* vmlinux link failure on ia64 with zstd
@ 2020-09-13 19:51 Ben Hutchings
2020-09-14 19:12 ` Nick Terrell
2021-03-23 16:28 ` John Paul Adrian Glaubitz
0 siblings, 2 replies; 10+ messages in thread
From: Ben Hutchings @ 2020-09-13 19:51 UTC (permalink / raw)
To: linux-ia64
[-- Attachment #1: Type: text/plain, Size: 1371 bytes --]
Enabling CONFIG_RD_ZSTD (which is enabled by default) resulted in a
link failure on ia64:
+ ld -r -o vmlinux.o --whole-archive arch/ia64/kernel/head.o init/built-in.a usr/built-in.a arch/ia64/kernel/built-in.a arch/ia64/mm/built-in.a kernel/built-in.a certs/built-in.a mm/built-in.a fs/built-in.a ipc/built-in.a security/built-in.a crypto/built-in.a block/built-in.a lib/built-in.a arch/ia64/lib/built-in.a lib/lib.a arch/ia64/lib/lib.a drivers/built-in.a sound/built-in.a net/built-in.a virt/built-in.a arch/ia64/pci/built-in.a arch/ia64/hp/common/built-in.a --no-whole-archive --start-group --end-group
ld: lib/zstd/entropy_common.o: linking constant-gp files with non-constant-gp files
ld: failed to merge target specific data of file lib/zstd/entropy_common.o
ld: lib/zstd/fse_decompress.o: linking constant-gp files with non-constant-gp files
ld: failed to merge target specific data of file lib/zstd/fse_decompress.o
ld: lib/zstd/zstd_common.o: linking constant-gp files with non-constant-gp files
ld: failed to merge target specific data of file lib/zstd/zstd_common.o
This is seen on Debian unstable, with gcc 10.2 and binutils 2.35. A
full build log is available at:
https://buildd.debian.org/status/fetch.php?pkg=linux&arch=ia64&ver=5.9~rc4-1~exp1&stamp=1599955166&raw=1
Ben.
--
Ben Hutchings
Humour is the best antidote to reality.
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: vmlinux link failure on ia64 with zstd
2020-09-13 19:51 vmlinux link failure on ia64 with zstd Ben Hutchings
@ 2020-09-14 19:12 ` Nick Terrell
2021-03-23 16:28 ` John Paul Adrian Glaubitz
1 sibling, 0 replies; 10+ messages in thread
From: Nick Terrell @ 2020-09-14 19:12 UTC (permalink / raw)
To: Ben Hutchings; +Cc: linux-ia64, yamada.masahiro, Linux Kbuild mailing list
> On Sep 13, 2020, at 12:51 PM, Ben Hutchings <ben@decadent.org.uk> wrote:
>
> Enabling CONFIG_RD_ZSTD (which is enabled by default) resulted in a
> link failure on ia64:
>
> + ld -r -o vmlinux.o --whole-archive arch/ia64/kernel/head.o init/built-in.a usr/built-in.a arch/ia64/kernel/built-in.a arch/ia64/mm/built-in.a kernel/built-in.a certs/built-in.a mm/built-in.a fs/built-in.a ipc/built-in.a security/built-in.a crypto/built-in.a block/built-in.a lib/built-in.a arch/ia64/lib/built-in.a lib/lib.a arch/ia64/lib/lib.a drivers/built-in.a sound/built-in.a net/built-in.a virt/built-in.a arch/ia64/pci/built-in.a arch/ia64/hp/common/built-in.a --no-whole-archive --start-group --end-group
> ld: lib/zstd/entropy_common.o: linking constant-gp files with non-constant-gp files
> ld: failed to merge target specific data of file lib/zstd/entropy_common.o
> ld: lib/zstd/fse_decompress.o: linking constant-gp files with non-constant-gp files
> ld: failed to merge target specific data of file lib/zstd/fse_decompress.o
> ld: lib/zstd/zstd_common.o: linking constant-gp files with non-constant-gp files
> ld: failed to merge target specific data of file lib/zstd/zstd_common.o
I’ve never seen anything like this error before. I did some searching, and found that it may show up if an object file is empty.
These three files are all included in both the zstd_compress and the zstd_decompress modules. We used to exclude these 3 files from the zstd_decompress module when both modules are built-in. But then commit dc35da16a2e2 [0] removed that, because Kbuild is supposed to handle that case.
