kexec_file_load signature verification failure

[Dave Young]

Hi, David

kexec_file_load fails with a Bad Message error with recent kernel:

kexec_file_load failed: Bad message

Debug messages:

[ 3463.794391] PEFILE: checksum @ da
[ 3463.794395] PEFILE: header size = 200
[ 3463.794397] PEFILE: cert = 898 @4a5370 [97 08 00 00 00 02 02 00 30 82
08 8b 06 09 2a 86 48 86 f7 0d 01 07 02 a0 82 08 7c 30 82 08 78 02 01 01
31 0f 30 0d 06 09 60 86 48 01 65 03 04 02 01 05 00 30 5c 06 0a 2b 06 01
04 01 82 37 02 01]
[ 3463.794399] PEFILE: sig wrapper = { 897, 200, 2 }
[ 3463.794404] PKCS7: Got data
[ 3463.794407] X.509: PubKey Algo: 9
[ 3463.794411] X.509: Extension: 53
[ 3463.794412] X.509: Extension: 50
[ 3463.794413] X.509: Extension: 49
[ 3463.794414] X.509: subjkeyid 9d5c9a70fe6578e1ba171ba2ab9f3449d6688559
[ 3463.794415] X.509: Extension: 56
[ 3463.794417] X.509: x509_note_tbs_certificate(,4,04,8,780)!
[ 3463.794418] X.509: Signature type: 9 size 513
[ 3463.794419] X.509: AKID: keyid:
9d5c9a70fe6578e1ba171ba2ab9f3449d6688559
[ 3463.794420] X.509: authkeyid 9d5c9a70fe6578e1ba171ba2ab9f3449d6688559
[ 3463.795236] PKCS7: Got cert 1 for dyoung kernel test key
[ 3463.795238] PKCS7: - fingerprint
00d4a0934d161cab68311f301d06035504030c1664796f756e67206b65726e656c2074657374206b6579
[ 3463.795950] PKCS7: verify dyoung kernel test key: 00d4a0934d161cab68
[ 3463.795951] PKCS7: - issuer dyoung kernel test key
[ 3463.795952] PKCS7: - authkeyid.skid
9d5c9a70fe6578e1ba171ba2ab9f3449d6688559
[ 3463.795952] PKCS7: - self-signed
[ 3463.795954] Look up:
"ex:00d4a0934d161cab68311f301d06035504030c1664796f756e67206b65726e656c2074657374206b6579"
[ 3463.796642] PEFILE: Digest: 0 []
[ 3463.796644] PEFILE: Digest size mismatch (20 != 0)

Bisect results:

Bisecting: 0 revisions left to test after this (roughly 0 steps)
[e68503bd6836ba765dc8e0ee77ea675fedc07e41] KEYS: Generalise
system_verify_data() to provide access to internal content

I can not revert this comment only to test, seems there are a lot of
dependencies.

Could you please help on this issue?

Thanks
Dave