Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 7.2-rc4

Cross-merge BPF and other fixes after downstream PR.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>

15 files changed, 95 insertions, 37 deletions

diff --git a/include/linux/arm_ffa.h b/include/linux/arm_ffa.h
index 17eca3dfc59e..e71d83ee0aef 100644
--- a/include/linux/arm_ffa.h
+++ b/include/linux/arm_ffa.h
@@ -421,6 +421,13 @@ struct ffa_mem_region {
 #define FFA_EMAD_HAS_IMPDEF_FIELD(version)	((version) >= FFA_VERSION_1_2)
 #define FFA_MEM_REGION_HAS_EP_MEM_OFFSET(version) ((version) > FFA_VERSION_1_0)
 
+/* The layout changed from FFA_VERSION_1_0 and the region includes an
+ * ep_mem_offset.
+ */
+#define FFA_MEM_REGION_SZ(version)		(!FFA_MEM_REGION_HAS_EP_MEM_OFFSET((version)) ?\
+						 offsetof(struct ffa_mem_region, ep_mem_offset) :\
+						 sizeof(struct ffa_mem_region))
+
 static inline u32 ffa_emad_size_get(u32 ffa_version)
 {
 	u32 sz;
@@ -445,7 +452,7 @@ ffa_mem_desc_offset(struct ffa_mem_region *buf, int count, u32 ffa_version)
 	if (!FFA_MEM_REGION_HAS_EP_MEM_OFFSET(ffa_version))
 		offset += offsetof(struct ffa_mem_region, ep_mem_offset);
 	else
-		offset += sizeof(struct ffa_mem_region);
+		offset += buf->ep_mem_offset;
 
 	return offset;
 }
diff --git a/include/linux/btf.h b/include/linux/btf.h
index 240401d9b25b..c09b7994de4e 100644
--- a/include/linux/btf.h
+++ b/include/linux/btf.h
@@ -578,6 +578,7 @@ const char *btf_str_by_offset(const struct btf *btf, u32 offset);
 struct btf *btf_parse_vmlinux(void);
 struct btf *bpf_prog_get_target_btf(const struct bpf_prog *prog);
 u32 *btf_kfunc_flags(const struct btf *btf, u32 kfunc_btf_id, const struct bpf_prog *prog);
+int btf_kfunc_check_flag(const struct btf *btf, u32 kfunc_btf_id, u32 flag);
 bool btf_kfunc_is_allowed(const struct btf *btf, u32 kfunc_btf_id, const struct bpf_prog *prog);
 u32 *btf_kfunc_is_modify_return(const struct btf *btf, u32 kfunc_btf_id,
 				const struct bpf_prog *prog);
diff --git a/include/linux/can/dev/peak_canfd.h b/include/linux/can/dev/peak_canfd.h
index d3788a3d0942..056e0efa649f 100644
--- a/include/linux/can/dev/peak_canfd.h
+++ b/include/linux/can/dev/peak_canfd.h
@@ -3,7 +3,7 @@
  * CAN driver for PEAK System micro-CAN based adapters
  *
  * Copyright (C) 2003-2025 PEAK System-Technik GmbH
- * Author: Stéphane Grosjean <stephane.grosjean@hms-networks.com>
+ * Author: Stéphane Grosjean <s.grosjean@peak-system.fr>
  */
 #ifndef PUCAN_H
 #define PUCAN_H
diff --git a/include/linux/damon.h b/include/linux/damon.h
index 6f7edb3590ef..02ac34537df9 100644
--- a/include/linux/damon.h
+++ b/include/linux/damon.h
@@ -843,11 +843,13 @@ struct damon_attrs {
  * including damon_call() and damos_walk().
  *
  * @ops:	Set of monitoring operations for given use cases.
+ * @probes:	Head of probes (&damon_probe) list.
  * @addr_unit:	Scale factor for core to ops address conversion.
  * @min_region_sz:	Minimum region size.
  * @pause:	Pause kdamond main loop.
  * @adaptive_targets:	Head of monitoring targets (&damon_target) list.
  * @schemes:		Head of schemes (&damos) list.
+ * @rnd_state:	Per-ctx PRNG state for damon_rand().
  */
 struct damon_ctx {
 	struct damon_attrs attrs;
@@ -905,7 +907,6 @@ struct damon_ctx {
 	struct list_head adaptive_targets;
 	struct list_head schemes;
 
