On Tue, Nov 04, 2014 at 11:58:17AM +0100, Maxime COQUELIN wrote: > On some 32 bits architectures, including x86, GENMASK(31, 0) returns 0 > instead of the expected ~0UL. > > This is the same on some 64 bits architectures with GENMASK_ULL(63, 0). > > This is due to an overflow in the shift operand, 1 << 32 for GENMASK, > 1 << 64 for GENMASK_ULL. > > Fixes: 10ef6b0dffe404bcc54e94cb2ca1a5b18445a66b > Cc: <stable@xxxxxxxxxxxxxxx> #v3.13+ > Reported-by: Eric Paire <eric.paire@xxxxxx> > Suggested-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx> > Signed-off-by: Maxime Coquelin <maxime.coquelin@xxxxxx> There doesn't appear to be a clear maintainer for this file, so I'll try and stick in in tip. Thanks! -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html