Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965517AbaDJIFJ (ORCPT ); Thu, 10 Apr 2014 04:05:09 -0400 Received: from mail-ig0-f182.google.com ([209.85.213.182]:34461 "EHLO mail-ig0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934697AbaDJIEz convert rfc822-to-8bit (ORCPT ); Thu, 10 Apr 2014 04:04:55 -0400 MIME-Version: 1.0 In-Reply-To: <20140409160108.GU16119@n2100.arm.linux.org.uk> References: <1386922149-4561-1-git-send-email-jonas.jensen@gmail.com> <20140409151326.GY29751@pengutronix.de> <20140409152711.GT16119@n2100.arm.linux.org.uk> <5844640.QRALKyBQaa@wuerfel> <20140409160108.GU16119@n2100.arm.linux.org.uk> Date: Thu, 10 Apr 2014 10:04:54 +0200 Message-ID: Subject: Re: [PATCH] ARM: reinsert ARCH_MULTI_V4 Kconfig option From: Jonas Jensen To: Russell King - ARM Linux Cc: Arnd Bergmann , =?UTF-8?Q?Uwe_Kleine=2DK=C3=B6nig?= , "linux-arm-kernel@lists.infradead.org" , "arm@kernel.org" , "linux-kernel@vger.kernel.org" , ulli.kroll@googlemail.com, Olof Johansson Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 9 April 2014 18:01, Russell King - ARM Linux wrote: > It would be useful to see the register state from the undefined > instruction exception. That needs this patch, CONFIG_DEBUG_USER in the > kernel config enabled, and user_debug=1 passed on the kernel command > line. I have done two tests, one with user_debug=1, and one with user_debug=31, since I expected more information on user_debug=1. As Arnd pointed out, this is booting into a non-thumb userspace, built with gcc version 4.9.0 20140316 and buildroot 2014.02. Buildroot config: https://code.google.com/p/mkrom-uc7112lx/source/browse/configs/buildroot-2014-02_eglibc-2.17_binutils-2.22_external-toolchain.config Results: user_debug=1 ( https://bitbucket.org/Kasreyn/linux-next/commits/3a32b929d7a399751c6397f0c973b356c6c9a71d ): Uncompressing Linux... done, booting the kernel. [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 3.14.0-next-20140409+ (i@Ildjarn) (gcc version 4.9.0 20140316 (experimental) (crosstool-NG 1.19.0) ) #2431 PREEMPT Thu Apr 10 09:12:35 CEST 2014 .. [ 0.000000] Kernel command line: console=ttyS0,115200n8 earlyprintk root=/dev/mmcblk0p1 rw rootwait debug user_debug=1 .. [ 2.700000] Freeing unused kernel memory: 104K (c02f4000 - c030e000) [ 3.380000] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b [ 3.380000] [ 3.380000] CPU: 0 PID: 1 Comm: init Not tainted 3.14.0-next-20140409+ #2431 [ 3.380000] [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [ 3.380000] [] (show_stack) from [] (panic+0x98/0x1f4) [ 3.380000] [] (panic) from [] (do_exit+0x908/0x938) [ 3.380000] [] (do_exit) from [] (do_group_exit+0x4c/0xe8) [ 3.380000] [] (do_group_exit) from [] (get_signal_to_deliver+0x218/0x5f0) [ 3.380000] [] (get_signal_to_deliver) from [] (do_signal+0x100/0x48c) [ 3.380000] [] (do_signal) from [] (do_work_pending+0xd4/0xe4) [ 3.380000] [] (do_work_pending) from [] (work_pending+0xc/0x20) [ 3.380000] Rebooting in 10 seconds.. user_debug=31 ( https://bitbucket.org/Kasreyn/linux-next/commits/8ed2db951baca29c6254de328765873fe5457727 ): [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 3.14.0-next-20140409+ (i@Ildjarn) (gcc version 4.9.0 20140316 (experimental) (crosstool-NG 1.19.0) ) #2431 PREEMPT Thu Apr 10 09:12:35 