-	/* Per-ctx PRNG state for damon_rand(); kdamond is the sole consumer. */
 	struct rnd_state rnd_state;
 };
 
@@ -1065,9 +1066,13 @@ static inline bool damon_target_has_pid(const struct damon_ctx *ctx)
 
 static inline unsigned int damon_max_nr_accesses(const struct damon_attrs *attrs)
 {
-	/* {aggr,sample}_interval are unsigned long, hence could overflow */
-	return min(attrs->aggr_interval / attrs->sample_interval,
+	unsigned long sample_interval;
+	unsigned long max_nr_accesses;
+
+	sample_interval = attrs->sample_interval ? : 1;
+	max_nr_accesses = min(attrs->aggr_interval / sample_interval,
 			(unsigned long)UINT_MAX);
+	return max_nr_accesses ? : 1;
 }
 
 
diff --git a/include/linux/fs.h b/include/linux/fs.h
index d10897b3a1e3..50ce731a2b78 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2444,6 +2444,11 @@ static inline struct mnt_idmap *file_mnt_idmap(const struct file *file)
 	return mnt_idmap(file->f_path.mnt);
 }
 
+static inline bool file_owner_or_capable(const struct file *file)
+{
+	return inode_owner_or_capable(file_mnt_idmap(file), file_inode(file));
+}
+
 /**
  * is_idmapped_mnt - check whether a mount is mapped
  * @mnt: the mount to check
diff --git a/include/linux/glob.h b/include/linux/glob.h
index 861327b33e41..91595e750936 100644
--- a/include/linux/glob.h
+++ b/include/linux/glob.h
@@ -6,5 +6,6 @@
 #include <linux/compiler.h>	/* For __pure */
 
 bool __pure glob_match(char const *pat, char const *str);
+bool __pure glob_match_len(char const *pat, char const *str, size_t len);
 
 #endif	/* _LINUX_GLOB_H */
diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h
index e71056553108..ab5cc8db3fbb 100644
--- a/include/linux/hid-sensor-hub.h
+++ b/include/linux/hid-sensor-hub.h
@@ -43,6 +43,8 @@ struct hid_sensor_hub_attribute_info {
  * @attr_usage_id:	Usage Id of a field, e.g. X-axis for a gyro.
  * @raw_size:		Response size for a read request.
  * @raw_data:		Place holder for received response.
+ * @index:		Current write index into raw_data for multi-byte reads.
+ * @max_raw_size:	Total buffer size for multi-byte reads; 0 for single-value reads.
  */
 struct sensor_hub_pending {
 	bool status;
@@ -51,6 +53,8 @@ struct sensor_hub_pending {
 	u32 attr_usage_id;
 	int raw_size;
 	u8  *raw_data;
+	u32 index;
+	u32 max_raw_size;
 };
 
 /**
@@ -184,6 +188,27 @@ int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev,
 );
 
 /**
+ * sensor_hub_input_attr_read_values() - Synchronous multi-byte read request
+ * @hsdev:		Hub device instance.
+ * @usage_id:		Attribute usage id of parent physical device as per spec
+ * @attr_usage_id:	Attribute usage id as per spec
+ * @report_id:		Report id to look for
+ * @flag:		Synchronous or asynchronous read
+ * @buffer_size:	Size of the buffer in bytes
+ * @buffer:		Buffer to store the read data
+ *
+ * Issues a synchronous or asynchronous read request for an input attribute,
+ * accumulating data into the provided buffer until it is full.
+ * Return: 0 on success, -ETIMEDOUT if the device did not respond, or a
+ * negative error code.
+ */
+int sensor_hub_input_attr_read_values(struct hid_sensor_hub_device *hsdev,
+				      u32 usage_id, u32 attr_usage_id,
+				      u32 report_id,
+				      enum sensor_hub_read_flags flag,
+				      u32 buffer_size, u8 *buffer);
+
+/**
 * sensor_hub_set_feature() - Feature set request
 * @hsdev:	Hub device instance.
 * @report_id:	Report id to look for
diff --git a/include/linux/ieee80211-eht.h b/include/linux/ieee80211-eht.h
index 18f9c662cf4c..c109722b1969 100644
--- a/include/linux/ieee80211-eht.h
+++ b/include/linux/ieee80211-eht.h
@@ -857,7 +857,7 @@ static inline bool ieee80211_mle_size_ok(const u8 *data, size_t len)
 	const struct ieee80211_multi_link_elem *mle = (const void *)data;
 	u8 fixed = sizeof(*mle);
 	u8 common = 0;
-	bool check_common_len = false;
+	u8 common_len;
 	u16 control;
 
