From 28e7ae95afa7fbdb68b77dcf441ba7f949afc39a Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue, 8 Sep 2026 15:15:29 +0900
Subject: [PATCH] tar-util: do not fail by adding an unknown acl tag

archive_entry_acl_add_entry() will fail when an unknown tag is set.
---
 src/shared/tar-util.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/shared/tar-util.c b/src/shared/tar-util.c
index c1afe5bf27..8d6306a20d 100644
--- a/src/shared/tar-util.c
+++ b/src/shared/tar-util.c
@@ -1347,6 +1347,8 @@ static int archive_write_acl(
                         return log_error_errno(errno, "Failed to get ACL entry tag: %m");
 
                 int tag = libacl_tag_to_libarchive_acl_tag(ntag);
+                if (tag == _ARCHIVE_ENTRY_ACL_UNDEFINED)
+                        continue;
 
                 id_t qualifier = UID_INVALID;
                 if (IN_SET(ntag, ACL_USER, ACL_GROUP)) {