Hi again,

Le 21/08/2020 à 10:22, Giuseppe Sacco a écrit :
Hello Cristophe,

Il giorno ven, 21/08/2020 alle 08.55 +0200, Christophe Leroy ha
Hi Giuseppe,

Le 08/07/2020 à 20:44, Christophe Leroy a écrit :

Le 08/07/2020 à 19:36, Giuseppe Sacco a écrit :
Hi Cristophe,

Il giorno mer, 08/07/2020 alle 19.09 +0200, Christophe Leroy ha
What's the result with:

LANG=C make ARCH=powerpc CROSS_COMPILE=powerpc-linux- vmlinux

$ LANG=C make ARCH=powerpc CROSS_COMPILE=powerpc-linux- vmlinux
    CALL    scripts/checksyscalls.sh
    CALL    scripts/atomic/check-atomics.sh
    CHK     include/generated/compile.h
    CC      kernel/module.o
kernel/module.c: In function 'do_init_module':
kernel/module.c:3593:2: error: implicit declaration of function
'module_enable_ro'; did you mean 'module_enable_x'? [-Werror=implicit-
   3593 |  module_enable_ro(mod, true);
        |  ^~~~~~~~~~~~~~~~
        |  module_enable_x
cc1: some warnings being treated as errors
make[1]: *** [scripts/Makefile.build:267: kernel/module.o] Error 1
make: *** [Makefile:1735: kernel] Error 2

So, should I 'git bisect skip'?

Ah yes, I had the exact same problem last time I bisected.

So yes do 'git bisect skip'. You'll probably hit this problem half a
dozen of times, but at the end you should get a usefull bisect anyway.

Were you able to progress ?

Very slowly. I am still working on it, currently at recompile #276.
git-bisect states that I have still about 700 commits to check, but the
real problem is that more than 60% of built kernels crash even before
displaying the cpu_freq message (probably another long lasting bug
hides the one I am looking for). All these skipped kernels make
bisecting very very slow.

A short video about the problem I face when I skip the build is here:

Maybe the easiest would be first to locate this issue. Can you send me the vmlinux and the .config matching the Oops in the video ?

And also the output of git bisect log ?


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