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 X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BF671C7618E for ; Tue, 23 Jul 2019 10:11:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8ACD720828 for ; Tue, 23 Jul 2019 10:11:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563876710; bh=1u1000qFUjRpMBu/p9CPlP+F7B1Bp/Z0SkRAhfBMzaE=; h=Subject:To:Cc:From:Date:List-ID:From; b=eBw7vH3vzB/CEr14kj5O6rLxgv/qLw+IxD46dLrR3KbGPQg+3BttMl7uocjccNbI0 Yae5UO+75/G7pOvWepT2fqyWYTznVBhLiAiuxhTXC9xj2eSvLvo5wfF2psk3MiUB3V 4HnT2Tj04dZuPrkVcmZBpQXtQaaTC9wejb718fVs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732933AbfGWKLu (ORCPT ); Tue, 23 Jul 2019 06:11:50 -0400 Received: from wout2-smtp.messagingengine.com ([64.147.123.25]:35093 "EHLO wout2-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731433AbfGWKLu (ORCPT ); Tue, 23 Jul 2019 06:11:50 -0400 Received: from compute6.internal (compute6.nyi.internal [10.202.2.46]) by mailout.west.internal (Postfix) with ESMTP id 135355D2; Tue, 23 Jul 2019 06:11:49 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute6.internal (MEProxy); Tue, 23 Jul 2019 06:11:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:message-id:mime-version:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; bh=NOFEA4 YYU3rRkRs0AC3CZ/dgIxvVZbHqpqcKS6jUP94=; b=MC0RGptQdcVo1W3es/WQsm +VZ+CavDEJMCs9OYVJXMVBRtLR18EMQamM9JnQIHAhe0WhwYVHhyGrdp98nhcake 0Otc00CCuOPT13o6qdpY+Q9leZDUwmjKJhpfzSX8CCNnsypXQTBRoQuKH2hHwimp SLBJsjZeUb7vnPqdZX3NN4tQXDfnj67YPBiFCsLb85XsQcjoCks6hEiw/bNTf9YJ eVvAGkgVkuljArjeJl8xau3NojlIBlXshsNliHpIFMQTyPibztka8B+nYcmuj6zb taeeDk4LtP4R+RiSg362uJf/fNtfnvNHJEVauCSXc0VEiyCtivpSMeKKx7fbC1Eg == X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduvddrjeekgddvhecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecunecujfgurhepuffvhfffkfggtgfgsehtkeertddttd ejnecuhfhrohhmpeeoghhrvghgkhhhsehlihhnuhigfhhouhhnuggrthhiohhnrdhorhhg qeenucfkphepkeefrdekiedrkeelrddutdejnecurfgrrhgrmhepmhgrihhlfhhrohhmpe hgrhgvgheskhhrohgrhhdrtghomhenucevlhhushhtvghrufhiiigvpedu X-ME-Proxy: Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) by mail.messagingengine.com (Postfix) with ESMTPA id 297F1380074; Tue, 23 Jul 2019 06:11:48 -0400 (EDT) Subject: FAILED: patch "[PATCH] kconfig: fix missing choice values in auto.conf" failed to apply to 4.19-stable tree To: yamada.masahiro@socionext.com, joonas.kylmala@iki.fi, stable@vger.kernel.org Cc: From: Date: Tue, 23 Jul 2019 12:11:45 +0200 Message-ID: <156387670510932@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 8e2442a5f86e1f77b86401fce274a7f622740bc4 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Fri, 12 Jul 2019 15:07:09 +0900 Subject: [PATCH] kconfig: fix missing choice values in auto.conf MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Since commit 00c864f8903d ("kconfig: allow all config targets to write auto.conf if missing"), Kconfig creates include/config/auto.conf in the defconfig stage when it is missing. Joonas Kylmälä reported incorrect auto.conf generation under some circumstances. To reproduce it, apply the following diff: | --- a/arch/arm/configs/imx_v6_v7_defconfig | +++ b/arch/arm/configs/imx_v6_v7_defconfig | @@ -345,14 +345,7 @@ CONFIG_USB_CONFIGFS_F_MIDI=y | CONFIG_USB_CONFIGFS_F_HID=y | CONFIG_USB_CONFIGFS_F_UVC=y | CONFIG_USB_CONFIGFS_F_PRINTER=y | -CONFIG_USB_ZERO=m | -CONFIG_USB_AUDIO=m | -CONFIG_USB_ETH=m | -CONFIG_USB_G_NCM=m | -CONFIG_USB_GADGETFS=m | -CONFIG_USB_FUNCTIONFS=m | -CONFIG_USB_MASS_STORAGE=m | -CONFIG_USB_G_SERIAL=m | +CONFIG_USB_FUNCTIONFS=y | CONFIG_MMC=y | CONFIG_MMC_SDHCI=y | CONFIG_MMC_SDHCI_PLTFM=y And then, run: $ make ARCH=arm mrproper imx_v6_v7_defconfig You will see CONFIG_USB_FUNCTIONFS=y is correctly contained in the .config, but not in the auto.conf. Please note