 	if (!data || len < fixed)
@@ -868,7 +868,6 @@ static inline bool ieee80211_mle_size_ok(const u8 *data, size_t len)
 	switch (u16_get_bits(control, IEEE80211_ML_CONTROL_TYPE)) {
 	case IEEE80211_ML_CONTROL_TYPE_BASIC:
 		common += sizeof(struct ieee80211_mle_basic_common_info);
-		check_common_len = true;
 		if (control & IEEE80211_MLC_BASIC_PRES_LINK_ID)
 			common += 1;
 		if (control & IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT)
@@ -888,9 +887,9 @@ static inline bool ieee80211_mle_size_ok(const u8 *data, size_t len)
 		common += sizeof(struct ieee80211_mle_preq_common_info);
 		if (control & IEEE80211_MLC_PREQ_PRES_MLD_ID)
 			common += 1;
-		check_common_len = true;
 		break;
 	case IEEE80211_ML_CONTROL_TYPE_RECONF:
+		common += 1;
 		if (control & IEEE80211_MLC_RECONF_PRES_MLD_MAC_ADDR)
 			common += ETH_ALEN;
 		if (control & IEEE80211_MLC_RECONF_PRES_EML_CAPA)
@@ -902,7 +901,6 @@ static inline bool ieee80211_mle_size_ok(const u8 *data, size_t len)
 		break;
 	case IEEE80211_ML_CONTROL_TYPE_TDLS:
 		common += sizeof(struct ieee80211_mle_tdls_common_info);
-		check_common_len = true;
 		break;
 	case IEEE80211_ML_CONTROL_TYPE_PRIO_ACCESS:
 		common = ETH_ALEN + 1;
@@ -915,11 +913,9 @@ static inline bool ieee80211_mle_size_ok(const u8 *data, size_t len)
 	if (len < fixed + common)
 		return false;
 
-	if (!check_common_len)
-		return true;
+	common_len = mle->variable[0];
 
-	/* if present, common length is the first octet there */
-	return mle->variable[0] >= common;
+	return common_len >= common && common_len <= len - fixed;
 }
 
 /**
diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h
index dccbeb25f701..6032eea2539a 100644
--- a/include/linux/inetdevice.h
+++ b/include/linux/inetdevice.h
@@ -293,6 +293,11 @@ static inline void in_dev_put(struct in_device *idev)
 #define __in_dev_put(idev)  refcount_dec(&(idev)->refcnt)
 #define in_dev_hold(idev)   refcount_inc(&(idev)->refcnt)
 
+static inline bool in_dev_hold_safe(struct in_device *idev)
+{
+	return refcount_inc_not_zero(&idev->refcnt);
+}
+
 #endif /* __KERNEL__ */
 
 static __inline__ __be32 inet_make_mask(int logmask)
diff --git a/include/linux/iomap.h b/include/linux/iomap.h
index 3582ed1fe236..56b43d594e6e 100644
--- a/include/linux/iomap.h
+++ b/include/linux/iomap.h
@@ -622,6 +622,8 @@ extern struct bio_set iomap_ioend_bioset;
 #ifdef CONFIG_BLOCK
 int iomap_bio_read_folio_range(const struct iomap_iter *iter,
 		struct iomap_read_folio_ctx *ctx, size_t plen);
+void iomap_bio_submit_read_endio(const struct iomap_iter *iter,
+		struct iomap_read_folio_ctx *ctx, bio_end_io_t end_io);
 
