From 4ad19017f1b10ea23571a13c1236197aa35b2e7a Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Wed, 3 Apr 2024 17:42:47 -0700 Subject: __mod_memcg_lruvec_state(): enhance diagnostics sysbot reports a warning (https://lkml.kernel.org/r/0000000000007545d00615188a03@google.com). Add additional info to perhaps help with this. Signed-off-by: Andrew Morton --- mm/memcontrol.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index aad2a2e81726..9160fe0fae71 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1014,10 +1014,12 @@ static void __mod_memcg_lruvec_state(struct lruvec *lruvec, case NR_ANON_MAPPED: case NR_FILE_MAPPED: case NR_ANON_THPS: - WARN_ON_ONCE(!in_task()); + if (WARN_ON_ONCE(!in_task())) + pr_warn("stat item index: %d\n", idx); break; default: - VM_WARN_ON_IRQS_ENABLED(); + if (VM_WARN_ON_IRQS_ENABLED()) + pr_warn("stat item index: %d\n", idx); } } -- cgit v1.2.3