CEST 2014 [ 0.000000] CPU: FA526 [66015261] revision 1 (ARMv4), cr=0000397f [ 0.000000] CPU: VIVT data cache, VIVT instruction cache [ 0.000000] Machine model: MOXA UC-7112-LX [ 0.000000] bootconsole [earlycon0] enabled [ 0.000000] Memory policy: Data cache writeback [ 0.000000] On node 0 totalpages: 8192 [ 0.000000] free_area_init_node: node 0, pgdat c0322324, node_mem_map c1fba000 [ 0.000000] Normal zone: 64 pages used for memmap [ 0.000000] Normal zone: 0 pages reserved [ 0.000000] Normal zone: 8192 pages, LIFO batch:0 [ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768 [ 0.000000] pcpu-alloc: [0] 0 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 8128 [ 0.000000] Kernel command line: console=ttyS0,115200n8 earlyprintk root=/dev/mmcblk0p1 rw rootwait debug user_debug=31 [ 0.000000] PID hash table entries: 128 (order: -3, 512 bytes) [ 0.000000] Dentry cache hash table entries: 4096 (order: 2, 16384 bytes) [ 0.000000] Inode-cache hash table entries: 2048 (order: 1, 8192 bytes) [ 0.000000] Memory: 29092K/32768K available (2542K kernel code, 74K rwdata, 448K rodata, 104K init, 116K bss, 3676K reserved) [ 0.000000] Virtual kernel memory layout: [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB) [ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB) [ 0.000000] vmalloc : 0xc2800000 - 0xff000000 ( 968 MB) [ 0.000000] lowmem : 0xc0000000 - 0xc2000000 ( 32 MB) [ 0.000000] .text : 0xc0008000 - 0xc02f3d80 (2992 kB) [ 0.000000] .init : 0xc02f4000 - 0xc030e36c ( 105 kB) [ 0.000000] .data : 0xc0310000 - 0xc0322aa0 ( 75 kB) [ 0.000000] .bss : 0xc0322aac - 0xc033fbc0 ( 117 kB) [ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [ 0.000000] Preemptible hierarchical RCU implementation. [ 0.000000] NR_IRQS:16 nr_irqs:16 16 [ 0.000000] sched_clock: 32 bits at 100 Hz, resolution 10000000ns, wraps every 21474836480000000ns [ 0.010000] Calibrating delay loop... 146.84 BogoMIPS (lpj=734208) [ 0.100000] pid_max: default: 4096 minimum: 301 [ 0.100000] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.110000] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.120000] CPU: Testing write buffer coherency: ok [ 0.130000] Setting up static identity map for 0x26e308 - 0x26e390 [ 0.150000] devtmpfs: initialized [ 0.160000] NET: Registered protocol family 16 [ 0.180000] DMA: preallocated 256 KiB pool for atomic coherent allocations [ 0.330000] Switched to clocksource moxart_timer [ 0.370000] NET: Registered protocol family 2 [ 0.390000] TCP established hash table entries: 1024 (order: 0, 4096 bytes) [ 0.410000] TCP bind hash table entries: 1024 (order: 0, 4096 bytes) [ 0.410000] TCP: Hash tables configured (established 1024 bind 1024) [ 0.430000] TCP: reno registered [ 0.430000] UDP hash table entries: 256 (order: 0, 4096 bytes) [ 0.450000] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes) [ 0.470000] NET: Registered protocol family 1 [ 0.490000] futex hash table entries: 16 (order: -5, 192 bytes) [ 0.590000] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc. [ 0.610000] msgmni has been set to 56 [ 0.610000] io scheduler noop registered [ 0.640000] io scheduler cfq registered (default) [ 0.640000] gpiochip_add: registered GPIOs 0 to 31 on device: moxart-gpio [ 0.660000] Serial: 8250/16550 driver, 3 ports, IRQ sharing