Demi Marie Obenour 10655c7a48 dm ioctl: structs and parameter strings must not overlap
The NUL terminator for each target parameter string must precede the
following 'struct dm_target_spec'.  Otherwise, dm_split_args() might
corrupt this struct.  Furthermore, the first 'struct dm_target_spec'
must come after the 'struct dm_ioctl', as if it overlaps too much
dm_split_args() could corrupt the 'struct dm_ioctl'.

Signed-off-by: Demi Marie Obenour <demi@invisiblethingslab.com>
Reviewed-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
2023-06-23 10:31:51 -04:00
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