If you revert commit dc35da16a2e2 [0] does that fix the issue? I’m attempting to build with IA64, and I’ll let you know if I am able to reproduce the issue and test if this fixes it.
CC: Masahiro Yamada <yamada.masahiro@socionext.com> author of the commit and the linux-kbuild mailing list.
[0] https://github.com/torvalds/linux/commit/dc35da16a2e23db04822f0129cd5b28b7b0e72b4
Best,
Nick
> This is seen on Debian unstable, with gcc 10.2 and binutils 2.35. A
> full build log is available at:
> https://buildd.debian.org/status/fetch.php?pkg=linux&arch=ia64&ver=5.9~rc4-1~exp1&stamp=1599955166&raw=1
>
> Ben.
>
> --
> Ben Hutchings
> Humour is the best antidote to reality.
>
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: vmlinux link failure on ia64 with zstd
@ 2020-09-14 19:12 ` Nick Terrell
0 siblings, 0 replies; 10+ messages in thread
From: Nick Terrell @ 2020-09-14 19:12 UTC (permalink / raw)
To: Ben Hutchings; +Cc: linux-ia64, yamada.masahiro, Linux Kbuild mailing list
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: vmlinux link failure on ia64 with zstd
2020-09-14 19:12 ` Nick Terrell
@ 2020-09-15 6:48 ` Masahiro Yamada
-1 siblings, 0 replies; 10+ messages in thread
From: Masahiro Yamada @ 2020-09-15 6:48 UTC (permalink / raw)
To: Nick Terrell; +Cc: Ben Hutchings, linux-ia64, Linux Kbuild mailing list
On Tue, Sep 15, 2020 at 4:12 AM Nick Terrell <terrelln@fb.com> wrote:
>
>
>
> > On Sep 13, 2020, at 12:51 PM, Ben Hutchings <ben@decadent.org.uk> wrote:
> >
> > Enabling CONFIG_RD_ZSTD (which is enabled by default) resulted in a
> > link failure on ia64:
> >
> > + ld -r -o vmlinux.o --whole-archive arch/ia64/kernel/head.o init/built-in.a usr/built-in.a arch/ia64/kernel/built-in.a arch/ia64/mm/built-in.a kernel/built-in.a certs/built-in.a mm/built-in.a fs/built-in.a ipc/built-in.a security/built-in.a crypto/built-in.a block/built-in.a lib/built-in.a arch/ia64/lib/built-in.a lib/lib.a arch/ia64/lib/lib.a drivers/built-in.a sound/built-in.a net/built-in.a virt/built-in.a arch/ia64/pci/built-in.a arch/ia64/hp/common/built-in.a --no-whole-archive --start-group --end-group
> > ld: lib/zstd/entropy_common.o: linking constant-gp files with non-constant-gp files
> > ld: failed to merge target specific data of file lib/zstd/entropy_common.o
> > ld: lib/zstd/fse_decompress.o: linking constant-gp files with non-constant-gp files
> > ld: failed to merge target specific data of file lib/zstd/fse_decompress.o
> > ld: lib/zstd/zstd_common.o: linking constant-gp files with non-constant-gp files
> > ld: failed to merge target specific data of file lib/zstd/zstd_common.o
>
> I’ve never seen anything like this error before. I did some searching, and found that it may show up if an object file is empty.
>
> These three files are all included in both the zstd_compress and the zstd_decompress modules. We used to exclude these 3 files from the zstd_decompress module when both modules are built-in. But then commit dc35da16a2e2 [0] removed that, because Kbuild is supposed to handle that case.
>
> If you revert commit dc35da16a2e2 [0] does that fix the issue? I’m attempting to build with IA64, and I’ll let you know if I am able to reproduce the issue and test if this fixes it.
>
> CC: Masahiro Yamada <yamada.masahiro@socionext.com> author of the commit and the linux-kbuild mailing list.
>
> [0] https://github.com/torvalds/linux/commit/dc35da16a2e23db04822f0129cd5b28b7b0e72b4
dc35da16a2e2 is more than two years old (i.e. v4.17)
Are we discussing a long-standing issue
or something that arose recently?
> Best,
> Nick
>
> > This is seen on Debian unstable, with gcc 10.2 and binutils 2.35. A
> > full build log is available at:
> > https://buildd.debian.org/status/fetch.php?pkg=linux&arch=ia64&ver=5.9~rc4-1~exp1&stamp=1599955166&raw=1
> >
> > Ben.
