./build-buildroot --build-linux fails with "ERROR: No hash found for linux-4.19.16.tar.xz"

[cirosantilli]

On a clean LKMC d53ffcf:

./build -aA --download-dependencies
./build-buildroot -aA --build-linux

Outcome:

>>> host-openssl  Extracting                                                                                                                                                                                                                                                    
>>> host-openssl  Patching                                                                                                                                                                                                                                                      
>>> host-openssl  Configuring                                                                                                                                                                                                                                                   
>>> host-openssl  Building                                                                                                                                                                                                                                                      
>>> host-openssl  Installing to host directory                                                                                                                                                                                                                                  
>>> linux-headers 4.19.16 Downloading                                                                                                                                                                                                                                           
--2020-03-13 19:29:36--  https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.19.16.tar.xz                                                                                                                                                                                      
Resolving cdn.kernel.org (cdn.kernel.org)... 199.232.57.176, 2a04:4e42:4b::432                                                                                                                                                                                                  
Connecting to cdn.kernel.org (cdn.kernel.org)|199.232.57.176|:443... connected.                                                                                                                                                                                                 
HTTP request sent, awaiting response... 200 OK                                                                                                                                                                                                                                  
Length: 103149336 (98M) [application/x-xz]                                                                                                                                                                                                                                      
Saving to: ‘/home/ciro/bak/git/linux-kernel-module-cheat-2/out/buildroot/build/default/aarch64/build/.linux-4.19.16.tar.xz.9qYbhY/output’             
                                                                                                                                                                                                                                                                                
     0K .......... .......... .......... .......... ..........  0% 1.16M 85s                                                                                                                                                                                                    
    50K .......... .......... .......... .......... ..........  0% 2.59M 61s                                                                                                                                                                                                    
   100K .......... .......... .......... .......... ..........  0% 3.44M 50s                                                                                                                                                                                                    
   150K .......... .......... .......... .......... ..........  0% 5.81M 42s

...

100650K .......... .......... .......... .......... .......... 99% 4.81M 0s
100700K .......... .......... .......... .                    100% 6.42M=22s

2020-03-13 19:29:58 (4.41 MB/s) - ‘/home/ciro/bak/git/linux-kernel-module-cheat-2/out/buildroot/build/default/aarch64/build/.linux-4.19.16.tar.xz.9qYbhY/output’ saved [103149336/103149336]

ERROR: No hash found for linux-4.19.16.tar.xz
make[1]: *** [package/pkg-generic.mk:146: /home/ciro/bak/git/linux-kernel-module-cheat-2/out/buildroot/build/default/aarch64/build/linux-headers-4.19.16/.stamp_downloaded] Error 1
make: *** [Makefile:84: _all] Error 2
Traceback (most recent call last):
  File "./build-buildroot", line 175, in <module>
    Main().cli()
  File "/home/ciro/bak/git/linux-kernel-module-cheat-2/cli_function.py", line 267, in cli
    exit_status = self.cli_noexit(*args, **kwargs)
  File "/home/ciro/bak/git/linux-kernel-module-cheat-2/cli_function.py", line 258, in cli_noexit
    return self._do_main(vars(args))
  File "/home/ciro/bak/git/linux-kernel-module-cheat-2/cli_function.py", line 152, in _do_main
    return self.main(**self._get_args(kwargs))
  File "/home/ciro/bak/git/linux-kernel-module-cheat-2/common.py", line 1403, in main
    ret = self.timed_main()
  File "/home/ciro/bak/git/linux-kernel-module-cheat-2/common.py", line 1857, in timed_main
    return self.build()
  File "./build-buildroot", line 160, in build
    cwd=self.env['buildroot_source_dir'],
  File "/home/ciro/bak/git/linux-kernel-module-cheat-2/shell_helpers.py", line 432, in run_cmd
    raise e
Exception: Command exited with status: 2

Related:

• https://stackoverflow.com/questions/45528519/ubuntu14-04-buildroot-no-hash-found-for-gcc

A raw buildroot build with the kernel does work however:

make qemu_aarch64_virt_defconfig
make BR2_JLEVEL="$(nproc)"

Hell why.

One thing that's a bit funny is that the kernel headers used are linux-headers-5.3.14 (from linux/Config.in:125: default "5.3.14" if BR2_LINUX_KERNEL_LATEST_VERSION) so why is Buildroot trying to build an older kernel? I must have set that somewhere but cannot find where.

TODO really confused now: the new clean build has build/linux-headers-5.3.14 but its config has BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_19=y. The old unclean build has ``build/linux-headers-5.3.14too butBR2_KERNEL_HEADERS_5_3=y`.