pefile: Fix the failure of calculation for digest
authorLans Zhang <jia.zhang@windriver.com>
Sun, 17 Jul 2016 23:10:47 +0000 (00:10 +0100)
committerJames Morris <james.l.morris@oracle.com>
Mon, 18 Jul 2016 02:19:46 +0000 (12:19 +1000)
Commit e68503bd68 forgot to set digest_len and thus cause the following
error reported by kexec when launching a crash kernel:

kexec_file_load failed: Bad message

Fixes: e68503bd68 (KEYS: Generalise system_verify_data() to provide access to internal content)
Signed-off-by: Lans Zhang <jia.zhang@windriver.com>
Tested-by: Dave Young <dyoung@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
cc: kexec@lists.infradead.org
cc: linux-crypto@vger.kernel.org
Signed-off-by: James Morris <james.l.morris@oracle.com>
crypto/asymmetric_keys/mscode_parser.c

index 6a76d5c70ef6e1ddb742bfc94671a499184c891d..9492e1c22d3891417d3e42baf2e99661041c1135 100644 (file)
@@ -124,5 +124,10 @@ int mscode_note_digest(void *context, size_t hdrlen,
        struct pefile_context *ctx = context;
 
        ctx->digest = kmemdup(value, vlen, GFP_KERNEL);
-       return ctx->digest ? 0 : -ENOMEM;
+       if (!ctx->digest)
+               return -ENOMEM;
+
+       ctx->digest_len = vlen;
+
+       return 0;
 }