linux/drivers/rtc/lib.c, branch v5.1Mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
https://git.shady.money/linux/atom?h=v5.12019-01-10T21:02:44Zrtc: Fix UBSAN overflow warning2019-01-10T21:02:44ZZhangXiaoxuzhangxiaoxu5@huawei.com2018-12-20T09:36:56Zurn:sha1:074b01a51d058f4216b7ce541e96b778aa6af60d
Users may call 'ioctl' and pass a very big value on 'tm->tm_year'.
It can be overflowed in 'int' after add 1900.
In function 'rtc_month_days' and 'mktime64', also treated it as an
'unsigned' parameter.
UBSAN: Undefined behaviour in drivers/rtc/rtc-lib.c:103:59
signed integer overflow:
2147483647 + 1900 cannot be represented in type 'int'
UBSAN: Undefined behaviour in drivers/rtc/rtc-lib.c:119:30
signed integer overflow:
2147483647 + 1900 cannot be represented in type 'int'
So, covert it to 'unsigned' explicitly.
Signed-off-by: ZhangXiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
rtc: rename core files2018-12-31T10:36:16ZAlexandre Bellonialexandre.belloni@bootlin.com2018-12-31T10:36:16Zurn:sha1:36e14f5fdfdf7cec8887b7ff69cd9bb5051ecf62
Rename core files so there is a clearer separation between the RTC core and
the RTC drivers.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>