From patchwork Sun Jun 9 04:54:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vincent Mailhol X-Patchwork-Id: 13691151 X-Patchwork-Delegate: kuba@kernel.org Received: from mail-pf1-f176.google.com (mail-pf1-f176.google.com [209.85.210.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0262FF4E7; Sun, 9 Jun 2024 04:54:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.176 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717908893; cv=none; b=N02WGQYdxGcZp2LlT/XWGa2d9GFqJfzzLLTWgsa3gkuOTsX4yrQl2+xu+hOhJe2oONKr/4lIx66AgBF36DZRrmv5auFBtI2K+QzrDW+NH+t8HSJwlhfVD+8h8qcXIJ89crHFGL/mJc1N+2qMNnHydpWG3O6b2Xd36smUGKVGrZg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717908893; c=relaxed/simple; bh=FInk916v2m7Zh7+cgwypSrU7ivM0kVr+jqvRdof8/CE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=TGoT9yEgXpDnh65RaODD7fPr1qDQARha7E2329VWhm0Qi/nnr03WnGB4oneNvPwnTM9sCPMLoIq+DfsCgzEgMFxPMeUoqyFxkpolnp31L+jvnHlcnu4rFNnaDsKUrZZsd9bgJ7SZDEoAbjbDyAfu8RBWWGRL7/xUrJqw6BEpVd8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=wanadoo.fr; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=QwU0YvI4; arc=none smtp.client-ip=209.85.210.176 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=wanadoo.fr Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="QwU0YvI4" Received: by mail-pf1-f176.google.com with SMTP id d2e1a72fcca58-70435f4c330so146910b3a.1; Sat, 08 Jun 2024 21:54:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1717908891; x=1718513691; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:sender:from:to:cc:subject:date :message-id:reply-to; bh=Uc81iOGnINBSW07LGFje5b0VrHCOBORcUMbmc9odnls=; b=QwU0YvI4nq7eZPLibDKdaDfcZeqkP0gpyQzvkAdEdg/fh1GKTRJqQjG1O5ruBb/q+x urEZAoreGdXqBvKX/jzyjhsY7jancQGL42YQiJYaijoM4eWJYCHIAy3XOOIqMmnRJnwP ACuVY5pG/E7osypHbdcCtBWS34DdNqTZKgdPrx9vESgsGIyLp0T3LvbvOXHgZUaOWQQS bNzKY4sAdkX+UrBWmS0xNaaVqFEZ0MTVI9DNSujI+7QpA0VW0ZTMw3U93PbeecQT94v0 aBv1wiNTtujW+w1wdTQg8bvtfTkkmj3uDXwN55bICbNXjy/hT4wKdkqefFTt2QYNBT+q yKLw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1717908891; x=1718513691; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:sender:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=Uc81iOGnINBSW07LGFje5b0VrHCOBORcUMbmc9odnls=; b=mz7Kkshyu7URqd8eGVEYPiXujH5Fpbqv8XYSR7SaeZh4//Z0/ADnhnheGYFTEX1W8u Ik3ztumRmi2OZTGN9JbaDPAmvV9qxgwc3TGVnA9g4tW9C5svT4OQHNUUBnL2qNFaDV+W KsrzBWnZ4KAHcKuPTr/wbYE59SX0XD6J6zQ0tB72oCl8Yy+2PXk9kh9jgoZrzxUAOEYk qUNXBn1GMh6FXsTT7bu+gEVYD2kl5+zfTW5gbhG4BHHcs2zF1UjkhcjwIqXgZ3bywq/a 4IgiAWYZ1Tltu9AF2q+xVlWFIvSv6dMYdlnUoJkJ/WK0vYpOIfph74YqbqTsXPeInPqy rJDw== X-Forwarded-Encrypted: i=1; AJvYcCUftTXBfAuon8tM9wTDi+w0hzyhQhl1UgcT/KNBKKP6CH7UHLZW2YEOdAUIST+mhRbv334c6GzNda6GUfFBSFN155ctYj+/NEE82GLiASERhO0KFMavFknYIzofWrNrkzlbxLw2UWhpqNDPtMYHeW7RR99MjmVryGRKaT+Rn9yQxeUa X-Gm-Message-State: AOJu0YxGVzsT1XIQZtYZe6yxICCRd/efkG887o7UJP/WpINUjMprQID3 WaYsoBzTItgNz+0MB+lfX+MvgA4ZvGrHedOJRhOzr6nBMM83utbl X-Google-Smtp-Source: AGHT+IH++yGmRIHsSRLOhbaqBfY4S5ssBnHrO5XjYlIacCU2GTuP5M1ap/QcAxYhZV1/HpMMjnSjEQ== X-Received: by 2002:a05:6a00:4b14:b0:702:2749:6097 with SMTP id d2e1a72fcca58-7040c615dbfmr5874482b3a.1.1717908891126; Sat, 08 Jun 2024 21:54:51 -0700 (PDT) Received: from XH22050090-L.ad.ts.tri-ad.global ([103.175.111.222]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7041ec6f9cesm2284887b3a.78.2024.06.08.21.54.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 08 Jun 2024 21:54:50 -0700 (PDT) Sender: Vincent Mailhol From: Vincent Mailhol To: Marc Kleine-Budde , linux-can@vger.kernel.org Cc: Thomas Kopp , Manivannan Sadhasivam , "Gustavo A . R . Silva" , netdev@vger.kernel.org, linux-hardening@vger.kernel.org, Vincent Mailhol , Kees Cook Subject: [PATCH 1/2] can: peak_canfd: decorate pciefd_board.can with __counted_by() Date: Sun, 9 Jun 2024 13:54:18 +0900 Message-Id: <20240609045419.240265-2-mailhol.vincent@wanadoo.fr> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240609045419.240265-1-mailhol.vincent@wanadoo.fr> References: <20240609045419.240265-1-mailhol.vincent@wanadoo.fr> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org A new __counted_by() attribute was introduced in [1]. It makes the compiler's sanitizer aware of the actual size of a flexible array member, allowing for additional runtime checks. Move the end of line comments to the previous line to make room and apply the __counted_by() attribute to the can flexible array member of struct pciefd_board. [1] commit dd06e72e68bc ("Compiler Attributes: Add __counted_by macro") Link: https://git.kernel.org/torvalds/c/dd06e72e68bc CC: Kees Cook Signed-off-by: Vincent Mailhol --- drivers/net/can/peak_canfd/peak_pciefd_main.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/can/peak_canfd/peak_pciefd_main.c b/drivers/net/can/peak_canfd/peak_pciefd_main.c index 1df3c4b54f03..636102103a88 100644 --- a/drivers/net/can/peak_canfd/peak_pciefd_main.c +++ b/drivers/net/can/peak_canfd/peak_pciefd_main.c @@ -190,8 +190,10 @@ struct pciefd_board { void __iomem *reg_base; struct pci_dev *pci_dev; int can_count; - spinlock_t cmd_lock; /* 64-bits cmds must be atomic */ - struct pciefd_can *can[]; /* array of network devices */ + /* 64-bits cmds must be atomic */ + spinlock_t cmd_lock; + /* array of network devices */ + struct pciefd_can *can[] __counted_by(can_count); }; /* supported device ids. */