Re: nios2 crash/hang in mainline due to 'lib: update LZ4 compressor module'

From: Guenter Roeck
Date: Wed Mar 08 2017 - 00:07:56 EST

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On 03/07/2017 04:46 AM, Tobias Klauser wrote:

On 2017-03-03 at 04:04:41 +0100, Guenter Roeck <linux@xxxxxxxxxxxx> wrote:

On 03/02/2017 08:38 AM, Tobias Klauser wrote:

On 2017-03-01 at 20:45:21 +0100, Guenter Roeck <linux@xxxxxxxxxxxx> wrote:

On Wed, Mar 01, 2017 at 07:58:17PM +0100, Sven Schmidt wrote:

Hi Guenter, Tobias and Sandra,

thanks for your effort here.

On Tue, Feb 28, 2017 at 10:14:13AM -0800, Guenter Roeck wrote:

On Tue, Feb 28, 2017 at 10:53:56AM -0700, Sandra Loosemore wrote:

On 02/28/2017 08:53 AM, Tobias Klauser wrote:

(adding Sandra Loosemore to Cc due to possible relation to gcc/binutils
for nios2)

On 2017-02-26 at 22:03:38 +0100, Guenter Roeck <linux@xxxxxxxxxxxx> wrote:

Hi Sven,

my qemu test for nios2 started failing with commit 4e1a33b105dd ("lib:
update LZ4 compressor module"). The test hangs early during boot before
any console output is seen. Reverting the offending patch as well as the
subsequent lz4 related patches fixes the problem. Disabling CONFIG_RD_LZ4
and with it other LZ4 options also fixes it (as does adding "return -EINVAL;"
at the top of the LZ4 decompression code). For reference, bisect log
is attached.

I tried with buildroot toolchains using gcc 6.1.0 as well as 6.3.0
and binutils 2.26.1. Scripts used to run the tests are available at
https://github.com/groeck/linux-build-test/tree/master/rootfs/nios2.
Qemu is from qemu mainline or qemu v2.8 with nios2 patches applied.

Looks like this is somehow related to gcc/binutils. Using GCC 4.8.3 and
binutils 2.24.51 (both from from Sourcery CodeBench Lite 2014.05) I can
get a kernel booting on latest master branch. AFAICT, none of the
LZ4_decompress_* functions are called during boot.

It seems a bit strange that code which is not actually called causes problems like that.

Yes, it is, though it is always possible. The code isn't exactly easy to
understand; there may be some hidden caveats such as global variables. It may
also be that some jump target exceeds its range (though why that would only
be seen with the LZ4 code is another question), or that the compiler gets
confused by the forced inlines (disabling that didn't make a difference,
though, nor did disabling -O3).

Please let me know if and how I may help you figure out what's happening, especially
regarding the differences between the previous LZ4 and the current implementation.

For my part I am all but clueless. Unless someone has an idea, we may to
disable LZ4 support for nios2 for the time being. Does anyone have thoughts
on that ? Of course, that would not help if the problem also affects
recent gcc/binutil versions on other architectures.

After some further investigations, I'd say this isn't "caused" by LZ4
specifically but by a more general problem with one of the nios2 arch
specific tools involved.

I manually enabled random additional CONFIG_* options and in some cases
I got the kernel to boot (with CONFIG_RD_LZ4 enabled and no return
-EINVAL in place) while in others I didn't. So I'd rather suspect this
problem to be connected to the size or structure of the generated vmlinux
image.

Or could this even be a problem with qemu? Did anyone already verify
this on the 10m50 devboard? (Unfortunately I don't have any nios2
devboard available right now, otherwise I would have done this...)

That is of course always possible.

Other than that I'm also becoming all but clueless... One option I
thought of was using the QEMU monitor to dump the CPU state after the
hang but so far I didn't manage to get it to work (hints appreciated ;)

Something like

qemu-system-nios2 -M 10m50-ghrd -kernel vmlinux -no-reboot \
-dtb arch/nios2/boot/dts/10m50_devboard.dtb \
--append "rdinit=/sbin/init" -initrd busybox-nios2.cpio

gives you a qemu monitor window. Use "info registers" to see registers.
Looks like it is stuck in init_bootmem_core, or at least that is what it
shows for me.

