[BUG] trigger BUG_ON in mas_store_prealloc when low memory

To: "maple-tree@xxxxxxxxxxxxxxxxxxx" <maple-tree@xxxxxxxxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "linux-mm@xxxxxxxxx" <linux-mm@xxxxxxxxx>
Subject: [BUG] trigger BUG_ON in mas_store_prealloc when low memory
From: John Hsu (許永翰) <John.Hsu@xxxxxxxxxxxx>
Date: Thu, 1 Jun 2023 09:27:49 +0000
Accept-language: zh-TW, en-US
Cc: Andrew Yang (楊智強) <Andrew.Yang@xxxxxxxxxxxx>, "liam.howlett@xxxxxxxxxx" <liam.howlett@xxxxxxxxxx>, Qun-wei Lin (林群崴) <Qun-wei.Lin@xxxxxxxxxxxx>, Chinwen Chang (張錦文) <chinwen.chang@xxxxxxxxxxxx>, Kuan-Ying Lee (李冠穎) <Kuan-Ying.Lee@xxxxxxxxxxxx>, Casper Li (李中榮) <casper.li@xxxxxxxxxxxx>, "akpm@xxxxxxxxxxxxxxxxxxxx" <akpm@xxxxxxxxxxxxxxxxxxxx>, "yuzhao@xxxxxxxxxx" <yuzhao@xxxxxxxxxx>, John Hsu (許永翰) <John.Hsu@xxxxxxxxxxxx>