pefile: Fix the failure of calculation for digest

Commit e68503b 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: e68503b (KEYS: Generalise system_verify_data() to provide access to internal content) Signed-off-by: Lans Zhang <[email protected]> Tested-by: Dave Young <[email protected]> Signed-off-by: David Howells <[email protected]> Cc: Baoquan He <[email protected]> Cc: Vivek Goyal <[email protected]> cc: [email protected] cc: [email protected] Signed-off-by: James Morris <[email protected]>
cluon · Jul 18, 2016 · d128471 · d128471
1 parent a46e667
commit d128471
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/crypto/asymmetric_keys/mscode_parser.c b/crypto/asymmetric_keys/mscode_parser.c
@@ -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;
 }