Thanks a lot for the hint, this worked perfectly. I'm not all that
familiar with qemu :-/

Using the qemu gdbserver I can indeed confirm that it seems to be stuck
in init_bootmem_core:

(gdb) file vmlinux
Reading symbols from vmlinux...done.
(gdb) target remote localhost:1234
Remote debugging using localhost:1234
link_bootmem (bdata=<optimized out>) at mm/bootmem.c:80
80 if (bdata->node_min_pfn < ent->node_min_pfn) {

This looks like a very weird place for it to get stuck...

So I followed a different path and implemented early printk support for
the 8250/16650 serial console on nios2, so I could get debug outputs
earlier on (patch below, I'll also officially submit this later one).

That is great; I'll add that to my own tests to get some output.

Now I get the following output on boot:

Linux version 4.11.0-rc1-dirty (tobiask@ziws08) (gcc version 7.0.1 20170226 (experimental) (GCC) ) #46 Tue Mar 7 13:40:53 CET 2017
bootconsole [early0] enabled
Early console on uart16650 initialized at 0xf8001600
OF: fdt: Error -11 processing FDT
Kernel panic - not syncing: setup_cpuinfo: No CPU found in devicetree!

---[ end Kernel panic - not syncing: setup_cpuinfo: No CPU found in devicetree!

Looks like the in-memory device tree somehow gets corrupted. Not sure
yet why and how this is linked to the Kconfig options selected but at
least we now have a possibility to use debug messages earlier on.

Interesting. I was able to confirm that the lz4 patch is not the root
cause. I was not able to reproduce the problem in v4.10, but after
adding more and more configuration options I get it to fail starting
with commit ac1820fb286b552 ("Merge tag 'for-next-dma_ops' of
git://git.kernel.org/pub/ scm/linux/kernel/git/dledford/rdma").
No idea if that is the root cause either. Kernel configuration for that
case is attached.

Of course ac1820fb286b552 doesn't crash anymore with that after applying
your patch below, and v4.11-rc1 crashes without any output :-(.

I think I'll add some logging into qemu to see where it puts the dtb.

Guenter

---%<---%<---

Patch for 8250/16650 early printk support on nios2 (make sure to select
CONFIG_EARLY_PRINTK):

diff --git a/arch/nios2/Kconfig.debug b/arch/nios2/Kconfig.debug
index 2fd08cbfdddb..35b5dd67b15a 100644
--- a/arch/nios2/Kconfig.debug
+++ b/arch/nios2/Kconfig.debug
@@ -18,7 +18,7 @@ config EARLY_PRINTK
bool "Activate early kernel debugging"
default y
select SERIAL_CORE_CONSOLE
- depends on SERIAL_ALTERA_JTAGUART_CONSOLE || SERIAL_ALTERA_UART_CONSOLE
+ depends on SERIAL_ALTERA_JTAGUART_CONSOLE || SERIAL_ALTERA_UART_CONSOLE || SERIAL_8250_CONSOLE
help
Enable early printk on console
This is useful for kernel debugging when your machine crashes very
diff --git a/arch/nios2/kernel/early_printk.c b/arch/nios2/kernel/early_printk.c
index c08e4c1486fc..24b4506f4969 100644
--- a/arch/nios2/kernel/early_printk.c
+++ b/arch/nios2/kernel/early_printk.c
@@ -22,6 +22,8 @@ static unsigned long base_addr;

#if defined(CONFIG_SERIAL_ALTERA_JTAGUART_CONSOLE)

+#define UART_NAME "altera_jtaguart"
+
#define ALTERA_JTAGUART_DATA_REG 0
#define ALTERA_JTAGUART_CONTROL_REG 4
#define ALTERA_JTAGUART_CONTROL_WSPACE_MSK 0xFFFF0000
@@ -53,6 +55,8 @@ static void early_console_write(struct console *con, const char *s, unsigned n)

#elif defined(CONFIG_SERIAL_ALTERA_UART_CONSOLE)

+#define UART_NAME "altera_uart"
+
#define ALTERA_UART_TXDATA_REG 4
#define ALTERA_UART_STATUS_REG 8
#define ALTERA_UART_STATUS_TRDY 0x0040
@@ -80,9 +84,40 @@ static void early_console_write(struct console *con, const char *s, unsigned n)
}
}

