Re: [linus:master] BUILD REGRESSION 2a26d99b251b8625d27aed14e97fc10707a3a81f

2016-10-31 Thread Linus Torvalds 
On Sun, Oct 30, 2016 at 11:00 PM, Fengguang Wu  wrote:
>
> Ah the root cause is these reminding reports for old errors

Thanks for looking into it, the report looked a bit scary ;)

Linus

Re: [linus:master] BUILD REGRESSION 2a26d99b251b8625d27aed14e97fc10707a3a81f

2016-10-31 Thread Linus Torvalds 
On Sun, Oct 30, 2016 at 11:00 PM, Fengguang Wu  wrote:
>
> Ah the root cause is these reminding reports for old errors

Thanks for looking into it, the report looked a bit scary ;)

Linus

Re: [linus:master] BUILD REGRESSION 2a26d99b251b8625d27aed14e97fc10707a3a81f

2016-10-31 Thread Fengguang Wu 

On Mon, Oct 31, 2016 at 12:58:14PM +0800, Fengguang Wu wrote:

Hi Linus,

On Sun, Oct 30, 2016 at 01:25:50PM -0700, Linus Torvalds wrote:

On Sun, Oct 30, 2016 at 11:03 AM, kbuild test robot
 wrote:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git  master
2a26d99b251b8625d27aed14e97fc10707a3a81f  Merge 
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net


Hmm. The build errors seem to be pretty independent of that merge,
including internal compiler errors etc.


This "BUILD REGRESSION" report lists errors in all commits of a branch
-- ie. not only the showed HEAD commit. Sure "all commits" will be too
huge for the mainline kernel, so there will be limits applied.


Did perhaps something change in the kbuild test robot?


Recently we lowered the threshold to 2 before sending unsolicited
reports like this. That threshold means when we find >= 3 errors in a
tree, only the first 2 will be reported in the regular way (reporting
to the first bad commit). The more errors will be send in a summary
"BUILD REGRESSION" email listing all the triggered errors.

That's a trick to avoid flooding possibly large number of duplicate
error reports to LKML while avoiding hiding possibly non-duplicate
errors. It works well for normal branches, however looks less
effective for linus/master because here we have less clue about the
origin of errors.

So sorry -- this report is a noise. The fix could be to raise the
reporting threshold significantly for linus/master. It's also possible
some bug in the 0day-bot triggered this report unexpectedly.


Ah the root cause is these reminding reports for old errors

https://lists.01.org/pipermail/kbuild-all/2016-October/026922.html
https://lists.01.org/pipermail/kbuild-all/2016-October/025857.html
https://lists.01.org/pipermail/kbuild-all/2016-October/026677.html
...

There are some few of them, which triggered the threshold logic.

Regards,
Fengguang

Re: [linus:master] BUILD REGRESSION 2a26d99b251b8625d27aed14e97fc10707a3a81f

2016-10-31 Thread Fengguang Wu 

On Mon, Oct 31, 2016 at 12:58:14PM +0800, Fengguang Wu wrote:

Hi Linus,

On Sun, Oct 30, 2016 at 01:25:50PM -0700, Linus Torvalds wrote:

On Sun, Oct 30, 2016 at 11:03 AM, kbuild test robot
 wrote:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git  master
2a26d99b251b8625d27aed14e97fc10707a3a81f  Merge 
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net


Hmm. The build errors seem to be pretty independent of that merge,
including internal compiler errors etc.


This "BUILD REGRESSION" report lists errors in all commits of a branch
-- ie. not only the showed HEAD commit. Sure "all commits" will be too
huge for the mainline kernel, so there will be limits applied.


Did perhaps something change in the kbuild test robot?


Recently we lowered the threshold to 2 before sending unsolicited
reports like this. That threshold means when we find >= 3 errors in a
tree, only the first 2 will be reported in the regular way (reporting
to the first bad commit). The more errors will be send in a summary
"BUILD REGRESSION" email listing all the triggered errors.

