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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8404BC71157 for ; Wed, 18 Jun 2025 08:04:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To: Content-Transfer-Encoding:Content-Type:MIME-Version:Message-Id:Date:Subject: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=lJEJerT30uVZeLbMloQis7w9Ly4m8IEIdpJZd3Pc9DU=; b=sjPSslQIJHBFPY JNKD0xwLHz7sIfbS4CQe3fLf/BrH2Sd+QsnmHJp8er+C8l5RqKBD62jHdzALXKJTYkk+OmarvYlFK unxtQqyCZH/v/UDryXA+QWfz9HzMoNyqfE3b9f6Ybb+DX5mxMCwva8+XxBe/tDczJOU8eV507Vl0M kanNiTT4FPl2L954L77UMjMnRpM7u8t4C2vmaB4brwsKTFDbEVlXP8B0vjoueRsFiMRXnDISE3Fb0 PBX8cOLwRZip+daSJKPXj16SSZ2ilzxv+eUsPuhO3nMwrWzs7XwXxQfc9I7N2Vk5xHA9lIlf8OZ6Z PaIDSAaHVKIIw8orwaog==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uRnme-00000009MOD-2f7B; Wed, 18 Jun 2025 08:04:36 +0000 Received: from galois.linutronix.de ([193.142.43.55]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uRncH-00000009LDb-3Gom for linux-arm-kernel@lists.infradead.org; Wed, 18 Jun 2025 07:53:55 +0000 From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1750233232; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=lJEJerT30uVZeLbMloQis7w9Ly4m8IEIdpJZd3Pc9DU=; b=0Z7HXL4dErSQLVLsyMoZIe63Mo11EmBOh3csLLgOHzz+LhnIDZt81PmP8jlfkt3gSvdi4j 4J6Xdo4a2TR1FMqh26GAK/ZC4XVKhKlbzMnshoYYdbjF0r8TjYDq9CCk2nRhaAUKffNMq+ 1qa3Ai5RGeazgqoo1wfbxTx5+WhKju5sCRobkM1c59MxkwJr1mfAuUpXw8Llt1/ECPOolF vPN9OeNq4/rORlb/skFfH2A89jZkYDg3+1cJ9QUnDZb7pEWSKNakM7NG+nmTCw5FCIbolE wNb8F+ul6JoQqOQA7mWaPmqqocYNwq7L7woH+tAEH0Zskpepkg4iDvqcZJHAwA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1750233232; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=lJEJerT30uVZeLbMloQis7w9Ly4m8IEIdpJZd3Pc9DU=; b=tcc7XPlFrtUWw6TWH00NCkmrkFyHBCCHbY9mZWCx9RgB5mKOgKepQea6SWDYFecg6kHkF6 CGKzfR0iDuD5qNBA== Subject: [PATCH 0/3] drm: Don't use %pK through printk Date: Wed, 18 Jun 2025 09:52:19 +0200 Message-Id: <20250618-restricted-pointers-drm-v1-0-781e0d88cd92@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-B4-Tracking: v=1; b=H4sIADNwUmgC/x3MTQ5AMBBA4avIrE1Sv8VVxAIdzELJTCMScXeN5 bd47wElYVLokgeELlY+fESWJjBvo18J2UVDbvLKlKZEIQ3CcyCH58E+kCg62bGxkzVFbdtldBD rU2jh+z/3w/t+klJVYGkAAAA= X-Change-ID: 20250404-restricted-pointers-drm-87b703679fad To: Inki Dae , Jagan Teki , Marek Szyprowski , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Seung-Woo Kim , Kyungmin Park , Krzysztof Kozlowski , Alim Akhtar , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Developer-Signature: v=1; a=ed25519-sha256; t=1750233231; l=1512; i=thomas.weissschuh@linutronix.de; s=20240209; h=from:subject:message-id; bh=ZGg7BEj9Zk6TuFkTwYnSmEoyEZPeB0NY8xBLjHfQJZY=; b=kxcx3RkP3c4uH68PbMFCnE5QAQ0f3j92Ut+jSaXyoSJxxZQVBSkR7GYRX5/mWdahdihpofEYG 8RZi6sQoKLrDiKOK1mYQ4Nb450F8EfdRvHDs3bbJvRDWjQeLIbkJk1m X-Developer-Key: i=thomas.weissschuh@linutronix.de; a=ed25519; pk=pfvxvpFUDJV2h2nY0FidLUml22uGLSjByFbM6aqQQws= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250618_005353_959362_D7B6CA55 X-CRM114-Status: UNSURE ( 9.04 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org In the past %pK was preferable to %p as it would not leak raw pointer values into the kernel log. Since commit ad67b74d2469 ("printk: hash addresses printed with %p") the regular %p has been improved to avoid this issue. Furthermore, restricted pointers ("%pK") were never meant to be used through printk(). They can still unintentionally leak raw pointers or acquire sleeping locks in atomic contexts. Switch to the regular pointer formatting which is safer and easier to reason about. There is still a user of %pK left, but this uses it through seq_file, for which its usage is safe. Signed-off-by: Thomas Weißschuh --- Thomas Weißschuh (3): drm/bridge: samsung-dsim: Don't use %pK through printk drm/exynos: Don't use %pK through printk drm/msm: Don't use %pK through printk drivers/gpu/drm/bridge/samsung-dsim.c | 4 ++-- drivers/gpu/drm/exynos/exynos_drm_gem.c | 2 +- drivers/gpu/drm/exynos/exynos_drm_ipp.c | 32 ++++++++++++++--------------- drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 2 +- drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c | 4 ++-- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 4 ++-- drivers/gpu/drm/msm/msm_mdss.c | 2 +- 7 files changed, 25 insertions(+), 25 deletions(-) --- base-commit: f09079bd04a924c72d555cd97942d5f8d7eca98c change-id: 20250404-restricted-pointers-drm-87b703679fad Best regards, -- Thomas Weißschuh