From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Wed, 05 Apr 2017 23:47:27 +0200 (CEST) Received: from mail-pg0-x229.google.com ([IPv6:2607:f8b0:400e:c05::229]:34909 "EHLO mail-pg0-x229.google.com" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S23993009AbdDEVrUMR0rS (ORCPT ); Wed, 5 Apr 2017 23:47:20 +0200 Received: by mail-pg0-x229.google.com with SMTP id 81so16423206pgh.2 for ; Wed, 05 Apr 2017 14:47:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:mime-version:content-disposition; bh=2bSgS4WxdK7mwnMxbMtbAqPOBj/QMILus2MLq9x0SRI=; b=aFTwh2mBrb8h1+IhsgOepUkZ80ToeTgUfLKSm2d9cVdcUEqRVMyOf4h8w/YwgXO+FO LoM6EeSg98ltPXKWRB6H8vOEFaFv/Tp1vV+tTDbafm9FoImvX8s9U+zG2xvdGsy+xxyD vRAOL3BnOrKTC6fH+ArthqSS2FLQTnrv5yBFU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition; bh=2bSgS4WxdK7mwnMxbMtbAqPOBj/QMILus2MLq9x0SRI=; b=KsfHwzeN3b1iXhOSoEqh8j/O4EVmnmcyOsiQpKKLcjOQ3TGHMXxK9yJXNojFF4VvkI NGyznRAjYqn4uOFRvKfzL5crKX4S987VZzMs3ecZDueGILhSKyv1RYzsjCzXr1HfZtBO lM9Wub06AxGq0jfyyj+t0Wprc5IlEKZpMyizPJdOxTPbIbe+y1WWOtdTwGLqkKAQyiMa JqZLE0Y70NyIgWSUhVv0EU6AEJeRHYNdpVXjCUbZenXSP06zv01Xjt+xhMJpxuoN7WNU otaNPi21FoGmiVHhWDNcb55pGqFU7E7/M0+RPmOHzyOOTWbAsyPJYuY4DmkouZyBHke+ WPpA== X-Gm-Message-State: AFeK/H3dp8ljfn3s+5HCKfoTnQtHfYYv5DRwhx3y8QU0bEBy4KJeJtsz5TvNaDKHmcL9kd3t X-Received: by 10.99.154.9 with SMTP id o9mr6304484pge.54.1491428833980; Wed, 05 Apr 2017 14:47:13 -0700 (PDT) Received: from www.outflux.net (173-164-112-133-Oregon.hfc.comcastbusiness.net. [173.164.112.133]) by smtp.gmail.com with ESMTPSA id m69sm39213697pfc.33.2017.04.05.14.47.12 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 05 Apr 2017 14:47:13 -0700 (PDT) Date: Wed, 5 Apr 2017 14:47:11 -0700 From: Kees Cook To: Andrew Morton Cc: Tony Lindgren , Russell King , "Maciej W. Rozycki" , Ralf Baechle , Arnd Bergmann , Greg Kroah-Hartman , "Rafael J. Wysocki" , Viresh Kumar , Daniel Vetter , Jani Nikula , Sean Paul , David Airlie , Yisen Zhuang , Salil Mehta , Thomas Bogendoerfer , Jes Sorensen , Jiri Slaby , Patrice Chotard , "David S. Miller" , James Hogan , Paul Burton , Matt Redfearn , Paolo Bonzini , Ingo Molnar , Rasmus Villemoes , Mugunthan V N , Felipe Balbi , Jarod Wilson , Florian Westphal , Antonio Quartulli , Dmitry Torokhov , Kejian Yan , Daode Huang , Qianqian Xie , Philippe Reynes , Colin Ian King , Eric Dumazet , Christian Gromm , Andrey Shvetsov , Jason Litzinger , WANG Cong , linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-mips@linux-mips.org, linux-pm@vger.kernel.org, dri-devel@lists.freedesktop.org, netdev@vger.kernel.org, linux-hippi@sunsite.dk, devel@driverdev.osuosl.org, kernel@stlinux.com, linux-serial@vger.kernel.org, linux-decnet-user@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: [PATCH] format-security: move static strings to const Message-ID: <20170405214711.GA5711@beast> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 57571 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: keescook@chromium.org Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips While examining output from trial builds with -Wformat-security enabled, many strings were found that should be defined as "const", or as a char array instead of char pointer. This makes some static analysis easier, by producing fewer false positives. As these are all trivial changes, it seemed best to put them all in a single patch rather than chopping them up per maintainer. Signed-off-by: Kees Cook --- arch/arm/mach-omap2/board-n8x0.c | 2 +- arch/mips/dec/prom/init.c | 6 +++--- arch/mips/kernel/traps.c | 4 ++-- drivers/char/dsp56k.c | 2 +- drivers/cpufreq/powernow-k8.c | 3 ++- drivers/gpu/drm/drm_fb_helper.c | 2 +- drivers/net/ethernet/amd/atarilance.c | 4 ++-- drivers/net/ethernet/amd/declance.c | 2 +- drivers/net/ethernet/amd/sun3lance.c | 3 ++- drivers/net/ethernet/cirrus/mac89x0.c | 2 +- drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h | 2 +- drivers/net/ethernet/natsemi/sonic.h | 2 +- drivers/net/ethernet/toshiba/tc35815.c | 2 +- drivers/net/fddi/defxx.c | 2 +- drivers/net/hippi/rrunner.c | 3 ++- drivers/staging/most/mostcore/core.c | 2 +- drivers/tty/n_hdlc.c | 10 +++++----- drivers/tty/serial/st-asc.c | 2 +- net/decnet/af_decnet.c | 3 ++- 19 files changed, 31 insertions(+), 27 deletions(-) diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c index 6b6fda65fb3b..91272db09fa3 100644 --- a/arch/arm/mach-omap2/board-n8x0.c +++ b/arch/arm/mach-omap2/board-n8x0.c @@ -117,7 +117,7 @@ static struct musb_hdrc_platform_data tusb_data = { static void __init n8x0_usb_init(void) { int ret = 0; - static char announce[] __initdata = KERN_INFO "TUSB 6010\n"; + static const char announce[] __initconst = KERN_INFO "TUSB 6010\n"; /* PM companion chip power control pin */ ret = gpio_request_one(TUSB6010_GPIO_ENABLE, GPIOF_OUT_INIT_LOW, diff --git a/arch/mips/dec/prom/init.c b/arch/mips/dec/prom/init.c index 4e1761e0a09a..d88eb7a6662b 100644 --- a/arch/mips/dec/prom/init.c +++ b/arch/mips/dec/prom/init.c @@ -88,7 +88,7 @@ void __init which_prom(s32 magic, s32 *prom_vec) void __init prom_init(void) { extern void dec_machine_halt(void); - static char cpu_msg[] __initdata = + static const char cpu_msg[] __initconst = "Sorry, this kernel is compiled for a wrong CPU type!\n"; s32 argc = fw_arg0; s32 *argv = (void *)fw_arg1; @@ -111,7 +111,7 @@ void __init prom_init(void) #if defined(CONFIG_CPU_R3000) if ((current_cpu_type() == CPU_R4000SC) || (current_cpu_type() == CPU_R4400SC)) { - static char r4k_msg[] __initdata = + static const char r4k_msg[] __initconst = "Please recompile with \"CONFIG_CPU_R4x00 = y\".\n"; printk(cpu_msg); printk(r4k_msg); @@ -122,7 +122,7 @@ void __init prom_init(void) #if defined(CONFIG_CPU_R4X00) if ((current_cpu_type() == CPU_R3000) || (current_cpu_type() == CPU_R3000A)) { - static char r3k_msg[] __initdata = + static const char r3k_msg[] __initconst = "Please recompile with \"CONFIG_CPU_R3000 = y\".\n"; printk(cpu_msg); printk(r3k_msg); diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index c7d17cfb32f6..2c717db50380 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -2256,8 +2256,8 @@ void set_handler(unsigned long offset, void *addr, unsigned long size) local_flush_icache_range(ebase + offset, ebase + offset + size); } -static char panic_null_cerr[] = - "Trying to set NULL cache error exception handler"; +static const char panic_null_cerr[] = + "Trying to set NULL cache error exception handler\n"; /* * Install uncached CPU exception handler. diff --git a/drivers/char/dsp56k.c b/drivers/char/dsp56k.c index 50aa9ba91f25..0d7b577e0ff0 100644 --- a/drivers/char/dsp56k.c +++ b/drivers/char/dsp56k.c @@ -489,7 +489,7 @@ static const struct file_operations dsp56k_fops = { /****** Init and module functions ******/ -static char banner[] __initdata = KERN_INFO "DSP56k driver installed\n"; +static const char banner[] __initconst = KERN_INFO "DSP56k driver installed\n"; static int __init dsp56k_init_driver(void) { diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c index 0b5bf135b090..062d71434e47 100644 --- a/drivers/cpufreq/powernow-k8.c +++ b/drivers/cpufreq/powernow-k8.c @@ -1171,7 +1171,8 @@ static struct cpufreq_driver cpufreq_amd64_driver = { static void __request_acpi_cpufreq(void) { - const char *cur_drv, *drv = "acpi-cpufreq"; + const char drv[] = "acpi-cpufreq"; + const char *cur_drv; cur_drv = cpufreq_get_current_driver(); if (!cur_drv) diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index f6d4d9700734..1ff9d5912b83 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -2331,7 +2331,7 @@ EXPORT_SYMBOL(drm_fb_helper_hotplug_event); int __init drm_fb_helper_modinit(void) { #if defined(CONFIG_FRAMEBUFFER_CONSOLE_MODULE) && !defined(CONFIG_EXPERT) - const char *name = "fbcon"; + const char name[] = "fbcon"; struct module *fbcon; mutex_lock(&module_mutex); diff --git a/drivers/net/ethernet/amd/atarilance.c b/drivers/net/ethernet/amd/atarilance.c index 796c37a5bbde..c5b81268c284 100644 --- a/drivers/net/ethernet/amd/atarilance.c +++ b/drivers/net/ethernet/amd/atarilance.c @@ -42,8 +42,8 @@ */ -static char version[] = "atarilance.c: v1.3 04/04/96 " - "Roman.Hodek@informatik.uni-erlangen.de\n"; +static const char version[] = "atarilance.c: v1.3 04/04/96 " + "Roman.Hodek@informatik.uni-erlangen.de\n"; #include #include diff --git a/drivers/net/ethernet/amd/declance.c b/drivers/net/ethernet/amd/declance.c index 6c98901f1b89..82cc81385033 100644 --- a/drivers/net/ethernet/amd/declance.c +++ b/drivers/net/ethernet/amd/declance.c @@ -72,7 +72,7 @@ #include #include -static char version[] = +static const char version[] = "declance.c: v0.011 by Linux MIPS DECstation task force\n"; MODULE_AUTHOR("Linux MIPS DECstation task force"); diff --git a/drivers/net/ethernet/amd/sun3lance.c b/drivers/net/ethernet/amd/sun3lance.c index 12bb4f1489fc..77b1db267730 100644 --- a/drivers/net/ethernet/amd/sun3lance.c +++ b/drivers/net/ethernet/amd/sun3lance.c @@ -21,7 +21,8 @@ */ -static char *version = "sun3lance.c: v1.2 1/12/2001 Sam Creasey (sammy@sammy.net)\n"; +static const char version[] = +"sun3lance.c: v1.2 1/12/2001 Sam Creasey (sammy@sammy.net)\n"; #include #include diff --git a/drivers/net/ethernet/cirrus/mac89x0.c b/drivers/net/ethernet/cirrus/mac89x0.c index b600fbbbf679..f910f0f386d6 100644 --- a/drivers/net/ethernet/cirrus/mac89x0.c +++ b/drivers/net/ethernet/cirrus/mac89x0.c @@ -56,7 +56,7 @@ local_irq_{dis,en}able() */ -static char *version = +static const char version[] = "cs89x0.c:v1.02 11/26/96 Russell Nelson \n"; /* ======================= configure the driver here ======================= */ diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h index 2bb3d1e93c64..1951b65c7a57 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h @@ -407,7 +407,7 @@ struct mac_driver { }; struct mac_stats_string { - char desc[ETH_GSTRING_LEN]; + const char desc[ETH_GSTRING_LEN]; unsigned long offset; }; diff --git a/drivers/net/ethernet/natsemi/sonic.h b/drivers/net/ethernet/natsemi/sonic.h index 07091dd27e5d..7b0a8db57af9 100644 --- a/drivers/net/ethernet/natsemi/sonic.h +++ b/drivers/net/ethernet/natsemi/sonic.h @@ -444,7 +444,7 @@ static inline __u16 sonic_rra_get(struct net_device* dev, int entry, (entry * SIZEOF_SONIC_RR) + offset); } -static const char *version = +static const char version[] = "sonic.c:v0.92 20.9.98 tsbogend@alpha.franken.de\n"; #endif /* SONIC_H */ diff --git a/drivers/net/ethernet/toshiba/tc35815.c b/drivers/net/ethernet/toshiba/tc35815.c index a45f98fa4aa7..ad6db05b97d6 100644 --- a/drivers/net/ethernet/toshiba/tc35815.c +++ b/drivers/net/ethernet/toshiba/tc35815.c @@ -23,7 +23,7 @@ */ #define DRV_VERSION "1.39" -static const char *version = "tc35815.c:v" DRV_VERSION "\n"; +static const char version[] = "tc35815.c:v" DRV_VERSION "\n"; #define MODNAME "tc35815" #include diff --git