Merge tag 'vfs-6.16-rc5.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs fixes from Christian Brauner:

 - Fix a regression caused by the anonymous inode rework. Making them
   regular files causes various places in the kernel to tip over
   starting with io_uring.

   Revert to the former status quo and port our assertion to be based on
   checking the inode so we don't lose the valuable VFS_*_ON_*()
   assertions that have already helped discover weird behavior our
   outright bugs.

 - Fix the the upper bound calculation in fuse_fill_write_pages()

 - Fix priority inversion issues in the eventpoll code

 - Make secretmen use anon_inode_make_secure_inode() to avoid bypassing
   the LSM layer

 - Fix a netfs hang due to missing case in final DIO read result
   collection

 - Fix a double put of the netfs_io_request struct

 - Provide some helpers to abstract out NETFS_RREQ_IN_PROGRESS flag
   wrangling

 - Fix infinite looping in netfs_wait_for_pause/request()

 - Fix a netfs ref leak on an extra subrequest inserted into a request's
   list of subreqs

 - Fix various cifs RPC callbacks to set NETFS_SREQ_NEED_RETRY if a
   subrequest fails retriably

 - Fix a cifs warning in the workqueue code when reconnecting a channel

 - Fix the updating of i_size in netfs to avoid a race between testing
   if we should have extended the file with a DIO write and changing
   i_size

 - Merge the places in netfs that update i_size on write

 - Fix coredump socket selftests

* tag 'vfs-6.16-rc5.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  anon_inode: rework assertions
  netfs: Update tracepoints in a number of ways
  netfs: Renumber the NETFS_RREQ_* flags to make traces easier to read
  netfs: Merge i_size update functions
  netfs: Fix i_size updating
  smb: client: set missing retry flag in cifs_writev_callback()
  smb: client: set missing retry flag in cifs_readv_callback()
  smb: client: set missing retry flag in smb2_writev_callback()
  netfs: Fix ref leak on inserted extra subreq in write retry
  netfs: Fix looping in wait functions
  netfs: Provide helpers to perform NETFS_RREQ_IN_PROGRESS flag wangling
  netfs: Fix double put of request
  netfs: Fix hang due to missing case in final DIO read result collection
  eventpoll: Fix priority inversion problem
  fuse: fix fuse_fill_write_pages() upper bound calculation
  fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass
  selftests/coredump: Fix "socket_detect_userspace_client" test failure

Author: torvalds

fs/anon_inodes.c

@@ -98,14 +98,25 @@ static struct file_system_type anon_inode_fs_type = {
 	.kill_sb	= kill_anon_super,
 };
 
-static struct inode *anon_inode_make_secure_inode(
-	const char *name,
-	const struct inode *context_inode)
+/**
+ * anon_inode_make_secure_inode - allocate an anonymous inode with security context
+ * @sb:		[in]	Superblock to allocate from
+ * @name:	[in]	Name of the class of the newfile (e.g., "secretmem")
+ * @context_inode:
+ *		[in]	Optional parent inode for security inheritance
+ *
+ * The function ensures proper security initialization through the LSM hook
+ * security_inode_init_security_anon().
+ *
+ * Return:	Pointer to new inode on success, ERR_PTR on failure.
+ */
+struct inode *anon_inode_make_secure_inode(struct super_block *sb, const char *name,
+					   const struct inode *context_inode)
 {
 	struct inode *inode;
 	int error;
 
-	inode = alloc_anon_inode(anon_inode_mnt->mnt_sb);
+	inode = alloc_anon_inode(sb);
 	if (IS_ERR(inode))
 		return inode;
 	inode->i_flags &= ~S_PRIVATE;
@@ -118,6 +129,7 @@ static struct inode *anon_inode_make_secure_inode(
 	}
 	return inode;
 }
+EXPORT_SYMBOL_GPL_FOR_MODULES(anon_inode_make_secure_inode, "kvm");
 
 static struct file *__anon_inode_getfile(const char *name,
 					 const struct file_operations *fops,
@@ -132,7 +144,8 @@ static struct file *__anon_inode_getfile(const char *name,
 		return ERR_PTR(-ENOENT);
 
 	if (make_inode) {
-		inode =	anon_inode_make_secure_inode(name, context_inode);
+		inode =	anon_inode_make_secure_inode(anon_inode_mnt->mnt_sb,
+						     name, context_inode);
 		if (IS_ERR(inode)) {
 			file = ERR_CAST(inode);
 			goto err;