linux-kernel - Re: [syzbot] [kernel?] INFO: task hung in worker

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Message-ID: <682739a3.a00a0220.398d88.020b.GAE@google.com>
Date: Fri, 16 May 2025 06:12:03 -0700
From: syzbot <syzbot+c27cd2da6c2dc003b4a1@...kaller.appspotmail.com>
To: bigeasy@...utronix.de, bp@...en8.de, bsegall@...gle.com, 
	dave.hansen@...ux.intel.com, dietmar.eggemann@....com, edumazet@...gle.com, 
	hpa@...or.com, juri.lelli@...hat.com, kerneljasonxing@...il.com, 
	kuba@...nel.org, linux-kernel@...r.kernel.org, mgorman@...e.de, 
	mingo@...hat.com, pabeni@...hat.com, peterz@...radead.org, 
	rostedt@...dmis.org, syzkaller-bugs@...glegroups.com, tglx@...utronix.de, 
	vincent.guittot@...aro.org, vschneid@...hat.com, x86@...nel.org
Subject: Re: [syzbot] [kernel?] INFO: task hung in worker_thread (5)

syzbot suspects this issue was fixed by commit:

commit 66951e4860d3c688bfa550ea4a19635b57e00eca
Author: Peter Zijlstra <peterz@...radead.org>
Date:   Mon Jan 13 12:50:11 2025 +0000

    sched/fair: Fix update_cfs_group() vs DELAY_DEQUEUE

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=100696f4580000
start commit:   aa486552a110 Merge tag 'memblock-v6.12-rc1' of git://git.k..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=6c71bad3e6ab6955
dashboard link: https://syzkaller.appspot.com/bug?extid=c27cd2da6c2dc003b4a1
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12afcaa9980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10edb627980000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: sched/fair: Fix update_cfs_group() vs DELAY_DEQUEUE

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