NeilBrown
e393365fa2
dm: fix to_sector() for 32bit
...
commit 0bdb50c531 upstream.
A dm-raid array with devices larger than 4GB won't assemble on
a 32 bit host since _check_data_dev_sectors() was added in 4.16.
This is because to_sector() treats its argument as an "unsigned long"
which is 32bits (4GB) on a 32bit host. Using "unsigned long long"
is more correct.
Kernels as early as 4.2 can have other problems due to to_sector()
being used on the size of a device.
Fixes: 0cf4503174 ("dm raid: add support for the MD RAID0 personality")
cc: stable@vger.kernel.org (v4.2+)
Reported-and-tested-by: Guillaume Perréal <gperreal@free.fr >
Signed-off-by: NeilBrown <neil@brown.name >
Signed-off-by: Mike Snitzer <snitzer@redhat.com >
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
2019-03-23 13:19:52 +01:00
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