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linux/drivers/md/dm.c
Mike Snitzer 0eb56457d2 dm: eliminate potential source of excessive kernel log noise 
commit 0378c625af upstream.

There wasn't ever a real need to log an error in the kernel log for
ioctls issued with insufficient permissions. Simply return an error
and if an admin/user is sufficiently motivated they can enable DM's
dynamic debugging to see an explanation for why the ioctls were
disallowed.

Reported-by: Nir Soffer <nsoffer@redhat.com>
Fixes: e980f62353 ("dm: don't allow ioctls to targets that don't map to whole devices")
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-19 18:27:33 +01:00

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