kexec build regression in linux-6.6.70 (linux-6.6.y LTS branch)

kexec build regression in linux-6.6.70 (linux-6.6.y LTS branch)

[Lars Wendler]

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Hello folks,

trying to build latest linux-6.6.y release (6.6.70) fails with the
following error:

  LD      .tmp_vmlinux.kallsyms1
ld: vmlinux.o: in function `__crash_kexec':
(.text+0x1bf9c1): undefined reference to `machine_crash_shutdown'
ld: vmlinux.o: in function `do_kexec_load':
kexec.c:(.text+0x1c15bb): undefined reference to
  `arch_kexec_protect_crashkres' ld: kexec.c:(.text+0x1c1611):
  undefined reference to `arch_kexec_unprotect_crashkres' ld:
  vmlinux.o: in function `__do_sys_kexec_file_load':
  kexec_file.c:(.text+0x1c272a): undefined reference to
  `arch_kexec_protect_crashkres' ld: kexec_file.c:(.text+0x1c2772):
  undefined reference to `arch_kexec_unprotect_crashkres' make[2]: ***
  [scripts/Makefile.vmlinux:37: vmlinux] Error 1 make[1]: ***
  [/usr/src/linux-6.6.70/Makefile:1164: vmlinux] Error 2 make: ***
  [Makefile:234: __sub-make] Error 2


I suppose this is related to commit
e5b1574a8ca28c40cf53eda43f6c3b016ed41e27 which is the only commit in
question that changes kexec code between linux-6.6.69 and linux-6.6.70.

Kind regards
Lars Wendler

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Re: kexec build regression in linux-6.6.70 (linux-6.6.y LTS branch)

[Greg Kroah-Hartman]

On Fri, Jan 10, 2025 at 10:33:28AM +0100, Lars Wendler wrote:
> Hello folks,
> 
> trying to build latest linux-6.6.y release (6.6.70) fails with the
> following error:
> 
>   LD      .tmp_vmlinux.kallsyms1
> ld: vmlinux.o: in function `__crash_kexec':
> (.text+0x1bf9c1): undefined reference to `machine_crash_shutdown'
> ld: vmlinux.o: in function `do_kexec_load':
> kexec.c:(.text+0x1c15bb): undefined reference to
>   `arch_kexec_protect_crashkres' ld: kexec.c:(.text+0x1c1611):
>   undefined reference to `arch_kexec_unprotect_crashkres' ld:
>   vmlinux.o: in function `__do_sys_kexec_file_load':
>   kexec_file.c:(.text+0x1c272a): undefined reference to
>   `arch_kexec_protect_crashkres' ld: kexec_file.c:(.text+0x1c2772):
>   undefined reference to `arch_kexec_unprotect_crashkres' make[2]: ***
>   [scripts/Makefile.vmlinux:37: vmlinux] Error 1 make[1]: ***
>   [/usr/src/linux-6.6.70/Makefile:1164: vmlinux] Error 2 make: ***
>   [Makefile:234: __sub-make] Error 2
> 
> 
> I suppose this is related to commit
> e5b1574a8ca28c40cf53eda43f6c3b016ed41e27 which is the only commit in
> question that changes kexec code between linux-6.6.69 and linux-6.6.70.

Yeah, this has been reported a number of times, I'll try to track down a
fix later today, sorry about this...

If you change your .config, it does work :)

thanks,

greg k-h

Re: kexec build regression in linux-6.6.70 (linux-6.6.y LTS branch)

[Greg Kroah-Hartman]

On Fri, Jan 10, 2025 at 10:40:24AM +0100, Greg Kroah-Hartman wrote:
> On Fri, Jan 10, 2025 at 10:33:28AM +0100, Lars Wendler wrote:
> > Hello folks,
> > 
> > trying to build latest linux-6.6.y release (6.6.70) fails with the
> > following error:
> > 
> >   LD      .tmp_vmlinux.kallsyms1
> > ld: vmlinux.o: in function `__crash_kexec':
> > (.text+0x1bf9c1): undefined reference to `machine_crash_shutdown'
> > ld: vmlinux.o: in function `do_kexec_load':
> > kexec.c:(.text+0x1c15bb): undefined reference to
> >   `arch_kexec_protect_crashkres' ld: kexec.c:(.text+0x1c1611):
> >   undefined reference to `arch_kexec_unprotect_crashkres' ld:
> >   vmlinux.o: in function `__do_sys_kexec_file_load':
> >   kexec_file.c:(.text+0x1c272a): undefined reference to
> >   `arch_kexec_protect_crashkres' ld: kexec_file.c:(.text+0x1c2772):
> >   undefined reference to `arch_kexec_unprotect_crashkres' make[2]: ***
> >   [scripts/Makefile.vmlinux:37: vmlinux] Error 1 make[1]: ***
> >   [/usr/src/linux-6.6.70/Makefile:1164: vmlinux] Error 2 make: ***
> >   [Makefile:234: __sub-make] Error 2
> > 
> > 
> > I suppose this is related to commit
> > e5b1574a8ca28c40cf53eda43f6c3b016ed41e27 which is the only commit in
> > question that changes kexec code between linux-6.6.69 and linux-6.6.70.
> 
> Yeah, this has been reported a number of times, I'll try to track down a
> fix later today, sorry about this...
> 
> If you change your .config, it does work :)

Should now be fixed with the 6.6.71 release.

thanks,

greg k-h