 extern const struct iomap_read_ops iomap_bio_read_ops;
 
diff --git a/include/linux/netfs.h b/include/linux/netfs.h
index 243c0f737938..1bc120d61c5b 100644
--- a/include/linux/netfs.h
+++ b/include/linux/netfs.h
@@ -61,14 +61,16 @@ struct netfs_inode {
 #if IS_ENABLED(CONFIG_FSCACHE)
 	struct fscache_cookie	*cache;
 #endif
-	struct mutex		wb_lock;	/* Writeback serialisation */
+	struct list_head	wb_queue;	/* Queue of processes wanting to do writeback */
 	loff_t			_remote_i_size;	/* Size of the remote file */
 	loff_t			_zero_point;	/* Size after which we assume there's no data
 						 * on the server */
+	spinlock_t		lock;		/* Lock covering wb_queue */
 	atomic_t		io_count;	/* Number of outstanding reqs */
 	unsigned long		flags;
 #define NETFS_ICTX_ODIRECT	0		/* The file has DIO in progress */
 #define NETFS_ICTX_UNBUFFERED	1		/* I/O should not use the pagecache */
+#define NETFS_ICTX_WB_LOCK	2		/* Writeback serialisation lock */
 #define NETFS_ICTX_MODIFIED_ATTR 3		/* Indicate change in mtime/ctime */
 #define NETFS_ICTX_SINGLE_NO_UPLOAD 4		/* Monolithic payload, cache but no upload */
 };
@@ -462,6 +464,10 @@ int netfs_alloc_folioq_buffer(struct address_space *mapping,
 			      size_t *_cur_size, ssize_t size, gfp_t gfp);
 void netfs_free_folioq_buffer(struct folio_queue *fq);
 
+/* Writeback exclusion API. */
+bool netfs_wb_begin(struct netfs_inode *ictx, bool nowait);
+void netfs_wb_end(struct netfs_inode *ictx);
+
 /**
  * netfs_inode - Get the netfs inode context from the inode
  * @inode: The inode to query
@@ -743,7 +749,8 @@ static inline void netfs_inode_init(struct netfs_inode *ctx,
 #if IS_ENABLED(CONFIG_FSCACHE)
 	ctx->cache = NULL;
 #endif
-	mutex_init(&ctx->wb_lock);
+	INIT_LIST_HEAD(&ctx->wb_queue);
+	spin_lock_init(&ctx->lock);
 	/* ->releasepage() drives zero_point */
 	if (use_zero_point) {
 		ctx->_zero_point = ctx->_remote_i_size;
@@ -753,7 +760,7 @@ static inline void netfs_inode_init(struct netfs_inode *ctx,
 
 /**
  * netfs_resize_file - Note that a file got resized
- * @ctx: The netfs inode being resized
+ * @ictx: The netfs inode being resized
  * @new_i_size: The new file size
  * @changed_on_server: The change was applied to the server
  *
diff --git a/include/linux/page_ext.h b/include/linux/page_ext.h
index 61e876e255e8..f23d4b218da0 100644
--- a/include/linux/page_ext.h
+++ b/include/linux/page_ext.h
@@ -120,14 +120,18 @@ struct page_ext_iter {
  * page_ext_iter_begin() - Prepare for iterating through page extensions.
  * @iter: page extension iterator.
  * @pfn: PFN of the page we're interested in.
+ * @count: maximum number of page extensions to return.
  *
  * Must be called with RCU read lock taken.
  *
  * Return: NULL if no page_ext exists for this page.
  */
 static inline struct page_ext *page_ext_iter_begin(struct page_ext_iter *iter,
-						unsigned long pfn)
+		unsigned long pfn, unsigned long count)
 {
+	if (!count)
+		return NULL;
+
 	iter->index = 0;
 	iter->start_pfn = pfn;
 	iter->page_ext = page_ext_lookup(pfn);
@@ -138,19 +142,22 @@ static inline struct page_ext *page_ext_iter_begin(struct page_ext_iter *iter,
 /**
  * page_ext_iter_next() - Get next page extension
  * @iter: page extension iterator.
+ * @count: maximum number of page extensions to return.
  *
  * Must be called with RCU read lock taken.
  *
  * Return: NULL if no next page_ext exists.
  */
-static inline struct page_ext *page_ext_iter_next(struct page_ext_iter *iter)
+static inline struct page_ext *page_ext_iter_next(struct page_ext_iter *iter,
+		unsigned long count)
 {
 	unsigned long pfn;
 
 	if (WARN_ON_ONCE(!iter->page_ext))
 		return NULL;
 