That's a trick to avoid flooding possibly large number of duplicate
error reports to LKML while avoiding hiding possibly non-duplicate
errors. It works well for normal branches, however looks less
effective for linus/master because here we have less clue about the
origin of errors.

So sorry -- this report is a noise. The fix could be to raise the
reporting threshold significantly for linus/master. It's also possible
some bug in the 0day-bot triggered this report unexpectedly.


Ah the root cause is these reminding reports for old errors

https://lists.01.org/pipermail/kbuild-all/2016-October/026922.html
https://lists.01.org/pipermail/kbuild-all/2016-October/025857.html
https://lists.01.org/pipermail/kbuild-all/2016-October/026677.html
...

There are some few of them, which triggered the threshold logic.

Regards,
Fengguang

Re: [linus:master] BUILD REGRESSION 2a26d99b251b8625d27aed14e97fc10707a3a81f

2016-10-30 Thread Fengguang Wu 

Hi Linus,

On Sun, Oct 30, 2016 at 01:25:50PM -0700, Linus Torvalds wrote:

On Sun, Oct 30, 2016 at 11:03 AM, kbuild test robot
 wrote:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git  master
2a26d99b251b8625d27aed14e97fc10707a3a81f  Merge 
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net


Hmm. The build errors seem to be pretty independent of that merge,
including internal compiler errors etc.


This "BUILD REGRESSION" report lists errors in all commits of a branch
-- ie. not only the showed HEAD commit. Sure "all commits" will be too
huge for the mainline kernel, so there will be limits applied.


Did perhaps something change in the kbuild test robot?


Recently we lowered the threshold to 2 before sending unsolicited
reports like this. That threshold means when we find >= 3 errors in a
tree, only the first 2 will be reported in the regular way (reporting
to the first bad commit). The more errors will be send in a summary
"BUILD REGRESSION" email listing all the triggered errors.

That's a trick to avoid flooding possibly large number of duplicate
error reports to LKML while avoiding hiding possibly non-duplicate
errors. It works well for normal branches, however looks less
effective for linus/master because here we have less clue about the
origin of errors.

So sorry -- this report is a noise. The fix could be to raise the
reporting threshold significantly for linus/master. It's also possible
some bug in the 0day-bot triggered this report unexpectedly.

Regards,
Fengguang

Re: [linus:master] BUILD REGRESSION 2a26d99b251b8625d27aed14e97fc10707a3a81f

2016-10-30 Thread Fengguang Wu 

Hi Linus,

On Sun, Oct 30, 2016 at 01:25:50PM -0700, Linus Torvalds wrote:

On Sun, Oct 30, 2016 at 11:03 AM, kbuild test robot
 wrote:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git  master
2a26d99b251b8625d27aed14e97fc10707a3a81f  Merge 
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net


Hmm. The build errors seem to be pretty independent of that merge,
including internal compiler errors etc.


This "BUILD REGRESSION" report lists errors in all commits of a branch
-- ie. not only the showed HEAD commit. Sure "all commits" will be too
huge for the mainline kernel, so there will be limits applied.


Did perhaps something change in the kbuild test robot?


Recently we lowered the threshold to 2 before sending unsolicited
reports like this. That threshold means when we find >= 3 errors in a
tree, only the first 2 will be reported in the regular way (reporting
to the first bad commit). The more errors will be send in a summary
"BUILD REGRESSION" email listing all the triggered errors.

That's a trick to avoid flooding possibly large number of duplicate
error reports to LKML while avoiding hiding possibly non-duplicate
errors. It works well for normal branches, however looks less
effective for linus/master because here we have less clue about the
origin of errors.

So sorry -- this report is a noise. The fix could be to raise the
reporting threshold significantly for linus/master. It's also possible
some bug in the 0day-bot triggered this report unexpectedly.

