There is fail when excute "kmem -i" on ARM64+kernel-5.10 vmcore: crash> kmem -i kmem: invalid kernel virtual address: ffffffff0be00030 type: "page_type" The slab page is determined by the PG_slab bit of page flag on this vmcore, when traverse the pages of sparse memory, page_slab() fails to readmem page_type for a invalid page. Fix this by enhance the determination of slab page. Signed-off-by: qiwu.chen <qiwu.chen(a)transsion.com&gt; --- memory.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/memory.c b/memory.c index 8c01ed0..e4a058a 100644 --- a/memory.c +++ b/memory.c @@ -374,6 +374,8 @@ static bool page_slab(ulong page, ulong flags) if (vt->flags & SLAB_PAGEFLAGS) { if ((flags >> vt->PG_slab) & 1) return TRUE; + else + return FALSE; } if (VALID_MEMBER(page_page_type)) { -- 2.25.1 -- Crash-utility mailing list -- devel(a)lists.crash-utility.osci.io To unsubscribe send an email to devel-leave(a)lists.crash-utility.osci.io https://${domain_name}/admin/lists/devel.lists.crash-utility.osci.io/ Contribution Guidelines: https://github.com/crash-utility/crash/wiki