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| author | Bruce Johnston <bjohnsto@redhat.com> | 2026-03-24 14:06:47 -0400 |
|---|---|---|
| committer | Mikulas Patocka <mpatocka@redhat.com> | 2026-03-26 18:18:25 +0100 |
| commit | beced130a367e0b99fa9424505ee7f07ddea86de (patch) | |
| tree | d62e674b847de7397a4696e04b567d4555c12114 /drivers | |
| parent | 2fb98e4170c4a0d9ebe091ca2421121daa352de0 (diff) | |
| download | linux-beced130a367e0b99fa9424505ee7f07ddea86de.tar.gz linux-beced130a367e0b99fa9424505ee7f07ddea86de.zip | |
dm vdo: add upfront validation for logical size
Add a validation check that the logical size passed via the table line
does not exceed MAXIMUM_VDO_LOGICAL_BLOCKS.
Signed-off-by: Bruce Johnston <bjohnsto@redhat.com>
Reviewed-by: Matthew Sakai <msakai@redhat.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/dm-vdo/dm-vdo-target.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/md/dm-vdo/dm-vdo-target.c b/drivers/md/dm-vdo/dm-vdo-target.c index 1065c88a761c..cee6e4edf768 100644 --- a/drivers/md/dm-vdo/dm-vdo-target.c +++ b/drivers/md/dm-vdo/dm-vdo-target.c @@ -792,6 +792,12 @@ static int parse_device_config(int argc, char **argv, struct dm_target *ti, struct device_config *config = NULL; int result; + if (logical_bytes > (MAXIMUM_VDO_LOGICAL_BLOCKS * VDO_BLOCK_SIZE)) { + handle_parse_error(config, error_ptr, + "Logical size exceeds the maximum"); + return VDO_BAD_CONFIGURATION; + } + if ((logical_bytes % VDO_BLOCK_SIZE) != 0) { handle_parse_error(config, error_ptr, "Logical size must be a multiple of 4096"); |