linux-kernel - Re: [syzbot] [mm?] INFO: rcu detected stall in sys

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <6797a6b7.050a0220.ac840.01cd.GAE@google.com>
Date: Mon, 27 Jan 2025 07:31:03 -0800
From: syzbot <syzbot+1ec0f904ba50d06110b1@...kaller.appspotmail.com>
To: andrii@...nel.org, ast@...nel.org, bigeasy@...utronix.de, 
	bpf@...r.kernel.org, daniel@...earbox.net, davem@...emloft.net, 
	eddyz87@...il.com, edumazet@...gle.com, haoluo@...gle.com, jiri@...nulli.us, 
	john.fastabend@...il.com, jolsa@...nel.org, kerneljasonxing@...il.com, 
	kpsingh@...nel.org, kuba@...nel.org, linux-kernel@...r.kernel.org, 
	linux-mm@...ck.org, martin.lau@...ux.dev, netdev@...r.kernel.org, 
	pabeni@...hat.com, sdf@...ichev.me, song@...nel.org, 
	syzkaller-bugs@...glegroups.com, tglx@...utronix.de, yonghong.song@...ux.dev
Subject: Re: [syzbot] [mm?] INFO: rcu detected stall in sys_umount (3)

syzbot has bisected this issue to:

commit d15121be7485655129101f3960ae6add40204463
Author: Paolo Abeni <pabeni@...hat.com>
Date:   Mon May 8 06:17:44 2023 +0000

    Revert "softirq: Let ksoftirqd do its job"

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1066f9f8580000
start commit:   feffde684ac2 Merge tag 'for-6.13-rc1-tag' of git://git.ker..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1266f9f8580000
console output: https://syzkaller.appspot.com/x/log.txt?x=1466f9f8580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=50c7a61469ce77e7
dashboard link: https://syzkaller.appspot.com/bug?extid=1ec0f904ba50d06110b1
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13c060f8580000

Reported-by: syzbot+1ec0f904ba50d06110b1@...kaller.appspotmail.com
Fixes: d15121be7485 ("Revert "softirq: Let ksoftirqd do its job"")

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