+#elif defined(CONFIG_SERIAL_8250_CONSOLE)
+
+#define UART_NAME "uart16650"
+
+#define UART_LSR_TEMT 0x40 /* Transmitter empty */
+#define UART_LSR_THRE 0x20 /* Transmit-hold-register empty */
+#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
+
+#define UART_GET_SR() \
+ __builtin_ldwio((void *)(base_addr + 0x14))
+#define UART_SET_TX(v) \
+ __builtin_stwio((void *)(base_addr), v)
+
+static void early_console_putc(char c)
+{
+ while (!((UART_GET_SR() & BOTH_EMPTY) == BOTH_EMPTY))
+ ;
+
+ UART_SET_TX(c & 0xff);
+}
+
+static void early_console_write(struct console *con, const char *s, unsigned n)
+{
+ while (n-- && *s) {
+ early_console_putc(*s);
+ if (*s == '\n')
+ early_console_putc('\r');
+ s++;
+ }
+}
+
#else
-# error Neither SERIAL_ALTERA_JTAGUART_CONSOLE nor SERIAL_ALTERA_UART_CONSOLE \
-selected
+# error Neither SERIAL_ALTERA_JTAGUART_CONSOLE, SERIAL_ALTERA_UART_CONSOLE, \
+ nor SERIAL_8250_CONSOLE selected
#endif

static struct console early_console_prom = {
@@ -95,7 +130,8 @@ static struct console early_console_prom = {
void __init setup_early_printk(void)
{
#if defined(CONFIG_SERIAL_ALTERA_JTAGUART_CONSOLE) || \
- defined(CONFIG_SERIAL_ALTERA_UART_CONSOLE)
+ defined(CONFIG_SERIAL_ALTERA_UART_CONSOLE) || \
+ defined(CONFIG_SERIAL_8250_CONSOLE)
base_addr = of_early_console();
#else
base_addr = 0;
@@ -114,5 +150,5 @@ void __init setup_early_printk(void)

early_console = &early_console_prom;
register_console(early_console);
- pr_info("early_console initialized at 0x%08lx\n", base_addr);
+ pr_info("Early console on %s initialized at 0x%08lx\n", UART_NAME, base_addr);
}

