linux-kernel - Re: [syzbot] [fs?] [mm?] INFO: task hung in page_cache_ra

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Message-ID: <00000000000026b5250621249667@google.com>
Date: Mon, 02 Sep 2024 08:28:01 -0700
From: syzbot <syzbot+265e1cae90f8fa08f14d@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, davem@...emloft.net, johan.hedberg@...il.com, 
	kuba@...nel.org, linma@....edu.cn, linux-bluetooth@...r.kernel.org, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-mm@...ck.org, luiz.dentz@...il.com, marcel@...tmann.org, 
	netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com, willy@...radead.org
Subject: Re: [syzbot] [fs?] [mm?] INFO: task hung in page_cache_ra_unbounded (2)

syzbot has bisected this issue to:

commit e305509e678b3a4af2b3cfd410f409f7cdaabb52
Author: Lin Ma <linma@....edu.cn>
Date:   Sun May 30 13:37:43 2021 +0000

    Bluetooth: use correct lock to prevent UAF of hdev object

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=16a579eb980000
start commit:   431c1646e1f8 Linux 6.11-rc6
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=15a579eb980000
console output: https://syzkaller.appspot.com/x/log.txt?x=11a579eb980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=660f6eb11f9c7dc5
dashboard link: https://syzkaller.appspot.com/bug?extid=265e1cae90f8fa08f14d
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16f8f0fb980000

Reported-by: syzbot+265e1cae90f8fa08f14d@...kaller.appspotmail.com
Fixes: e305509e678b ("Bluetooth: use correct lock to prevent UAF of hdev object")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection