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

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Message-ID: <de8af03b-4948-47c4-b9f8-68f7e4112264@I-love.SAKURA.ne.jp>
Date: Thu, 3 Jul 2025 10:48:56 +0900
From: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To: Hillf Danton <hdanton@...a.com>, Alan Stern <stern@...land.harvard.edu>,
        Mark Brown <broonie@...nel.org>,
        Mathias Nyman <mathias.nyman@...ux.intel.com>,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Cc: syzbot <syzbot+d630bd89141124cc543e@...kaller.appspotmail.com>,
        gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        Boqun Feng <boqun.feng@...il.com>, linux-usb@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [usb?] INFO: task hung in hub_activate (3)

On 2025/07/03 10:20, Tetsuo Handa wrote:
> Caused by commit 9bd9c8026341 ("usb: hub: Fix flushing of delayed work
> used for post resume purposes") with cc: stable.
> Shouldn't we revert that commit and seek for a different approach
> than wait for a reproducer?
> 

Sorry, wrong commit.

The line was added by commit a49e1e2e785f ("usb: hub: Fix flushing and
scheduling of delayed work that tunes runtime pm") with cc: stable.