The following patches make it possible to shrink or extend the device. If the device was shrunk, we don't want to replay journal data pointing past the end of the device.
Signed-off-by: Mikulas Patocka <[email protected]> --- drivers/md/dm-integrity.c | 4 ++++ 1 file changed, 4 insertions(+) Index: linux-2.6/drivers/md/dm-integrity.c =================================================================== --- linux-2.6.orig/drivers/md/dm-integrity.c 2020-01-29 15:21:08.000000000 +0100 +++ linux-2.6/drivers/md/dm-integrity.c 2020-01-29 15:21:08.000000000 +0100 @@ -2205,6 +2205,8 @@ static void do_journal_write(struct dm_i sec &= ~(sector_t)(ic->sectors_per_block - 1); } } + 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++) { @@ -2214,6 +2216,8 @@ static void do_journal_write(struct dm_i break; BUG_ON(unlikely(journal_entry_is_inprogress(je2)) && !from_replay); sec2 = journal_entry_get_sector(je2); + if (unlikely(sec2 >= ic->provided_data_sectors)) + break; get_area_and_offset(ic, sec2, &area2, &offset2); if (area2 != area || offset2 != offset + ((k - j) << ic->sb->log2_sectors_per_block)) break; -- dm-devel mailing list [email protected] https://www.redhat.com/mailman/listinfo/dm-devel
