Bug 218679

Summary: linux-6.8.3 fails to build: modpost: "srso_alias_untrain_ret" [arch/x86/kvm/kvm-amd.ko] undefined
Product: Platform Specific/Hardware Reporter: Petr Pisar (petr.pisar)
Component: x86-64Assignee: platform_x86_64 (platform_x86_64)
Status: RESOLVED CODE_FIX    
Severity: normal CC: bp
Priority: P3    
Hardware: All   
OS: Linux   
Kernel Version: 6.8.3 Subsystem:
Regression: Yes Bisected commit-id:
Attachments: Kernel configuation file
fix

Description Petr Pisar 2024-04-03 16:15:41 UTC 
Created attachment 306083 [details]
Kernel configuation file

When I try to build linux-6.8.3 on AMD x86_64 for the for same platform with enabled KVM (see an attached .config file), the build fails:

# make
  CALL    scripts/checksyscalls.sh
  DESCEND objtool
  INSTALL libsubcmd_headers
  MODPOST Module.symvers
ERROR: modpost: "srso_alias_untrain_ret" [arch/x86/kvm/kvm-amd.ko] undefined!
make[2]: *** [scripts/Makefile.modpost:145: Module.symvers] Chyba 1
make[1]: *** [/usr/src/linux-6.8.3/Makefile:1873: modpost] Chyba 2
make: *** [Makefile:240: __sub-make] Chyba 2

I have gcc-13.2.1 and binutils-2.41.0.
Linux-6.8.2 builds fine.
Comment 1 Borislav Petkov 2024-04-03 16:53:29 UTC 
Created attachment 306084 [details]
fix

See if this fixes it.
Comment 2 Petr Pisar 2024-04-03 17:38:15 UTC 
Thanks for the quick patch. I confirm it fixes the problem for me. The kernel builds and runs.

Note that the patch does not apply cleanly to 6.8.3.
Comment 3 Borislav Petkov 2024-04-03 17:41:14 UTC 
Thanks for reporting and testing. I'll backport it to stable.
Comment 4 Artem S. Tashkinov 2024-04-06 10:00:57 UTC 
Sadly isn't fixed in 6.8.4.

ERROR: modpost: "srso_alias_untrain_ret" [arch/x86/kvm/kvm-amd.ko] undefined!
make[2]: *** [scripts/Makefile.modpost:145: Module.symvers] Error 1
make[1]: *** [/tmp/linux-6.8/Makefile:1873: modpost] Error 2
make: *** [Makefile:240: __sub-make] Error 2