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 953D4645; Wed, 23 Apr 2025 23:56:04 +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=1745452564; cv=none; b=OGCzSWJlC15mOD4E8iIYkZY1A45jWbuIL+n3RteflLwpbNZPgRpn4ZUtBueD1VQd7Z9Ve8w2nolds7ultZWibdHyH5DuGGBpeXWN35EqxTzutibWNta2s22glg6h6B99rZl3lHauPqLXkeFvMWZ53fufEECEicw0lVCltHq0J/0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745452564; c=relaxed/simple; bh=F6qYPQIh4GMZYkGGLy3x+iuZEolsrmdVH4R3wRVKuoc=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=SNikvGFPSMcN4AmdHeIa7O3UJwsSW02zGECxFFAsZ4DRExzq4iWDljN22n7xz+wa3mx+Ns7eVHTwMkOyOxyuFTIydEcZIgkykrJPWUjr6FR2ApwakQHzOzNmZlENApyHASVlgoX9Y8TGPiLzO1tgDCj+Qcn0qWWs1DpmAzBur2k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=k3StTylR; 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="k3StTylR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F02B4C4CEE2; Wed, 23 Apr 2025 23:56:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1745452564; bh=F6qYPQIh4GMZYkGGLy3x+iuZEolsrmdVH4R3wRVKuoc=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=k3StTylRRyGmEOm1CN9a+hQyGJveGKCjO+/gAv5HzcNlS9vHhL8ACRsv4wIw14qd9 SNtMkXBjGKbObaQoPST9S47Lsova/RV45hqXaqstYi9B3ymSiwr6KJxoToka37PoBi eHNs4jucSivIr2jOa0FMR/z36Pb/4WQD/HkJkwDKslSenKdeQMy8uZczVOeDDwnFSQ rCdvzZjER0VJwSjAHahtfkJlGtVtmSePr/hjrhyNFgA6y3pv+iwkHAh5d+sQ2OWMHH wC+AS8nAYZS/IGOE3QiVjb4B5WoNbiJg4W+oYFTaTfXDxwBkD16PsPCNyhT0sZKL0W AcpcociC3Xk4g== Message-ID: Subject: Re: [PATCH v4 1/7] ref_tracker: don't use %pK in pr_ostream() output From: Jeff Layton To: Jakub Kicinski Cc: Andrew Morton , "David S. Miller" , Eric Dumazet , Paolo Abeni , Simon Horman , Kuniyuki Iwashima , Qasim Ijaz , Nathan Chancellor , Andrew Lunn , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Thomas =?ISO-8859-1?Q?Wei=DFschuh?= Date: Wed, 23 Apr 2025 19:56:02 -0400 In-Reply-To: <20250423164655.36e53244@kernel.org> References: <20250418-reftrack-dbgfs-v4-0-5ca5c7899544@kernel.org> <20250418-reftrack-dbgfs-v4-1-5ca5c7899544@kernel.org> <20250423164655.36e53244@kernel.org> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv egyjnSsFt7EGoDjdKqr1TS9syJYFjagYtvWk/UfHlW09X+jOh4vYtfX7iYSx/NfqV3W1D7EDi0PqV T2h6v8i8YqsATFPwO4nuiTmL6I40ZofxVd+9wdRI4Db8yUNA4ZSP2nqLcLtFjClYRBoJvRWvsv4lm 0OX6MYPtv76hka8lW4mnRmZqqx3UtfHX/hF/zH24Gj7A6sYKYLCU3YrI2Ogiu7/ksKcl7goQjpvtV YrOOI5VGLHge0awt7bhMCTM9KAfPc+xL/ZxAMVWd3NCk5SamL2cE99UWgtvNOIYU8m6EjTLhsj8sn 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> FTR I think this is counter productive.=20 >=20 > Reference tracking is a debug feature and you may want to find that > object with a debugger and inspect it. That's not the same as random > drivers printing kernel addresses into logs for not apparent reason. > > Does kmemleak use the hashed address representation? It's a very > similar situation. Looking at mm/kmemleak.c, I think it doesn't. It looks like it casts the pointers to unsigned long and prints them with %08lx: warn_or_seq_printf(seq, "unreferenced object%s 0x%08lx (size %zu):\= n", __object_type_str(object), object->pointer, object->size); I'm not sure if that's any different from %px though. I can make either change in the name formats if that's preferred. --=20 Jeff Layton