• John Stultz's avatar
    time: Move ktime_t overflow checking into timespec_valid_strict · cee58483
    John Stultz authored
    Andreas Bombe reported that the added ktime_t overflow checking added to
    timespec_valid in commit 4e8b1452 ("time: Improve sanity checking of
    timekeeping inputs") was causing problems with X.org because it caused
    timeouts larger then KTIME_T to be invalid.
    
    Previously, these large timeouts would be clamped to KTIME_MAX and would
    never expire, which is valid.
    
    This patch splits the ktime_t overflow checking into a new
    timespec_valid_strict function, and converts the timekeeping codes
    internal checking to use this more strict function.
    Reported-and-tested-by: default avatarAndreas Bombe <aeb@debian.org>
    Cc: Zhouping Liu <zliu@redhat.com>
    Cc: Ingo Molnar <mingo@kernel.org>
    Cc: Prarit Bhargava <prarit@redhat.com>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: stable@vger.kernel.org
    Signed-off-by: default avatarJohn Stultz <john.stultz@linaro.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    cee58483
timekeeping.c 37.4 KB