a/drivers/net/fddi/defxx.c b/drivers/net/fddi/defxx.c index b0de8ecd7fe8..f4a816cf012a 100644 --- a/drivers/net/fddi/defxx.c +++ b/drivers/net/fddi/defxx.c @@ -228,7 +228,7 @@ #define DRV_VERSION "v1.11" #define DRV_RELDATE "2014/07/01" -static char version[] = +static const char version[] = DRV_NAME ": " DRV_VERSION " " DRV_RELDATE " Lawrence V. Stefani and others\n"; diff --git a/drivers/net/hippi/rrunner.c b/drivers/net/hippi/rrunner.c index dd7fc6659ad4..9b0d6148e994 100644 --- a/drivers/net/hippi/rrunner.c +++ b/drivers/net/hippi/rrunner.c @@ -60,7 +60,8 @@ MODULE_AUTHOR("Jes Sorensen "); MODULE_DESCRIPTION("Essential RoadRunner HIPPI driver"); MODULE_LICENSE("GPL"); -static char version[] = "rrunner.c: v0.50 11/11/2002 Jes Sorensen (jes@wildopensource.com)\n"; +static const char version[] = +"rrunner.c: v0.50 11/11/2002 Jes Sorensen (jes@wildopensource.com)\n"; static const struct net_device_ops rr_netdev_ops = { diff --git a/drivers/staging/most/mostcore/core.c b/drivers/staging/most/mostcore/core.c index 191404bc5906..892aae6e9c9a 100644 --- a/drivers/staging/most/mostcore/core.c +++ b/drivers/staging/most/mostcore/core.c @@ -82,7 +82,7 @@ struct most_inst_obj { static const struct { int most_ch_data_type; - char *name; + const char *name; } ch_data_type[] = { { MOST_CH_CONTROL, "control\n" }, { MOST_CH_ASYNC, "async\n" }, diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c index e94aea8c0d05..7b2a466616d6 100644 --- a/drivers/tty/n_hdlc.c +++ b/drivers/tty/n_hdlc.c @@ -939,11 +939,11 @@ static struct n_hdlc_buf *n_hdlc_buf_get(struct n_hdlc_buf_list *buf_list) return buf; } /* end of n_hdlc_buf_get() */ -static char hdlc_banner[] __initdata = +static const char hdlc_banner[] __initconst = KERN_INFO "HDLC line discipline maxframe=%u\n"; -static char hdlc_register_ok[] __initdata = +static const char hdlc_register_ok[] __initconst = KERN_INFO "N_HDLC line discipline registered.\n"; -static char hdlc_register_fail[] __initdata = +static const char hdlc_register_fail[] __initconst = KERN_ERR "error registering line discipline: %d\n"; static int __init n_hdlc_init(void) @@ -968,9 +968,9 @@ static int __init n_hdlc_init(void) } /* end of init_module() */ -static char hdlc_unregister_ok[] __exitdata = +static const char hdlc_unregister_ok[] __exitdata = KERN_INFO "N_HDLC: line discipline unregistered\n"; -static char hdlc_unregister_fail[] __exitdata = +static const char hdlc_unregister_fail[] __exitdata = KERN_ERR "N_HDLC: can't unregister line discipline (err = %d)\n"; static void __exit n_hdlc_exit(void) diff --git a/drivers/tty/serial/st-asc.c b/drivers/tty/serial/st-asc.c index bcf1d33e6ffe..ef9f47847f59 100644 --- a/drivers/tty/serial/st-asc.c +++ b/drivers/tty/serial/st-asc.c @@ -985,7 +985,7 @@ static struct platform_driver asc_serial_driver = { static int __init asc_init(void) { int ret; - static char banner[] __initdata = + static const char banner[] __initconst = KERN_INFO "STMicroelectronics ASC driver initialized\n"; printk(banner); diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c index e6e79eda9763..c6ed5e9502e9 100644 --- a/net/decnet/af_decnet.c +++ b/net/decnet/af_decnet.c @@ -2359,7 +2359,8 @@ MODULE_AUTHOR("Linux DECnet Project Team"); MODULE_LICENSE("GPL"); MODULE_ALIAS_NETPROTO(PF_DECnet); -static char banner[] __initdata = KERN_INFO "NET4: DECnet for Linux: V.2.5.68s (C) 1995-2003 Linux DECnet Project Team\n"; +static const char banner[] __initconst = KERN_INFO +"NET4: DECnet for Linux: V.2.5.68s (C) 1995-2003 Linux DECnet Project Team\n"; static int __init decnet_init(void) { -- 2.7.4 -- Kees Cook Pixel Security