enabled [ 0.690000] console [ttyS0] disabled [ 0.690000] 98200000.uart: ttyS0 at MMIO 0x98200000 (irq = 21, base_baud = 921600) is a 16550A [ 0.700000] console [ttyS0] enabled [ 0.700000] console [ttyS0] enabled [ 0.710000] bootconsole [earlycon0] disabled [ 0.710000] bootconsole [earlycon0] disabled [ 0.720000] MOXA Smartio/Industio family driver version 2.0.5 [ 0.730000] mxser: found MOXA UC-7112-LX board (CAP=0x0) [ 0.740000] ttyMX0 at I/O 0xf9820040 (irq = 21, base_baud = 0) is a 16550A [ 0.750000] ttyMX1 at I/O 0xf9820060 (irq = 21, base_baud = 0) is a 16550A [ 0.760000] mxser: mxser_initbrd success IRQ=21 max baud=921600 bps [ 0.820000] loop: module loaded [ 0.860000] 80000000.flash: Found 1 x16 devices at 0x0 in 16-bit bank. Manufacturer ID 0x000089 Chip ID 0x000018 [ 0.870000] Intel/Sharp Extended Query Table at 0x0031 [ 0.880000] Intel/Sharp Extended Query Table at 0x0031 [ 0.890000] Using buffer write method [ 0.890000] cfi_cmdset_0001: Erase suspend on write enabled [ 0.900000] erase region 0: offset=0x0,size=0x20000,blocks=128 [ 0.900000] 4 ofpart partitions found on MTD device 80000000.flash [ 0.910000] Creating 4 MTD partitions on "80000000.flash": [ 0.910000] 0x000000000000-0x000000040000 : "bootloader" [ 0.930000] 0x000000040000-0x000000200000 : "linux kernel" [ 0.950000] 0x000000200000-0x000000a00000 : "root filesystem" [ 0.970000] 0x000000a00000-0x000001000000 : "user filesystem" [ 1.600000] libphy: MOXA ART Ethernet MII: probed [ 2.220000] libphy: MOXA ART Ethernet MII: probed [ 2.260000] moxart-ethernet 90900000.ethernet eth0: moxart_mac_probe: IRQ=19 address=00:00:00:00:00:00 [ 2.270000] moxart-ethernet 90900000.ethernet eth0: generated random MAC address a6:07:0d:68:31:c4 [ 2.280000] moxart-ethernet 92000000.ethernet eth1: moxart_mac_probe: IRQ=20 address=00:00:00:00:00:00 [ 2.300000] moxart-ethernet 92000000.ethernet eth1: generated random MAC address 5a:e7:48:87:f5:5e [ 2.310000] of_get_named_gpiod_flags exited with status 0 [ 2.320000] input: gpio_keys_polled.2 as /devices/gpio_keys_polled.2/input/input0 [ 2.330000] evbug: Connected device: input0 (gpio_keys_polled.2 at gpio-keys-polled/input0) [ 2.340000] of_get_named_gpiod_flags exited with status 0 [ 2.350000] of_get_named_gpiod_flags exited with status 0 [ 2.350000] of_get_named_gpiod_flags exited with status 0 [ 2.360000] moxart-rtc rtc.0: rtc core: registered rtc.0 as rtc0 [ 2.380000] of_get_named_gpiod_flags: can't parse gpios property of node '/soc/mmc@98e00000[0]' [ 2.390000] of_get_named_gpiod_flags: can't parse gpios property of node '/soc/mmc@98e00000[0]' [ 2.450000] of_get_named_gpiod_flags exited with status 0 [ 2.450000] of_get_named_gpiod_flags exited with status 0 [ 2.460000] TCP: cubic registered [ 2.470000] NET: Registered protocol family 17 [ 2.490000] console [netcon0] enabled [ 2.490000] netconsole: network logging started [ 2.500000] moxart-rtc rtc.0: setting system clock to 2014-04-10 07:16:34 UTC (1397114194) [ 2.510000] Waiting for root device /dev/mmcblk0p1... [ 2.520000] mmc0: new SDHC card at address 0fd0 [ 2.530000] mmcblk0: mmc0:0fd0 SD04G 3.69 GiB [ 2.550000] mmcblk0: p1 [ 2.650000] kjournald starting. Commit interval 5 seconds [ 2.650000] EXT3-fs (mmcblk0p1): warning: maximal mount count reached, running