-	iter->index++;
+	if (++iter->index >= count)
+		return NULL;
 	pfn = iter->start_pfn + iter->index;
 
 	if (page_ext_iter_next_fast_possible(pfn))
@@ -183,9 +190,9 @@ static inline struct page_ext *page_ext_iter_get(const struct page_ext_iter *ite
  * IMPORTANT: must be called with RCU read lock taken.
  */
 #define for_each_page_ext(__page, __pgcount, __page_ext, __iter) \
-	for (__page_ext = page_ext_iter_begin(&__iter, page_to_pfn(__page));\
-		__page_ext && __iter.index < __pgcount;          \
-		__page_ext = page_ext_iter_next(&__iter))
+	for (__page_ext = page_ext_iter_begin(&__iter, page_to_pfn(__page), __pgcount); \
+		__page_ext; \
+		__page_ext = page_ext_iter_next(&__iter, __pgcount))
 
 #else /* !CONFIG_PAGE_EXTENSION */
 struct page_ext;
diff --git a/include/linux/skmsg.h b/include/linux/skmsg.h
index a8553401b1c9..d5e35f24738d 100644
--- a/include/linux/skmsg.h
+++ b/include/linux/skmsg.h
@@ -551,20 +551,6 @@ static inline void psock_progs_drop(struct sk_psock_progs *progs)
 	psock_set_prog(&progs->skb_verdict, NULL);
 }
 
-/* for tcp only, sk is locked */
-static inline ssize_t sk_psock_msg_inq(struct sock *sk)
-{
-	struct sk_psock *psock;
-	ssize_t inq = 0;
-
-	psock = sk_psock_get(sk);
-	if (likely(psock)) {
-		inq = sk_psock_get_msg_len_nolock(psock);
-		sk_psock_put(sk, psock);
-	}
-	return inq;
-}
-
 /* for udp only, sk is not locked */
 static inline ssize_t sk_msg_first_len(struct sock *sk)
 {
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index f8b406b0a1af..3c2b8c355ab3 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -190,6 +190,7 @@ int		rpc_switch_client_transport(struct rpc_clnt *,
 				const struct rpc_timeout *);
 
 void		rpc_shutdown_client(struct rpc_clnt *);
+void		rpc_hold_client(struct rpc_clnt *);
 void		rpc_release_client(struct rpc_clnt *);
 void		rpc_task_release_transport(struct rpc_task *);
 void		rpc_task_release_client(struct rpc_task *);
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 4a0c36f40fe2..e0d838c9ce93 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -292,13 +292,18 @@ static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p)
 	{								\
 	}								\
 	static inline bool						\
+	__trace_##name##_enabled(void)					\
+	{								\
+		return static_branch_unlikely(&__tracepoint_##name.key);\
+	}								\
+	static inline bool						\
 	trace_##name##_enabled(void)					\
 	{								\
 		if (IS_ENABLED(CONFIG_LOCKDEP)) {			\
 			WARN_ONCE(!rcu_is_watching(),			\
 				  "RCU not watching for tracepoint");	\
 		}							\
-		return static_branch_unlikely(&__tracepoint_##name.key);\
+		return __trace_##name##_enabled();			\
 	}
 
 #define __DECLARE_TRACE(name, proto, args, cond, data_proto)			\
@@ -457,6 +462,11 @@ static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p)
 	{								\
 	}								\
 	static inline bool						\
+	__trace_##name##_enabled(void)					\
+	{								\
+		return false;						\
+	}								\
+	static inline bool						\
 	trace_##name##_enabled(void)					\
 	{								\
 		return false;						\