From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AC798C433FE for ; Fri, 4 Mar 2022 15:32:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240322AbiCDPdX (ORCPT ); Fri, 4 Mar 2022 10:33:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59928 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235948AbiCDPdT (ORCPT ); Fri, 4 Mar 2022 10:33:19 -0500 Received: from out2-smtp.messagingengine.com (out2-smtp.messagingengine.com [66.111.4.26]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3296762E0; Fri, 4 Mar 2022 07:32:31 -0800 (PST) Received: from compute2.internal (compute2.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id 9817D5C0116; Fri, 4 Mar 2022 10:32:30 -0500 (EST) Received: from mailfrontend1 ([10.202.2.162]) by compute2.internal (MEProxy); Fri, 04 Mar 2022 10:32:30 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cerno.tech; h=cc :cc:content-type:date:date:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:sender:subject :subject:to:to; s=fm2; bh=Eh43yP8X0SEO8EEHGYTW4XKIT2ubpI7Pl3LWD5 Ok6JQ=; b=v3yojEpX3o1nfNT55oCmXb25fDLij3fFSj5pkVk/1SRjy6UZ5b9W3V OSN/C5DlPBqEdp4FofebQoKJ2apjjdVUbjiRSt+/7msaILpuU1Cy3pyLKLBcei7V ZJLlgA6g7AoMNSZuPgBmK134DKPHqvCO0gihUXRN6ykSBdyw8E2KsCcsWeB9O1CH aYYkDPH3F+jFQy6yVya9OztDFE8eXHFFvkLzYkd8nWMjhG0AnBCwfBS4R2yfxQTr qdqYBfhCZIqdIYeF0cSLUVX8JXGiaejQ0GfE3/jazWDG6Hut8/Fwda1RYPpM++k4 2GfbA2jNTg+mGxmvktxI/0HHN78qlFSg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-type:date:date:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm2; bh=Eh43yP8X0SEO8EEHG YTW4XKIT2ubpI7Pl3LWD5Ok6JQ=; b=lp1wdcgyU3U3Pne+TbBlxM7CfETG2hO1F 5XWIu5JIc2V4tdsFxsHltqJpNu9MUxmpW1BJY/ox7M8SF7qP5OZZIIK75M65E7Fq Gpx0OhytHFB6+tmvT/MargRC5xbqMfMoayN6wFleHOPZLMl3KQ029GS9TNxQKXjo R4UVYrbwNmrG272A8ZdN2FPl/sHxxiO+gm/lS81xqvTlujWvnk+ASoj1b+kxaJM5 8zqZC//ASoI/MrbA+0ZEsSIk3Oc+igl+6zenrqaWSUWSvbxgcRPNgYB7ikp1C9ff fcObnrPZzcH4gLpfO/6XNFH9uX+cVuwIF6b0KEL+GHJqCoe2mncyA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvvddruddtkedgjeejucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhepfffhvffukfhfgggtuggjsehgtderredttddvnecuhfhrohhmpeforgigihhm vgcutfhiphgrrhguuceomhgrgihimhgvsegtvghrnhhordhtvggthheqnecuggftrfgrth htvghrnhepleekgeehhfdutdeljefgleejffehfffgieejhffgueefhfdtveetgeehieeh gedunecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomhepmh grgihimhgvsegtvghrnhhordhtvggthh X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Fri, 4 Mar 2022 10:32:29 -0500 (EST) Date: Fri, 4 Mar 2022 16:32:28 +0100 From: Maxime Ripard To: Greg Kroah-Hartman Cc: Jiri Slaby , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: Deadlock at reboot? Message-ID: <20220304153228.eqclo7sezczzs2t4@houat> References: <20220304104942.lypg3wvlgk2ywi2t@houat> <20220304152042.xvyxxen6yyxgx4bh@houat> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="2327xvni644guxtj" Content-Disposition: inline In-Reply-To: <20220304152042.xvyxxen6yyxgx4bh@houat> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --2327xvni644guxtj Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Mar 04, 2022 at 04:20:42PM +0100, Maxime Ripard wrote: > Hi Greg, >=20 > On Fri, Mar 04, 2022 at 03:15:36PM +0100, Greg Kroah-Hartman wrote: > > On Fri, Mar 04, 2022 at 11:49:42AM +0100, Maxime Ripard wrote: > > > Hi, > > >=20 > > > I'm not entirely sure who I'm supposed to send this to, so apologies = if > > > I forgot somebody. > > >=20 > > > I've had an issue when rebooting on and off for a couple of monthes, = but > > > I got a stacktrace from lockdep today: > > >=20 > > > [71721.872904] reboot: Restarting system > > > [71721.876743] ------------[ cut here ]------------ > > > [71721.877081] > > > [71721.877084] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > > > [71721.877086] WARNING: possible circular locking dependency detected > > > [71721.877088] 5.17.0-rc6-next-20220303-v8+ #10 Not tainted > >=20 > > This is linux-next, does this also happen on Linus's tree? > >=20 > > If not, can you bisect to find the offending commit? >=20 > Like I said, it appeared with multiple versions across the past few > monthes (I only ever got the trace with that next-version though) so I'm > not sure the issue has been introduced recently. >=20 > I'll try a couple of recent Linus' tags, and bisect if I can find > something of interest. It happens with 5.17-rc6, I'll try with older releases Maxime --2327xvni644guxtj Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRcEzekXsqa64kGDp7j7w1vZxhRxQUCYiIxDAAKCRDj7w1vZxhR xYuQAQDspn9drpaNfeifQrWRO46biOfyDMm7nxzD+UpykOtIMgD8Cvvs8U6WKZTH TVY22Xwe7LAd9UarJ3aFUfwP5Z0fuw4= =ZLz1 -----END PGP SIGNATURE----- --2327xvni644guxtj--