This is potentially useful debugging information and matches the existing page offset provided.
Use the raw __linear_virt_page_index() function so as to always output this value regardless of whether the mapping is file-backed or not. Signed-off-by: Lorenzo Stoakes (ARM) <[email protected]> --- mm/memory.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/mm/memory.c b/mm/memory.c index d5e87624f692..56b244552f13 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -631,13 +631,14 @@ static void print_bad_page_map(struct vm_area_struct *vma, { struct address_space *mapping; char entry_str[PTVAL_STR_MAX]; - pgoff_t index; + pgoff_t index, virt_index; if (is_bad_page_map_ratelimited()) return; mapping = vma->vm_file ? vma->vm_file->f_mapping : NULL; index = linear_page_index(vma, addr); + virt_index = __linear_virt_page_index(vma, addr); ptval_bytes_to_hex_str(entry_str, sizeof(entry_str), entry, entry_size); pr_alert("BUG: Bad page map in process %s %s:%s", current->comm, @@ -645,8 +646,9 @@ static void print_bad_page_map(struct vm_area_struct *vma, __print_bad_page_map_pgtable(vma->vm_mm, addr); if (page) dump_page(page, "bad page map"); - pr_alert("addr:%px vm_flags:%08lx anon_vma:%px mapping:%px index:%lx\n", - (void *)addr, vma->vm_flags, vma->anon_vma, mapping, index); + pr_alert("addr:%px vm_flags:%08lx anon_vma:%px mapping:%px index:%lx virt_index:%lx\n", + (void *)addr, vma->vm_flags, vma->anon_vma, mapping, index, + virt_index); pr_alert("file:%pD fault:%ps mmap:%ps mmap_prepare: %ps read_folio:%ps\n", vma->vm_file, vma->vm_ops ? vma->vm_ops->fault : NULL, -- 2.55.0
