From nobody Sun Oct 5 01:45:07 2025 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 0EDAB27603B; Mon, 11 Aug 2025 10:49:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754909351; cv=none; b=NqzkXu0aEfCxwjJlj+bjKEuvEVczYXOXWRM4fJT7T6mYHcEoC0otJco5PS8ZvLROoOn2NWGoKdE5A3EdJ9JZ+3F+2TtgiW2NGsBOUseimtMntvKJnF1YL7VQpNtKg1Tvkw3O//Vv/K/lcj5Uy99jMnGL1Athz6ZZ0KXcvPICIYw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754909351; c=relaxed/simple; bh=uujVNNdVW9U8D1UA5bK3BeelcyOCRx9wp/Szp8PjOrs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=Kdaq7eMUddQB06UV+D99XpFZ5QAmMLrmcgLwSs/LAz6l1h59CSMoLwtYeAzdwo8yTDVvkxKQ9Wwv6dV4GO4eitng57QYiab95WSztCyA1SJx9qXt7OTVls9Kkq4YGDm5hjLZcp+PIZkVTF0VE9gZQ7fr246Vreplmp3NZdE0/+M= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=26q3kVXq; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=lq/81gBD; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="26q3kVXq"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="lq/81gBD" From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1754909347; 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=gQ9eh9/zvfBpPdf1yOHxLVFMwlIvEemowzDPpcMhBiw=; b=26q3kVXq+tvWpcx/uph5sYEnfSm8PK4NJLGLfaHmsbuaFK2HKl4QtEyUjPW6lbFaEyQIhA ieKZBp2CIs5LfnpMEuvwlmhIzYolzpEEZpIYv8EedMvLDBTaHiyf4TptK5szgNNbNuycRW Rhwzd6rA7ovLJu46hMGJlwW/LSyRiQa2MI0OLY8JBUWIuAAcN46dwO7j6jhyKzFzx5IJF8 5PaBrCc+vJhGdNNYUP1rqikyC5510IY0EMxTWQCXAOmqckWn3q9YjUdyTfZwpoWyq4ND9B huyUEwVUYYOdTwW0Dgd0bT15YAOg0O61hPKO0tLYYaMg8L3QRmPS80+4mB59Ag== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1754909347; 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=gQ9eh9/zvfBpPdf1yOHxLVFMwlIvEemowzDPpcMhBiw=; b=lq/81gBDE3//kJOfgqNcJMGNoOW0xEXf1xPqOgZkVVz/JhV9wMp3sCgakArU9Pg6BDq2Jr RobtYWg2KPI5DaAw== Date: Mon, 11 Aug 2025 12:49:01 +0200 Subject: [PATCH v2] ARM: mm: Don't use %pK through printk 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="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250811-restricted-pointers-arm-v2-1-74bac42f3699@linutronix.de> X-B4-Tracking: v=1; b=H4sIAJzKmWgC/4WNQQ6CMBBFr0Jm7ZhO1aCuvIdhUcogk2hLppVgC He3cgGX7yX//QUSq3CCa7WA8iRJYihgdxX4wYUHo3SFwRp7MpZqVE5ZxWfucIwSMmtCpy809fF yaIm86T2U9ajcy7yV703hQVKO+tmOJvrZ/82JkNA5Z/rWWqazvz0lvLPGIPO+Y2jWdf0ClQljZ MIAAAA= X-Change-ID: 20250217-restricted-pointers-arm-07493b11c0fc To: Russell King , Kees Cook Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" , linux-hardening@vger.kernel.org, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Developer-Signature: v=1; a=ed25519-sha256; t=1754909344; l=1462; i=thomas.weissschuh@linutronix.de; s=20240209; h=from:subject:message-id; bh=uujVNNdVW9U8D1UA5bK3BeelcyOCRx9wp/Szp8PjOrs=; b=gW95gA8CAxjgBbyt0Lk1m/IVLgeB7Er6bzFTRV+h6PPf3GKicD4VoCDU4d77LX2Paa/BOkOFB X2A9TK2FJYmDTzmXxSWIXj+G9t2gfGNK2pVLpPDB+l0iP+S9/xYWaKa X-Developer-Key: i=thomas.weissschuh@linutronix.de; a=ed25519; pk=pfvxvpFUDJV2h2nY0FidLUml22uGLSjByFbM6aqQQws= Restricted pointers ("%pK") were never meant to be used through printk(). They can acquire sleeping locks in atomic contexts. Switch to %px over the more secure %p as this usage is a debugging aid, gated behind CONFIG_DEBUG_VIRTUAL and used by WARN(). Link: https://lore.kernel.org/lkml/20250113171731-dc10e3c1-da64-4af0-b767-7= c7070468023@linutronix.de/ Signed-off-by: Thomas Wei=C3=9Fschuh --- Changes in v2: - Rebase on v6.17-rc1 - Switch to %px instead - Link to v1: https://lore.kernel.org/r/20250217-restricted-pointers-arm-v1= -1-aaa0fb22e18c@linutronix.de --- arch/arm/mm/physaddr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mm/physaddr.c b/arch/arm/mm/physaddr.c index 3f263c840ebc462e13c34d33be0161e7a473173d..1a37ebfacbba969b9341fe17518= cdd81fb2899b6 100644 --- a/arch/arm/mm/physaddr.c +++ b/arch/arm/mm/physaddr.c @@ -38,7 +38,7 @@ static inline bool __virt_addr_valid(unsigned long x) phys_addr_t __virt_to_phys(unsigned long x) { WARN(!__virt_addr_valid(x), - "virt_to_phys used for non-linear address: %pK (%pS)\n", + "virt_to_phys used for non-linear address: %px (%pS)\n", (void *)x, (void *)x); =20 return __virt_to_phys_nodebug(x); --- base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585 change-id: 20250217-restricted-pointers-arm-07493b11c0fc Best regards, --=20 Thomas Wei=C3=9Fschuh