Regards,
Fengguang

Re: [linus:master] BUILD REGRESSION 2a26d99b251b8625d27aed14e97fc10707a3a81f

2016-10-30 Thread Philip Li 
On Sun, Oct 30, 2016 at 01:25:50PM -0700, Linus Torvalds wrote:
> On Sun, Oct 30, 2016 at 11:03 AM, kbuild test robot
>  wrote:
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git  master
> > 2a26d99b251b8625d27aed14e97fc10707a3a81f  Merge 
> > git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
> 
> Hmm. The build errors seem to be pretty independent of that merge,
> including internal compiler errors etc.
> 
> Did perhaps something change in the kbuild test robot?
thanks Linus, we will double check this, and provide info.

> 
> Linus
>

Re: [linus:master] BUILD REGRESSION 2a26d99b251b8625d27aed14e97fc10707a3a81f

2016-10-30 Thread Philip Li 
On Sun, Oct 30, 2016 at 01:25:50PM -0700, Linus Torvalds wrote:
> On Sun, Oct 30, 2016 at 11:03 AM, kbuild test robot
>  wrote:
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git  master
> > 2a26d99b251b8625d27aed14e97fc10707a3a81f  Merge 
> > git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
> 
> Hmm. The build errors seem to be pretty independent of that merge,
> including internal compiler errors etc.
> 
> Did perhaps something change in the kbuild test robot?
thanks Linus, we will double check this, and provide info.

> 
> Linus
>

Re: [linus:master] BUILD REGRESSION 2a26d99b251b8625d27aed14e97fc10707a3a81f

2016-10-30 Thread Linus Torvalds 
On Sun, Oct 30, 2016 at 11:03 AM, kbuild test robot
 wrote:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git  master
> 2a26d99b251b8625d27aed14e97fc10707a3a81f  Merge 
> git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Hmm. The build errors seem to be pretty independent of that merge,
including internal compiler errors etc.

Did perhaps something change in the kbuild test robot?

Linus

Re: [linus:master] BUILD REGRESSION 2a26d99b251b8625d27aed14e97fc10707a3a81f

2016-10-30 Thread Linus Torvalds 
On Sun, Oct 30, 2016 at 11:03 AM, kbuild test robot
 wrote:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git  master
> 2a26d99b251b8625d27aed14e97fc10707a3a81f  Merge 
> git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Hmm. The build errors seem to be pretty independent of that merge,
including internal compiler errors etc.

Did perhaps something change in the kbuild test robot?

Linus

[linus:master] BUILD REGRESSION 2a26d99b251b8625d27aed14e97fc10707a3a81f

2016-10-30 Thread kbuild test robot 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git  master
2a26d99b251b8625d27aed14e97fc10707a3a81f  Merge 
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

