Re: [Crash-utility] [PATCH] Fix "kmem -v" option on Linux 5.11-rc1 and later kernels

Date: Tue, 19 Jan 2021 09:42:54 +0000 From: HAGIO KAZUHITO(?????) <k-hagio-ab(a)nec.com&gt; To: &quot;crash-utility(a)redhat.com&quot; <crash-utility(a)redhat.com&gt; Subject: [Crash-utility] [PATCH] Fix "kmem -v" option on Linux 5.11-rc1 and later kernels Message-ID: <OSBPR01MB19911991A7F295330CBC0AC5DDA30(a)OSBPR01MB1991.jpnprd01.prod.outlook.com&gt; Content-Type: text/plain; charset="iso-2022-jp" Fix the "kmem -v" option on Linux 5.11-rc1 and later kernels that contains commit 96e2db456135db0cf2476b6890f1e8b2fdcf21eb ("mm/vmalloc: rework the drain logic"). Without the patch, the option will display nothing or fail with the error message "kmem: invalid kernel virtual address: <address> type: "vmlist addr". Signed-off-by: Kazuhito Hagio <k-hagio-ab(a)nec.com&gt; --- memory.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/memory.c b/memory.c index 0848097eb4f5..33b0ca7af977 100644 --- a/memory.c +++ b/memory.c @@ -403,8 +403,6 @@ vm_init(void) VALID_MEMBER(vmap_area_va_end) && VALID_MEMBER(vmap_area_list) && VALID_MEMBER(vmap_area_vm) && - (VALID_MEMBER(vmap_area_flags) || - (OFFSET(vmap_area_vm) == MEMBER_OFFSET("vmap_area", "purge_list"))) && kernel_symbol_exists("vmap_area_list")) vt->flags |= USE_VMAP_AREA;

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