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From: syzbot <syzbot+079a3b213add54dd18a7@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Forwarded: [PATCH] mm/vmscan: test build to verify VM_WARN_ON_ONCE fix
Date: Sat, 17 Jan 2026 21:02:46 -0800	[thread overview]
Message-ID: <696c6976.a70a0220.34546f.0224.GAE@google.com> (raw)
In-Reply-To: <696b56b1.050a0220.3390f1.0007.GAE@google.com>

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***

Subject: [PATCH] mm/vmscan: test build to verify VM_WARN_ON_ONCE fix
Author: kartikey406@gmail.com

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master

Test build to verify that VM_WARN_ON_ONCE in memcg1_swapout() no
longer triggers after Kairui Song's reordering patch.

This is a local test commit only and should NOT be submitted upstream.

Signed-off-by: Deepanshu Kartikey <kartikey406@gmail.com>
---
 mm/vmscan.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index a0e3f51de749..ac8cffddc2ea 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -760,6 +760,7 @@ static int __remove_mapping(struct address_space *mapping, struct folio *folio,
 
 		if (reclaimed && !mapping_exiting(mapping))
 			shadow = workingset_eviction(folio, target_memcg);
+
 		memcg1_swapout(folio, swap);
 		__swap_cache_del_folio(ci, folio, swap, shadow);
 		swap_cluster_unlock_irq(ci);
-- 
2.43.0


      parent reply	other threads:[~2026-01-18  5:02 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-17  9:30 [syzbot] [cgroups?] [mm?] WARNING in memcg1_swapout syzbot
2026-01-18  0:57 ` Andrew Morton
2026-01-18  4:21   ` Deepanshu Kartikey
2026-01-18  7:01     ` Deepanshu Kartikey
2026-01-18 20:53       ` Andrew Morton
2026-01-20 21:20         ` Shakeel Butt
2026-01-21 14:58         ` Johannes Weiner
2026-01-21 16:35           ` Andrew Morton
2026-01-21 17:01             ` Johannes Weiner
2026-01-18  5:02 ` syzbot [this message]

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