dm integrity: set journal entry unused when shrinking device

commit cc09e8a upstream.

Commit f6f72f3 ("dm integrity: don't replay journal data past the
end of the device") skips journal replay if the target sector points
beyond the end of the device. Unfortunatelly, it doesn't set the
journal entry unused, which resulted in this BUG being triggered:
BUG_ON(!journal_entry_is_unused(je))

Fix this by calling journal_entry_set_unused() for this case.

Fixes: f6f72f3 ("dm integrity: don't replay journal data past the end of the device")
Cc: [email protected] # v5.7+
Signed-off-by: Mikulas Patocka <[email protected]>
Tested-by: Milan Broz <[email protected]>
[snitzer: revised header]
Signed-off-by: Mike Snitzer <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Mikulas Patocka

drivers/md/dm-integrity.c

@@ -2354,9 +2354,11 @@ static void do_journal_write(struct dm_integrity_c *ic, unsigned write_start,
 					dm_integrity_io_error(ic, "invalid sector in journal", -EIO);
 					sec &= ~(sector_t)(ic->sectors_per_block - 1);
 				}
+				if (unlikely(sec >= ic->provided_data_sectors)) {
+					journal_entry_set_unused(je);
+					continue;
+				}
 			}
-			if (unlikely(sec >= ic->provided_data_sectors))
-				continue;
 			get_area_and_offset(ic, sec, &area, &offset);
 			restore_last_bytes(ic, access_journal_data(ic, i, j), je);
 			for (k = j + 1; k < ic->journal_section_entries; k++) {