arch/ia64/kernel/entry.S:622: Error: Operand 2 of `adds' should be a 14-bit 
integer (-8192-8191)
arch/ia64/kernel/fsys.S:67: Error: Operand 3 of `add' should be a general 
register r0-r3
arch/ia64/kernel/ivt.S:761: Error: Operand 3 of `add' should be a general 
register r0-r3
arch/mips/kernel/mips-cpc.c:47: undefined reference to 
`mips_cpc_default_phys_base'
arch/mips/vdso/elf.S:1:0: error: '-march=r3000' requires '-mfp32'
arch/mips/vdso/gettimeofday.c:1:0: error: '-march=r3000' requires '-mfp32'
arch/mips/vdso/sigreturn.S:1:0: error: '-march=r3000' requires '-mfp32'
arch/xtensa/include/asm/initialize_mmu.h:41: Error: invalid register 'atomctl' 
for 'wsr' instruction
cc1: error: '-march=r3000' requires '-mfp32'
collect2: error: ld returned 1 exit status
drivers/auxdisplay/img-ascii-lcd.c:384: undefined reference to 
`devm_ioremap_resource'
drivers/bluetooth/hci_intel.c:1199: undefined reference to `devm_gpiod_get'
drivers/extcon/extcon-gpio.c:69: undefined reference to `devm_gpio_request_one'
drivers/extcon/extcon-max3355.c:68: undefined reference to `devm_gpiod_get'
drivers/extcon/extcon-usb-gpio.c:104: undefined reference to `devm_gpiod_get'
drivers/gpu/drm/i915/i915_gem_gtt.c:2367: error: 'gtt_entry' may be used 
uninitialized in this function
drivers/iio/accel/mma9551.c:421: undefined reference to `devm_gpiod_get_index'
drivers/iio/dac/ad5592r-base.c:163: undefined reference to 
`devm_gpiod_get_optional'
drivers/iio/magnetometer/ak8975.c:886: undefined reference to 
`devm_gpio_request_one'
drivers/iio/pressure/bmp280-core.c:985: undefined reference to `devm_gpiod_get'
drivers/iio/pressure/hp03.c:238: undefined reference to `devm_gpiod_get_index'
drivers/iio/proximity/sx9500.c:877: undefined reference to 
`devm_gpiod_get_index'
drivers/leds/leds-gpio.c:101: undefined reference to `devm_gpio_request_one'
drivers/leds/leds-gpio.c:172: undefined reference to `devm_get_gpiod_from_child'
drivers/leds/leds-ktd2692.c:272: undefined reference to `devm_gpiod_get'
drivers/leds/leds-lp55xx-common.c:402: undefined reference to 
`devm_gpio_request_one'
drivers/leds/leds-lp8860.c:383: undefined reference to `devm_gpiod_get_optional'
drivers/leds/leds-lt3593.c:98: undefined reference to `devm_gpio_request_one'
drivers/net/dsa/mv88e6xxx/chip.c:4022: undefined reference to 
`devm_gpiod_get_optional'
drivers/net/phy/at803x.c:283: undefined reference to `devm_gpiod_get_optional'
drivers/net/phy/mdio-gpio.c:177: undefined reference to `devm_gpio_request'
drivers/nfc/fdp/i2c.c:326: undefined reference to `devm_gpiod_get'
drivers/nfc/nfcmrvl/main.c:127: undefined reference to `devm_gpio_request_one'
drivers/nfc/nfcmrvl/main.c:198: undefined reference to `devm_gpio_free'
drivers/nfc/nxp-nci/i2c.c:361: undefined reference to `devm_gpio_request_one'
drivers/nfc/st21nfca/i2c.c:597: undefined reference to `devm_gpio_request_one'
drivers/nfc/st-nci/i2c.c:300: undefined reference to `devm_gpio_request_one'
drivers/power/supply/bq24257_charger.c:876: undefined reference to 
`devm_gpiod_get_optional'
drivers/power/supply/bq24735-charger.c:389: undefined reference to 
`devm_gpiod_get_optional'
drivers/power/supply/bq25890_charger.c:726: undefined reference to 
`devm_gpiod_get_index'
drivers/power/supply/max8903_charger.c:248: undefined reference to 
`devm_gpio_request'
drivers/power/supply/sbs-battery.c:803: undefined reference to 
`devm_gpiod_get_optional'
drivers/pps/clients/pps-gpio.c:125: undefined reference to `devm_gpio_request'
drivers/regulator/lp872x.c:773: undefined reference to `devm_gpio_request_one'
drivers/regulator/max8952.c:249: undefined reference to `devm_gpio_request_one'
drivers/regulator/max8973-regulator.c:715: undefined reference to 
`devm_gpio_request_one'
drivers/regulator/pwm-regulator.c:387: undefined reference to 
`devm_gpiod_get_optional'
drivers/regulator/tps62360-regulator.c:433: undefined reference to 
`devm_gpio_request_one'
ERROR: "bad_dma_ops" [sound/core/snd-pcm.ko] undefined!
ERROR: "bad_dma_ops" [sound/soc/bcm/snd-soc-cygnus.ko] undefined!
ERROR: "devm_get_gpiod_from_child" [drivers/leds/leds-gpio.ko] undefined!
ERROR: "devm_gpiod_get" [drivers/bluetooth/hci_uart.ko] undefined!
ERROR: "devm_gpiod_get" [drivers/extcon/extcon-max3355.ko] undefined!
ERROR: "devm_gpiod_get" [drivers/extcon/extcon-usb-gpio.ko] undefined!
ERROR: "devm_gpiod_get" [drivers/iio/pressure/bmp280.ko] undefined!
ERROR: "devm_gpiod_get" [drivers/leds/leds-ktd2692.ko] undefined!
ERROR: "devm_gpiod_get" [drivers/nfc/fdp/fdp_i2c.ko] undefined!
ERROR: "devm_gpiod_get_index" [drivers/iio/accel/mma9551.ko] undefined!
ERROR: "devm_gpiod_get_index" [drivers/iio/pressure/hp03.ko] undefined!
ERROR: "devm_gpiod_get_index" [drivers/iio/proximity/sx9500.ko] undefined!
ERROR: "devm_gpiod_get_index" [drivers/power/supply/bq25890_charger.ko] 
undefined!
ERROR:

