linux-kernel - Re: [syzbot] [mm?] UBSAN: shift-out-of-bounds in do_shrink

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Message-ID: <Zl4YEc01cnknfZTu@P9FQF9L96D>
Date: Mon, 3 Jun 2024 12:22:57 -0700
From: Roman Gushchin <roman.gushchin@...ux.dev>
To: Qi Zheng <arch0.zheng@...il.com>
Cc: syzbot <syzbot+981b8efffb3d71c46bef@...kaller.appspotmail.com>,
	akpm@...ux-foundation.org, david@...morbit.com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	muchun.song@...ux.dev, syzkaller-bugs@...glegroups.com,
	zhengqi.arch@...edance.com, shakeel.butt@...ux.dev,
	Johannes Weiner <hannes@...xchg.org>
Subject: Re: [syzbot] [mm?] UBSAN: shift-out-of-bounds in do_shrink_slab

On Mon, Jun 03, 2024 at 11:25:42AM +0800, Qi Zheng wrote:
> Hi,
> 
> I think this bug was introduced by commit 6be5e186fd65
> ("mm: vmscan: restore incremental cgroup iteration"), and
> can be fixed by commit 9c8805439853 ("mm: vmscan: reset sc->priority on
> retry").

I'm almost sure it's the same issue.

Thanks