CONFIG_SYSVIPC=y
CONFIG_NO_HZ_IDLE=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_BLK_DEV_INITRD=y
CONFIG_SYSCTL_SYSCALL=y
# CONFIG_ELF_CORE is not set
# CONFIG_EPOLL is not set
# CONFIG_SIGNALFD is not set
# CONFIG_TIMERFD is not set
# CONFIG_EVENTFD is not set
# CONFIG_SHMEM is not set
# CONFIG_AIO is not set
CONFIG_EMBEDDED=y
CONFIG_SLAB=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
CONFIG_NIOS2_MEM_BASE=0x8000000
CONFIG_NIOS2_HW_MUL_SUPPORT=y
CONFIG_NIOS2_HW_DIV_SUPPORT=y
CONFIG_CUSTOM_CACHE_SETTINGS=y
CONFIG_NIOS2_DCACHE_SIZE=0x8000
CONFIG_NIOS2_ICACHE_SIZE=0x8000
# CONFIG_NIOS2_CMDLINE_IGNORE_DTB is not set
CONFIG_NIOS2_PASS_CMDLINE=y
CONFIG_BINFMT_MISC=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_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
CONFIG_NET_IPIP=y
CONFIG_NET_IPGRE_DEMUX=y
CONFIG_NET_IPGRE=y
CONFIG_NET_IPGRE_BROADCAST=y
CONFIG_IP_MROUTE=y
CONFIG_IP_PIMSM_V1=y
CONFIG_IP_PIMSM_V2=y
CONFIG_SYN_COOKIES=y
CONFIG_NET_FOU_IP_TUNNELS=y
CONFIG_INET_AH=y
CONFIG_INET_ESP=y
CONFIG_INET_ESP_OFFLOAD=y
CONFIG_INET_IPCOMP=y
CONFIG_INET_UDP_DIAG=y
CONFIG_INET_RAW_DIAG=y
CONFIG_INET_DIAG_DESTROY=y
CONFIG_TCP_CONG_ADVANCED=y
CONFIG_TCP_CONG_BIC=y
CONFIG_TCP_CONG_WESTWOOD=y
CONFIG_TCP_CONG_HTCP=y
CONFIG_TCP_CONG_HSTCP=y
CONFIG_TCP_CONG_HYBLA=y
CONFIG_TCP_CONG_NV=y
CONFIG_TCP_CONG_SCALABLE=y
CONFIG_TCP_CONG_LP=y
CONFIG_TCP_CONG_VENO=y
CONFIG_TCP_CONG_YEAH=y
CONFIG_TCP_CONG_ILLINOIS=y
CONFIG_TCP_CONG_DCTCP=y
CONFIG_TCP_CONG_CDG=y
CONFIG_TCP_CONG_BBR=y
CONFIG_NETWORK_SECMARK=y
CONFIG_BRIDGE=y
CONFIG_VLAN_8021Q=y
CONFIG_BT=y
CONFIG_CFG80211=y
CONFIG_NL80211_TESTMODE=y
CONFIG_CFG80211_DEVELOPER_WARNINGS=y
CONFIG_CFG80211_CERTIFICATION_ONUS=y
CONFIG_CFG80211_REG_CELLULAR_HINTS=y
CONFIG_CFG80211_REG_RELAX_NO_IR=y
CONFIG_CFG80211_DEBUGFS=y
CONFIG_CFG80211_INTERNAL_REGDB=y
CONFIG_CFG80211_WEXT=y
CONFIG_MAC80211=y
CONFIG_MAC80211_MESH=y
CONFIG_MAC80211_LEDS=y
CONFIG_MAC80211_DEBUGFS=y
CONFIG_MAC80211_MESSAGE_TRACING=y
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
# CONFIG_FW_LOADER is not set
CONFIG_MTD=y
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_CFI=y
CONFIG_MTD_CFI_INTELEXT=y
CONFIG_MTD_CFI_AMDSTD=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_NVME_SCSI=y
CONFIG_NVME_FC=y
CONFIG_NVME_TARGET=y
CONFIG_NVME_TARGET_LOOP=y
CONFIG_NVME_TARGET_FC=y
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_ST=y
CONFIG_CHR_DEV_OSST=y
CONFIG_BLK_DEV_SR=y
CONFIG_CHR_DEV_SG=y
CONFIG_ATA=y
CONFIG_MD=y
CONFIG_NETDEVICES=y
CONFIG_ALTERA_TSE=y
CONFIG_MARVELL_PHY=y
# CONFIG_WLAN is not set
CONFIG_NVM=y
# CONFIG_INPUT_MOUSE is not set
# CONFIG_VT is not set
CONFIG_SERIAL_8250=y
# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_OF_PLATFORM=y
CONFIG_SERIAL_ALTERA_JTAGUART=y
# CONFIG_HW_RANDOM is not set
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_ARB_GPIO_CHALLENGE=y
CONFIG_I2C_MUX_GPIO=y
CONFIG_I2C_MUX_PCA9541=y
CONFIG_I2C_MUX_PCA954x=y
CONFIG_I2C_MUX_REG=y
CONFIG_I2C_MUX_MLXCPLD=y
CONFIG_I2C_DESIGNWARE_PLATFORM=y
CONFIG_I2C_GPIO=y
CONFIG_I2C_OCORES=y
CONFIG_I2C_PCA_PLATFORM=y
CONFIG_I2C_SIMTEC=y
CONFIG_I2C_XILINX=y
CONFIG_I2C_DIOLAN_U2C=y
CONFIG_I2C_PARPORT_LIGHT=y
CONFIG_I2C_ROBOTFUZZ_OSIF=y
CONFIG_I2C_TAOS_EVM=y
CONFIG_I2C_TINY_USB=y
CONFIG_I2C_SLAVE=y
CONFIG_I2C_SLAVE_EEPROM=y
CONFIG_I2C_DEBUG_CORE=y
CONFIG_I2C_DEBUG_ALGO=y
CONFIG_I2C_DEBUG_BUS=y
CONFIG_SPI=y
CONFIG_SPI_ALTERA=y
CONFIG_SPI_CADENCE=y
CONFIG_SPI_DESIGNWARE=y
CONFIG_SPI_GPIO=y
CONFIG_SPI_OC_TINY=y
CONFIG_SPI_ROCKCHIP=y
CONFIG_SPI_SC18IS602=y
CONFIG_SPI_XCOMM=y
CONFIG_SPI_XILINX=y
CONFIG_SPI_ZYNQMP_GQSPI=y
CONFIG_SPI_SPIDEV=y
CONFIG_SPI_TLE62X0=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_SYSFS=y
CONFIG_GPIO_ALTERA=y
CONFIG_POWER_RESET=y
CONFIG_POWER_SUPPLY=y
CONFIG_SENSORS_AD7314=y
CONFIG_SENSORS_AD7414=y
CONFIG_SENSORS_AD7418=y
CONFIG_SENSORS_ADM1021=y
CONFIG_SENSORS_ADM1025=y
CONFIG_SENSORS_ADM1026=y
CONFIG_SENSORS_ADM1029=y
CONFIG_SENSORS_ADT7411=y
CONFIG_SENSORS_ADT7462=y
CONFIG_SENSORS_ADT7470=y
CONFIG_SENSORS_ADT7475=y
CONFIG_SENSORS_DS620=y
CONFIG_SENSORS_DS1621=y
CONFIG_SENSORS_G760A=y
CONFIG_SENSORS_G762=y
CONFIG_SENSORS_GPIO_FAN=y
CONFIG_SENSORS_LTC2945=y
CONFIG_SENSORS_LTC2990=y
CONFIG_SENSORS_LTC4151=y
CONFIG_SENSORS_LTC4215=y
CONFIG_SENSORS_LTC4222=y
CONFIG_SENSORS_LTC4245=y
CONFIG_SENSORS_LTC4260=y
CONFIG_SENSORS_LTC4261=y
CONFIG_SENSORS_MAX1111=y
CONFIG_SENSORS_MAX16065=y
CONFIG_SENSORS_MAX1619=y
CONFIG_SENSORS_MAX1668=y
CONFIG_SENSORS_MAX197=y
CONFIG_SENSORS_MAX31722=y
CONFIG_SENSORS_MAX6639=y
CONFIG_SENSORS_MAX6642=y
CONFIG_SENSORS_MAX6650=y
CONFIG_SENSORS_MAX6697=y
CONFIG_SENSORS_MAX31790=y
CONFIG_SENSORS_MCP3021=y
CONFIG_SENSORS_TC654=y
CONFIG_SENSORS_ADCXX=y
CONFIG_SENSORS_LM63=y
CONFIG_SENSORS_LM70=y
CONFIG_SENSORS_LM73=y
CONFIG_SENSORS_LM75=y
CONFIG_SENSORS_LM77=y
CONFIG_SENSORS_LM78=y
CONFIG_SENSORS_LM80=y
CONFIG_SENSORS_LM83=y
CONFIG_SENSORS_LM85=y
CONFIG_SENSORS_LM87=y
CONFIG_SENSORS_LM90=y
CONFIG_SENSORS_LM92=y
CONFIG_SENSORS_LM93=y
CONFIG_SENSORS_LM95234=y
CONFIG_SENSORS_LM95241=y
CONFIG_SENSORS_LM95245=y
CONFIG_SENSORS_NTC_THERMISTOR=y
CONFIG_SENSORS_NCT7802=y
CONFIG_SENSORS_NCT7904=y
CONFIG_PMBUS=y
CONFIG_SENSORS_ADM1275=y
CONFIG_SENSORS_LM25066=y
CONFIG_SENSORS_LTC2978=y
CONFIG_SENSORS_LTC3815=y
CONFIG_SENSORS_MAX16064=y