[linus:master] BUILD REGRESSION 2a26d99b251b8625d27aed14e97fc10707a3a81f

2016-10-30 Thread kbuild test robot 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git  master
2a26d99b251b8625d27aed14e97fc10707a3a81f  Merge 
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

arch/ia64/kernel/entry.S:622: Error: Operand 2 of `adds' should be a 14-bit 
integer (-8192-8191)
arch/ia64/kernel/fsys.S:67: Error: Operand 3 of `add' should be a general 
register r0-r3
arch/ia64/kernel/ivt.S:761: Error: Operand 3 of `add' should be a general 
register r0-r3
arch/mips/kernel/mips-cpc.c:47: undefined reference to 
`mips_cpc_default_phys_base'
arch/mips/vdso/elf.S:1:0: error: '-march=r3000' requires '-mfp32'
arch/mips/vdso/gettimeofday.c:1:0: error: '-march=r3000' requires '-mfp32'
arch/mips/vdso/sigreturn.S:1:0: error: '-march=r3000' requires '-mfp32'
arch/xtensa/include/asm/initialize_mmu.h:41: Error: invalid register 'atomctl' 
for 'wsr' instruction
cc1: error: '-march=r3000' requires '-mfp32'
collect2: error: ld returned 1 exit status
drivers/auxdisplay/img-ascii-lcd.c:384: undefined reference to 
`devm_ioremap_resource'
drivers/bluetooth/hci_intel.c:1199: undefined reference to `devm_gpiod_get'
drivers/extcon/extcon-gpio.c:69: undefined reference to `devm_gpio_request_one'
drivers/extcon/extcon-max3355.c:68: undefined reference to `devm_gpiod_get'
drivers/extcon/extcon-usb-gpio.c:104: undefined reference to `devm_gpiod_get'
drivers/gpu/drm/i915/i915_gem_gtt.c:2367: error: 'gtt_entry' may be used 
uninitialized in this function
drivers/iio/accel/mma9551.c:421: undefined reference to `devm_gpiod_get_index'
drivers/iio/dac/ad5592r-base.c:163: undefined reference to 
`devm_gpiod_get_optional'
drivers/iio/magnetometer/ak8975.c:886: undefined reference to 
`devm_gpio_request_one'
drivers/iio/pressure/bmp280-core.c:985: undefined reference to `devm_gpiod_get'
drivers/iio/pressure/hp03.c:238: undefined reference to `devm_gpiod_get_index'
drivers/iio/proximity/sx9500.c:877: undefined reference to 
`devm_gpiod_get_index'
drivers/leds/leds-gpio.c:101: undefined reference to `devm_gpio_request_one'
drivers/leds/leds-gpio.c:172: undefined reference to `devm_get_gpiod_from_child'
drivers/leds/leds-ktd2692.c:272: undefined reference to `devm_gpiod_get'
drivers/leds/leds-lp55xx-common.c:402: undefined reference to 
`devm_gpio_request_one'
drivers/leds/leds-lp8860.c:383: undefined reference to `devm_gpiod_get_optional'
drivers/leds/leds-lt3593.c:98: undefined reference to `devm_gpio_request_one'
