linux-kernel - Re: Linux 6.2-rc2

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Date:   Mon, 23 Jan 2023 18:09:27 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     SeongJae Park <sj@...nel.org>
Cc:     Ard Biesheuvel <ardb@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Guenter Roeck <linux@...ck-us.net>,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>, Arnd Bergmann <arnd@...db.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Palmer Dabbelt <palmer@...osinc.com>
Subject: Re: Linux 6.2-rc2

On Wed, Jan 11, 2023 at 4:14 AM SeongJae Park <sj@...nel.org> wrote:
>
> Hi Masahiro,
>
> On Wed, 11 Jan 2023 03:39:58 +0900 Masahiro Yamada <masahiroy@...nel.org> wrote:
>
> > On Tue, Jan 10, 2023 at 9:32 AM SeongJae Park <sj@...nel.org> wrote:
> > >
> > > On Tue, 3 Jan 2023 11:58:48 +0100 Ard Biesheuvel <ardb@...nel.org> wrote:
> > >
> > > > On Tue, 3 Jan 2023 at 03:13, Linus Torvalds
> > > > <torvalds@...ux-foundation.org> wrote:
> > > > >
> > > > > On Mon, Jan 2, 2023 at 5:45 PM Guenter Roeck <linux@...ck-us.net> wrote:
> > > > > >
> > > [...]
> > > > --- a/include/asm-generic/vmlinux.lds.h
> > > > +++ b/include/asm-generic/vmlinux.lds.h
> > > > @@ -896,7 +896,7 @@
> > > >   * Otherwise, the type of .notes section would become PROGBITS
> > > > instead of NOTES.
> > > >   */
> > > >  #define NOTES                                                          \
> > > > -       /DISCARD/ : { *(.note.GNU-stack) }                              \
> > > > +       .note.GNU-stack : { *(.note.GNU-stack) }                        \
> > > >         .notes : AT(ADDR(.notes) - LOAD_OFFSET) {                       \
> > > >                 BOUNDED_SECTION_BY(.note.*, _notes)                     \
> > > >         } NOTES_HEADERS                                                 \
> > > >
> > > > The .note.GNU-stack has zero size, so the result should be the same.
> > > >
> > >
> > > This also fixes ARCH=um build error on my system.
> > >
> > > Tested-by: SeongJae Park <sj@...nel.org>
> >
> >
> >
> > I am able to build ARCH=um defconfig at least.
> >
> > Can you provide the steps to reproduce the build error?
>
> I do the build for kunit test, like below.
>
>     mkdir ../kunit.out
>     echo "
>         CONFIG_KUNIT=y
>
>         CONFIG_DAMON=y
>         CONFIG_DAMON_KUNIT_TEST=y
>
>         CONFIG_DAMON_VADDR=y
>         CONFIG_DAMON_VADDR_KUNIT_TEST=y
>
>         CONFIG_DEBUG_FS=y
>         CONFIG_DAMON_DBGFS=y
>         CONFIG_DAMON_DBGFS_KUNIT_TEST=y
>     CONFIG_DAMON_PADDR=y" > ../kunit.out/.kunitconfig
>     ./tools/testsing/kunit/kunit.py run --build_dir ../kunit.out
>     [19:12:37] Configuring KUnit Kernel ...
>     [19:12:37] Building KUnit Kernel ...
>     Populating config with:
>     $ make ARCH=um O=../kunit.out/ olddefconfig
>     Building with:
>     $ make ARCH=um O=../kunit.out/ --jobs=36
>     ERROR:root:`.exit.text' referenced in section `.uml.exitcall.exit' of arch/um/drivers/virtio_uml.o: defined in discarded section `.exit.text' of arch/um/drivers/virtio_uml.o
>     collect2: error: ld returned 1 exit status
>     make[2]: *** [/home/sjpark/linux/scripts/Makefile.vmlinux:34: vmlinux] Error 1
>     make[1]: *** [/home/sjpark/linux/Makefile:1252: vmlinux] Error 2
>     make: *** [Makefile:242: __sub-make] Error 2
>
>
> Thanks,
> SJ
>


I did not see the error, though.

The test seems to have succeeded.




masahiro@zoe:~/ref/linux(master)$ cat ../kunit.out/.kunitconfig
CONFIG_KUNIT=y

CONFIG_DAMON=y
CONFIG_DAMON_KUNIT_TEST=y

CONFIG_DAMON_VADDR=y
CONFIG_DAMON_VADDR_KUNIT_TEST=y

CONFIG_DEBUG_FS=y
CONFIG_DAMON_DBGFS=y
CONFIG_DAMON_DBGFS_KUNIT_TEST=y
CONFIG_DAMON_PADDR=y
masahiro@zoe:~/ref/linux(master)$ ./tools/testing/kunit/kunit.py run
--build_dir ../kunit.out
[18:05:19] Configuring KUnit Kernel ...
Regenerating .config ...
Populating config with:
$ make ARCH=um O=../kunit.out olddefconfig
[18:05:22] Building KUnit Kernel ...
Populating config with:
$ make ARCH=um O=../kunit.out olddefconfig
Building with:
$ make ARCH=um O=../kunit.out --jobs=16
[18:05:47] Starting KUnit Kernel (1/1)...
[18:05:47] ============================================================
[18:05:47] ==================== damon (9 subtests) ====================
[18:05:47] [PASSED] damon_test_target
[18:05:47] [PASSED] damon_test_regions
[18:05:47] [PASSED] damon_test_aggregate
[18:05:47] [PASSED] damon_test_split_at
[18:05:47] [PASSED] damon_test_merge_two
[18:05:47] [PASSED] damon_test_merge_regions_of
[18:05:47] [PASSED] damon_test_split_regions_of
[18:05:47] [PASSED] damon_test_ops_registration
[18:05:47] [PASSED] damon_test_set_regions
[18:05:47] ====================== [PASSED] damon ======================
[18:05:47] ============== damon-operations (6 subtests) ===============
[18:05:47] [PASSED] damon_test_three_regions_in_vmas
[18:05:47] [PASSED] damon_test_apply_three_regions1
[18:05:47] [PASSED] damon_test_apply_three_regions2
[18:05:47] [PASSED] damon_test_apply_three_regions3
[18:05:47] [PASSED] damon_test_apply_three_regions4
[18:05:47] [PASSED] damon_test_split_evenly
[18:05:47] ================ [PASSED] damon-operations =================
[18:05:47] ================= damon-dbgfs (3 subtests) =================
[18:05:47] [PASSED] damon_dbgfs_test_str_to_ints
[18:05:47] [PASSED] damon_dbgfs_test_set_targets
[18:05:47] [PASSED] damon_dbgfs_test_set_init_regions
[18:05:47] =================== [PASSED] damon-dbgfs ===================
[18:05:47] ============================================================
[18:05:47] Testing complete. Ran 18 tests: passed: 18
[18:05:47] Elapsed time: 28.194s total, 3.017s configuring, 25.058s
building, 0.086s running









-- 
Best Regards
Masahiro Yamada