e2fsck is recommended [ 2.680000] EXT3-fs (mmcblk0p1): using internal journal [ 2.680000] EXT3-fs (mmcblk0p1): recovery complete [ 2.690000] EXT3-fs (mmcblk0p1): mounted filesystem with ordered data mode [ 2.690000] VFS: Mounted root (ext3 filesystem) on device 179:1. [ 2.710000] devtmpfs: mounted [ 2.720000] Freeing unused kernel memory: 104K (c02f4000 - c030e000) [ 3.390000] init: unhandled page fault (11) at 0xffff1007, code 0x01f [ 3.400000] pgd = c1a24000 [ 3.400000] [ffff1007] *pgd=01ffd831, *pte=01fff0cf, *ppte=01fff00e [ 3.400000] [ 3.410000] CPU: 0 PID: 1 Comm: init Not tainted 3.14.0-next-20140409+ #2431 [ 3.420000] task: c1828000 ti: c182c000 task.ti: c182c000 [ 3.420000] PC is at 0xb6df2478 [ 3.430000] LR is at 0x1c [ 3.430000] pc : [] lr : [<0000001c>] psr: 60000010 [ 3.430000] sp : bee48eb8 ip : bee48fe0 fp : 00000000 [ 3.440000] r10: 00000000 r9 : b6f34958 r8 : bee48f1c [ 3.450000] r7 : bee48f14 r6 : bee48f1c r5 : 00000001 r4 : b6f08000 [ 3.460000] r3 : 00000008 r2 : bee48fd4 r1 : 00115c40 r0 : ffff0fff [ 3.470000] Flags: nZCv IRQs on FIQs on Mode USER_32 ISA ARM Segment user [ 3.480000] Control: 0000397f Table: 01a24000 DAC: 00000015 [ 3.490000] CPU: 0 PID: 1 Comm: init Not tainted 3.14.0-next-20140409+ #2431 [ 3.500000] [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [ 3.510000] [] (show_stack) from [] (__do_user_fault+0xbc/0xc8) [ 3.520000] [] (__do_user_fault) from [] (do_page_fault+0x264/0x29c) [ 3.530000] [] (do_page_fault) from [] (do_DataAbort+0x34/0x98) [ 3.540000] [] (do_DataAbort) from [] (__dabt_usr+0x44/0x60) [ 3.550000] Exception stack(0xc182dfb0 to 0xc182dff8) [ 3.550000] dfa0: ffff0fff 00115c40 bee48fd4 00000008 [ 3.560000] dfc0: b6f08000 00000001 bee48f1c bee48f14 bee48f1c b6f34958 00000000 00000000 [ 3.570000] dfe0: bee48fe0 bee48eb8 0000001c b6df2478 60000010 ffffffff [ 3.580000] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b [ 3.580000] [ 3.580000] CPU: 0 PID: 1 Comm: init Not tainted 3.14.0-next-20140409+ #2431 [ 3.580000] [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [ 3.580000] [] (show_stack) from [] (panic+0x98/0x1f4) [ 3.580000] [] (panic) from [] (do_exit+0x908/0x938) [ 3.580000] [] (do_exit) from [] (do_group_exit+0x4c/0xe8) [ 3.580000] [] (do_group_exit) from [] (get_signal_to_deliver+0x218/0x5f0) [ 3.580000] [] (get_signal_to_deliver) from [] (do_signal+0x100/0x48c) [ 3.580000] [] (do_signal) from [] (do_work_pending+0xd4/0xe4) [ 3.580000] [] (do_work_pending) from [] (work_pending+0xc/0x20) [ 3.580000] Rebooting in 10 seconds.. defconfig: # CONFIG_LOCALVERSION_AUTO is not set CONFIG_SYSVIPC=y # CONFIG_USELIB is not set CONFIG_NO_HZ_IDLE=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_LOG_BUF_SHIFT=16 # CONFIG_UID16 is not set # CONFIG_ELF_CORE is not set # CONFIG_BASE_FULL is not set # CONFIG_EVENTFD is not set # CONFIG_AIO is not set CONFIG_EMBEDDED=y # CONFIG_VM_EVENT_COUNTERS is not set # CONFIG_SLUB_DEBUG is not set # CONFIG_COMPAT_BRK is not set # CONFIG_LBDAF is not set # CONFIG_BLK_DEV_BSG is not set # CONFIG_IOSCHED_DEADLINE is not set CONFIG_ARCH_MULTI_V4=y CONFIG_ARCH_MULTI_V4T=y # CONFIG_ARCH_MULTI_V7 is not set CONFIG_ARCH_MOXART=y CONFIG_MACH_UC7112LX=y CONFIG_PREEMPT=y CONFIG_AEABI=y # CONFIG_CROSS_MEMORY_ATTACH is not set # CONFIG_ATAGS