On Tue, 24 Dec 2024 at 11:18, Al Viro <viro@xxxxxxxxxxxxxxxxxx> wrote:
>
> if (f)
> seq_file_path(m, f, " \t\n\\<");
> else
> seq_puts(m, "<none>");
Maybe seq_file_path() could do the "<none>" thing itself.
Right now it looks like d_path() just oopses with a NULL pointer
dereference if you pass it a NULL path. Our printk() routines -
including '%pd' - tend to do "(null)" for this case (and also handle
ERR_PTR() cases) thanks to the 'check_pointer()' logic.
Linus
