma))
+		return -EOPNOTSUPP;
+
 	if (vma_is_secretmem(vma))
 		return -EFAULT;
 
diff --git a/mm/zswap.c b/mm/zswap.c
index 7fefb2eb3fcd..00d51d013757 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -876,18 +876,32 @@ static int zswap_cpu_comp_dead(unsigned int cpu, struct hlist_node *node)
 {
 	struct zswap_pool *pool = hlist_entry(node, struct zswap_pool, node);
 	struct crypto_acomp_ctx *acomp_ctx = per_cpu_ptr(pool->acomp_ctx, cpu);
+	struct acomp_req *req;
+	struct crypto_acomp *acomp;
+	u8 *buffer;
+
+	if (IS_ERR_OR_NULL(acomp_ctx))
+		return 0;
 
 	mutex_lock(&acomp_ctx->mutex);
-	if (!IS_ERR_OR_NULL(acomp_ctx)) {
-		if (!IS_ERR_OR_NULL(acomp_ctx->req))
-			acomp_request_free(acomp_ctx->req);
-		acomp_ctx->req = NULL;
-		if (!IS_ERR_OR_NULL(acomp_ctx->acomp))
-			crypto_free_acomp(acomp_ctx->acomp);
-		kfree(acomp_ctx->buffer);
-	}
+	req = acomp_ctx->req;
+	acomp = acomp_ctx->acomp;
+	buffer = acomp_ctx->buffer;
+	acomp_ctx->req = NULL;
+	acomp_ctx->acomp = NULL;
+	acomp_ctx->buffer = NULL;
 	mutex_unlock(&acomp_ctx->mutex);
 
+	/*
+	 * Do the actual freeing after releasing the mutex to avoid subtle
+	 * locking dependencies causing deadlocks.
+	 */
+	if (!IS_ERR_OR_NULL(req))
+		acomp_request_free(req);
+	if (!IS_ERR_OR_NULL(acomp))
+		crypto_free_acomp(acomp);
+	kfree(buffer);
+
 	return 0;
 }