is not set CONFIG_ARM_APPENDED_DTB=y CONFIG_NET=y CONFIG_PACKET=y CONFIG_UNIX=y CONFIG_INET=y CONFIG_IP_MULTICAST=y CONFIG_IP_PNP=y CONFIG_IP_PNP_DHCP=y # CONFIG_INET_XFRM_MODE_TRANSPORT is not set # CONFIG_INET_XFRM_MODE_TUNNEL is not set # CONFIG_INET_XFRM_MODE_BEET is not set # CONFIG_INET_LRO is not set # CONFIG_INET_DIAG is not set # CONFIG_IPV6 is not set # CONFIG_WIRELESS is not set CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y # CONFIG_PREVENT_FIRMWARE_BUILD is not set # CONFIG_FW_LOADER is not set CONFIG_MTD=y CONFIG_MTD_BLOCK=y CONFIG_MTD_CFI=y CONFIG_MTD_CFI_ADV_OPTIONS=y CONFIG_MTD_CFI_GEOMETRY=y CONFIG_MTD_CFI_INTELEXT=y CONFIG_MTD_COMPLEX_MAPPINGS=y CONFIG_MTD_PHYSMAP=y CONFIG_MTD_PHYSMAP_OF=y CONFIG_BLK_DEV_LOOP=y CONFIG_NETDEVICES=y CONFIG_NETCONSOLE=y CONFIG_NETCONSOLE_DYNAMIC=y # CONFIG_NET_VENDOR_ARC is not set # CONFIG_NET_CADENCE is not set # CONFIG_NET_VENDOR_BROADCOM is not set # CONFIG_NET_VENDOR_CIRRUS is not set # CONFIG_NET_VENDOR_FARADAY is not set # CONFIG_NET_VENDOR_INTEL is not set # CONFIG_NET_VENDOR_MARVELL is not set # CONFIG_NET_VENDOR_MICREL is not set CONFIG_ARM_MOXART_ETHER=y # CONFIG_NET_VENDOR_NATSEMI is not set # CONFIG_NET_VENDOR_SEEQ is not set # CONFIG_NET_VENDOR_SMSC is not set # CONFIG_NET_VENDOR_STMICRO is not set # CONFIG_NET_VENDOR_VIA is not set # CONFIG_NET_VENDOR_WIZNET is not set CONFIG_REALTEK_PHY=y CONFIG_MDIO_MOXART=y # CONFIG_WLAN is not set # CONFIG_INPUT_MOUSEDEV is not set CONFIG_INPUT_EVDEV=y CONFIG_INPUT_EVBUG=y # CONFIG_KEYBOARD_ATKBD is not set CONFIG_KEYBOARD_GPIO_POLLED=y # CONFIG_INPUT_MOUSE is not set # CONFIG_SERIO is not set # CONFIG_VT is not set # CONFIG_LEGACY_PTYS is not set CONFIG_MOXA_SMARTIO=y # CONFIG_DEVKMEM is not set CONFIG_SERIAL_8250=y CONFIG_SERIAL_8250_CONSOLE=y CONFIG_SERIAL_8250_NR_UARTS=3 CONFIG_SERIAL_8250_RUNTIME_UARTS=3 CONFIG_SERIAL_8250_EXTENDED=y CONFIG_SERIAL_8250_SHARE_IRQ=y CONFIG_SERIAL_OF_PLATFORM=y # CONFIG_HW_RANDOM is not set CONFIG_DEBUG_GPIO=y CONFIG_GPIO_SYSFS=y CONFIG_GPIO_MOXART=y # CONFIG_HWMON is not set CONFIG_WATCHDOG=y CONFIG_WATCHDOG_CORE=y CONFIG_WATCHDOG_NOWAYOUT=y CONFIG_MOXART_WDT=y # CONFIG_USB_SUPPORT is not set CONFIG_MMC=y CONFIG_MMC_MOXART=y CONFIG_NEW_LEDS=y CONFIG_LEDS_CLASS=y CONFIG_LEDS_GPIO=y CONFIG_LEDS_TRIGGERS=y CONFIG_LEDS_TRIGGER_TIMER=y CONFIG_LEDS_TRIGGER_ONESHOT=y CONFIG_LEDS_TRIGGER_HEARTBEAT=y CONFIG_LEDS_TRIGGER_DEFAULT_ON=y CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_MOXART=y CONFIG_DMADEVICES=y CONFIG_MOXART_DMA=y # CONFIG_IOMMU_SUPPORT is not set CONFIG_MCB=y CONFIG_EXT3_FS=y CONFIG_TMPFS=y CONFIG_CONFIGFS_FS=y CONFIG_JFFS2_FS=y # CONFIG_NETWORK_FILESYSTEMS is not set CONFIG_PRINTK_TIME=y CONFIG_DEBUG_INFO=y # CONFIG_ENABLE_WARN_DEPRECATED is not set # CONFIG_ENABLE_MUST_CHECK is not set CONFIG_MAGIC_SYSRQ=y CONFIG_PANIC_ON_OOPS=y CONFIG_PANIC_TIMEOUT=10 # CONFIG_SCHED_DEBUG is not set # CONFIG_DEBUG_PREEMPT is not set # CONFIG_FTRACE is not set CONFIG_DEBUG_USER=y CONFIG_DEBUG_LL=y CONFIG_DEBUG_LL_UART_8250=y CONFIG_DEBUG_UART_PHYS=0x98200000 CONFIG_DEBUG_UART_VIRT=0xf9820000 CONFIG_EARLY_PRINTK=y # CONFIG_CRYPTO_ANSI_CPRNG is not set # CONFIG_CRYPTO_HW is not set CONFIG_CRC32_BIT=y Regards, Jonas -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/