On Tue, Nov 12, 2024 at 01:01:54PM +0100, Agathe Porte wrote: > These two fields are populated during and stored as a "frequently used > value" in ufs_fill_super, but are not used afterwards in the driver. > > Moreover, one of the shifts triggers UBSAN: shift-out-of-bounds when > apbshift is 12 because 12 * 3 = 36 and 1 << 36 does not fit in the 32 > bit integer used to store the value. > > Cc: stable@xxxxxxxxxxxxxxx > Closes: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2087853 As these values are not used, even if the shift goes off in the wild it's not needed to backport this as it's not actually causing any problems. So I'd drop the cc: stable@ please. thanks, greg k-h
