From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D0F202641CA; Tue, 11 Feb 2025 20:59:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739307572; cv=none; b=pAFG/9b7lSw/PsSwsj7VjutkrknzZycYknw/sBrp3lDhYLJAN2ZNBMCmXiMRqb0FgzaS8N39im+3TA4/28ImJhUZhpYGTzs1nkZD26OCforK+Qe2blfF1p34zUwTrxel1bf8c4UIoxgzQukdVcQB7o0Zu6KLv3oCwFfRpJUlTlU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739307572; c=relaxed/simple; bh=h66F2MARKJ0K3tXXMQGR25Duc5c7sPuk3UNDeq/Ou5Q=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=UfoTo8Ilrr5uaI9nUEBCaZakfvnaGS79pXF0g+0dfTiQb9JUFnTcyeAuFkPMApaiL4y6eWffbbz8CQIWz20YDK6jpiU4+XnDACNRZXkzKt1WzHNNcJfoyiJ9t29r+orm2CKEUb0W+PrrJR03+fJnKaF/1I34ZwOT8o+ayYs1OZ0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eFSP9mMd; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="eFSP9mMd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 273FBC4CEDD; Tue, 11 Feb 2025 20:59:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1739307571; bh=h66F2MARKJ0K3tXXMQGR25Duc5c7sPuk3UNDeq/Ou5Q=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=eFSP9mMdHCC0Y2sUcYf7y1ZEvCSndcc/DPH40qQQQTnxRICFJRta5wkMSrPg0/in8 SndLBNisIGQWlGC+hqEOA40YYSHmfbDKDiVW5a4y17C7krN7UAhaNtcG+/bfVZaQKW r5tKxpq6p8IqRlLSdtJ9mjElyKEmXUWpXgW35sWJB1vO33vtU7SHpn1ohk/Lo2kFmo coGmYguJUtd3bKrZ9abgURH+h0Etism6tpMrvS5VmNd9tBf3LHisTvkJe0jr7vn6Jr wYcF+RML4QYk+098THoOYc6N5Ug7LoX+De/iYLSezd7F3DCn4QPhZaC7caNCzp16Sw imdKM+NgKx0pw== Date: Tue, 11 Feb 2025 10:59:30 -1000 From: Tejun Heo To: Will Deacon Cc: syzbot , catalin.marinas@arm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, maz@kernel.org, mark.rutland@arm.com, richard.xnu.clark@gmail.com, jiangshanlai@gmail.com, marcel@holtmann.org, johan.hedberg@gmail.com, luiz.dentz@gmail.com, linux-bluetooth@vger.kernel.org Subject: Re: [syzbot] [arm?] WARNING in delayed_work_timer_fn Message-ID: References: <00000000000046efb605fec3def0@google.com> <675c28e0.050a0220.17d782.000d.GAE@google.com> <20250211111045.GA8885@willie-the-truck> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250211111045.GA8885@willie-the-truck> On Tue, Feb 11, 2025 at 11:10:46AM +0000, Will Deacon wrote: > Given that this seems to explode a few times a month, I wonder if it's > worth adding some instrumentation to e.g. dump the name of the workqueue? It's usually most useful to print out the work function when identifying the culprit. I'd be happy to take the patch. Thanks. -- tejun