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

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Date: Fri, 03 May 2024 12:58:03 -0700
From: syzbot <syzbot+1acbadd9f48eeeacda29@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, brauner@...nel.org, davem@...emloft.net, 
	dvyukov@...gle.com, elver@...gle.com, glider@...gle.com, hdanton@...a.com, 
	jhs@...atatu.com, kasan-dev@...glegroups.com, keescook@...omium.org, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-mm@...ck.org, luyun@...inos.cn, netdev@...r.kernel.org, 
	pctammela@...atatu.com, syzkaller-bugs@...glegroups.com, victor@...atatu.com, 
	viro@...iv.linux.org.uk, vladimir.oltean@....com
Subject: Re: [syzbot] [kasan?] [mm?] INFO: rcu detected stall in __run_timer_base

syzbot has bisected this issue to:

commit da71714e359b64bd7aab3bd56ec53f307f058133
Author: Jamal Hadi Salim <jhs@...atatu.com>
Date:   Tue Aug 22 10:12:31 2023 +0000

    net/sched: fix a qdisc modification with ambiguous command request

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13b9b317180000
start commit:   fe46a7dd189e Merge tag 'sound-6.9-rc1' of git://git.kernel..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1079b317180000
console output: https://syzkaller.appspot.com/x/log.txt?x=17b9b317180000
kernel config:  https://syzkaller.appspot.com/x/.config?x=fe78468a74fdc3b7
dashboard link: https://syzkaller.appspot.com/bug?extid=1acbadd9f48eeeacda29
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16435913180000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=111600cb180000

Reported-by: syzbot+1acbadd9f48eeeacda29@...kaller.appspotmail.com
Fixes: da71714e359b ("net/sched: fix a qdisc modification with ambiguous command request")

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