The patch titled
Subject: mm/debug.c: fix __dump_page when mapping->host is not set
has been added to the -mm tree. Its filename is
mm-fix-__dump_page-when-mapping-host-is-not-set.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-fix-__dump_page-when-mapping-host-is-not-set.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-fix-__dump_page-when-mapping-host-is-not-set.patch
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------------------------------------------------------
From: Oscar Salvador <osalvador@xxxxxxx>
Subject: mm/debug.c: fix __dump_page when mapping->host is not set
Swap mapping->host is NULL, so let us protect __dump_page() for such
cases.
Link: http://lkml.kernel.org/r/20190318072931.29094-1-osalvador@xxxxxxx
Fixes: 1c6fb1d89e73c ("mm: print more information about mapping in __dump_page")
Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/debug.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/debug.c~mm-fix-__dump_page-when-mapping-host-is-not-set
+++ a/mm/debug.c
@@ -79,7 +79,7 @@ void __dump_page(struct page *page, cons
pr_warn("ksm ");
else if (mapping) {
pr_warn("%ps ", mapping->a_ops);
- if (mapping->host->i_dentry.first) {
+ if (mapping->host && mapping->host->i_dentry.first) {
struct dentry *dentry;
dentry = container_of(mapping->host->i_dentry.first, struct dentry, d_u.d_alias);
pr_warn("name:\"%pd\" ", dentry);
_
Patches currently in -mm which might be from osalvador@xxxxxxx are
mm-fix-__dump_page-when-mapping-host-is-not-set.patch
