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From: Pavan Kondeti <pavan.kondeti@oss.qualcomm.com>
To: Tejun Heo <tj@kernel.org>
Cc: Pavankumar Kondeti <pavan.kondeti@oss.qualcomm.com>,
	Lai Jiangshan <jiangshanlai@gmail.com>,
	linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH] workqueue: Fix NULL current_pwq deref in flush dependency check
Date: Mon, 28 Sep 2026 09:29:24 +0530	[thread overview]
Message-ID: <b4f1d325-8e4a-41c7-a9be-44c68ed66d88@quicinc.com> (raw)
In-Reply-To: <42a21c8fdeb903d8511a279b5cf2e242@kernel.org>

On Sat, Sep 26, 2026 at 10:30:46PM -1000, Tejun Heo wrote:
> Applied to wq/for-7.3-fixes.
> 
> - is_chained_work() has the same problem. It dereferences
>   worker->current_pwq after checking only worker. It is only reached when
>   queueing on a draining or destroying workqueue, but a kworker outside a
>   work item would crash there the same way. Can you send a fix for that
>   one too?
> 
Thanks Tejun. I have sent the fix for is_chained_work() and CC'd stable.

I have also sent a separate fix to cover current_is_workqueue_mem_reclaim()
which is exported but there is only one user (NFS). It does not appear
to me that this can be triggered from NFS code path, so for now I did
not copy stable for this patch.

Thanks,
Pavan

      reply	other threads:[~2026-09-28  3:59 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-25  9:55 Pavankumar Kondeti
2026-09-27  8:30 ` Tejun Heo
2026-09-28  3:59   ` Pavan Kondeti [this message]

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