Hosts the 0x221E linux distro kernel. https://git.0xinfinity.dev/distro/kernel.git/atom?h=master 2025-07-10T05:41:53Z 2025-07-10T05:41:53Z Ye Liu 2025-05-30T05:58:55Z urn:sha1:fee8870a09c84347f1bd51ba094489869a0df33d Introduces a new drgn script, `show_page_info.py`, which allows users to analyze the state of a page given a process ID (PID) and a virtual address (VADDR). This can help kernel developers or debuggers easily inspect page-related information in a live kernel or vmcore. The script extracts information such as the page flags, mapping, and other metadata relevant to diagnosing memory issues. Output example: sudo ./show_page_info.py 1 0x7fc988181000 PID: 1 Comm: systemd mm: 0xffff8d22c4089700 RAW: 0017ffffc000416c fffff939062ff708 fffff939062ffe08 ffff8d23062a12a8 RAW: 0000000000000000 ffff8d2323438f60 0000002500000007 ffff8d23203ff500 Page Address: 0xfffff93905664e00 Page Flags: PG_referenced|PG_uptodate|PG_lru|PG_head|PG_active| PG_private|PG_reported|PG_has_hwpoisoned Page Size: 4096 Page PFN: 0x159938 Page Physical: 0x159938000 Page Virtual: 0xffff8d2319938000 Page Refcount: 37 Page Mapcount: 7 Page Index: 0x0 Page Memcg Data: 0xffff8d23203ff500 Memcg Name: init.scope Memcg Path: /sys/fs/cgroup/memory/init.scope Page Mapping: 0xffff8d23062a12a8 Page Anon/File: File Page VMA: 0xffff8d22e06e0e40 VMA Start: 0x7fc988181000 VMA End: 0x7fc988185000 This page is part of a compound page. This page is the head page of a compound page. Head Page: 0xfffff93905664e00 Compound Order: 2 Number of Pages: 4 Link: https://lkml.kernel.org/r/20250530055855.687067-1-ye.liu@linux.dev Signed-off-by: Ye Liu <liuye@kylinos.cn> Tested-by: SeongJae Park <sj@kernel.org> Reviewed-by: Stephen Brennan <stephen.s.brennan@oracle.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: Omar Sandoval <osandov@osandov.com> Cc: "Paul E . McKenney" <paulmck@kernel.org> Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>