drivers/net/dsa/mv88e6xxx/chip.c:4022: undefined reference to 
`devm_gpiod_get_optional'
drivers/net/phy/at803x.c:283: undefined reference to `devm_gpiod_get_optional'
drivers/net/phy/mdio-gpio.c:177: undefined reference to `devm_gpio_request'
drivers/nfc/fdp/i2c.c:326: undefined reference to `devm_gpiod_get'
drivers/nfc/nfcmrvl/main.c:127: undefined reference to `devm_gpio_request_one'
drivers/nfc/nfcmrvl/main.c:198: undefined reference to `devm_gpio_free'
drivers/nfc/nxp-nci/i2c.c:361: undefined reference to `devm_gpio_request_one'
drivers/nfc/st21nfca/i2c.c:597: undefined reference to `devm_gpio_request_one'
drivers/nfc/st-nci/i2c.c:300: undefined reference to `devm_gpio_request_one'
drivers/power/supply/bq24257_charger.c:876: undefined reference to 
`devm_gpiod_get_optional'
drivers/power/supply/bq24735-charger.c:389: undefined reference to 
`devm_gpiod_get_optional'
drivers/power/supply/bq25890_charger.c:726: undefined reference to 
`devm_gpiod_get_index'
drivers/power/supply/max8903_charger.c:248: undefined reference to 
`devm_gpio_request'
drivers/power/supply/sbs-battery.c:803: undefined reference to 
`devm_gpiod_get_optional'
drivers/pps/clients/pps-gpio.c:125: undefined reference to `devm_gpio_request'
drivers/regulator/lp872x.c:773: undefined reference to `devm_gpio_request_one'
drivers/regulator/max8952.c:249: undefined reference to `devm_gpio_request_one'
drivers/regulator/max8973-regulator.c:715: undefined reference to 
`devm_gpio_request_one'
drivers/regulator/pwm-regulator.c:387: undefined reference to 
`devm_gpiod_get_optional'
drivers/regulator/tps62360-regulator.c:433: undefined reference to 
`devm_gpio_request_one'
ERROR: "bad_dma_ops" [sound/core/snd-pcm.ko] undefined!
ERROR: "bad_dma_ops" [sound/soc/bcm/snd-soc-cygnus.ko] undefined!
ERROR: "devm_get_gpiod_from_child" [drivers/leds/leds-gpio.ko] undefined!
ERROR: "devm_gpiod_get" [drivers/bluetooth/hci_uart.ko] undefined!
ERROR: "devm_gpiod_get" [drivers/extcon/extcon-max3355.ko] undefined!
ERROR: "devm_gpiod_get" [drivers/extcon/extcon-usb-gpio.ko] undefined!
ERROR: "devm_gpiod_get" [drivers/iio/pressure/bmp280.ko] undefined!
ERROR: "devm_gpiod_get" [drivers/leds/leds-ktd2692.ko] undefined!
ERROR: "devm_gpiod_get" [drivers/nfc/fdp/fdp_i2c.ko] undefined!
ERROR: "devm_gpiod_get_index" [drivers/iio/accel/mma9551.ko] undefined!
ERROR: "devm_gpiod_get_index" [drivers/iio/pressure/hp03.ko] undefined!
ERROR: "devm_gpiod_get_index" [drivers/iio/proximity/sx9500.ko] undefined!
ERROR: "devm_gpiod_get_index" [drivers/power/supply/bq25890_charger.ko] 
undefined!
ERROR: