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Thread: Kernel 5.15 RC (Release Candidate) series

  1. #1
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    Kernel 5.15 RC (Release Candidate) series

    Hi All,

    Just starting the kernel 5.15-rc series thread. The kernel has been released on kernel.org, and I assume will appear shortly on the Ubuntu mainline PPA.

    I haven't compiled it yet.

    The usual link back trail to previous rc series threads:
    5.14,5.13, 5.12, 5.11, 5.10, 5.9, 5.8, 5.7, 5.6, 5.5, 5.4, 5.3, 5.2, 5.1, 5.0, 4.20, 4.19 ?, 4.18, 4.17, 4.16, 4.15, 4.14.

    EDIT 1: O.K. so compiling using my .config file from kernel 5.14:
    Code:
    ...
     CC [M]  drivers/spmi/spmi.o
      CC [M]  drivers/target/target_core_device.o
      CC [M]  drivers/target/target_core_fabric_configfs.o
    make[5]: *** [scripts/Makefile.build:540: drivers/staging] Error 2
    make[5]: *** Waiting for unfinished jobs....
      CC [M]  drivers/target/target_core_fabric_lib.o
      CC [M]  drivers/net/dsa/sja1105/sja1105_vl.o
    ...
      LD [M]  drivers/mtd/ubi/ubi.o
      LD [M]  drivers/target/iscsi/cxgbit/cxgbit.o
    make[4]: *** [Makefile:1874: drivers] Error 2
    make[3]: *** [debian/rules:7: build-arch] Error 2
    dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2
    make[2]: *** [scripts/Makefile.package:83: bindeb-pkg] Error 2
    make[1]: *** [Makefile:1582: bindeb-pkg] Error 2
    make: *** [Makefile:350: __build_one_by_one] Error 2
    
    real    14m28.365s
    user    157m55.412s
    sys     13m49.699s
    Sigh...

    EDIT 2: Well there are only 3 commits involved so it shouldn't be too difficult to find. My work:
    Code:
    doug@s19:~/temp-k-git/linux$ git log --oneline scripts/Makefile.build | head -5
    a8390ba9ddce kbuild: remove stale *.symversions
    f01ac2a15218 kbuild: remove unused quiet_cmd_update_lto_symversions
    850ded46c642 kbuild: Fix TRIM_UNUSED_KSYMS with LTO_CLANG
    1d11053dc630 Kbuild: lto: fix module versionings mismatch in GNU make 3.X
    81361b837a34 Merge tag 'kbuild-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
    doug@s19:~/temp-k-git/linux$ git tag --contains 1d11053dc630
    v5.14
    v5.14-rc2
    v5.14-rc3
    v5.14-rc4
    v5.14-rc5
    v5.14-rc6
    v5.14-rc7
    v5.15-rc1
    doug@s19:~/temp-k-git/linux$ git tag --contains f01ac2a15218
    v5.15-rc1
    doug@s19:~/temp-k-git/linux$ git tag --contains 850ded46c642
    v5.15-rc1
    EDIT 3: I think I missed the real problem:
    Code:
      CC [M]  drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.o
    drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c: In function ‘input_system_configure_channel_sensor’:
    drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c:1649:1: error: control reaches end of non-void function [-Werror=return-type]
     1649 | }
          | ^
      CC [M]  drivers/comedi/comedi_pci.o
      CC [M]  drivers/comedi/comedi_pcmcia.o
      CC [M]  drivers/rpmsg/rpmsg_core.o
    cc1: some warnings being treated as errors
    EDIT 4: Reverting the last 2 edits of that file results in compiling completing:

    Code:
    doug@s19:~/temp-k-git/linux$ git log --oneline drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c | head -7
    11e0e28faa85 Revert "media: atomisp: remove dublicate code"
    d4796ce7fe29 Revert "media: atomisp: remove useless returns"
    264f59089914 media: atomisp: remove useless returns
    728a5c64ae5f media: atomisp: remove dublicate code
    9763267eda9d media: atomisp: remove useless breaks
    284be89176e5 media: atomisp: de-duplicate names at *_input_system_global.h
    39bc26e49a5f media: atomisp: unify INPUT error return type
    EDIT 5: I see the Ubuntu Mainline PPA compile failed with the same error. I couldn't work on this more at the time, so surely someone has complained upstream by now. For example, here and here, which is weird, because the referenced patches are not in the tree.

    EDIT 6:
    Code:
    doug@s19:~$ uname -a
    Linux s19 5.15.0-rc1-stock #944 SMP PREEMPT Tue Sep 14 07:20:53 PDT 2021 x86_64 x86_64 x86_64 GNU/Linux
    For the above compile I simply got rid of the problematic code:
    Code:
    doug@s19:~/temp-k-git/linux$ scripts/config --disable INTEL_ATOMISP
    Last edited by Doug S; September 14th, 2021 at 04:22 PM.
    Any follow-up information on your issue would be appreciated. Please have the courtesy to report back.

