* [PATCH] mm: Add process info to bad rss-counter warning
@ 2025-07-23 10:09 Xuanye Liu
2025-07-23 16:40 ` SeongJae Park
0 siblings, 1 reply; 2+ messages in thread
From: Xuanye Liu @ 2025-07-23 10:09 UTC (permalink / raw)
To: Ingo Molnar, Peter Zijlstra, Juri Lelli, Vincent Guittot,
Andrew Morton, David Hildenbrand, Kees Cook
Cc: Xuanye Liu, Dietmar Eggemann, Steven Rostedt, Ben Segall,
Mel Gorman, Valentin Schneider, Lorenzo Stoakes, Liam R. Howlett,
Vlastimil Babka, Mike Rapoport, Suren Baghdasaryan, Michal Hocko,
linux-kernel, linux-mm
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.
Signed-off-by: Xuanye Liu <liuqiye2025@163.com>
---
kernel/fork.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/kernel/fork.c b/kernel/fork.c
index cfe2f1df5f27..e02fa515b77c 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -584,9 +584,12 @@ static void check_mm(struct mm_struct *mm)
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))
--
2.43.0
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] mm: Add process info to bad rss-counter warning
2025-07-23 10:09 [PATCH] mm: Add process info to bad rss-counter warning Xuanye Liu
@ 2025-07-23 16:40 ` SeongJae Park
0 siblings, 0 replies; 2+ messages in thread
From: SeongJae Park @ 2025-07-23 16:40 UTC (permalink / raw)
To: Xuanye Liu
Cc: SeongJae Park, Ingo Molnar, Peter Zijlstra, Juri Lelli,
Vincent Guittot, Andrew Morton, David Hildenbrand, Kees Cook,
Dietmar Eggemann, Steven Rostedt, Ben Segall, Mel Gorman,
Valentin Schneider, Lorenzo Stoakes, Liam R. Howlett,
Vlastimil Babka, Mike Rapoport, Suren Baghdasaryan, Michal Hocko,
linux-kernel, linux-mm
On Wed, 23 Jul 2025 18:09:00 +0800 Xuanye Liu <liuqiye2025@163.com> wrote:
> 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.
>
> Signed-off-by: Xuanye Liu <liuqiye2025@163.com>
Acked-by: SeongJae Park <sj@kernel.org>
Thanks,
SJ
[...]
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2025-07-23 16:40 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2025-07-23 10:09 [PATCH] mm: Add process info to bad rss-counter warning Xuanye Liu
2025-07-23 16:40 ` SeongJae Park
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox