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| author | Nikos Tsironis <[email protected]> | 2020-03-27 16:01:10 +0200 |
|---|---|---|
| committer | Mike Snitzer <[email protected]> | 2020-03-27 14:42:25 -0400 |
| commit | 9fc06ff56845cc5ccafec52f545fc2e08d22f849 (patch) | |
| tree | a1d17e2eba1e558cbcccf03d83ed817356a45d82 /lib/test_overflow.c | |
| parent | cd481c12269b4d276f1a52eda0ebd419079bfe3a (diff) | |
dm clone: Add missing casts to prevent overflows and data corruption
Add missing casts when converting from regions to sectors.
In case BITS_PER_LONG == 32, the lack of the appropriate casts can lead
to overflows and miscalculation of the device sector.
As a result, we could end up discarding and/or copying the wrong parts
of the device, thus corrupting the device's data.
Fixes: 7431b7835f55 ("dm: add clone target")
Cc: [email protected] # v5.4+
Signed-off-by: Nikos Tsironis <[email protected]>
Signed-off-by: Mike Snitzer <[email protected]>
Diffstat (limited to 'lib/test_overflow.c')
0 files changed, 0 insertions, 0 deletions