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dm integrity: set journal entry unused when shrinking device

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commit cc09e8a9de upstream.

Commit f6f72f32c2 ("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: f6f72f32c2 ("dm integrity: don't replay journal data past the end of the device")
Cc: stable@vger.kernel.org # v5.7+
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Tested-by: Milan Broz <gmazyland@gmail.com>
[snitzer: revised header]
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mikulas Patocka
2022-03-26 10:24:56 -04:00
committed by Greg Kroah-Hartman
parent 737d5e25e2
commit 12ea1f7369
1 changed files with 4 additions and 2 deletions
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6
drivers/md/dm-integrity.c
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@@ -2459,9 +2459,11 @@ 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++) {