Re: [gentoo-user] kernel 4.9.77 error segfault in compile.

[Corbin Bird]

On 01/23/2018 01:42 AM, Alexander Kapshuk wrote:
> On Tue, Jan 23, 2018 at 4:34 AM, Corbin Bird <corbinbird@×××××××.net> wrote:
>> On 01/22/2018 11:56 AM, Rich Freeman wrote:
>>> On Mon, Jan 22, 2018 at 12:11 PM, Alexander Kapshuk
>>> <alexander.kapshuk@×××××.com> wrote:
>>>> On Mon, Jan 22, 2018 at 5:51 PM, Corbin Bird <corbinbird@×××××××.net> wrote:
>>>>> Anyone else getting this error? ( kernel 4.9.77 )
>>>>>
>>>>>>   CC      fs/ext4/mballoc.o
>>>>>>   CC      fs/ext4/block_validity.o
>>>>>>   CC      fs/ext4/move_extent.o
>>>>>>   CC      fs/ext4/mmp.o
>>>>>>   CC      fs/ext4/indirect.o
>>>>>> fs/ext4/indirect.o: warning: objtool: ext4_clear_blocks()+0x242: can't
>>>>>> find jump dest instruction at .text+0x56c
>>>>>>   CC      fs/ext4/extents_status.o
>>>>>> /bin/sh: line 1: 31735 Segmentation fault      ./tools/objtool/objtool
>>>>>> check "fs/ext4/extents_status.o"
>>>>>> make[2]: *** [scripts/Makefile.build:294: fs/ext4/extents_status.o]
>>>>>> Error 139
>>>>>> make[1]: *** [scripts/Makefile.build:544: fs/ext4] Error 2
>>>>>> make: *** [Makefile:995: fs] Error 2
>>>>> Corbin
>>>>>
>>>>>
>>>> Based on the output you supplied, objtool isn't happy with
>>>> fs/ext4/indirect.o and fs/ext4/extents_status.o.
>>>> Did you do 'make clean' prior to building the kernel?
>>>> If you did, it might be worth doing a 'make mrproper' before
>>>> rebuilding the kernel.
>>>> Don't forget to back up your .config before running mrproper.
>>>>
>>> While this is going to cause a bit more building, I personally tend to
>>> redirect kernel build output.  I add O=/var/tmp/linux to all my make
>>> commands, which leaves /usr/src untouched and builds faster besides
>>> (tmpfs).
>>>
>>> The main downsides to this are:
>>> 1.  Make can't re-use objects from previous builds, so rebuilds will
>>> go slower.  Though, IMO this is worthwhile if re-using those objects
>>> causes issues (which I assume is due to imperfect makefiles).
>>> 2.  When building packages that install kernel modules the prepared
>>> sources won't exist.  This requires going back and re-preparing them
>>> (make O=/var/tmp/linux modules_prepare).  For packages like zfs-kmod
>>> that use Module.symvers this is even more painful as you can only get
>>> that by rebuilding the whole thing.
>>>
>> Tried both approaches ... the results :
>>> make distclean
>>> make mrproper
>>> --> copy over .config
>>> make modules_prepare
>>> make && make modules_install
>>>
>>>   CC      fs/ext4/block_validity.o
>>>   CC      fs/ext4/move_extent.o
>>>   CC      fs/ext4/mmp.o
>>>   CC      fs/ext4/indirect.o
>>> fs/ext4/indirect.o: warning: objtool: ext4_clear_blocks()+0x242: can't
>>> find jump dest instruction at .text+0x56c
>>>   CC      fs/ext4/extents_status.o
>>> /bin/sh: line 1: 24095 Segmentation fault      ./tools/objtool/objtool
>>> check "fs/ext4/extents_status.o"
>>> make[2]: *** [scripts/Makefile.build:294: fs/ext4/extents_status.o]
>>> Error 139
>>> make[1]: *** [scripts/Makefile.build:544: fs/ext4] Error 2
>>> make: *** [Makefile:995: fs] Error 2
>>>
>>>
>> Try 2 :
>>> make distclean
>>> make mrproper
>>> --> copy over .config
>>> make O=/var/tmp/linux modules_prepare
>>> make O=/var/tmp/linux && make O=/var/tmp/linux modules_install
>>>
>>>   CC      fs/ext4/move_extent.o
>>>   CC      fs/ext4/mmp.o
>>>   CC      fs/ext4/indirect.o
>>> fs/ext4/indirect.o: warning: objtool: ext4_clear_blocks()+0x242: can't
>>> find jump dest instruction at .text+0x56c
>>>   CC      fs/ext4/extents_status.o
>>> /bin/sh: line 1: 21028 Segmentation fault      ./tools/objtool/objtool
>>> check "fs/ext4/extents_status.o"
>>> make[3]: *** [/usr/src/linux-4.9.77-gentoo/scripts/Makefile.build:294:
>>> fs/ext4/extents_status.o] Error 139
>>> make[2]: *** [/usr/src/linux-4.9.77-gentoo/scripts/Makefile.build:544:
>>> fs/ext4] Error 2
>>> make[1]: *** [/usr/src/linux-4.9.77-gentoo/Makefile:995: fs] Error 2
>>> make[1]: Leaving directory '/var/tmp/linux'
>>> make: *** [Makefile:150: sub-make] Error 2
>> Try 2 gave an error warning about needing an 'make mrproper' ... the error :
>>>   CHK     include/config/kernel.release
>>>   UPD     include/config/kernel.release
>>>   Using /usr/src/linux-4.9.77-gentoo as source for kernel
>>>   /usr/src/linux-4.9.77-gentoo is not clean, please run 'make mrproper'
>>>   in the '/usr/src/linux-4.9.77-gentoo' directory.
>>> make[1]: *** [/usr/src/linux-4.9.77-gentoo/Makefile:1021: prepare3]
>>> Error 1
>>> make[1]: Leaving directory '/var/tmp/linux'
>>> make: *** [Makefile:150: sub-make] Error 2
>> So ... I followed directions :
>>> Darkstar /usr/src/linux # cd /usr/src/linux-4.9.77-gentoo
>>> Darkstar /usr/src/linux-4.9.77-gentoo # make mrproper
>>>   CLEAN   scripts/basic
>>>   CLEAN   scripts/kconfig
>>>   CLEAN   .config
>> Still get the same error ...
>>
>> Corbin
>>
> Is this a distribution supplied kernel or vanilla or one with your own
> customisations/modifications?
>

Using 'sys-kernel/gentoo-sources-4.9.77' with USE flags : modules
symlink experimental.
Both gcc && binutils have been upgraded to the latest stable / no signs
of them giving trouble.

Beginning to think that something corrupted during the emerge process ...

Corbin