The top level events directory dentry does not have a d_fsdata set to a eventfs_file pointer. This dentry is still passed to eventfs_set_attr(). It can not assume that the d_fsdata is set. Check for that. Link: https://lore.kernel.org/all/20231112104158.6638-1-milian.wolff@kdab.com/ Fixes: 9aaee3eebc91 ("eventfs: Save ownership and mode") Reported-by: Milian Wolff <milian.wolff@kdab.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>