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SubjectRe: Linux 4.16-rc1: regression bisected, Debian kernel package tool make-kpkg stalls indefinitely during kernel build due to commit "kconfig: remove check_stdin()"
2018-02-13 12:00 GMT+09:00 Woody Suwalski <terraluna977@gmail.com>:
> Sander Eikelenboom wrote:
>>
>> L.S.,
>>
>> The Debian kernel-package tool make-kpkg for easy building of upstream
>> kernels on Debian fails with linux 4.16-rc1.
>>
>> The tool (perl script) while invoked with:
>> make-kpkg --initrd --append_to_version -20180212 kernel_image
>>
>> On a git tree with a .config from the previous kernel release, so new
>> KConfig questions have to be asked on new or changed options.
>>
>> The script stalls indefinitely while it seems to be excuting:
>> exec make kpkg_version=13.018+nmu1 -f
>> /usr/share/kernel-package/ruleset/minimal.mk debian
>> APPEND_TO_VERSION=-t440s-20180212 INITRD=YES
>>
>> After using ctrl-c to break out it, i get:
>> ^CFailed to create a ./debian directory: No such file or directory at
>> /usr/bin/make-kpkg line 970.
>>
>> Bisection turned up as culprit:
>> commit d2a04648a5dbc3d1d043b35257364f0197d4d868
>> kconfig: remove check_stdin()
>> Except silentoldconfig, valid_stdin is 1, so check_stdin() is
>> no-op.
>> oldconfig and silentoldconfig work almost in the same way except
>> that
>> the latter generates additional files under include/. Both ask users
>> for input for new symbols.
>> I do not know why only silentoldconfig requires stdio be tty.
>> $ rm -f .config; touch .config
>> $ yes "" | make oldconfig > stdout
>> $ rm -f .config; touch .config
>> $ yes "" | make silentoldconfig > stdout
>> make[1]: *** [silentoldconfig] Error 1
>> make: *** [silentoldconfig] Error 2
>> $ tail -n 4 stdout
>> Console input/output is redirected. Run 'make oldconfig' to update
>> configuration.
>> scripts/kconfig/Makefile:40: recipe for target
>> 'silentoldconfig' failed
>> Makefile:507: recipe for target 'silentoldconfig' failed
>> Redirection is useful, for example, for testing where we want to
>> give
>> particular key inputs from a test file, then check the result.
>> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
>> Reviewed-by: Ulf Magnusson <ulfalizer@gmail.com>
>>
>> Reverting this specific commit makes make-kpkg work again as usual.
>>
>> Version of the kernel-package used:
>> ii kernel-package
>> 13.018+nmu1
>>
>>
>> I also cc'ed the Debian developer who maintains the kernel-package
>> package: Manoj Srivastava
>>
>> --
>> Sander
>>
> I have noticed today the same - the kernel-build blockage was in (as I
> recall)
> srcipts/kconfig/conf -s --silentoldconfig Kbuild
>
> I have bypassed it by regenerating the .config "by hand"...


silentoldconfig asks you values for new symbols.
So, you must answer questions to proceed.


How does 'make-kpkg' handle silentoldconfig?

Re-direct stdio, then make it forcibly fail?



--
Best Regards
Masahiro Yamada

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