  2. #2
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    Re: Kernel 5.15 RC (Release Candidate) series

    Code:
    linux-headers-5.15.0-051500rc1daily20210918/now 5.15.0-051500rc1daily20210918.202109172201 all [инсталиран,месни]linux-headers-5.15.0-051500rc1daily20210918-generic/now 5.15.0-051500rc1daily20210918.202109172201 amd64 [инсталиран,месни]
    linux-headers-5.15.0-051500rc1drmtip20210918/now 5.15.0-051500rc1drmtip20210918.202109180201 all [инсталиран,месни]
    linux-headers-5.15.0-051500rc1drmtip20210918-generic/now 5.15.0-051500rc1drmtip20210918.202109180201 amd64 [инсталиран,месни]
    linux-headers-5.15.0-1-generic/impish,now 5.15.0-1.1 amd64 [инсталиран,аутоматски]
    linux-image-5.15.0-1-generic/impish,now 5.15.0-1.1 amd64 [инсталиран,аутоматски]
    linux-image-unsigned-5.15.0-051500rc1daily20210918-generic/now 5.15.0-051500rc1daily20210918.202109172201 amd64 [инсталиран,месни]
    linux-image-unsigned-5.15.0-051500rc1drmtip20210918-generic/now 5.15.0-051500rc1drmtip20210918.202109180201 amd64 [инсталиран,месни]
    linux-modules-5.15.0-051500rc1daily20210918-generic/now 5.15.0-051500rc1daily20210918.202109172201 amd64 [инсталиран,месни]
    linux-modules-5.15.0-051500rc1drmtip20210918-generic/now 5.15.0-051500rc1drmtip20210918.202109180201 amd64 [инсталиран,месни]
    linux-modules-5.15.0-1-generic/impish,now 5.15.0-1.1 amd64 [инсталиран,аутоматски]
    linux-modules-extra-5.15.0-1-generic/impish,now 5.15.0-1.1 amd64 [инсталиран,аутоматски]
    linux-unstable-headers-5.15.0-1/impish,impish,now 5.15.0-1.1 all [инсталиран,аутоматски]
    linux-headers-5.15.0-051500rc1drmintelnext20210918/now 5.15.0-051500rc1drmintelnext20210918.202109180201 all [инсталиран,месни]
    linux-headers-5.15.0-051500rc1drmintelnext20210918-generic/now 5.15.0-051500rc1drmintelnext20210918.202109180201 amd64 [инсталиран,месни]
    linux-image-unsigned-5.15.0-051500rc1drmintelnext20210918-generic/now 5.15.0-051500rc1drmintelnext20210918.202109180201 amd64 [инсталиран,месни]
    linux-modules-5.15.0-051500rc1drmintelnext20210918-generic/now 5.15.0-051500rc1drmintelnext20210918.202109180201 amd64 [инсталиран,месни]
    Looks OK and fast.
    Last edited by zika; September 18th, 2021 at 06:45 AM.
    Ignota nulla curatio morbi.
    Quod nocet saepe docet.

  3. #3
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    Re: Kernel 5.15 RC (Release Candidate) series

    Thanks zika. I have been watching the daily. The code itself still has has not had the patch, that has existed since August 2nd, applied. They have disabled compiling the problematic code.

    Code:
    doug@s19:~/temp-k-git/linux$ scripts/diffconfig .config-5.14 .config | grep INTEL_ATOM
     INTEL_ATOMISP y -> n
    +INTEL_ATOMISP2_PDX86 y
    +INTEL_ATOMISP2_PM n
    Where .config-5.14 is based on config-5.14.0-051400-lowlatency and .config is based on .config-5.15.0-051500rc1daily20210918-lowlatency
    Quote Originally Posted by zika View Post
    Looks OK and fast.
    Do You have an example of what is faster? Just curious, and would like to try myself.
    Any follow-up information on your issue would be appreciated. Please have the courtesy to report back.

  4. #4
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    Re: Kernel 5.15 RC (Release Candidate) series

    Quote Originally Posted by Doug S View Post
    Do You have an example of what is faster? Just curious, and would like to try myself.
    Not yet, this was just my first impression (Saturday...) I've stopped timing things quite some time ago so... Most of my impressions come from wip kernel 5.15 and not from those from Mainline...
    Ignota nulla curatio morbi.
    Quod nocet saepe docet.

  5. #5
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    Re: Kernel 5.15 RC (Release Candidate) series

    Kernel 5.15-rc2 is available.

    Recall, for the last 2 months I have been having BIOS issues related to BIOS forcing HWP (A.K.A. Intel Speed Shift) force enabled, rather than letting the OS (linux) decide. This revealed some issues with the CPU frequency scaling drivers, both acpi-cpufreq and intel_pstate), which assumed the OS had control of enabling HWP or not. Kernel 5.15-rc2 contains a fix:

    Code:
    commit d9a7e9df731670acdc69e81748941ad338f47fab
    Author: Doug Smythies
    Date:   Sun Sep 12 11:50:29 2021 -0700
    
        cpufreq: intel_pstate: Override parameters if HWP forced by BIOS
    
        If HWP has been already been enabled by BIOS, it may be
        necessary to override some kernel command line parameters.
        Once it has been enabled it requires a reset to be disabled.
    By the way, ASUS sent me a special test BIOS, with the issue fixed. I don't know how long some official version will take.

    Code:
    doug@s19:~$ uname -a
    Linux s19 5.15.0-rc2-stock #946 SMP PREEMPT Mon Sep 20 07:24:32 PDT 2021 x86_64 x86_64 x86_64 GNU/Linux
    Any follow-up information on your issue would be appreciated. Please have the courtesy to report back.

  6. #6
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    Re: Kernel 5.15 RC (Release Candidate) series

    Kernel 5.15-rc3 is available from the Ubuntu mainline PPA and kernel.org.

    I have only been running it for a couple of minutes:

    Code:
    doug@s19:~$ uname -a
    Linux s19 5.15.0-rc3-stock #948 SMP PREEMPT Sun Sep 26 20:11:18 PDT 2021 x86_64 x86_64 x86_64 GNU/Linux
    Any follow-up information on your issue would be appreciated. Please have the courtesy to report back.

  7. #7
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    Re: Kernel 5.15 RC (Release Candidate) series

    O.K. so, mainline PPA kernel 5.15-rc4 amd64 compile failed for the same reasons as earlier in this series. However, the daily for today compiled fine. I see that fix from August 2nd was finally applied.

    Code:
    f6274b06e326 (HEAD -> master, origin/master, origin/HEAD) Merge tag 'linux-kselftest-fixes-5.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
    84b3e42564ac Merge tag 'media/v5.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
    b60be028fc1a Merge tag 'ovl-fixes-5.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
    df5c18838ea8 Merge tag 'mips-fixes_5.15_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
    206704a1fe0b media: atomisp: restore missing 'return' statement
    9e1ff307c779 (tag: v5.15-rc4) Linux 5.15-rc4
    9b2f72cc0aa4 elf: don't use MAP_FIXED_NOREPLACE for elf interpreter mappings
    Code:
    doug@s19:~/temp-k-git/linux$ git show 206704a1fe0b
    commit 206704a1fe0bcaaa036d3e90358bb168fac8bea1
    Author: Arnd Bergmann <arnd@arndb.de>
    Date:   Mon Aug 2 16:38:14 2021 +0200
    
        media: atomisp: restore missing 'return' statement
    
        The input_system_configure_channel_sensor() function lost its final
        return code in a previous patch:
    
        drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c: In function 'input_system_configure_channel_sensor':
        drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c:1649:1: error: control reaches end of non-void function [-Werror=return-type]
    
        Restore what was there originally.
    
        Link: https://lore.kernel.org/linux-media/20210802143820.1150099-1-arnd@kernel.org
        Fixes: 728a5c64ae5f ("media: atomisp: remove dublicate code")
        Signed-off-by: Arnd Bergmann <arnd@arndb.de>
        Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
        Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
    
    diff --git a/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c b/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c
    index 8e085dda0c18..712e01c37870 100644
    --- a/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c
    +++ b/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c
    @@ -1646,6 +1646,8 @@ static input_system_err_t input_system_configure_channel_sensor(
            default:
                    return INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;
            }
    +
    +       return INPUT_SYSTEM_ERR_NO_ERROR;
     }
    
     // Test flags and set structure.
    Any follow-up information on your issue would be appreciated. Please have the courtesy to report back.

  8. #8
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    Re: Kernel 5.15 RC (Release Candidate) series

    Mainline kernel 5.15-rc5 is available. It makes sense that it compiled properly, since we know the required patch, for the kernel configuration that Ubuntu seems to want to use, finally got added just after -rc4 was released.

    Code:
    doug@s19:~$ uname -a
    Linux s19 5.15.0-rc5-stock #950 SMP PREEMPT Mon Oct 11 08:36:13 PDT 2021 x86_64 x86_64 x86_64 GNU/Linux
    Last edited by Doug S; October 12th, 2021 at 03:26 PM.
    Any follow-up information on your issue would be appreciated. Please have the courtesy to report back.

  9. #9
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    Re: Kernel 5.15 RC (Release Candidate) series

    Mainline PPA Kernel 5.15 is available.
    I only have a few minutes running it so far.

    Code:
    doug@s19:~$ uname -a
    Linux s19 5.15.0-stock #952 SMP PREEMPT Sun Oct 31 16:44:20 PDT 2021 x86_64 x86_64 x86_64 GNU/Linux
    Any follow-up information on your issue would be appreciated. Please have the courtesy to report back.

  10. #10
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    Re: Kernel 5.15 RC (Release Candidate) series

    Running 5.15 too. So far so good....
    "The piano ain't got no wrong notes."

    -Thelonious Monk

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