CONFIG_SENSORS_MAX20751=y
CONFIG_SENSORS_MAX34440=y
CONFIG_SENSORS_MAX8688=y
CONFIG_SENSORS_TPS40422=y
CONFIG_SENSORS_UCD9000=y
CONFIG_SENSORS_UCD9200=y
CONFIG_SENSORS_ZL6100=y
CONFIG_SENSORS_INA209=y
CONFIG_THERMAL=y
CONFIG_WATCHDOG=y
CONFIG_MFD_ACT8945A=y
CONFIG_MFD_AS3711=y
CONFIG_PMIC_ADP5520=y
CONFIG_MFD_AAT2870_CORE=y
CONFIG_PMIC_DA903X=y
CONFIG_MFD_DA9052_SPI=y
CONFIG_MFD_DA9052_I2C=y
CONFIG_MFD_DA9055=y
CONFIG_MFD_DA9062=y
CONFIG_MFD_DA9063=y
CONFIG_MFD_DA9150=y
CONFIG_MFD_DLN2=y
CONFIG_MFD_MC13XXX_SPI=y
CONFIG_MFD_MC13XXX_I2C=y
CONFIG_MFD_HI6421_PMIC=y
CONFIG_HTC_PASIC3=y
CONFIG_HTC_I2CPLD=y
CONFIG_INTEL_SOC_PMIC=y
CONFIG_MFD_88PM800=y
CONFIG_MFD_88PM805=y
CONFIG_MFD_MAX14577=y
CONFIG_MFD_MAX77620=y
CONFIG_MFD_MAX77686=y
CONFIG_MFD_MAX77693=y
CONFIG_MFD_MAX77843=y
CONFIG_MFD_MAX8907=y
CONFIG_MFD_MAX8925=y
CONFIG_MFD_MAX8997=y
CONFIG_MFD_MAX8998=y
CONFIG_MFD_MT6397=y
CONFIG_REGULATOR=y
CONFIG_REGULATOR_FIXED_VOLTAGE=y
CONFIG_REGULATOR_VIRTUAL_CONSUMER=y
CONFIG_REGULATOR_USERSPACE_CONSUMER=y
CONFIG_REGULATOR_ACT8865=y
CONFIG_REGULATOR_AD5398=y
CONFIG_REGULATOR_DA903X=y
CONFIG_REGULATOR_DA9052=y
CONFIG_REGULATOR_DA9055=y
CONFIG_REGULATOR_DA9062=y
CONFIG_REGULATOR_DA9063=y
CONFIG_REGULATOR_DA9210=y
CONFIG_REGULATOR_DA9211=y
CONFIG_REGULATOR_FAN53555=y
CONFIG_REGULATOR_GPIO=y
CONFIG_REGULATOR_HI6421=y
CONFIG_REGULATOR_ISL9305=y
CONFIG_REGULATOR_ISL6271A=y
CONFIG_REGULATOR_LP3971=y
CONFIG_REGULATOR_LP3972=y
CONFIG_REGULATOR_LP872X=y
CONFIG_REGULATOR_LP8755=y
CONFIG_REGULATOR_LTC3589=y
CONFIG_REGULATOR_LTC3676=y
CONFIG_REGULATOR_MAX14577=y
CONFIG_REGULATOR_MAX1586=y
CONFIG_REGULATOR_MAX77620=y
CONFIG_REGULATOR_MAX8649=y
CONFIG_REGULATOR_MAX8660=y
CONFIG_REGULATOR_MAX8907=y
CONFIG_REGULATOR_MAX8925=y
CONFIG_REGULATOR_MAX8952=y
CONFIG_REGULATOR_MAX8973=y
CONFIG_REGULATOR_MAX8997=y
CONFIG_REGULATOR_MAX8998=y
CONFIG_REGULATOR_MAX77686=y
CONFIG_REGULATOR_MAX77693=y
CONFIG_REGULATOR_MAX77802=y
CONFIG_REGULATOR_MC13783=y
CONFIG_REGULATOR_MC13892=y
CONFIG_REGULATOR_MT6311=y
CONFIG_REGULATOR_MT6323=y
CONFIG_REGULATOR_MT6397=y
CONFIG_REGULATOR_PFUZE100=y
CONFIG_REGULATOR_PV88060=y
CONFIG_REGULATOR_PV88080=y
CONFIG_REGULATOR_PV88090=y
CONFIG_REGULATOR_TPS51632=y
CONFIG_REGULATOR_TPS62360=y
CONFIG_REGULATOR_TPS65023=y
CONFIG_REGULATOR_TPS6507X=y
CONFIG_REGULATOR_TPS6524X=y
CONFIG_MEDIA_SUPPORT=y
CONFIG_MEDIA_CAMERA_SUPPORT=y
CONFIG_MEDIA_ANALOG_TV_SUPPORT=y
CONFIG_MEDIA_DIGITAL_TV_SUPPORT=y
CONFIG_MEDIA_RADIO_SUPPORT=y
CONFIG_MEDIA_SDR_SUPPORT=y
CONFIG_MEDIA_RC_SUPPORT=y
CONFIG_MEDIA_CEC_SUPPORT=y
CONFIG_MEDIA_CONTROLLER=y
CONFIG_VIDEO_V4L2_SUBDEV_API=y
CONFIG_VIDEO_ADV_DEBUG=y