drivers/usb/gadget/legacy/Kconfig is included from a choice block in drivers/usb/gadget/Kconfig. So USB_FUNCTIONFS is a choice value. This is probably a similar situation described in commit beaaddb62540 ("kconfig: tests: test defconfig when two choices interact"). When sym_calc_choice() is called, the choice symbol forgets the SYMBOL_DEF_USER unless all of its choice values are explicitly set by the user. The choice symbol is given just one chance to recall it because set_all_choice_values() is called if SYMBOL_NEED_SET_CHOICE_VALUES is set. When sym_calc_choice() is called again, the choice symbol forgets it forever, since SYMBOL_NEED_SET_CHOICE_VALUES is a one-time aid. Hence, we cannot call sym_clear_all_valid() again and again. It is crazy to repeat set and unset of internal flags. However, we cannot simply get rid of "sym->flags &= flags | ~SYMBOL_DEF_USER;" Doing so would re-introduce the problem solved by commit 5d09598d488f ("kconfig: fix new choices being skipped upon config update"). To work around the issue, conf_write_autoconf() stopped calling sym_clear_all_valid(). conf_write() must be changed accordingly. Currently, it clears SYMBOL_WRITE after the symbol is written into the .config file. This is needed to prevent it from writing the same symbol multiple times in case the symbol is declared in two or more locations. I added the new flag SYMBOL_WRITTEN, to track the symbols that have been written. Anyway, this is a cheesy workaround in order to suppress the issue as far as defconfig is concerned. Handling of choices is totally broken. sym_clear_all_valid() is called every time a user touches a symbol from the GUI interface. To reproduce it, just add a new symbol drivers/usb/gadget/legacy/Kconfig, then touch around unrelated symbols from menuconfig. USB_FUNCTIONFS will disappear from the .config file. I added the Fixes tag since it is more fatal than before. But, this has been broken since long long time before, and still it is. We should take a closer look to fix this correctly somehow. Fixes: 00c864f8903d ("kconfig: allow all config targets to write auto.conf if missing") Cc: linux-stable # 4.19+ Reported-by: Joonas Kylmälä Signed-off-by: Masahiro Yamada Tested-by: Joonas Kylmälä diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c index 501fdcc5e999..1134892599da 100644 --- a/scripts/kconfig/confdata.c +++ b/scripts/kconfig/confdata.c @@ -895,7 +895,8 @@ int conf_write(const char *name) "# %s\n" "#\n", str); need_newline = false; - } else if (!(sym->flags & SYMBOL_CHOICE)) { + } else if (!(sym->flags & SYMBOL_CHOICE) && + !(sym->flags & SYMBOL_WRITTEN)) { sym_calc_value(sym); if (!(sym->flags & SYMBOL_WRITE)) goto next; @@ -903,7 +904,7 @@ int conf_write(const char *name) fprintf(out, "\n"); need_newline = false; } - sym->flags &= ~SYMBOL_WRITE; + sym->flags |= SYMBOL_WRITTEN; conf_write_symbol(out, sym, &kconfig_printer_cb, NULL); } @@ -1063,8 +1064,6 @@ int conf_write_autoconf(int overwrite) if (!overwrite && is_present(autoconf_name)) return 0; - sym_clear_all_valid(); - conf_write_dep("include/config/auto.conf.cmd"); if (conf_touch_deps()) diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h index 8dde65bc3165..017843c9a4f4 100644 --- a/scripts/kconfig/expr.h +++ b/scripts/kconfig/expr.h @@ -141,6 +141,7 @@ struct symbol { #define SYMBOL_OPTIONAL 0x0100 /* choice is optional - values can be 'n' */ #define SYMBOL_WRITE 0x0200 /* write symbol to file (KCONFIG_CONFIG) */ #define SYMBOL_CHANGED 0x0400 /* ? */ +#define SYMBOL_WRITTEN 0x0800 /* track info to avoid double-write to .config */ #define SYMBOL_NO_WRITE 0x1000 /* Symbol for internal use only; it will not be written */ #define SYMBOL_CHECKED 0x2000 /* used during dependency checking */ #define SYMBOL_WARNED 0x8000 /* warning has been issued */