Re: build regressions 2013-01-12

[Fengguang Wu <fengguang.wu@intel.com>]

Hi Laurent,

On Mon, Jan 14, 2013 at 09:39:24AM +0100, Laurent Navet wrote:
> Hi,
> maybe a noob's question, but what can we do with these reports ?

This summary of error messages mainly serves to avoid duplicate
reports/fixing. For example, when someone hit a build error, he may
find this email via google and get to know that it has already been
caught and reported by the 0day kernel build test system.

> How do we know which kernel tree is build, where is the .config ?

Most of the error messages are bisected and directly email reported to
the bad commit's author/committers with the tree/branch/commit/config
information, for example:

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git akpm
head:   799385ad830581545b29a54419806af1a9fabb3b
commit: 8a374951fb822d160bfe80b27555e5a6e14c1916 [42/325] sched: /proc/sched_stat fails on very very large machines
config: make ARCH=x86_64 allmodconfig

Another small set of possibly false positive error messages that need
manual checks are reported to kbuild@01.org, which are taken care of
by community volunteers:

        https://lists.01.org/mailman/listinfo/kbuild

That's where you may really help us. :)

> How can I have a chance to reproduce and try to fix these errors ?

The kbuild@01.org email reports will show you the literal commands to
get to the bad commit and code, for example:

git remote add drm-intel git://people.freedesktop.org/~danvet/drm-intel.git
git remote update drm-intel
git checkout 9cc16ce8a74a5aceafa8fa81aac6814b8382b005
vim +6776 drivers/gpu/drm/i915/intel_display.c

Thanks,
Fengguang

> 2013/1/12, Fengguang Wu <fengguang.wu@intel.com>:
> > [errors]
> > include/linux/acpi.h:544:46: error: unknown type name 'acpi_handle'
> > drivers/net/wireless/libertas/cfg.c:2167:30: error: 'lbs_reg_notifier'
> > undeclared (first use in this function)
> > include/linux/acpi.h:544: error: expected ')' before 'handle'
> > ERROR: "snd_soc_dapm_sync" [drivers/regulator/arizona-micsupp.ko]
> > undefined!
> > ERROR: "snd_soc_dapm_disable_pin" [drivers/regulator/arizona-micsupp.ko]
> > undefined!
> > ERROR: "snd_soc_dapm_force_enable_pin"
> > [drivers/regulator/arizona-micsupp.ko] undefined!
> > max1363.c:(.text+0x30b014): undefined reference to
> > `iio_triggered_buffer_cleanup'
> > max1363.c:(.text+0x30b3b9): undefined reference to
> > `iio_triggered_buffer_setup'
> > initramfs.c:(.init.text+0x22c1): undefined reference to `__initramfs_size'
> > cpufreq.c:(.text+0x14b07a): undefined reference to
> > `cpufreq_frequency_table_update_policy_cpu'
> > drivers/cpufreq/cpufreq.c:881:2: error: 'sibling' undeclared (first use in
> > this function)
> > arizona-micsupp.c:(.text+0x9e983): undefined reference to
> > `snd_soc_dapm_force_enable_pin'
> > arizona-micsupp.c:(.text+0x9e9a2): undefined reference to
> > `snd_soc_dapm_disable_pin'
> > arizona-micsupp.c:(.text+0x9e9b1): undefined reference to
> > `snd_soc_dapm_sync'
> >
> > [warnings]
> > drivers/cpufreq/cpufreq.c:812: warning: 'cpufreq_add_policy_cpu' defined but
> > not used
> > drivers/cpufreq/cpufreq.c:881:2: warning: left-hand operand of comma
> > expression has no effect [-Wunused-value]
> >
> > [sparse]
> > include/acpi/actbl3.h:526:35: sparse: expected ; at end of declaration
> > drivers/usb/misc/usb3503.c:181:5: sparse: symbol 'usb3503_probe' was not
> > declared. Should it be static?
> > drivers/acpi/power.c:104:28: sparse: symbol 'acpi_power_get_context' was not
> > declared. Should it be static?
> > drivers/md/persistent-data/dm-transaction-manager.c:28:9: sparse:
> > preprocessor token HASH_SIZE redefined
> > drivers/block/mtip32xx/mtip32xx.c:4029:1: sparse: symbol 'mtip_workq_sdbf0'
> > was not declared. Should it be static?
> > drivers/block/mtip32xx/mtip32xx.c:4030:1: sparse: symbol 'mtip_workq_sdbf1'
> > was not declared. Should it be static?
> > drivers/block/mtip32xx/mtip32xx.c:4031:1: sparse: symbol 'mtip_workq_sdbf2'
> > was not declared. Should it be static?
> > drivers/block/mtip32xx/mtip32xx.c:4032:1: sparse: symbol 'mtip_workq_sdbf3'
> > was not declared. Should it be static?
> > drivers/block/mtip32xx/mtip32xx.c:4033:1: sparse: symbol 'mtip_workq_sdbf4'
> > was not declared. Should it be static?
> > drivers/block/mtip32xx/mtip32xx.c:4034:1: sparse: symbol 'mtip_workq_sdbf5'
> > was not declared. Should it be static?
> > drivers/block/mtip32xx/mtip32xx.c:4035:1: sparse: symbol 'mtip_workq_sdbf6'
> > was not declared. Should it be static?
> > drivers/block/mtip32xx/mtip32xx.c:4036:1: sparse: symbol 'mtip_workq_sdbf7'
> > was not declared. Should it be static?
> > drivers/block/mtip32xx/mtip32xx.c:1726:5: sparse: symbol 'mtip_send_trim'
> > was not declared. Should it be static?
> > security/integrity/digsig.c:52:47: sparse: incorrect type in argument 1
> > (different base types)
> > drivers/net/wireless/libertas/cfg.c:2167:37: sparse: undefined identifier
> > 'lbs_reg_notifier'
> >
> > [smatch]
> > sound/pci/hda/hda_codec.c:3433 snd_hda_codec_write_cache() error: we
> > previously assumed 'c' could be null (see line 3430)
> > sound/pci/hda/hda_generic.c:1529 indep_hp_put() warn: inconsistent returns
> > mutex:&spec->pcm_mutex: locked (1526) unlocked (1517,1529)
> > sound/pci/hda/hda_hwdep.c:487 parse_hints() warn: inconsistent returns
> > mutex:&codec->user_mutex: locked (478) unlocked (447,449,452,457,487)
> > drivers/usb/misc/usb3503.c:238 usb3503_probe() error: we previously assumed
> > 'pdata' could be null (see line 196)
> > sound/soc/soc-dapm.c:3043 snd_soc_dapm_new_control() warn: maybe use &&
> > instead of &
> >
> > ---
> > 0-DAY kernel build testing backend         Open Source Technology Center
> > Fengguang Wu, Yuanhan Liu                              Intel Corporation
> > --
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> 
> 
> -- 
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> « You cannot solve current problems with current thinking. Current
> problems are the result of current thinking »