> >
> > --
> > Ben Hutchings
> > Humour is the best antidote to reality.
> >
>
--
Best Regards
Masahiro Yamada
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: vmlinux link failure on ia64 with zstd
@ 2020-09-15 6:48 ` Masahiro Yamada
0 siblings, 0 replies; 10+ messages in thread
From: Masahiro Yamada @ 2020-09-15 6:48 UTC (permalink / raw)
To: Nick Terrell; +Cc: Ben Hutchings, linux-ia64, Linux Kbuild mailing list
On Tue, Sep 15, 2020 at 4:12 AM Nick Terrell <terrelln@fb.com> wrote:
>
>
>
> > On Sep 13, 2020, at 12:51 PM, Ben Hutchings <ben@decadent.org.uk> wrote:
> >
> > Enabling CONFIG_RD_ZSTD (which is enabled by default) resulted in a
> > link failure on ia64:
> >
> > + ld -r -o vmlinux.o --whole-archive arch/ia64/kernel/head.o init/built-in.a usr/built-in.a arch/ia64/kernel/built-in.a arch/ia64/mm/built-in.a kernel/built-in.a certs/built-in.a mm/built-in.a fs/built-in.a ipc/built-in.a security/built-in.a crypto/built-in.a block/built-in.a lib/built-in.a arch/ia64/lib/built-in.a lib/lib.a arch/ia64/lib/lib.a drivers/built-in.a sound/built-in.a net/built-in.a virt/built-in.a arch/ia64/pci/built-in.a arch/ia64/hp/common/built-in.a --no-whole-archive --start-group --end-group
> > ld: lib/zstd/entropy_common.o: linking constant-gp files with non-constant-gp files
> > ld: failed to merge target specific data of file lib/zstd/entropy_common.o
> > ld: lib/zstd/fse_decompress.o: linking constant-gp files with non-constant-gp files
> > ld: failed to merge target specific data of file lib/zstd/fse_decompress.o
> > ld: lib/zstd/zstd_common.o: linking constant-gp files with non-constant-gp files
> > ld: failed to merge target specific data of file lib/zstd/zstd_common.o
>
> I’ve never seen anything like this error before. I did some searching, and found that it may show up if an object file is empty.
>
> These three files are all included in both the zstd_compress and the zstd_decompress modules. We used to exclude these 3 files from the zstd_decompress module when both modules are built-in. But then commit dc35da16a2e2 [0] removed that, because Kbuild is supposed to handle that case.
>
> If you revert commit dc35da16a2e2 [0] does that fix the issue? I’m attempting to build with IA64, and I’ll let you know if I am able to reproduce the issue and test if this fixes it.
>
> CC: Masahiro Yamada <yamada.masahiro@socionext.com> author of the commit and the linux-kbuild mailing list.
>
> [0] https://github.com/torvalds/linux/commit/dc35da16a2e23db04822f0129cd5b28b7b0e72b4
dc35da16a2e2 is more than two years old (i.e. v4.17)
Are we discussing a long-standing issue
or something that arose recently?
> Best,
> Nick
>
> > This is seen on Debian unstable, with gcc 10.2 and binutils 2.35. A
> > full build log is available at:
> > https://buildd.debian.org/status/fetch.php?pkg=linux&arch=ia64&ver=5.9~rc4-1~exp1&stamp=1599955166&raw=1
> >
> > Ben.
> >
> > --
> > Ben Hutchings
> > Humour is the best antidote to reality.
