Hi Christian,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree:   https://github.com/ammarfaizi2/linux-block brauner/linux/fs.acl.rework
head:   baac47dc33766dfb02917cba69b698f1a9fd1f84
commit: 9c3326476632b739e6d01b4dd52bb3b56613eecc [3/30] fs: rename current get acl method
reproduce:
        # https://github.com/ammarfaizi2/linux-block/commit/9c3326476632b739e6d01b4dd52bb3b56613eecc
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block brauner/linux/fs.acl.rework
        git checkout 9c3326476632b739e6d01b4dd52bb3b56613eecc
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        make htmldocs

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> Documentation/filesystems/locking.rst:107: WARNING: Malformed table.

vim +107 Documentation/filesystems/locking.rst

    58	
    59		int (*create) (struct inode *,struct dentry *,umode_t, bool);
    60		struct dentry * (*lookup) (struct inode *,struct dentry *, unsigned int);
    61		int (*link) (struct dentry *,struct inode *,struct dentry *);
    62		int (*unlink) (struct inode *,struct dentry *);
    63		int (*symlink) (struct inode *,struct dentry *,const char *);
    64		int (*mkdir) (struct inode *,struct dentry *,umode_t);
    65		int (*rmdir) (struct inode *,struct dentry *);
    66		int (*mknod) (struct inode *,struct dentry *,umode_t,dev_t);
    67		int (*rename) (struct inode *, struct dentry *,
    68				struct inode *, struct dentry *, unsigned int);
    69		int (*readlink) (struct dentry *, char __user *,int);
    70		const char *(*get_link) (struct dentry *, struct inode *, struct delayed_call *);
    71		void (*truncate) (struct inode *);
    72		int (*permission) (struct inode *, int, unsigned int);
    73		struct posix_acl * (*get_inode_acl)(struct inode *, int, bool);
    74		int (*setattr) (struct dentry *, struct iattr *);
    75		int (*getattr) (const struct path *, struct kstat *, u32, unsigned int);
    76		ssize_t (*listxattr) (struct dentry *, char *, size_t);
    77		int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start, u64 len);
    78		void (*update_time)(struct inode *, struct timespec *, int);
    79		int (*atomic_open)(struct inode *, struct dentry *,
    80					struct file *, unsigned open_flag,
    81					umode_t create_mode);
    82		int (*tmpfile) (struct user_namespace *, struct inode *,
    83				struct file *, umode_t);
    84		int (*fileattr_set)(struct user_namespace *mnt_userns,
    85				    struct dentry *dentry, struct fileattr *fa);
    86		int (*fileattr_get)(struct dentry *dentry, struct fileattr *fa);
    87	
    88	locking rules:
    89		all may block
    90	
    91	=============	=============================================
    92	ops		i_rwsem(inode)
    93	=============	=============================================
    94	lookup:		shared
    95	create:		exclusive
    96	link:		exclusive (both)
    97	mknod:		exclusive
    98	symlink:	exclusive
    99	mkdir:		exclusive
   100	unlink:		exclusive (both)
   101	rmdir:		exclusive (both)(see below)
   102	rename:		exclusive (all)	(see below)
   103	readlink:	no
   104	get_link:	no
   105	setattr:	exclusive
   106	permission:	no (may not block if called in rcu-walk mode)
 > 107	get_inode_acl:	no
   108	getattr:	no
   109	listxattr:	no
   110	fiemap:		no
   111	update_time:	no
   112	atomic_open:	shared (exclusive if O_CREAT is set in open flags)
   113	tmpfile:	no
   114	fileattr_get:	no or exclusive
   115	fileattr_set:	exclusive
   116	=============	=============================================
   117	
   118	
   119		Additionally, ->rmdir(), ->unlink() and ->rename() have ->i_rwsem
   120		exclusive on victim.
   121		cross-directory ->rename() has (per-superblock) ->s_vfs_rename_sem.
   122	

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