* [merged mm-stable] mm-add-process-info-to-bad-rss-counter-warning.patch removed from -mm tree
@ 2025-08-02 18:53 Andrew Morton
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From: Andrew Morton @ 2025-08-02 18:53 UTC (permalink / raw)
To: mm-commits, vschneid, vincent.guittot, vbabka, surenb, sj, rppt,
rostedt, peterz, mingo, mhocko, mgorman, lorenzo.stoakes,
liam.howlett, kees, juri.lelli, dietmar.eggemann, david, bsegall,
liuqiye2025, akpm
The quilt patch titled
Subject: mm: add process info to bad rss-counter warning
has been removed from the -mm tree. Its filename was
mm-add-process-info-to-bad-rss-counter-warning.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Xuanye Liu <liuqiye2025@163.com>
Subject: mm: add process info to bad rss-counter warning
Date: Wed, 23 Jul 2025 18:09:00 +0800
Enhance the debugging information in check_mm() by including the process
name and PID when reporting bad rss-counter states. This helps identify
which process is associated with the memory accounting issue.
Link: https://lkml.kernel.org/r/20250723100901.1909683-1-liuqiye2025@163.com
Signed-off-by: Xuanye Liu <liuqiye2025@163.com>
Acked-by: SeongJae Park <sj@kernel.org>
Cc: Ben Segall <bsegall@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Kees Cook <kees@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mel Gorman <mgorman <mgorman@suse.de>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Valentin Schneider <vschneid@redhat.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
kernel/fork.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
--- a/kernel/fork.c~mm-add-process-info-to-bad-rss-counter-warning
+++ a/kernel/fork.c
@@ -585,9 +585,12 @@ static void check_mm(struct mm_struct *m
for (i = 0; i < NR_MM_COUNTERS; i++) {
long x = percpu_counter_sum(&mm->rss_stat[i]);
- if (unlikely(x))
- pr_alert("BUG: Bad rss-counter state mm:%p type:%s val:%ld\n",
- mm, resident_page_types[i], x);
+ if (unlikely(x)) {
+ pr_alert("BUG: Bad rss-counter state mm:%p type:%s val:%ld Comm:%s Pid:%d\n",
+ mm, resident_page_types[i], x,
+ current->comm,
+ task_pid_nr(current));
+ }
}
if (mm_pgtables_bytes(mm))
_
Patches currently in -mm which might be from liuqiye2025@163.com are
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2025-08-02 18:53 [merged mm-stable] mm-add-process-info-to-bad-rss-counter-warning.patch removed from -mm tree Andrew Morton
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