+ mm-damon-vaddr-hide-kernel-pointer-from-damon_va_three_regions-failure-log.patch added to -mm tree

+ mm-damon-vaddr-hide-kernel-pointer-from-damon_va_three_regions-failure-log.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/damon/vaddr: hide kernel pointer from damon_va_three_regions() failure log
has been added to the -mm tree.  Its filename is
     mm-damon-vaddr-hide-kernel-pointer-from-damon_va_three_regions-failure-log.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-damon-vaddr-hide-kernel-pointer-from-damon_va_three_regions-failure-log.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-damon-vaddr-hide-kernel-pointer-from-damon_va_three_regions-failure-log.patch

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------------------------------------------------------
From: SeongJae Park <sj@kernel.org>
Subject: mm/damon/vaddr: hide kernel pointer from damon_va_three_regions() failure log

The failure log message for 'damon_va_three_regions()' prints the target
id, which is a 'struct pid' pointer in the case.  To avoid exposing the
kernel pointer via the log, this commit makes the log to use the index of
the target in the context's targets list instead.

Link: https://lkml.kernel.org/r/20211229131016.23641-4-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/damon/vaddr.c |   10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

--- a/mm/damon/vaddr.c~mm-damon-vaddr-hide-kernel-pointer-from-damon_va_three_regions-failure-log
+++ a/mm/damon/vaddr.c
@@ -232,13 +232,19 @@ static int damon_va_three_regions(struct
 static void __damon_va_init_regions(struct damon_ctx *ctx,
 				     struct damon_target *t)
 {
+	struct damon_target *ti;
 	struct damon_region *r;
 	struct damon_addr_range regions[3];
 	unsigned long sz = 0, nr_pieces;
-	int i;
+	int i, tidx = 0;
 
 	if (damon_va_three_regions(t, regions)) {
-		pr_debug("Failed to get three regions of target %lu\n", t->id);
+		damon_for_each_target(ti, ctx) {
+			if (ti == t)
+				break;
+			tidx++;
+		}
+		pr_debug("Failed to get three regions of %dth target\n", tidx);
 		return;
 	}
 
_

Patches currently in -mm which might be from sj@kernel.org are

mm-damon-remove-some-no-need-func-definitions-in-damonh-file-fix.patch
mm-damon-convert-macro-functions-to-static-inline-functions.patch
docs-admin-guide-mm-damon-usage-update-for-scheme-quotas-and-watermarks.patch
docs-admin-guide-mm-damon-usage-remove-redundant-information.patch
docs-admin-guide-mm-damon-usage-mention-tracepoint-at-the-beginning.patch
docs-admin-guide-mm-damon-usage-update-for-kdamond_pid-and-mkrm_contexts.patch
mm-damon-remove-a-mistakenly-added-comment-for-a-future-feature.patch
mm-damon-schemes-account-scheme-actions-that-successfully-applied.patch
mm-damon-schemes-account-how-many-times-quota-limit-has-exceeded.patch
mm-damon-reclaim-provide-reclamation-statistics.patch
docs-admin-guide-mm-damon-reclaim-document-statistics-parameters.patch
mm-damon-dbgfs-support-all-damos-stats.patch
docs-admin-guide-mm-damon-usage-update-for-schemes-statistics.patch
mm-damon-dbgfs-remove-a-unnecessary-variable.patch
mm-damon-vaddr-use-pr_debug-for-damon_va_three_regions-failure-logging.patch
mm-damon-vaddr-hide-kernel-pointer-from-damon_va_three_regions-failure-log.patch
mm-damon-hide-kernel-pointer-from-tracepoint-event.patch