CONFIG_VIDEO_FIXED_MINOR_RANGES=y
CONFIG_DVB_DYNAMIC_MINORS=y
CONFIG_DVB_DEMUX_SECTION_LOSS_LOG=y
CONFIG_USB=y
CONFIG_USB_DYNAMIC_MINORS=y
CONFIG_USB_XHCI_HCD=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y
CONFIG_USB_OXU210HP_HCD=y
CONFIG_USB_ISP116X_HCD=y
CONFIG_USB_ISP1362_HCD=y
CONFIG_USB_FOTG210_HCD=y
CONFIG_USB_MAX3421_HCD=y
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_SL811_HCD=y
CONFIG_USB_R8A66597_HCD=y
CONFIG_USB_ACM=y
CONFIG_USB_STORAGE=y
CONFIG_USB_STORAGE_SDDR09=y
CONFIG_USB_STORAGE_SDDR55=y
CONFIG_USB_STORAGE_JUMPSHOT=y
CONFIG_USB_STORAGE_ALAUDA=y
CONFIG_USB_STORAGE_ONETOUCH=y
CONFIG_USB_STORAGE_KARMA=y
CONFIG_USB_STORAGE_CYPRESS_ATACB=y
CONFIG_USB_UAS=y
CONFIG_USBIP_CORE=y
CONFIG_USB_DWC3=y
CONFIG_USB_DWC2=y
CONFIG_USB_ISP1760=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_IIO=y
CONFIG_IIO_BUFFER_CB=y
CONFIG_IIO_SW_DEVICE=y
CONFIG_IIO_SW_TRIGGER=y
CONFIG_BMA180=y
CONFIG_BMA220=y
CONFIG_BMC150_ACCEL=y
CONFIG_DA280=y
CONFIG_DA311=y
CONFIG_DMARD06=y
CONFIG_DMARD09=y
CONFIG_DMARD10=y
CONFIG_IIO_ST_ACCEL_3AXIS=y
CONFIG_KXSD9=y
CONFIG_KXCJK1013=y
CONFIG_MC3230=y
CONFIG_MMA7455_I2C=y
CONFIG_MMA7455_SPI=y
CONFIG_MMA7660=y
CONFIG_MMA8452=y
CONFIG_MMA9551=y
CONFIG_MMA9553=y
CONFIG_MXC4005=y
CONFIG_MXC6255=y
CONFIG_SCA3000=y
CONFIG_STK8312=y
CONFIG_STK8BA50=y
CONFIG_AM2315=y
CONFIG_DHT11=y
CONFIG_HDC100X=y
CONFIG_HTS221=y
CONFIG_HTU21=y
CONFIG_SI7005=y
CONFIG_SI7020=y
CONFIG_ADJD_S311=y
CONFIG_AL3320A=y
CONFIG_APDS9300=y
CONFIG_APDS9960=y
CONFIG_BH1750=y
CONFIG_BH1780=y
CONFIG_CM32181=y
CONFIG_CM3232=y
CONFIG_CM3323=y
CONFIG_CM3605=y
CONFIG_CM36651=y
CONFIG_GP2AP020A00F=y
CONFIG_SENSORS_ISL29018=y
CONFIG_ISL29125=y
CONFIG_JSA1212=y
CONFIG_RPR0521=y
CONFIG_LTR501=y
CONFIG_MAX44000=y
CONFIG_OPT3001=y
CONFIG_PA12203001=y
CONFIG_SI1145=y
CONFIG_STK3310=y
CONFIG_TCS3414=y
CONFIG_TCS3472=y
CONFIG_SENSORS_TSL2563=y
CONFIG_TSL2583=y
CONFIG_TSL4531=y
CONFIG_US5182D=y
CONFIG_VCNL4000=y
CONFIG_VEML6070=y
CONFIG_EXT3_FS=y
CONFIG_BTRFS_FS=y
CONFIG_BTRFS_FS_POSIX_ACL=y
CONFIG_EXPORTFS_BLOCK_OPS=y
# CONFIG_DNOTIFY is not set
# CONFIG_INOTIFY_USER is not set
CONFIG_OVERLAY_FS=y
CONFIG_ISO9660_FS=y
CONFIG_UDF_FS=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_NTFS_FS=y
CONFIG_NTFS_DEBUG=y
CONFIG_NTFS_RW=y
CONFIG_JFFS2_FS=y
CONFIG_SQUASHFS=y
CONFIG_SQUASHFS_LZ4=y
CONFIG_SQUASHFS_LZO=y
CONFIG_SQUASHFS_XZ=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
CONFIG_ROOT_NFS=y
CONFIG_SUNRPC_DEBUG=y
CONFIG_DEBUG_INFO=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
CONFIG_PANIC_ON_OOPS=y
CONFIG_SCHED_STACK_END_CHECK=y

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