> >
>
--
Best Regards
Masahiro Yamada
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: vmlinux link failure on ia64 with zstd
2020-09-15 6:48 ` Masahiro Yamada
@ 2020-09-15 6:52 ` Nick Terrell
-1 siblings, 0 replies; 10+ messages in thread
From: Nick Terrell @ 2020-09-15 6:52 UTC (permalink / raw)
To: Masahiro Yamada; +Cc: Ben Hutchings, linux-ia64, Linux Kbuild mailing list
> On Sep 14, 2020, at 11:48 PM, Masahiro Yamada <masahiroy@kernel.org> wrote:
>
> On Tue, Sep 15, 2020 at 4:12 AM Nick Terrell <terrelln@fb.com> wrote:
>>
>>
>>
>>> On Sep 13, 2020, at 12:51 PM, Ben Hutchings <ben@decadent.org.uk> wrote:
>>>
>>> Enabling CONFIG_RD_ZSTD (which is enabled by default) resulted in a
>>> link failure on ia64:
>>>
>>> + ld -r -o vmlinux.o --whole-archive arch/ia64/kernel/head.o init/built-in.a usr/built-in.a arch/ia64/kernel/built-in.a arch/ia64/mm/built-in.a kernel/built-in.a certs/built-in.a mm/built-in.a fs/built-in.a ipc/built-in.a security/built-in.a crypto/built-in.a block/built-in.a lib/built-in.a arch/ia64/lib/built-in.a lib/lib.a arch/ia64/lib/lib.a drivers/built-in.a sound/built-in.a net/built-in.a virt/built-in.a arch/ia64/pci/built-in.a arch/ia64/hp/common/built-in.a --no-whole-archive --start-group --end-group
>>> ld: lib/zstd/entropy_common.o: linking constant-gp files with non-constant-gp files
>>> ld: failed to merge target specific data of file lib/zstd/entropy_common.o
>>> ld: lib/zstd/fse_decompress.o: linking constant-gp files with non-constant-gp files
>>> ld: failed to merge target specific data of file lib/zstd/fse_decompress.o
>>> ld: lib/zstd/zstd_common.o: linking constant-gp files with non-constant-gp files
>>> ld: failed to merge target specific data of file lib/zstd/zstd_common.o
>>
>> I’ve never seen anything like this error before. I did some searching, and found that it may show up if an object file is empty.
>>
>> These three files are all included in both the zstd_compress and the zstd_decompress modules. We used to exclude these 3 files from the zstd_decompress module when both modules are built-in. But then commit dc35da16a2e2 [0] removed that, because Kbuild is supposed to handle that case.
>>
>> If you revert commit dc35da16a2e2 [0] does that fix the issue? I’m attempting to build with IA64, and I’ll let you know if I am able to reproduce the issue and test if this fixes it.
>>
>> CC: Masahiro Yamada <yamada.masahiro@socionext.com> author of the commit and the linux-kbuild mailing list.
>>
>> [0] https://github.com/torvalds/linux/commit/dc35da16a2e23db04822f0129cd5b28b7b0e72b4
>
>
> dc35da16a2e2 is more than two years old (i.e. v4.17)
>
> Are we discussing a long-standing issue
> or something that arose recently?
It arose recently because I believe that zstd wasn’t enabled on any IA64 systems before recently.
But, I believe that the cause is that some of the object files contain no symbols, and binutils can’t
handle it on this architecture. I’m not 100% positive, because I haven’t been able to reproduce the
issue, since I haven’t yet been able to build with IA64.
-Nick
>> Best,
>> Nick
>>
>>> This is seen on Debian unstable, with gcc 10.2 and binutils 2.35. A
>>> full build log is available at:
>>> https://urldefense.proofpoint.com/v2/url?u=https-3A__buildd.debian.org_status_fetch.php-3Fpkg-3Dlinux-26arch-3Dia64-26ver-3D5.9-7Erc4-2D1-7Eexp1-26stamp-3D1599955166-26raw-3D1&d=DwIFaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=HQM5IQdWOB8WaMoii2dYTw&m=zqqAl5yIf7XQV-QrVXwcu88cjrqLf9QedSMsg216RPo&s=dpKuoQBFAM1Z4q9XD9bSaSpK3o4WSELqyze8nMsxRgI&e=
>>>
>>> Ben.
>>>
>>> --
>>> Ben Hutchings
>>> Humour is the best antidote to reality.
>>>
>>
>
>
> --
> Best Regards
> Masahiro Yamada
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: vmlinux link failure on ia64 with zstd
@ 2020-09-15 6:52 ` Nick Terrell
0 siblings, 0 replies; 10+ messages in thread
From: Nick Terrell @ 2020-09-15 6:52 UTC (permalink / raw)
To: Masahiro Yamada; +Cc: Ben Hutchings, linux-ia64, Linux Kbuild mailing list
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: vmlinux link failure on ia64 with zstd
2020-09-15 6:48 ` Masahiro Yamada
@ 2020-11-30 12:27 ` John Paul Adrian Glaubitz
-1 siblings, 0 replies; 10+ messages in thread
From: John Paul Adrian Glaubitz @ 2020-11-30 12:27 UTC (permalink / raw)
To: Masahiro Yamada, Nick Terrell
Cc: Ben Hutchings, linux-ia64, Linux Kbuild mailing list, Tony Luck
Hi Masahiro!
