https://bugzilla.suse.com/show_bug.cgi?id=1218864 https://bugzilla.suse.com/show_bug.cgi?id=1218864#c26 --- Comment #26 from Michael Chang --- Created attachment 872053 --> https://bugzilla.suse.com/attachment.cgi?id=872053&action=edit check-expected-entry.diff It appears to me the error can be avoided if we check expected number of entries in the dir block regardless number of extend equals 1 or not. In other words, always do the check before iterating entries ..

entries = grub_be_to_cpu32 (tail->leaf_count) - grub_be_to_cpu32 (tail->leaf_stale);

if (!entries) continue;

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