3.8.13.7 -stable review patch. If anyone has any objections, please let me know.
------------------ From: Martin Schwidefsky <[email protected]> commit 3b0040a47ad63f7147e9e7d2febb61a3b564bb90 upstream. The find_next_bit_left function is broken if used with an offset which is not a multiple of 64. The shift to mask the bits of a 64-bit word not to search is in the wrong direction, the result can be either a bit found smaller than the offset or failure to find a set bit. Signed-off-by: Martin Schwidefsky <[email protected]> Signed-off-by: Kamal Mostafa <[email protected]> --- arch/s390/include/asm/bitops.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h index 1542293..787eb3b 100644 --- a/arch/s390/include/asm/bitops.h +++ b/arch/s390/include/asm/bitops.h @@ -698,7 +698,7 @@ static inline int find_next_bit_left(const unsigned long *addr, size -= offset; p = addr + offset / __BITOPS_WORDSIZE; if (bit) { - set = __flo_word(0, *p & (~0UL << bit)); + set = __flo_word(0, *p & (~0UL >> bit)); if (set >= size) return size + offset; if (set < __BITOPS_WORDSIZE) -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