On 9/15/20 8:48 AM, Masahiro Yamada wrote:
> dc35da16a2e2 is more than two years old (i.e. v4.17)
>
> Are we discussing a long-standing issue
> or something that arose recently?
Kernels up to 5.7.0 built fine on ia64 in Debian [1], but I assume that zstd was
only recently enabled in Debian's standard kernel.
Adrian
> [1] https://buildd.debian.org/status/logs.php?pkg=linux&arch=ia64
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer - glaubitz@debian.org
`. `' Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: vmlinux link failure on ia64 with zstd
@ 2020-11-30 12:27 ` John Paul Adrian Glaubitz
0 siblings, 0 replies; 10+ messages in thread
From: John Paul Adrian Glaubitz @ 2020-11-30 12:27 UTC (permalink / raw)
To: Masahiro Yamada, Nick Terrell
Cc: Ben Hutchings, linux-ia64, Linux Kbuild mailing list, Tony Luck
Hi Masahiro!
On 9/15/20 8:48 AM, Masahiro Yamada wrote:
> dc35da16a2e2 is more than two years old (i.e. v4.17)
>
> Are we discussing a long-standing issue
> or something that arose recently?
Kernels up to 5.7.0 built fine on ia64 in Debian [1], but I assume that zstd was
only recently enabled in Debian's standard kernel.
Adrian
> [1] https://buildd.debian.org/status/logs.php?pkg=linux&arch=ia64
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer - glaubitz@debian.org
`. `' Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: vmlinux link failure on ia64 with zstd
2020-09-13 19:51 vmlinux link failure on ia64 with zstd Ben Hutchings
2020-09-14 19:12 ` Nick Terrell
@ 2021-03-23 16:28 ` John Paul Adrian Glaubitz
1 sibling, 0 replies; 10+ messages in thread
From: John Paul Adrian Glaubitz @ 2021-03-23 16:28 UTC (permalink / raw)
To: linux-ia64
Hi Ben!
On 9/13/20 9:51 PM, Ben Hutchings wrote:
> Enabling CONFIG_RD_ZSTD (which is enabled by default) resulted in a
> link failure on ia64:
>
> + ld -r -o vmlinux.o --whole-archive arch/ia64/kernel/head.o init/built-in.a usr/built-in.a arch/ia64/kernel/built-in.a arch/ia64/mm/built-in.a kernel/built-in.a certs/built-in.a mm/built-in.a fs/built-in.a ipc/built-in.a security/built-in.a crypto/built-in.a block/built-in.a lib/built-in.a arch/ia64/lib/built-in.a lib/lib.a arch/ia64/lib/lib.a drivers/built-in.a sound/built-in.a net/built-in.a virt/built-in.a arch/ia64/pci/built-in.a arch/ia64/hp/common/built-in.a --no-whole-archive --start-group --end-group
> ld: lib/zstd/entropy_common.o: linking constant-gp files with non-constant-gp files
> ld: failed to merge target specific data of file lib/zstd/entropy_common.o
> ld: lib/zstd/fse_decompress.o: linking constant-gp files with non-constant-gp files
> ld: failed to merge target specific data of file lib/zstd/fse_decompress.o
> ld: lib/zstd/zstd_common.o: linking constant-gp files with non-constant-gp files
> ld: failed to merge target specific data of file lib/zstd/zstd_common.o
It was suggested on IRC (#debian-ports) that we need to pass "-mconstant-gp" to GCC at
the right places and it seems this issue existed before in the past [1]. Fix seems
trivial.
Adrian
> [1] https://marc.info/?l=linux-kbuild&m\x133643269731499&w=2
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer - glaubitz@debian.org
`. `' Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2021-03-23 16:28 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-09-13 19:51 vmlinux link failure on ia64 with zstd Ben Hutchings
2020-09-14 19:12 ` Nick Terrell
2020-09-14 19:12 ` Nick Terrell
2020-09-15 6:48 ` Masahiro Yamada
2020-09-15 6:48 ` Masahiro Yamada
2020-09-15 6:52 ` Nick Terrell
2020-09-15 6:52 ` Nick Terrell
2020-11-30 12:27 ` John Paul Adrian Glaubitz
2020-11-30 12:27 ` John Paul Adrian Glaubitz
2021-03-23 16:28 ` John Paul Adrian Glaubitz
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