linux-stable/tools/include/asm-generic/bitops
Matthew Wilcox 3fc2579e6f fls: change parameter to unsigned int
When testing in userspace, UBSAN pointed out that shifting into the sign
bit is undefined behaviour.  It doesn't really make sense to ask for the
highest set bit of a negative value, so just turn the argument type into
an unsigned int.

Some architectures (eg ppc) already had it declared as an unsigned int,
so I don't expect too many problems.

Link: http://lkml.kernel.org/r/20181105221117.31828-1-willy@infradead.org
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-04 13:13:46 -08:00
..
__ffs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
__ffz.h tools lib: Add for_each_clear_bit macro 2016-10-24 11:07:33 -03:00
__fls.h tools/headers: Synchronize kernel ABI headers 2017-11-04 09:27:46 +01:00
arch_hweight.h tools/headers: Synchronize kernel ABI headers 2017-11-04 09:27:46 +01:00
atomic.h xarray: Add XArray marks 2018-10-21 10:45:57 -04:00
const_hweight.h tools/headers: Synchronize kernel ABI headers 2017-11-04 09:27:46 +01:00
find.h lib: optimize cpumask_next_and() 2018-02-06 18:32:44 -08:00
fls.h fls: change parameter to unsigned int 2019-01-04 13:13:46 -08:00
fls64.h tools/headers: Synchronize kernel ABI headers 2017-11-04 09:27:46 +01:00
hweight.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
non-atomic.h xarray: Add XArray marks 2018-10-21 10:45:57 -04:00